MOD 1 CAP 3 Sepax Separator
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■ High efficiency
■ Low initial and maintenance costs
■ Highly adaptable and versatile
■ Feed system extracts nibs and reduces wear
SEPAX Separator
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F.L.Smidth is the leading supplier of separa-
tors to the world’s cement industry, provid-
ing various types of high-efficiency separa-
tors for a wide range of applications.
Decadesof k now-how in high-effi ciency
separation enablesF.L.Smidth to supply the
most suitable separator for almost any
application. The SEPA X concept – intro-
duced with the original SEPAX separator
and later adopted for separators of derived
design - has proved hi ghly successful i n the
cement industry.
Low initial costsThe simple and space-saving design of the
SEPA X mak es it an economi cal investment.
The separator is fi tted wi thin a self-support-
ing shell structure, and the entire separator
unit with cyclones is supported by one ring-
shaped support only. Reducer and motor
are placed in line with the bearing housing,
forming a compact and rigid drive-line unit.
Finally, the SEPAX has one feed point placed
at a low level, minimising the height of the
separator feed elevator and simplifying the
layout.
The SEPAX t op seal pri nciple:
1 Air flow across rotor (1) is limited by n arrow gaps (2)
2 Reduced air flow across the rotor top, fitted wit h
deflector wi ngs (3), practi cally elim inat es passage of
coarse material t o th e fines outlet (4)
3 Coarse material that is inclined to pass in a ballistic
curve (5) across the r otor is intercepted by t he
chromium carbide protected seal ring (6)
Low initial cost
• Self-supporting shell
structure
• Standardrangedriveparts• One support for the
complete separator
• One feed point in low
position
• Most of the ducting
integrated
Low operating costs
• High-efficiencyseparation
• Highly effective nibs
extraction minimises
clogging of mill grates,
thus enabling long-
lastingfull millcapacity
Low maintenance costs
• Wear protection selected
for cost efficiency and
based on experience
• Automatic grease lubri-
cation with enclosed
refill system
• Practically eliminated
nibs recirculation reduces
maintenance work and
downtime caused by
clogged mill grates.
• Designed to enable easy
access for inspection and
replacementof compo-
nents
Highly flexible and versa-
tile. Adaptable to a wide
range of grinding and dry-ing systems such as
• All cement grinding ball
mill systems
• Fully or semi air-swept
raw grinding ball mills
• Flash driers
Main features
M
I L L
S Y S T E
M
S
6 6
5 1
2 2
7
3
4
Parallel flow th roug h rot or
for maxim um equality, i.e.:
sharpest possible separati on
Rotor top principle
Guide vane wit h
wear p la te
Wear plate:
chromium carbide v - partic le,
re la t ive to ro to r
v - partic le, relative to stator
v - ro to r
SEPAX ro tor and
guide vane detail
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Flexible and versatileThe SEPA X is designed to be equipped with
drives ranging from low power drives for
raw grinding to pow erful drivesfor the
finest grinding whi le still uti lising the full
design air flow.
This ensuresmaximum effi ciency regard-
less of the end product quali ty specifi ed.
The SEPAX can be equipped w ith separa-
tor-supported cyclonesor stand-alone
cyclones for the collection of fines.
The feed concept is based on the material
being suspended in the vertical air flow
through the riser duct. This makes the
SEPA X highly adaptable to variousraw
grinding applications. C onsequently, the
separator can be integrated into the mill
venting system, in the case of fully or semi
air-swept m ills, or installed on top of a flash
dryer that formsthe riser duct leading up to
the SEPAX.
Low operating costsThe SEPA X is very efficient in operation and
cutsspecifi c energy consumpti on to a mini-
mum, while maintaining maximum output.
A highly effective system for removal of
worn grinding media from the mill dis-
charge material meansless clogging of
diaphragms. This optimises mill performance
and enableslong-term continuousoperation.
Low maintenance costsThe SEPAX is designed to be easily service-
able. Worn and broken grinding media are
not recycled, which helps to save mainte-nance work on the mill grate plates. The
removal of nibs from the separator feed
reducesthe wear on crit ical separator parts.
Easily accessible and serviceable wear pro-
tection i s fi tted where appropriate and the
bearing unit can easily be replaced.
SEPAX system w ith b ag filter f or collecti on of fines:
This system ensures maximum product cooling.
SEPAX system wi th cyclones
for collection o f fines:
Lowest initia l and operating
costs. Recuperat ion of heat
enhances drying of wet
slag, puzzolana or ot her
additives.
SEPAX system
fo r raw gr ind ing
installation,
suitably
in teg ra ted in to
the mi l l ven t l ine .
