1

DMR SEKHAR A PROFILE

January, 2016

2

Brief profile of Dr. DMR Sekhar Dr. DMR Sekhar is a graduate in chemical engineering and a post graduate in mineral process

engineering from Andhra University. He was awarded PhD degree by Andhra University for his thesis

on “separation of sulfide minerals from complex ores”. He published 83 technical papers of which 28

are in peer reviewed journals. He is a recipient of “National Mineral Award” for the year 1997 from

the Government of India, “Mineral Beneficiation Award” for the year 2002 from the Indian Institute

of Mineral Engineers and “Mining Engineering Design Award” for the year 2004 from the Institution

of Engineers (India). United Phosphorous Chemcon Distinguished Speaker Award, December, 2011

conferred by Indian Institute of Chemical Engineers.

Dr. Sekhar served M/s Hindustan Zinc Ltd (1979- 83). M/s Rajasthan State Mineral Development Corporation Ltd (1983-1995) and M/s Rajasthan State Mines and Minerals Ltd (1995-2007) at various positions and was Group General Manager in M/s RSMML before joining M/s Wharton Overseas FZE, Ajman, UAE as Executive Director. He was on deputation with M/s JPMC Plc, Jordan and Director, M/s Wharton Overseas FZE, Ajman, UAE till 16/2/2014. He is collaborating with M/s Xanthate Technologies since then and Director, CEEC International Ltd, Australia since November 2014. Dr. Sekhar designed an unconventional grinding circuit for Phosphate Ore Beneficiation Plant at Jhamarkotra, India that involved a roller press operating in tandem with a wet grinding ball mill which proved to be highly energy efficient that reduced power consumption by 15 kWh per ton of ore treated. Dr. Sekhar along with Prof. NC Aery carried out the pioneering experiments on Phosphate Rich Organic Manure [PROM] which proved to be more efficient than Di Ammonium Phosphate the well known chemical phosphatic fertilizer.

Dr. DMR Sekhar receiving National Mineral Award (24/12/1998) from Sri Naveen

Patnaik, the then Minister of Mines, Govt. of India.

3

Dr. DMR Sekhar receiving United Phosphorous CDS Award from Er. A. Bhasker Reddy, President,

Indian Institute of Chemical engineers during ChemCon – 2011, Bangalore, 27-29, December, 2011.

Dr. Sekhar receiving Mining Engineering Design Award 2004, on 17th December, 2004, from Er. B.J. Vasoya, President, Institution of Engineers (India), during 19th Indian Engineering Congress, Mumbai.

4

Dr. Sekhar receiving Mineral Beneficiation Award 2002 from Prof. SP Mehrotra, President,

Indian Institute of Mineral Engineering, on 3-1-2002, during annual conference, Bangalore.

5

6

CURRICULUM VITAE

07 Educational Qualification:

Examination passed Institution Marks obtained Division

Matriculation Andhra University 67% First Class

P.U.C. Andhra University 60% First Class

B. Tech. (Chemical Engg.) Andhra University 54% Second Class

M.Sc. (Mineral Process Engineering) Andhra University 68% First Class

Ph.D. on "Separation of Sulfide

Minerals from complex Ores" (From

the faculty of Chemical Engineering.

Andhra University

01 Name DMR Sekhar

02 Father’s Name D.T. Moses

03 Date of Birth 01.03.1952

04 Place of Birth Ongole

05 Mailing Address DMR Sekhar

Collaborator, Xanthate

Technologies, Vizag.

Flat 9, Sri Durga

Apartments, China Waltair-

530003, India

06 Contact Mobile number 0091 9573250902

7

08 Training

1) In Plant training in mineral processing at I.R.E. Chavara (Kerala) from

08.05.78 to 10.06.78

2) Field project training in mineral processing at A.M.D. Bangalore from

10.04.78 to 04.05.78

09 Extra

Curricular

Activities

1) Secretary, Student's Union (73-74) A.U. Engineering College, Waltair.

2) Represented Andhra University in Kho-Kho in All India Inter - University

Tournament held at Poona (1974)

10 Awards &

Honours

1) Productivity Award, Udaipur District, for the year 1997. 15th August 1997

2) National Mineral Award for the year 1997, by Government of India, Ministry of

Steel & Mines, 24 Dec 1998.

3)

4)

5)

6)

7)

8)

Significant Achievement Award, Udaipur Chamber of Commerce and

Industries. 18th March 1999.

Scroll of honour conferred by Udaipur local centre of The Institution of

Engineers (India), 15.09.99.

Mineral Beneficiation Award, by the Indian Institute of Mineral Engineers, 3rd

January, 2002,during MPT, Bangalore.

Felicitated by the Institution of Engineers (India), for being an eminent

personality in the field of Mining Industry, during XIV National Convention of

Mining Engineers, on 27.2.2002 at Udaipur.

Mining Engineering Design Award-2004, by Institution of Engineers (India), on

17.12.2004, during Indian Engineering Congress, Mumbai.

United Phosphorus Chemcon Distinguished Speaker Award by the Indian

Institute of Chemical Engineers during Chemcon, 27th -29th ,2011, Bangalore.

8

Duration Designation Employer Nature of job.

01 a) 28.6.1979 to

27.6.1980

Prob. Eng. H.Z.L. Shift Engineer 4000 TPD Lead-Zinc beneficiation plant, Zawar Mines.

b) 28.6.1980 to

15.9.1980

Engineer (OD) H.Z.L. -do-

c) 15.9.1980 to

5.8.1983

Development

Engineer-1

H.Z.L. Feasibility and Process Development Studies on Copper, Lead and Zinc Ores (bench scale & pilot plant at Central R&D Lab.

d) 7.2.1983 to

14.4.1983

Development

Engineer-1

H.Z.L. Shift In charge 600 TPD Rock Phosphate Beneficiation Plant, Matoon Mines.

e) 5.8.1983 to

2.12.1983

Engineer (OD) H.Z.L. Shift In charge 500 TPD Lead-Copper Beneficiation Plant, Sargipalli Mines.

