(A).
FOUDRY GRADE:
SR.NO. PARAMETERS SPECIFICATIONS
1. FREE SWELLING VALUE 25 ml Min. to 27 ml.
2. GEL INDEX 50% Min.
3. MBA VALUE 380 mg / gm Min.
PASSING THROUGH 200
4. 75% Min.
MESH
5. pH VALUE 9 Min.
6. MOISTURE CONTENT 15% Max.
7. GCS ( 10 : 4 ) 10 PSI Min.
(B). FOUNDRY GRADE : PRINCE BOND
SR.NO. PARAMETERS SPECIFICATIONS
1. FREE SWELLING VALUE 28ml Min. to 30 ml.
2. GEL INDEX 60% Min.
3. MBA VALUE 400 mg / gm Min.
PASSING THROUGH 200
4. 80% Min.
MESH
5. pH VALUE 9.5 Min.
6. MOISTURE CONTENT 12 - 15% Max.
7. GCS ( 10 : 4 ) 10 - 12 PSI
(C). FOUNDRY GRADE : PRINCE SUPER BOND
SR.NO. PARAMETERS SPECIFICATIONS
1. FREE SWELLING VALUE 32ml Min. to 35 ml.
2. GEL INDEX 60% Min.
3. MBA VALUE 420 mg / gm Min.
PASSING THROUGH 200
4. 85% Min.
MESH
5. pH VALUE 9.5 Min.
6. MOISTURE CONTENT 12 - 15% Max.
7. GCS ( 10 : 4 ) 10 - 14 PSI
Specification for Drilling / Pilling grade of Bentonite powder.
(Pil –O-Gel grade)
VISCOSITY
30 min
(DIAL 600 READING)
FILTER LOSS
18 max
(22.5 grm Bentonite / 350 ml Distril Water)
SWELLING VALUE
24 min
(2grm Bentonite / 100ml D.Water)
LIQUID LIMIT 500 min
MOISTURE / WATER CONTENT 12% max
DRY SCREEN ANALYSIS
(Pass through 100 mesh / 0.150 micron sieve) 99%
min
(Pass through 100 mesh / 0.075 micron sieve) 80%
min
Specifications of Civil Engg. & Pilling grade of Bentonite powder.
Moisture 12.0%max.
Viscometer Reading
30.0 min.
(600 r.p.m.)
Filtrate 18.0 max.
PH Value 9.5 min.
Liquid Limit 450 min.
Sieve Analysis
98 % min.
(Pass through 100 mesh sieve.)
(Above results are taken after preparing 6.43% slurry of Bentonite powder with Distilled water (i.e.
22.5 grm Bentonite/350 ml D.water.)
Specifications of O.C.M.A.( DFCP – 4 ) grade Bentonite powder.
Moisture 13.0% max.
Viscometer Reading
30.0 min.
(600 r.p.m.)
16.0
Yield
c.m.min.
Filtrate 16.0 max.
Sieve Analysis 98 % min.
(Above results are taken after preparing 7.5% slurry of Bentonite powder with Distilled water.)
Specifications of O.C.M.A. grade / A.P.I.- 13 A ( Section 6 ) grade Bentonite powder.
Moisture 12.0% max.
Viscometer Reading
30.0 min.
(600 r.p.m.)
Grit 2.5% max.
Filtrate 16.0 max.
PV-YP Ratio 6.0 max.
Sieve Analysis
98 % min.
(Pass through 100 mesh sieve.)
(Above results are taken after preparing 6.43% slurry of Bentonite powder with Distilled water (i.e.
22.5 grm Bentonite/350 ml D.water.)
Note: Although we take enough care to maintain our quality standards as per guidelines of ISO
9001:2000, but here one should always keep in mind that Bentonite is a mineral found naturally &
hence minor variations may tend to occur sometimes.
Specifications of SPECTA BOND GRADRE of Sodium Based Bentonite Powder for foundry.
SR.NO. Physical properties Specta Bond Grade
Sieve analysis
Min 99%
1. 100 mesh
Min 85%
200 mesh
2. Moisture at 105-110deg c 9-12%
Base exchange capacity
3. Min 100
(meq/100gm)
Swelling Capacity.
