Kaolin

KAOLIN CLAY

Kaolin is a mineral that took millions of years to form from the breakdown of granite rocks, and it contains hydrated aluminum silicate. It has a wide range of applications, including ceramics, paper, paints and coatings, fiberglass, plastics, rubber, cosmetics, concrete, etc.

• Chemical composition: It is composed mainly of the mineral kaolinite, which is a hydrous aluminum silicate with the chemical formula Al2Si2O5(OH)4.
• Formation: forms through the weathering and decomposition of feldspar-rich rocks like granite and gneiss. The chemical and physical breakdown of these rocks leaves behind kaolin deposits.
• Uses: Many industrial and commercial applications. Therefore, it is widely used in the manufacture of paper, paint, rubber, plastics, wire insulation and more. As a pigment, it provides whiteness and opacity. In ceramics and pottery, it is important for its high fire resistance.
• Physical properties: Kaolin appears as a fine white powder or clay. So, it is fairly soft with a low melting point. When heated, it loss water molecules but does not vitrify like other clays. So, this gives it unique thermal qualities.

TECHMICOM supplies a range of kaolin products with lots of benefits, including:

• Retaining high whiteness and good plasticity after calcination.
• Remaining chemical inertness over a relatively wide pH range.
• Offering excellent covering with finely controlled particle sizes, low viscosity, non-abrasiveness, and smooth surface finish.
• Efficient productivity and cost savings.