02 a) 26.12.1983 to

18.12.1984

Process Eng. R.S.M.D.C.

LIMITED

In charge Fluorspar Beneficiation Plant, Rajasthan Fluorspar Project, Dungarpur.

b) 18.12.1984 to

15.10.1986

Process Eng. R.S.M.D.C.

LIMITED

In charge, Rajasthan Fluorspar Project, Dungarpur.

Agent of Fluorspar Mines, Dungarpur from 12.7.85 to 15.10.86.

03 a) 15.10.1986 Process Eng. R.S.M.D.C.

LIMITED

In charge 18 TPD Pilot Plant for Graphite Beneficiation, Banswara.

Preparation of Feasibility Reports for Graphite and Fluorspar Plants for commercial operation.

R&D Studies on Copper-Lead and Zinc ore of Deri Mines.

R&D Studies on Bentonite and other industrial minerals.

b) 15.11.1990 Process Eng. R.S.M.D.C.

LIMITED

In charge of Rajasthan Fluorspar Project, Dungarpur.

In charge of Mahi Graphite Project, Banswara.

Agent of Limestone Graphite and Rock Phosphate Mines w.e.f. 4.1.91.

PROFESSIONAL EXPERIENCE

9

04 17.08.1993 Senior Process

Engineer.

R.S.M.D.C.

LIMITED

-do-

Job responsibilities include Production and Marketing of Fluorspar, Limestone, Graphite and Rock Phosphate.

05 05.03.1995 Chief Manager

(Ben.)

RSMML,

Jhamarkotra

Operation and Processing of Rock Phosphate ore at 1500 TPD Plant.

06 17.03.1999 General

Manager

RSMML,

Jhamarkotra

In charge 1500 TPD Rock Phosphate Concentrator.

In charge Phosphate Research & Development Centre.

07 a) 21.04.2001 General

Manager

RSMML,

Bikaner

In charge Lime Stone Sizing Plant, Jaisalmer.

In charge Gypsum Project, Bikaner.

b) 26.3.2002 Group General

Manager

RSMML,

Bikaner

In charge of Production of SMS Grade Limestone, Jaisalmer; and Gypsum Production from Bikaner Group of Mines.

In charge Phosphate Research and Development Center (in house R & D of RSMML, recognized by DSIR, Govt. of India).

c) 19.04.2007 Group General

Manager

RSMML,

Bikaner

In charge of Gypsum Operations.

Chief Coordinator R&D, RSMML.

08 21.04.2007-

16/2/2014

Executive

Director/Direc

tor

M/s

Wharton

Overseas

FZE, Ajman

On Deputation to Jordan Phosphate Mines Co. Ltd to provide management/technical services.

9 Feb, 2014 Collaborator

Xanthate Technologies, Vizag

10 Nov., 2015 Director CEEC International Ltd., Australia.

10

LIST OF TECHNICAL PAPERS PUBLISHED / PRESENTED

SN Title of the Paper Status / Details of Publication Authors.

01 The Role of pH in

Flotation.

Presented "National Symposium on

Mineral Beneficiation", 28-29 April, 1983

at Khetri Nagar, Organized by the

Indian Institute of Metals.

D.M.R. Sekhar & Y.

K. Chauhan

02 Revegetation of Tailing

dams.

Presented "National Conference on Lead

Zinc & Cadmium at work place

Environment & Health Care", organized

by Lead, Zinc Information Centre, Delhi.

D.M.R. Sekhar, N.C.

Aery &.D. Tiagi.

03 Primary Vegetative

Growth on an Old Tailing

Dam, Zawar Mines.

"Minerals and Environment", London,

Vol. 5, Page 128, 1983.

D.M.R. Sekhar &

M.R. Jakhu.

04 Some Studies on Lead-

Copper Separation.

"Indian Chemical Engineer", Vol XXVII,

No.r, 1985.

D.M.R. Sekhar,

A.J.Rao, G.G.

Tarniker & M.R.

Chulet.

05 Processing of Low Grade

Silica based Rock

phosphate Ore.

Fertilizer News, Vol.31, No. 6, 1986. D.M.R. Sekhar, V.S.

Rangarajan, S.V.

Ramanamurthy &

V.K. Jain.

06 Preactivation of Cyanide

Depressed Sphalerite with

Formaldehyde.

Transactions of The Indian Institute of

Metals, Vol.30, No.3, 1986.

D.M.R. Sekhar, G.

Siva Reddy & S.C.S.

Rajan.

07 Process options for a Lead

Zinc ore having

interfering Gangue

Minerals.

Transactions of the Indian Institute of

Metals Vol.40, No.2, 1987.

D.M.R. Sekhar, M.R.

Kunda & B.L.

Agrawal.

08 Studies on Lead-Copper

Separation: Deri Ore.

Indian Chemical Eng. Vol. XXX No.3,

1988.

D.M.R. Sekhar.

11

09 A Note on Graphite Ore

Processing.

Transactions of MGMI (India) Vol.86,

No.1, April, 1989.

D.M.R. Sekhar, M.C.

Sharma & H.K.

Gupta.

10 On the Relative Abilities

of some Metals ions for

activation of Sphalerite.

Transactions of The Indian Institute of

Metals, Vol 41, No.4, 1988.

D.M.R. Sekhar &

Rama Shanker.

11 Gangue Depression

during Galena Flotation.

"The Institution of Engineers"(India)

Journal – MM, Vol.71, March, 1991.

D.M.R. Sekhar,

M.R.Kunda, Y.K.

Chauhan & B.N.

Chatterjee.

12 Surface Modification in

Froth Flotation Process.

In the pre-prints of the workshop on

Development in Flotation and Mineral

Industry, RR Labs Bhuvaneswar, 6-7

April 1989.

D.M.R. Sekhar, Rama

Shanker & C.

Chiranjeevi.

13 Selective Separation with

Formaldehyde of

Sphalerite from Deri Ore,

Rajasthan, India

Transactions of The Institution of Mining

& Metallurgy, Section 'C', May-Aug.1990

- London.

D.M.R. Sekhar, C.

