China Clay, also known as Kaolin, is one of the finest clays, consisting primarily of the mineral kaolinite and typically generated when granite undergoes hydrothermal metamorphism. Kaolinite is a clay mineral that belongs to the industrial minerals group and has the chemical formula Al2Si2O5(OH)4. It's a stratified silicate mineral made up with one sublattice of silica (SiO4) and one octahedral sheet of alumina (AlO6) octahedra connected by oxygen molecules.
Kaolinite has a modest shrink–swell potential (1–15 meq/100 g) as well as a moderate cation-exchange potential. It's a mushy, muddy, generally white aggregate (dioctahedral phyllosilicate clay) formed by the chemical weathering of aluminium silicate minerals such as feldspar. Iron oxide colours it pink-orange-red in various areas worldwide, offering it a characteristic rust tint. White, yellow, or pale orange colours result from lower amounts. Kaolin is provided and shipped as a powder form, semi-dry vermicelli, or fluid slush in industrial levels.
| China Clay Lumps | ||||
|---|---|---|---|---|
| Physical Analysis Report of N-1 | Chemical Analysis Report of N-1 | |||
| –44 µm | 99.40% | Sio2 | 50.50 | |
| –20 µm | 99.48% | Al2O3 | 32.01 | |
| –10 µm | 98.15% | TiO2 | 1.61 | |
| –5 µm | 95.99% | Fe2O3 | 1.23 | |
| –2 µm | 90.00% | CaO | 1.11 | |
| –1 µm | 79.94% | MgO | 1.28 | |
| –0.5 µm | 69.88% | K2O | 0.42 | |
| Na2O | 0.10 | |||
| LOI | 12.50 | |||
| M.0.R | Dry M.O.R. | 633.59 PSI (44.62Kg/Cm2) |
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