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Gold Stone Minerals



Foundry Grade Bentonite Powder


Foundry Grade Bentonite Powder

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.


We maintaining following parameter which 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

We are making foundry grade Bentonite powder as per customers specification.

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Specifications

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 + 20 400 + 20 400 + 20 400 + 20
Swelling capacity cc IS 12446:1988 30 min 30 min 30 min 30 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 - 10.2 9 - 10.5
Liquid Limit ml/100 gms IS 12446:1988 800 min 830 min 830 min 830 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

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