Chiranjeevi.

14 Products of Activation

and the Floatability of

Sphalerite An Alternate

View.

"Mineral Processing & Extractive

Metallurgy Review" Vol.7, 1990, Gordon

and Breach Science Publishers Inc., Inc.,

Great Britain.

D.M.R. Sekhar and

Rama Shanker.

15 Selective Destruction of

Dolomitic Limestone

Gangue. Matrix for up

gradation of stromatolitic

phosphorite.

National Symposium on Mineral

Processing and Beneficiation. Deptt. of

Chemistry, SVUPG Centre,

CUDDAPAH -AP, 24 to 26 Jan. 1991.

P.K. Bhargava, Kireet

Achrya & D.M.R.

Sekhar.

16 A Note on The Bentonite

Clay and its use in Oil-

well Drilling.

Symposium on use of clay in Agriculture

Engineering Industries, Clay Mineral

Society of India, CAZRI, Jodhpur, 26-28

Sept.1991.

D.M.R. Sekhar and

R.K. Mundra.

17 Effect of Formaldehyde

and Nickel Sulphate

Solutions on the

Activation of Cyanide

Depressed Sphalerite.

Minerals Engineering Vol.4, Pergamon

Press 1991, Great Britain.

G. Siva Reddy.

C. Konda Reddy, K.

Ravindranath,

D.M.R. Sekhar and

M.R. Chulet.

12

18 Insitu Inlaying - A New

Technique for

Dimensional Stones.

Indian Stone, Vol.7, No.4, Nov.1994, All

India Granite & Stone Association,

Bangalore.

D.M.R. Sekhar.

19 Soap Flotation of

Dolomite

National Seminar on Indian Mineral

Processing Advances , organized by

IIME , at Puri - 18,19 April-96

K. Srinivas

D.M.R. Sekhar

Y.K. Chauhan

20 Soap Flotation Plant

Practice in India.

Trans.Indian. Inst. Of Metals, Vol. 51,

No. 4, August 1998

D.M.R. Sekhar

Y.K. Chauhan.

21 Pre-Activation of Cyanide

Depressed Sphalerite

Technical Bulletin, I.I.M, Udaipur, Jan -

Mar., 1997.

D.M.R. Sekhar, G.

Siva reddy.

22 Structure of Water

Around Activated

Sphalerite

Technical Bulletin, IIM, Udaipur

July-Sept, Vol. 15 No2, 1997

DMR Sekhar,

C. Chiranjeevi

Ramashanker

23 SPC Techniques as

Applied to Flotation

Process

Indian Chem. Engr. Section B, Vol. 42,

No.4, Oct-Dec (2000)

DMR Sekhar , R.K.

Meena

D.M. Shrinivasan

Dheeraj Kapoor

24 SPC Techniques for

Analyzing Flotation Plant

Data

Indian Chem. Engr. Section A, Vol. 43,

No.1, Jan-March (2001).

DMR Sekhar

DM Srinivasan

Abdul Manan

MK Katewa

25 Processing Dimensional

Stones

Presented in the seminar organized by

Indian Institute of Mineral Engineers,

Bhubaneswar 1995, revised version in

Saket Industrial Digest, Oct 1999.

DMR Sekhar

Rama Shanker

26 Direct Application of

High Grade Rock

Phosphate As Fertilizer -

A prelim. Report.

Presented in the National Seminar on

"Food Security organized by RCA

Alumni Association, Udaipur 29-30 Sept

2000

DMR Sekhar

NC Aery

27 Flotation Kinetics : An Process & Plant Engineering, Vol. XIX, DMR Sekhar

13

Over view No.5; Annual 2001. Rama Shankar

28 Scale Up and Design of

Flotation Circuits

Process & Plant Engineering, Vol. XIX,

No.3; October-December, 2001.

DMR Sekhar

29 Phosphate Ore Processing

Plant, Jhamarkotra

In the souvenir of seminar on "Recent

techniques in mineral processing waste

and environment management" 1st &

2nd Feb 2000, RRL, Bhubaneswar

DMR Sekhar, et al

30 Fused Calcium

Magnesium Phosphate

from Low Grade

Phosphate Ore of

Jhamarkotra

In the souvenir of national seminar on

"Mineral Processing Technology 2000",

4&5 April 2000, Indian Bureau of mines,

Nagpur

DMR Sekhar

AD Dwivedi

31

Phosphate Rock With

FYM As P. Fertilizer – In

Neutral And Weakly

Alkaline Soils

Current Science, Vol. 80, No. 9, 10 May

2001, Bangalore

DMR Sekhar

NC Aery

32 PROM - The Product

And The Technology

Process & Plant Engineering, October-

December, 2001.

DMR Sekhar

33 Phosphate Rich Organic

Manure From Wastes of

Sugar And Fruit Juice

Industries

Indian Food Packer, Vol. 54, No. 6, Nov-

Dec 2000, A Journal of All India Food

Packers Association.

DMR Sekhar

34 Phosphatic Fertilisers : An

Alternate Approach

Indian Chemical Engr., Section B, Vol.

44, No.3,

July-September 2002

DMR Sekhar, NC

Aery, DK Gupta

35 Evaluation of Reagents in

Flotation of Graphite from

Rampura Agucha Ore

Trans. Indian Ins. Met. Vol. 54, Nos. 1-2,

February-April 2001,

Sunita Parashar et al

36 Studies on the Use of

high-grade Rock

Phosphate As a Direct ‘P’

Fertilizer in Neutral And

Weakly Alkaline Soils

PROM REVIEW-2001, Organized by

Rajasthan State Mines & Minerals Ltd,

Udaipur; Page No. 15-25

N.C. Aery et al

37 Direct Application Of

Rock Phosphate As P.

