124 Pneumatic Conveying

8/11/2019 124 Pneumatic Conveying

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Pneumatic Conveying

Optimal solutions forSpecialised Mechanical Equipment

TENOVA is a worldwide supplier of advanced technologies, products and engineering services forthe iron & steel and mining industries.


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PNEUMATIC CONVEYING SYSTEMS

Tenova TAKRAF ensures the most cost-effective solution,

providing state-of-the-art products, system design,

manufacture, turnkey installations and after-sales service.

Lean-phase pneumatic conveyors (pressure andvacuum).

Medium-phase pneumatic conveyors.

Dense-phase pneumatic conveyors.

Pneumatic drying and transport systems.

Tenova TAKRAF markets the Mactenn range of dense-

phase pneumatic conveying systems.

APPLICATIONS

Minerals and metals (eg base metals, gold, platinum). Precious gems, ie diamonds, etc.

Chemicals and plastics / resins.

Food / pharmaceuticals.

Pulp / paper.

Utility power plants.

And many other processes and applications.

BENEFITS

Low material velocity along the pipeline considerablyreduces wear and maintenance. Other benefits are

low air consumption and energy cost.

little or no degradation of fragile materials.

small reception hopper filters.

no segregation of conveyed mixtures.

environmentally acceptable as total product contain-

ment in the pipeline eliminates spillage, dust and

hygiene problems of exposed product handling.

compact equipment which can be located beneath

discharge mechanisms.

state-of-the-art automatic control and fault diagnostics

and operator friendly intervention for manual control.

PNEUMATIC DRYING AND TRANSPORT

SYSTEMS

The Pneumo-Drier dries a wet particulate solid, while

conveying it along a pneumatic conveying system driven

by heated air. Used in the diamond industry to handlekimberlite, alluvial diamond ore and marine silica, Pneumo-

Driers also convey and dry other materials such as coal,

foundry sands, salt, crushed rubber and platinum.

The Pneumo-Drier is a Bateman owned patent.

THE PNEUMO-DRIER

Controls drying of and handles moisture levels of up

to 25 %, depending on the nature of the material. Maintains system efficiency through continual on-line

temperature monitoring to ensure effective and effi-

cient drying and accurate product dosage.

Saves cost, being simple and robust with few compo-

nents, replacing dual drying and transport systems.

Enhances security by securely enclosing material from

entry to delivery, with few handling stages.

Compact and flexible, requiring far less headroom than

existing systems, whether new or replacement.

Allows for easy retrofitting into existing establishments,

due to flexibility of pipe routing. Environmentally friendly, completely enclosing product

to prevent contamination of product and surrounds.

Provides optimum availability due to low maintenance.

SPECIFICATIONS

Conveys up to 30 t/h.

Dries at up to 350 C, depending on material thermal

properties.


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Tenova TAKRAF is a key supplier of equipment and systems for open pit mining and bulk handling, having provided

hundreds of complete systems, as well as individual machines to clients all over the world. Comminution systems for

milling and crushing requirements in mining and mineral processing are based on a track record dating back to the

1920s. Air pollution control, specialised handling equipment, and technology for the cement and fly ash industries and

pneumatic conveying, ensure selection of optimal processing options. A comprehensive after sales service is provided.

Bateman Engineered Technologies (previously part of the Bateman Engineering Group) is now trading as Tenova TAKRAF.

Tenova TAKRAF has a wide range of pneumatic conveying systems, as well as vacuum systems, suitable for conveyingdiverse particulate materials. The patented Pneumo-Drier is a technological breakthrough, combining pneumatic

conveying with product drying.

Tenova Mining & Minerals is a total integrated solutions provider to the global mining, bulk materials handling and

minerals beneficiation and processing sectors, offering innovative technological solutions and full process and

commodity knowledge across the mining industry value chain.


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LEAN-PHASE PNEUMATIC CONVEYING

Lean-Phase Pneumatic Conveyor systems discharge

granular material from one or many points and are

economical and efficient for conveying relatively low

tonnages over short routes. They are suitable forconveying food, plastics, chemicals, powders, wood chip,

sawdust, tobacco, cement, scrap metal, ores and more.

Pressure systems are used for multi-discharge point

transfer systems.

Optimum hygienic conditions vital for food products.

Optimum availability as it requiries minimal mainte-

nance.

Throughputs from a few kg/h to over 50 t/h.

Handling of particle sizes from


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MACTENN PRODUCT RANGE

MINIMAXFLO

The MiniMaxflo is a sensible altenative to high material

conveying systems, such as lean-phase and medium-

phase pneumatic conveying systems. High efficiencymaterial transfer without material degradation is achieved

in a very compact, low cost system. This is a perfect

choice for low transfer rate requirements for fragile and

abrasive materials.

MAXFLO

The ultimate system for handling difficult-to-convey

materials and hot, abrasive and wet materials, or for

providing gentle handling of products to prevent

degradation of friable materials or separation of blendedmaterials.

SUPERMAXFLO

The SuperMaxflo achieves a solid dense phase

conveying regime for very low material velocities, with little

or no degradation of the most fragile materials, such as

food products.

MACPUMP & VARIFLO

The Macpump conveys high capacities over great dis-

tances. It is capable of conveying materials such ascement, lime and fly ash at rates of 250 t/h up to dis-

tances of 2,000 m.

The Variflo is a continuous transfer system for longer

distances and rates in excess of the Maxflo range.

MAXSANDFLO

Designed specifically for dry sand conveying, MaxSandflo

is based on proven dense phase pneumatic principles. Air

introduction, simplified system controls, and top discharge

have been designed specifically for this use. MaxSandflo

can be manufactured without custom modifications and

sold off-the-shelf for fast, easy installation.

