Calcined kaolin

Short Description:

Kaolin is a non-metallic mineral. It is a kind of clay and clay rock dominated by kaolinite clay minerals. The pure kaolin is white, fine, soft and soft, with good plasticity and fire resistance. Mainly used in papermaking, ceramics and refractory materials, and secondarily used in coatings, rubber fillers, enamel glazes and white cement raw materials.

Product Detail

Product Tags

Technical parameter 



Silicon dioxide,   %



aluminium oxide,  %


Ferric oxide,  %



Titanium dioxide,  %



Loss of ignition,  %


Water content




Oil absorption



  1. Paper industry: calcined kaolin ink has good absorption and high hiding rate, which can partially replace expensive titanium dioxide. It is especially suitable for high-speed doctor blade coaters. Calcined kaolin as a filler can also improve the writing and printing properties of the paper, and increase the paper. The evenness, smoothness and gloss of the paper can improve the opacity, air permeability, flexibility, printing and writing properties of the paper, and reduce the cost.
  2. Coating industry: The use of calcined kaolin in the coating industry can reduce the amount of titanium dioxide, make the coating film have good characteristics, and improve the processing, storage and application properties of the coating. The amount of calcined kaolin used in medium and high-grade coatings is 10-30%, and the calcined kaolin used is mainly 70-90% with -2um content
  3. Plastic industry: In engineering plastics and general plastics, the filling amount of calcined kaolin is 20-40%, which is used as filler and reinforcing agent. Calcined kaolin is used in PVC cables to improve the electrical properties of plastics.
  4. Rubber industry: The rubber industry uses a large amount of kaolin, and the filling ratio in rubber ranges from 15 to 20%. The calcined kaolin (including surface modification) can replace carbon black and white carbon black to produce light-colored rubber products, tires, etc. .

Packing: 25kg paper-plastic compound bag and 500kg and 1000kg ton bags.

Transportation: When loading and unloading, please load and unload lightly to prevent packaging pollution and damage. The product should be protected from rain and sunlight during transportation.

Storage: Store in a ventilated and dry place in batches. The stacking height of the product should not exceed 20 layers. It is strictly forbidden to contact the items that reflect the product, and pay attention to moisture.

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