PROM REVIEW-2001, Organized by

Rajasthan State Mines & Minerals Ltd,

D.M.R. Sekhar et al

14

Fertilizer In Alkaline

Soils: Problems and

Prospects

Udaipur; Page No. 94-97

38 Studies On The

Agronomic Effectiveness

Of PROM In Weakly

Alkaline Soils

PROM REVIEW –2002, Organized by

RSMM Ltd., Udaipur and MPUAT,

Udaipur; Page No. 27-34

N.C. Aery et al

39 Industrial Production of

Phosphate Rich Organic

Manure

PROM REVIEW –2002, Organized by

RSMM Ltd., Udaipur and MPUAT,

Udaipur; Page No. 104-111

D.M.R. Sekhar et al

40 On Determination of

Work Index Using

Laboratory Ball Mill

Proceedings of the International Seminar

on Mineral Processing Technology,

MPT-2002, 3-5 January 2002; Vol.1(2002)

227-230; Eds. Subramanian, K.A.

Natarajan, B.S. Rao and T.R.R. Rao

Rama Shanker et al

41 Beneficiation of Low-

Grade Rock Phosphate of

Jhamarkotra, Rajasthan,

India

Proceedings of the International Seminar

on Mineral Processing Technology,

MPT-2002, 3-5 January 2002; Vol.1(2002)

326-331; Eds. Subramanian, K.A.

Natarajan, B.S. Rao and T.R.R. Rao

Rama Shanker et al

42 Further Studies on

Flotation of Low-Grade

Rock Phosphate Ore of

Jhamarkotra With Various

Chemical Reagents

International Seminar on Mineral

Processing Technology, MPT-2003

Proceedings, February 6-8,2003; 97-101;

Eds. K.S. Raju, S.K. Ghosh, A.

Majumdar, A.K. Nandi, A.T. Sutone and

A.S. Bhoge.

Kuldeep Jain et al

43 Process Performance

Improvement of Rock

Phosphate Beneficiation

Plant, Jhamarkotra,

Rajasthan, India

International Seminar on Mineral

Processing Technology, MPT-2003

Proceedings, February 6-8,2003; 102-109;

Eds. K.S. Raju, S.K. Ghosh, A.

Majumdar, A.K. Nandi, A.T. Sutone and

A.S. Bhoge

K. Srinivas et al

44 Strategies for Utilization

of Dolomite Tailing at

RSMML Rock Phosphate

Beneficiation Plant

International Seminar on Mineral

Processing Technology, MPT-2003

Proceedings, February 6-8,2003; 392-397;

Eds. K.S. Raju, S.K. Ghosh, A.

Majumdar, A.K. Nandi, A.T. Sutone and

A.D. Dwivedi et al

15

A.S. Bhoge

45 Effect of Barium ions and

pH on the flotation –

Beneficiation of

phosphate from

Jhamarkotra dolomitic

rock phosphate ores

In proceedings of International

conference on Quantitative Approaches

in Mineral Processing (QAMP-2003) at

Bhubaneswar. Allied Publishers, New

Delhi, July 3-4, 2003

Indresh Rathore,

Kuldeep Jain, Rama

Shanker, Sekhar,

D.M.R and Ranawat,

P.S.

46 Development of Prom

Technology

Regional Conference on Organic

Farming & Sustainable Agriculture,

organized by Department of Agriculture,

Rajasthan and Society for Organic

Agriculture Movement; 24-25 March

2003, Jaipur; Paged 56-61

D.M.R. Sekhar and

M.K. Katewa

47 Production of Phosphate

Rich Organic Manure and

Power Via

Biomethanation Route

Proceedings of the National Seminar on

Standards and Technology For

Rural/Urban Compost; Indian Institute

of Soil Science, Bhopal; 17th January

2004; Pages 40-49

D.M.R. Sekhar

48 Internal morphology of

SMS grade limestone

samples

Trans. Inst. Min Metall. C Vol.115, No.3 ,

127-131 (2006)

P. Sen, Joyee Ghosh,

G. Prabhulingaiah,

D M R Sekhar

49 Direct Use of Rock

Phosphate along with

Lignite on Cowpea

PROM Review-2004, organized by

RSMM Ltd. and MPUAT, Udaipur,

28.12.2004; Page No. 26-30

N.C. Aery, D.K. Rana

and DMR Sekhar

50 Phosphatic Manures National Symposium on “Management

of Organic Wastes for Crop Production”,

C C S Haryana Agricultural University,

Hissar, Jan. 19-20, 2005.

D.M.R. Sekhar and G.

Prabhulingaiah

51 Standardization of PROM Presented during National Seminar on

‘Role of PROM and organic sources of

plant nutrients in sustainable

agriculture’ on 27.12.2005 at Udaipur,

organized by Deptt. of Agronomy,

MPUAT

DMR Sekhar

52 PROM and Solubility of PROM Review-2005, Udaipur D.M.R. Sekhar, G.

Prabhulingaiah, D.K.

16

Phosphate Rocks (28.12.2005) Gupta and M.K.

Katewa

53 Test for SMS Grade

Limestone

Trans. Indian. Inst. Met., Vol.59, No.1,

February 2006.

G. Prabhulingaih,

Joyee Joseph, P. Sen,

DMR Sekhar

54 Reengineering the

Jhamarkotra phosphate

concentrator

In the proceedings (3rd Volume) of-

International Mineral Processing

Congress, Turkey-3-8 September, 2006.

D.M.R. Sekhar and

C.L. Jain

55 Gypsum Sizing Plant at

Rawla

In the Volume of Indian Institute of

Minerals

D.M.R. Sekhar and

G. Prabhulingaiah

56 Developments in the

Phosphate Concentrator,

Jhamarkotra : 1995-2005

In the Volume of Indian Institute of

Minerals

D.M.R. Sekhar and

C.L. Jain

57 Resistance of Limestone

to Size reduction

Indian Chemical Engineer, Vol.49, No.2,

April-June, 2007.

G. Prabhulingaiah,

S.R. Jakhar, M.S.

Shekawat, P.S.

Ranawat and D.M.R.

