Bentonite

Foundry grade

All cast iron, steel & malleable iron foundries are almost using Bentonite with cost efficient results, kutch region is famous for a very good sodium Bentonite for casting industries. For continuous mould making also kutch Bentonite is used successfully. Our foundry grade Bentonite powder gives good flow ability. Compact ability and thermal stability for the production of high quality castings.

Following parameters help to make high quality castings

  • High gelling time which gives high strength in less mulling time
  • pH Maintaining
  • Active clay maintaining
  • High strength on good compatibility
Physical properties Unit Protocol Indounibond Indoexpobond Iindomaxbond Seabond
Base Exchange Capacity meq/100 gms IS 12446:1988 110 110 110 110
Methylene blue value mg of MB/gm IS 12446:1988 400 + 20 420 + 20 420 + 20 420 + 20
Swelling capacity cc IS 12446:1988 30 min 35 min 30 min 35 min
Gelling time sec IS 12446:1988 Instantaneous Instantaneous Instantaneous Instantaneous
Gel formation index ml IS 6186:1986 80 – 90 85 – 95 80 – 90 85 – 95
pH Value pH IS 6186:1986 9.0 – 10.0 9 – 10.2 9.0 – 10.2 9 – 10.5
Liquid Limit ml/100 gms IS 12446:1988 800 min 830 min 830 min 850 min
Green compressive  psi IS 12446:1988 12 12.5 13 12
Strength using 40/60             
sand in the ratio 10:4 (B:W)            
Wet tensile strength (10:4 = B:W) N/cm2 IS 12446:1988 0.20 – 0.25 0.25 – 0.30 0.20 – 0.25 0.30 – 0.35
Sieve analysis (WET)   IS 6186:1986        
Passing 100 mesh %   99 min 99 min 99 min 99 min
Passing 200 mesh %   90 min 90 min 90 min 90 min

Drilling grade

Bentonite is as a mud constituent for oil- and water therefore it helps well in drilling. Its role is mainly to seal the borehole walls, to remove drill cuttings and to lubricate the cutting head. The special higher mud yield results in using less quantity of Bentonite for the same standard mud. This results in lesser requirement of Bentonite.

  • Retains thixotopic properties when met with brine and high temperature in deep drilling
  • Gives high barrel yield
  • Withstands formation pressure

API 13A Section – 4 Grade Bentonite Powder:
Physical Analysis:

PROPERTIES PROTOCOL UNIT REQUIRED RESULT
Viscometer Dial Reading at 600 rpm API Spec. 13A:2004/ ISO 13500: 1998 r/min 30 34
Yield Point / Plastic Viscosity Ratio API Spec. 13A:2004/ ISO 13500: 1998 _ 3 Max 2.85
Filterate Volume API Spec. 13A:2004/ ISO 13500: 1998 ML 15 Max 14.4
Moisture Content API Spec. 13A:2004/ ISO 13500: 1998 % by weight 10.0 max. 10
Dry Screen Analysis(Residue Greater than 75 Microns)% API Spec. 13A:2004/ ISO 13500: 1998 % by weight 4.0 max. 3.0 – 4.0

API 13A Section – 6 (OCMA) Grade Bentonite Powder:

PROPERTIES PROTOCOL UNIT REQUIRED RESULT
Viscometer Dial Reading at 600 rpm API Spec. 13A:2004/ ISO 13500: 1998 r/min 30 40
Yield Point / Plastic Viscosity Ratio API Spec. 13A:2004/ ISO 13500: 1998 _ 6 Max 4.7
Filterate Volume API Spec. 13A:2004/ ISO 13500: 1998 ML 16 Max 15.4
Moisture Content API Spec. 13A:2004/ ISO 13500: 1998 % by weight 13.0 max. 10 -12
Dry Screen Analysis(Residue Greater than 75 Microns)% API Spec. 13A:2004/ ISO 13500: 1998 % by weight 2.5 max. 2.0

OCMA DFCP – 4 Grade Bentonite Powder:
Physical Analysis:

PROPERTIES PROTOCOL UNIT REQUIRED RESULT
Yield OCMA DFCP-4 bbls/2000lbs 90 min 99 – 115
A.P.I. Filterate Loss OCMA DFCP-4 ml 15.0 max. 13 – 14
Moisture Content API Spec. 13A:2004/ ISO 13500: 1998 % by weight 15.0 max. 10.0 – 12.0
Dry Screen Analysis 100 Mesh Sieve OCMA DFCP-4 % by weight 98.0 min. 98.5
Wet Screen Analysis 200 Mesh Sieve residue OCMA DFCP-4 % by weight 2.5 max 1.75