Finishedproduct
New feed
Nibsdisposal
Mill product
Reject flow
Finishedproduct
Reject flow
Mill product
New feed
Finishedproduct
Nibs disposal
Mill product
Reject flow
New feed
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A ir outlet
Flexible coupling
M otor
Reducer
Rotor
Reject collecting guide vanes
Planetary separator supported cyclone
Ring shaped support
Fine material outlet
Reject outlet cone valve
Feed point
Pneumatic unloading valve
Nibs disposal container
1 10 100
Particle size, micron
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
d7 5x 50
d 25
P e r c e n t a g e
o f f e e d r e j e c t e d
Tromp curve
The tromp curve indicating the per-
centage of feed rejected in relation
to part ic le size has the fol lowi ng
characteristics:
The cut size, x50, expresses the exact
partic le size at which the quant it ies
of fine and coarse material are equal.
The by-pass value, , expresses the propor t ion o f separato r feed tha t
passes through the separator
unp rocessed and leaves it as coarse
material.
The sharpness facto r , = d25 /d75 ,
expresses the inclination of the
Tromp curve and th us the sharpness
of th e separation.
1
2
3
5
7
9
8
1
2
3
4
5
6
7
8
9
10
11
12
13
11
12
13
10
6
4
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Densit Wearcast 2000The material isa 30 mm t hick cement
bound composition containing 55% hard
(9 M ohs) grainsof corundum (Al2O 3).
Densit W earcast is easy to install and repai r.
It has been tested to outlast basalt by a
factor of 1.3 when exposed to sandblasting
at various inclinations.
Hardox 400This is a world-know n, abrasion resistant,
weldable steel plate, which is through-
hardened to more than 360 HB and is
recognised for its superior abrasion resist-
ance properties.
Chromium compoundwear plate
This material isa m ild steel plate with a
thickness of 4 to 8 m m on to which a
4 - 5 mm layer of hardfacing is welded. The
hardfacing consistsof primary chromium
carbides in a eutectic matrix wi th eutectic
chromium carbides. T he hardness of the
matrix reaches 600-750 HV, the grains 1400
HV. The temperature limit is 400 deg C .
High carbon steelThis is a low cost and highly versatile mate-
rial which is used in placeswhere moderate
wear occurs.
Mild Steel
Wear Protection
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Data in this brochure isi ntended for preliminaryproject planning only. M anufacturer reservesthe right to modifyequipment detailsand/or specificationswithout notice.
USAF.L.Smidt h Inc.
2040 Avenue C
Beth lehem , PA 18017-2188
Tel: + 1 610-264-6011
Tel: + 1 800-523-9482
Fax: + 1 610-264-6170
E-mail: info@fl smidth.com
INDIAFuller India Limited
Capita l Tow ers
180, Kodamba kkam High Road
Nungambakkam
Chennai 600 034
Tel: + 91 44-827-6030/8228623
Fax: + 91 44-827-9393
E-mail: fi l@fullerindia .co.in
DENMARK F.L.Sm idt h A/S
Vigerslev Allé 77
DK-2500 Valb y
Copenhagen
Tel: + 45 36 18 10 00
Fax: + 45 36 30 18 20
E-mail: info@fl smidth.com
www.flsmidth.com
Up-to-date addressesof w orldwidesubsidiari esand salesoffi cesareavailable from our website
0 1 - 0
2 - 2
5 1
G r a m s t r u p D e s i g n A p S
Dimensions and characteristics
D
C C
E
A 2
A 1
B B
190 7.3 3108 N.A. 5704 N.A. 1900 N.A.
212 10.0 3500 6467 2120
236 13.5 3933 7296 2360
250 15.7 4189 3754 7772 3040 2500 840
265 18.3 4460 4004 8285 3258 2650 900
280 21.1 4736 4262 8792 3492 2800 965
300 25.1 5102 4608 9468 3800 3000 1050
315 28.3 5376 4862 9975 4036 3150 1115335 32.8 5746 5213 10647 4344 3350 1200
355
375 42.9 6485 5907 11989 4976 3750 1375
400 49.9 6947 6342 12822 5374 4000 1485
N.A. N.A. N.A.
N.A. N.A. N.A.
37.7 6115 5558 11319 4668 3550 1290
425 57.4 7412 6781 13656 5772 4250 1595
450 65.4 7876 7217 14488 6154 4500 1700
475 73.9 8341 7652 15321 6552 4750 1810
500 83.0 8807 8088 16152 6932 5000 1915
530 94.5 9365 8611 17148 7402 5300 2045
560 106.8 9923 9130 18145 7872 5600 2175
Size Air flow A1 A2 B C D E
m3/s mm mm mm mm mm mm