Sekhar

58 Integration of the Laws of

Thermodynamics, the

properties of DNA

molecules, the primary

instincts and the

mechanism of natural

selection

22nd Indian engineering congress, 14-16

December, Udaipur, 2007

D.M.R. Sekhar

59 Phosphate Mineral as

Fertilizer in Saline soils

In the proceedings of International

Mineral Processing Congress, Beijing

(China),24-28 September,2008

D.M.R. Sekhar,

Yasser Dassin, Lutfi

Momani and Abu

Hamatteh

60 Urea as promoter in the

soap flotation of

phosphate ores

Trans.IIM, Vol.62, Issue 6, December,

2009, pp555-557

D.M.R. Sekhar, K.

Srinivas, G.

Prabhulingaiah and

Yasser Dassin

17

61 Utilization of Eshidiya

Phosphate Beneficiation

plant rejects

Presented in MPT-2009, Bhubaneswar,

India

K. Srinivas, Yasser

Dassin, G.

Prabhulingaiah and

D.M.R. Sekhar

62 Promoters for soap

flotation of Phosphate

minerals

In the proceedings of IMPC-2010,

Brisbane, Australia

D.M.R. Sekhar, K.

Srinivas, G.

Prabhulingaiah,

Yasser Dassin and

Abdullah Alftinah

63 Comparative study of

Jhamarkotra soap

emulsion and tall oil soap

emulsion as flotation

collectors

Indian Chemical Engineer, Vol. 52 No. 3

July – September, 2010.

K. Srinivas and

D.M.R. Sekhar

64 Soap flotation of salt type

minerals

Paper presented during ChemCon of

Indian chemical engineers, 2009 at

Andhra University, Visakhapatnam

K. Kanna Babu,

Ch.V.R. Murthy, K.

Srinivas and D.M.R.

Sekhar

65 Peer review and science CURRENT SCIENCE, VOL. 98, NO.9, 10

MAY 2010

D.M.R. Sekhar

66 Open Review of Science

Publications

Accountability in Research, 17: 1-7, 2010 D.M.R. Sekhar and

N.C. Aery

67 Chromium uptake by

Fenugreek

Presented in the seminar NaRMA – 2,

2010, organized by PROM Society at

Udaipur.

http://precedings.nature.com/documen

ts/6762/version/1

DS Xanthate, ChVR

Murthy, SCS Rajan

and DMR Sekhar

68 Studies on the

Accumulation of

Chromium in Fenugreek

presented during the Seminar

NaRMA-3 organized by PROM

Society, 19-20, December, 2011,

Jodhpur.

http://precedings.nature.com/document

s/6763/version/1

Xanthate D S, Murthy

Ch V R, Rajan S C S &

Sekhar D M R

69 Hydro tropes as

promoters in soap

presented during The 6th Jordanian

International Mining Conference, 1-3,

November, 2011, Amman, Jordan.

Abubakar Khadri,

Vijay Kumar P, Yasser

Dassin,

18

flotation http://precedings.nature.com/document

s/6571/version/1

Prabhulingaiah

Gowda&

Sekhar DMR

70 Gene, Brain and

Behaviour

DNA Decipher Journal, Vol 1, No 3(2011),

http://dnadecipher.com/index.php/ddj/

article/view/20

Sekhar, DMR

71 Genome and Plausible

Genopsych

Journal of Consciousness

Exploration & Research, Vol 2, No

10(2011),

http://jcer.com/index.php/jcj/art

icle/view/193

Sekhar, DMR

72 PROM Khad an efficient

source of P to replace the

costly chemical

Phosphatic Fertilizer

Presented during the seminar NaRMA –

3 organised by PROM Society during 19-

20, December 2011 at Jodhpur, India.

http://precedings.nature.com/document

s/6848/version/1

Sekhar, DMR.,

Katewa, MK. and

Shaktawat, MS

73 genomic consciousness Transcience Transactions, Vol. 1, 2010.,

ISBN: 978-81-86-882-35-9

Sekhar, DMR

74 Tri Sodium Citrate as

Promoter in the Soap

Flotation of Phosphate

minerals.

IMPC 2012, New Delhi P Vijay Kumar,

Abubakar Khadri, G

Prabhulingaiah, and

D M R Sekhar

75 Direct Application of

Phosphate Rock in

Alkaline Soils: New

Technologies

NaRMA IV, Organised by PROM Society,

Bikaner, Dec. 2012.

MK Katewa, DMR

Sekhar and MS

Shaktawat

76 Application of Phosphate

Rock as P Fertilizer in

Alkaline Soils: Review of

New Technologies

BMPC 2013, Bulgaria Sekhar, DMR and

Kumawat RC

19

77 Optimization of Tri

Sodium Citrate doses as

Promoter in Soap

Flotation

BMPC 2013, Bulgaria P. Vijay Kumar,

Yasser Dassin, G.

Prabhulingaiah, DMR

Sekhar

78 Discarded Phosphatic Slimes as Fertilizer in Alkaline Soils

Journal of the Polish Mineral Engineering

Society, July – December, 2014

D.M.R. Sekhar , G. Prabhulingaiah , Yasser Dassin, Mahesh Ganesa

Pillai, Sreedevi

Upadhyayula

79 Phosphate Recovery from

Slime Sized Ore

Proceedings of XIII International Seminar

on Mineral Processing Technology- 2013,

Bhuvaneshwar.

DMR Sekhar, Et Al

80 Future of Phosphatic

Fertilizers

International Journal of Applied Life

Sciences and Engineering, Vol. 1(1) 0-

0,2013

DMR Sekhar

81 Evolution of Species International Journal of Applied Life

Sciences and Engineering, Vol. 1(1) 0-

0,2013

DMR Sekhar

82 Genetic Studies Show the

Native Indians

South India journal of Social Sciences,

ISSN 0972-8945,Vol. XII No 2, Dec 2014

DMR Sekhar

83 Life and Consciousness Journal of Indian Psychology, ISSN 0973

-5431, Vol. 28, No 1&2 Jan & July 2014.

DMR Sekhar

84 The Mind Journal of Indian Psychology, ISSN 0973

-5431, Vol. 29, No 1&2 Jan & July 2015.

DMR Sekhar

85 Behaviour of Living

Systems

Journal of Indian Psychology, ISSN 0973

-5431, Vol. 29, No 1&2 Jan & July 2015.