4. 23-27
2gm/100cc)
5. Gelling time(10%) 45 Sec.
6. ph—2%suspension 8.0-9.0
Methylene blue value
7. 390
(mg/gm of sample)
8. Montmorillonite 75%
Green compressive strength
9. Min.10psi
(B:W=10:4)
10. Gel formation index Min55
11. Liquid Limit 500
12. Swelling Index 30
NOTE: -This mineral (Raw Bentonite) is xcavated from mines. It is in clay form and mostly composed
of the mineral “MONTMORILLONITE” Mixed with some related minerals like BEIDELLITE.
OCMA – DFCP
Oil well drilling Bentonite Powder Lumps
Properties Redg Result
Barrel Yield 16m3/1m 18.5
Filtrate Volume 15 mls max 14-mis
Moisture Content 15 % max 11 %
Dry Screen
99 % 23-27
Analysis–100 mesh
Wet Screen
2.5 % 1.8 %
Analysis-200 mesh
II API – 13 A GRADE
600 Dial Reading 30 min 38 %
Yield Point Plastic
Velocity Ratio 3 L max 26
Filtrate Volume 15 mls max 9.5 %
Wet Screen Analysis
residue M-75 4 % max 1.3 %
micron sieve
III FOUNDRY GRADE
Swelling Capacity
25 % 30 %
2 gms / 100 mts
Liquid Limit 450 % 530 %
Green Comp
Strength 10 – psi 10.8 – psi
( 6.3 )
Dry Comp Strength 60 – psi 63 – psi
Gelling Time
60 – sec instant
(1gm/10 mts)
Base exchange
85 – meq 93 – meq
Capacity
200 mesh 85 % 90 %
Moisture content 12 % max 11.3 %
Applications
Bentonite due to its high swelling capacity can be put to optimum utilisation for various industrial
purposes.
Bentonites with sodium ions depict high swelling capacities and good bonding properties. They are
supplied to many leading foundries in order to cater to their requirement of high pressure moulding
lines in India and abroad. Being one of the leading manufacturers, exporters, distributors of Bentonite
Clay based products our materials are used worldwide in a variety of applications such as Oil, Gas and
water well drilling, metal casting, environmental construction and remediation, cat litter, cosmetics and
pharmaceuticals etc...
The bentonites produced in Kutch region depict high swelling properties and can be used for various
industrial applications which include:
IRON ORE PELLETIZATION:-
Kutch bentonites have a higher percentage of iron which makes them ideal for iron ore pellets with
maximum percentage of iron. They are used as a binding agent , for iron ore fines to be converted into
spherical pellets suitable as a feed material for blast furnaces for pig iron production etc..
FOUNDRY: -
Bentonite being a bonding material facilitates in the preparation of molding sand for ferrous and non-
ferrous casting. The unique properties of bentonite yield green sand moulds with compactibility and
stability for production of high quality castings.
CAT LITTER:-
Bentonite is used for Cat litter. Sodium bentonites are the most suitable for cat litter as it has the
advantage of absorbing refuse by forming clumps and leaving the remain product intact.
CONSTRUCTION AND CIVIL ENGINEERING: -
Bentonite due to its viscosity and plasticity is used in Portland cement and mortars. The Kutch
Bentonite has excellent filtration properties which makes it ideal for all water proofing activities and
acts as an environment protection utilization.
DRILLING: -
The conventional use of bentonite with special higher mud yield results in using less quantity of
Bentonite. The main roles are mainly to seal the borehole walls, to remove drill cuttings and to
lubricate the cutting ahead.
As mentioned below, the bentonite due to its versatility has a wide range of applications.
Foundry
Pelletising
Construction and Civil Engineering
Geosynthetic Clay Liners for Environment Protection (An AshapuraVolclay product)
Oil & Water Well Drilling
Oils /Liquor/ Food Markets
Agriculture
Pesticides Carriers
Ashapura brands for Animal feed
Carrier for Fertilizer
Fillers for Pharmaceuticals, Cosmetics and Medical Markets
Detergents
Paints, dyes and polishes
Cat Litter
Paper
Ceramics
Catalyst
Electrical Earthing
Water Proofing