MULTIASHFLO

Designed specifically for conveying hot, abrasive ash,

MultiAshflo conveys bottom ash, clinkers or fly ash from

fluid boiler beds, baghouses or electrostatic precipitators

at temperatures up to 350 C. It may be arranged in

multiples of one to 10 units in a single line. It uses about

50 % less power than existing fly ash conveying systems.


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MACTENN INFLATEKVALVE

Mactenn Inflatek Valves are fitted to all the Mactenn

dense phase pneumatic conveying systems.

Used in a variety of applications in almost every process,

the Mactenn Inflatek Valve enables continuous reliableoperation, where conventional valves fail to perform.

Other benefits include

continuous wear compensation when handling abra-

sive materials or operating under high pressure

differential.

inflatable seal provides compensation throughout

temperature range of 0 C to 350 C.

closes and seals through packed material.

seal protection by cleaning ring removing particles

adhering to the dome surface. drive options include automatic double acting actua-

tors.

reliability heavy duty valve rated for hundreds of

thousands of cycles between inspections in approved

applications.

The Mactenn Inflatek inflatable seat valve is an innova-

tive departure from the traditional valve seat approach to

achieving sealing efficiency and acceptable valve seat life.

It is unique in its ability to close and seal through a moving

column of material.

PRESSURE TIGHT SEALING

The inflatable flexible seats entrap particles that are nor-

mally the cause of seat erosion. Particles are induced to

move across valve seats under the influence of pressure

differentials on either side of the closing member.Entrapping particles within a flexible face during the

period of valve closure, prevents particle movement and

considerably reduces valve seat wear. Inflatable seats

allow automatic wear compensation. The seal is easily

removed for inspection.

Standard Options

Size Options: 50 mm to 400 mmDesign Temperature: 100 C to 350 CDesign Pressure: 7 Barg.Flanges: PN 16, PN 10 or ANSI 150Construction: Cast Iron A278, Stainless Steel 304/316.

Non-Standard Options

Size Options: To 1,100 mmDesign Temperature:


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IBAU SCREW PUMP

IBAU Screw Pumps offer a number of advantages.

The short cylindrical space between the end of the

screw and the non-return flap is filled with pulverised

material during conveying, which means there is noblowback of air. Therefore

material feeding is variable between 0 100 %.

pulsation free charging of material into conveying

line due to sealing plug.

low wear.

no penetration of the screw shaft into the

pressurised discharge box.

The screw is secured in a sturdy barrel with a cone-

shaped inlet connection. This means

quieter running even under no-load conditions. easy removal and refitting of the screw, without

disturbing the bearing seats.

IBAU FPIPE

The IBAU Fpipe conveying system for material removal is

a combination of a normal pneumatic conveying system

and airslide transport.

Since the final conveying air velocity inside the Fpipe

is 12 14 m/s (normal pneumatic conveying system

is 20 22 m/s), the system needs approximately 30 40 % less conveying air, and energy consumption

is reduced accordingly.

As the material velocity is approximately 66 % of the

air velocity, it is also lower than usual with resulting

lower abrasive effects.

LEAN-PHASE VACUUM CONVEYING

Suction technology is designed to suit harsh mining and

industrial conditions. Simplicity of design, control and

maintainability is emphasised.

Tenova TAKRAF has the rights to all intellectual property

of Vac Air Technologies and is the sole provider for the

design, manufacture, servicing, installation and supply of

all spare parts for all new and existing pneumatic

equipment, both in positive and vacuum applications.

Suction machines are high performance machines

offering maximum productivity, minimal maintenance and

simple operating techniques. They are

used successfully to recover fines, diamonds andother valuable materials in the mining industry.

ideal for industrial cleaning.

ideal for dust-free conveying of bulk materials up to

600 C.

SPECIFICATIONS

Range from small but powerful 3 kW to 325 kW units.

Conveying distances in excess of 300 m horizontally

and up to 70 m vertically. Negative pressure down

to -90 kPa, depending on product and conditions.

Can be mobile to enable transportability from plant to

plant, or stationery.

Suction equipment sucks up and transports wet and dry

materials via a pipe column from pick up points to a

collector. The unit may be installed at a reasonable

distance from the collector, depending on the length of

the suction pipeline.

The collector is a standard drop out unit, a cyclone or a

complete filter unit with jet repulse cleaning. This

provides ease of cleaning, as only the vacuum flexiblehose and tools need to be moved.


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www.tenovagroup.com

www.bet.bateman.com

TECHINT GROUP MINING & MINERALS

Tenova TAKRAF

Tenova Mining & Minerals (Pty) Ltd1 Kramer RoadBedfordviewJohannesburgPO Box 75996Gardenview, 2047

South Africaphone +27 11 201 2300fax +27 11 455 [email protected]

TAKRAF GmbHTorgauer Strae 33604347 LeipzigGermanyphone +49 341 2423 500fax +49 341 2423 [email protected]

Bahnhofstrae 2601979 LauchhammerGermanyphone +49 3574 854 0fax +49 3574 854 [email protected]

Tenova S.p.AVia Albareto, 3116153 GenoaItalyphone +39 010 6054067

fax +39 010 [email protected]

Tenova MINING & MINERALS

Tenova Mining & Minerals (Pty) Ltd58 Emerald Parkway RoadGreenstone Hill, Ext 21 1609PO Box 7737Johannesburg 2000South Africa

phone +27 11 899 9111fax +27 11 899 [email protected]

124 Pneumatic Conveying

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