DMR Sekhar and AK

Purohit

20

LIST OF POPULAR ARTICLES ON TECHNOLOGY / MANAGEMENT

SN Title of the article Magazine/ Journal Authors

01 Technology Management

Today and Tomorrow

Annual Bulletin, The Institution of

Engineers (India) Udaipur Center. 15th

September 1998.

DMR Sekhar

02 SWOT Analysis And Beyond Saket Industrial Digest June 2000 DMR Sekhar

03 Of Change and Transformation

in Business

Annual Bulletin, The Institution of

Engineers (India) Udaipur Chapter, 15th

Sept 1999

DMR Sekhar

04 Super phosphate from

Jhamarkotra concentrate

Khanij Sanskar , Jan -March 1997 DMR Sekhar

05 Some value added products

from Rock Phosphate

Khanij Sanskar , April 2000 DMR Sekhar

RK Meena

Navin Dalal

06 Managing the Nation – Plan in a

Nutshell

Saket Industrial Digest, Sep 2000 DMR Sekhar

07 Self-Employed Co-operative

Society - The Plan of a Model

Saket Industrial Digest, July 2002 DMR Sekhar

08 Industry & Social Development Saket Industrial Digest, August 2004 DMR Sekhar

09 Some Philosophical Aspects of

the Genopsych

Saket Industrial Digest, May 2005 DMR Sekhar

10 The Model of Genopsych Saket Industrial Digest , July 2005 DMR Sekhar

11 Native Intelligence Communicated for publication to Saket

Industrial Digest

DMR Sekhar

12 Geno - Psych: A Model for

Understanding Mind-Body

Relation,

11th Souvenir (vol. 11) on Engineers’ day

September 15, 2006, The Institution of

Engineers (India), Udaipur local chapter

DMR Sekhar

21

Technical Books Published

Title Subject/Publisher Authors

1 PROM Manual: A Practical

Guide to PROM Making

Agriculture, Himanshu

Publications, Udaipur, 2005,

ISBN: 8179060926

Sekhar, DMR and Aery,

NC

2 Genopsych (monograph) Biology, Transcience

Transactions, Vol 2, 2011,

ISBN: 978-81-7233-724-7

Sekhar, DMR

3 Consciousness, Entropy

and Evolution

Biology, Transcience

Transactions, Vol. III, 2012,

ISBN: 978-81-7233-794-0

Sekhar, DMR

General Books Published

Serial

Number

Title Subject/Publisher Authors

1 Temples of Sand Poetry (English), Gyan

Books, New Delhi: ISBN:

978-81-7835-914-4

Sekhar, DMR

2 Saphari Poetry (Telugu), RISE,

Ongole, ISBN:978-81-

920745-1-1

Sekhar, DMR

13 Calotropis, a Pioneer in Bio-

Remediation

11th Souvenir (vol. 11) on Engineers’ day

September 15, 2006, The Institution of

Engineers (India), Udaipur local chapter

DMR Sekhar

22

ON - JOB PROFESSIONAL COURSES

Membership in Professional Bodies

SN Membership Institution

01 Life Fellow The Institution of Engineers (India) , Calcutta F106455 - 6

02 Life Member The Mining, Geological and Metallurgical

Institute of India, Calcutta.

8138-LM, 1999-2000

03 Life Member Indian Institute of Mineral Engineers,

Jamshedpur

LM -324

04 Life Member Indian Institute of Metals, Calcutta. UO1- LMO2 – 22359

SN Title of the course Period Faculty Course organized

by

01 Advanced Induction

Course in Mineral

Dressing.

15th - 20th Nov.

1979

i) Prof. P.Sen ii) Prof. N.K.Purohit iii) Prof. D.D.Mishra

Dept. of Chemical

Engineering,

I.I.T.Kharagpur

02 Work - Shop on Hydro

cyclones

25th - 27th Dec.

1980

i) Prof. T.C.Rao ii) Sri M.Vanaugamudi

Indian School of

Mines, Dhanbad

03 Statistical Process Control 5th - 6th Feb.

1996

i) Sri Srivastava ii) Sri Maheswari

Indian Institute of

Quality

Management,

Jaipur.

04 Computer Awareness

MS - Windows 95 &

MS Office for Windows 95

4th - 18th Mar.

1997

i) Mr. Kapil Jain ii) Mr. Manoj Sharma

CMC Limited,

New Delhi.

23

05 Life Member Indian Society of Soil Science LM/S/152, 2002

06 Life Member PROM Society LM-

07 Life Member Indian Institute of Public Administration L-10306

08 Life Fellow Indian Academy of Social Sciences, Allahabad ISSA/M/271/2009

MAJOR SCIENTIFIC ACHIEVEMENTS - Dr. DMR Sekhar

SN Activity Period

01 Identification of plant species and development of a scheme to revegatate lead

- zinc tailings dam of Zawar Mines.

1979 – 81

(ref. 2 & 3)

02 Development of process flow sheet for Rampura Agucha Ore - as an active

member of CRDL team of M/s HZL.

1981 – 83

(ref. 7 & 11)

03 Introduction and successful testing of a new class of reagents – Preactivators

(eg. formaldehyde) in the sphalerite flotation.

1983–97 (ref.

6,13,17, 21)

04 All time high production and sales of fluorspar (beneficiated and directly

mined) at Rajasthan Fluorspar Project/ (RSMDC Ltd.), Dungarpur.

1985 - 86

05 All time high production and sales of graphite (beneficiated) and lime stone

(directly mined) at Mahi Graphite Project (RSMDC Ltd.), Banswada.

1991 – 95

06 Development of a comprehensive theory that explains structural changes in the

liquid water at sphalerite - water interface, while changing sphalerite surface

from hydrophilic to hydrophobic.

1985 – 97

(ref. 10,14 &

22)

07 Formulation of soap collectors for use in acidic flotation circuits theory and

practice.

