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China Clay

China Clay is also called "KAOLINE", it is one of the essential Raw material for Ceramic Industries, China Clay does not swell on adding water & Alumina present in Clay do not form Isomorphous series with any other metallic compound.

China Clay is a naturally hydrated Aluminum Silicate. It is one of the most abundantly available clay in the Earth's crust. A large variety of china clay is mined all over India. China Clay is the heart of potteries, tiles, ceramics, and many other industries.



  • As extender and filler in Paints, Paper, Detergents, Bakelite Powder and in Rubber industries etc.
  • China Clay is the heart of several industries like potteries, tiles, ceramics, glass and others.
  • Paints China Clay is used in wide varieties of paints like distemper, cement primer, wood primer, emulsion paint, texture coating, spray plaster, putties, fillers and undercoats.
  • Paper It is used in varieties of papers, cardboards, hard boards and others
  • Plastic It is used as a filler in combination with others to impart strength and smoothness.
  • Electrical Industry It is used for electrical insulation, high voltage insulation compounds electrical wires.
  • Cosmetic & Soap China Clay is used in toothpaste, cosmetic and soap industry.


Chemical Composition of China Clay Powder

  • Chemical Formula : Al2O3 , 2SiO2, 2H2O


Results of Analysis Percent

  • Silica SiO2 49.03
  • Alumina Al2O3 32.22
  • Ferric Oxide Fe2O3 0.85
  • Titanium Oxide TiO2 1.34
  • Manganese Oxide MnO Nil
  • Magnesium Oxide MgO 0.65
  • Calcium Oxide CaO 1.36
  • Sodium Oxide Na2O 0.64
  • Potassium Oxide K2O 0.34
  • Loss on ignition LOI 13.55


Physical Properties

  • Oil Absorption 30.70
  • Acid Soluble Matter 4.97
  • PH of 10% Solution 8.32
  • Specific Gravity 2.52
  • Whiteness by reflection compared with MgO taken as 100 % 87.00
  • Material retained on 300 mesh BS sieve (wet) 1.00
  • Material retained on 400 mesh BS sieve (wet) 3.2
  • Bulk density 0.52 gms/ml


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