1995 – 97

(ref. 20)

08 Introduced the use of alfa olefin sulfonate @ 130 grams per MT of ore treated

along with soap, at 1500 TPD, Jhamarkotra Plant, which resulted in the

reduction of soap consumption from 2.5 Kg / MT of ore treated to 1.2 Kg /MT

of ore treated.

2000-2001

09 Reengineered the flotation circuit at 1500 TPD, Jhamarkotra Plant such that the

capacity of the flotation circuit has doubled without adding any new

equipment. This has resulted into large reduction in the power consumption.

1998-2001

24

10

(a)

Developed a very simple technique for direct application of rock phosphate in

neutral and weakly alkaline soils. The technique involves mixing and

application of Jhamarkotra Phosphate concentrate (130 Kg per hectare of +34 %

P2O5 grade) with farm yard manure ( 2 MT, for soils of 7--7.5 pH and 4 MT for

soils of 7.5 -- 8 pH, per hectare). This combination is as good as DAP applied

alone @ 100 Kg per hectare.

2000……

10

(b)

Developed PROM (Phosphate Rich Organic Manure) which is produced by co-

composting high grade phosphate rock in fine size along with organic

materials such as animal dung, green leaves or industrial wastes such as apple

pomace or press mud from sugar industry. PROM contains 15% to 18% total

P2 O5 at 15% moisture.

2001

11 All time high production and sales of rock phosphate concentrate, Industrial

beneficiation plant (RSMML), Jhamarkotra. Special efforts were made to

reduce reagent and power consumption.

1998 – 99

to

2000 – 2001

12 All time high Production of Gypsum at 14.00 Lac MT; and SMS grade

Limestone at 8.5 Lac MT during 2001-02

2001-02

13 Developed a flow sheet that incorporates a roller press to work in tandem with

the existing wet grinding ball mill. This has improved Jhamarkotra (I B P) plant

throughput from 1500 TPD to 3000 TPD, since December 2003. This has

resulted into reduction in power consumption to the tune of 18 kWh per ton of

ore treated.

1st

December

2003

14 Established a 1000 TPD Gypsum Sizing Plant for production of Agricultural

Grade Gypsum at Rawla, Rajasthan which is the first of its kind.

July, 2003.

15 Stabilized the Plant operations of 15000 TPD Phosphate beneficiation facility at

Eshidiya Mines, Jordan Phosphate Mines Company Limited, Jordan. The

average annual production of concentrate from Eshidiya plant was 0.66 million

tons from 1996 to 2006. The plant achieved 1.156 million tons during 2007,

1.438 million tons during 2008 and 1.167 million tons during 2009

April, 2007

to till date

16 It has been proved that Urea acts as a promoter in the soap floatation of

phosphate minerals.

2010

25

Achievements of Dr. D M R Sekhar at 1500 TPD Phosphate Ore Processing Plant- Jhamarkotra (March 1995 to April 2001)

A 1500 TPD plant to process low grade phosphate ores was set up and commissioned

by M/s RSMML during the year 1991-92. Dr D M R Sekhar joined RSMML in the month of

March 1995 and worked as Chief Manager and General Manager at this plant till April 2001.

The operations and process at this scale were fully stabilised during the year 1995-96. It is

during this period that the quality of soap being used in Jhamarkotra process has been

perfected, particularly for use in acidic circuits. It was found that soaps of mixed fatty acids

having the titre point in the range 22 -–26 o C and with an iodine value between 88 – 93 and

having a total fatty matter between 60 – 65 works efficiently. Higher titre value indicates the

presence of more saturated fatty acids and higher iodine value indicates the degree of un

saturation or the presence (of the fatty acids with) of double bonds. Process engineers at

Jhamarkotra plant proved by carrying out bench scale experiments that saturated fatty acids

(eg. Stearic Acid) are more efficient than unsaturated (e.g. Oleic) fatty acids, as flotation

collectors, particularly in acidic circuits. Soaps of mixed fatty acids with the above

specifications and having a typical composition can be called Jhamarkotra soap. Also alfa

olefin sulfonate (a detergent) is being mixed with soap (@ 130 gm per ton of ore treated)

since 15/4/2000 and the soap consumption has come down to 1.3 kg per MT of ore treated

from 2.5 kg PMT. RSMML is intending to patent this technology.

All out efforts are being made to adopt newer technologies to simplify the operations

and the process to reduce the ultimate cost of production. Monofilament polypropylene

filter cloth of the belt drum filter that costs Rs 6.0 lacs per piece has been replaced by

multifilament filter cloth that costs merely Rs.0.14 lacs, resulting a cost savings of Rs 62 lacs

per annum. Similarly hyper steel grinding media has been replaced by high chrome

grinding media, resulting in a reduction in the grinding media consumption from 0.8 Kg per

ton of ore treated to less than 0.2 Kg per ton of ore treated. To increase the life of

hydrocyclone apex, the material of construction was changed from soft rubber to

polyurethane and the outer shell of the lower portion of the apex was mild steel, which

resulted in the cost reduction as well as increase in the life of the spare. In fact cost reduction

efforts are through a planned scientific strategy.

The flotation circuits of the Jhamarkotra plant were constructed using Denver- Sala

flotation cells (AS-9) of 9 M3 volume which were fitted with an impeller drive motor of 18.5

kW. Plant engineers under the guidance of Dr Sekhar carried out re-engineering of the

flotation cells such that a single motor of 18.5 kW drives two cells of 9 M 3 each. This brought

down Kw/M3 from 2.05 to 1.02. Incidentally it is comparable with the lowest power draw in the world

26

claimed by Outokumpu at 1 kW / M3 for their large flotation cells. At the same time by improving

the airflow into the cells, the capacity of acid flotation circuit has been increased in each line

from 14 MTPH to 32 MTPH. This has resulted into large reduction in the power

consumption. The power consumption during the year 2000-01 was 49.1 kWh per MT of ore

treated as against the norm of 56 kWh per MT of ore treated. Statistical techniques are

successfully applied to analyse flotation process monitoring and for possible improvements

in the process. Research efforts are being made through outside laboratories and plant trials

to see if the bulk flotation circuit can be by passed. Another area of research that is of

commercial importance is the possibility of direct flotation of apatite minerals.

An important area in mineral processing where 30 to 40% of the total energy consumed is in the size reduction (crushing & grinding) operations. It is said that grinding operation is very inefficient in that less than 10% of the total input energy is utilised. Thanks to the research efforts made by engineers world over in these areas. Today energy efficient crushing grinding equipments are available of which roller press / pressure roll technology is most efficient. Scrutinising this technology for use in the Jhamarkotra process and integration of the same with the existing flow sheet is in itself a task. Dr Sekhar could develop a flow sheet that retrofits roller press into the existing grinding circuit. The proposed scheme of things were duly examined and accepted by renowned engineering consultants. The project costing around 38 crores of rupees is partly assisted by Technology Development Board, Dept. of Science & Technology, Govt. of India, by way of a soft loan of Rs 490 lacs (approx.). The project has become operational since 27/03/2003 that has resulted into reduction in power consumption by more than 18 KWh per tone of ore treated and the plant throughput increased from 1500 TPD to 3000 TPD.

As in-charge of Production, Dr. Sekhar achieved +100% targeted production at 1500

TPD Phosphate Ore Processing Plant at Jhamarkotra during the years 1998-1999, 1999-2000 and 2000-2001 and thereby setting all time records.

Achievements of Dr. D M R Sekhar at Gypsum and SMS Grade Lime

Stone Projects. As in-charge gypsum project, Bikaner, he geared up the system to produce 1.4

million tonnes of gypsum in the year 2001-02 (as against 1 million tonnes during 2000-2001) These are the highest production levels of gypsum project of M/s RSMML. During 2004-05, after the merger of erstwhile M/s RSMDC Ltd, Gypsum Division under Dr. Sekhar produced and marketed 2.8 million tonnes of gypsum, the ever highest until 19.04.2007.

As in charge of SMS Grade 0.85 million tonnes of SMS grade limestone was

produced in the year 2001-2002 (as against 0.7 million tonnes during 2000-2001). These efforts turned the loss making lime stone crushing plant of RSMML at Sanu Mines, Jaisalmer into profits for the first time since the commissioning of the plant.

27

Achievements of Dr. D M R Sekhar at Phosphate Beneficiation Plant,

Jordan.

Dr. Sekhar took up the responsibility of heading the 12000 TPD phosphate ore beneficiation plant at

Eshidiya mines of M/s JPMC Plc, Jordan in the year 2007. The plant was operational since 1996 and

the average annual production of concentrate was six lac metric tons. The annual average

production of concentrate was improved to twelve lac metric tons in the period 2007 to 2011. M/s

JPMC Plc conferred a scroll of honor in appreciation of the efforts of Dr. Sekhar in improving the

production of beneficiation plant at Eshidiya mines .

Profile of Dr D.M.R. Sekhar

Dr Sekhar was conferred National Mineral Award for the year 1997, by

Government of India and Mineral Beneficiation Award (2002) by the Indian Institute of Mineral Engineers. The Institution of Engineer (India) honoured Dr Sekhar by conferring Mining Engineering Design Award, during Indian Engineering Congress on 17.12.2004.

Dr Sekhar joined M/s Hindustan Zinc Ltd (H Z L) in the year 1979, after

obtaining a degree in chemical engineering and a post graduate degree in mineral process engineering from Andhra University, Visakhapatnam.

Dr Sekhar served M/s HZL at their 4000 TPD lead-zinc processing plant as probationer engineer and engineer (O.D.) at Zawar Mines and as development engineer at their Central Research & Development Centre, Udaipur. After a brief tenure at Sargipalli copper-lead plant of M/s HZL, Dr Sekhar joined M/s Rajasthan State Mineral Development Corporation (RSMDC) as in charge of Fluorspar Processing Plant at Dungarpur and Graphite Processing Plant at Banswara. He eventually headed both Fluorspar and Graphite projects. During 1995 Dr Sekhar joined M/s Rajasthan State Mines & Minerals Limited (RSMML) as in charge of 1500 TPD low grade Phosphate Ore Processing Plant located at Jhamarkotra, Udaipur. Dr Sekhar has completely reengineered the 1500 TPD plant improving production and reducing operation costs. He took lead in designing the grinding circuit to enhance the plant capacity to 3000 TPD by incorporating high pressure grinding rolls (roller press) in the grinding circuit, which is in operation now. Roller press is known to be the most energy efficient grinding machine in the cement plants. Jhamarkotra plant will be the first mineral processing plant in the world that uses roller press successfully. The incorporation of roller press reduced power consumption by 15 to 18 kWh per ton of ore treated, resulting into a savings of 100 million

28

rupees every year on power alone.After promotion to the position of General Manager, Dr Sekhar was made head of Gypsum and SMS Grade Limestone operations of M/s RSMML at Bikaner and Jaisalmer during 2001. Dr Sekhar could improve the viability of gypsum operations at Bikaner by increasing the production level of gypsum from 1

million tons to 3 million tons per annum. SMS grade limestone operations at Jaisalmer were made profitable from 2002-03 (by increasing the capacity of limestone sizing plant without adding new equipment), which otherwise was a loss making project since inception, i.e. 1993-94. Dr Sekhar designed a 1000 TPD gypsum sizing plant to produce agriculture grade gypsum, which is in operation since July 2003.

While being a shop floor production engineer since 1979, Dr Sekhar has been

pursuing research activities both on applied and theoretical aspects simultaneously. Dr Sekhar has produced 47 technical research papers on various topics that include applied botany and environment, flotation studies, surface chemistry, statistics applied to quality engineering, flotation kinetics, design of flotation and grinding circuits. He was conferred Ph.D. degree during 1996 by Andhra University. His recent area of interest being Phosphate Rich Organic Manure(PROM) which goes across product and plant design and agronomic studies on PROM. PROM can revolutionize the use of phosphatic fertilisers as it is proved more efficient than di ammonium phosphate (DAP) and is cheaper than d a p.

29

Annexures

30

31

32

33

34

35

36

37

38