Kaolin Processing
Kaolin Processing
In the kaolin mining process, crushing is the first step. Using the crushing plant, we get kaolin particle, then using the grinding plant with one type of kaolin mill, we get kaolin powder.
Kaolin is a clay mineral It is a stacked up silicate layer with one tetrahedral sheet linked through oxygen to a single octahedral sheet of Alumina. Rocks that are prosperous in Kaolin contents are normally termed as china clay or kaolin.
Kaolin clay is formed from the weathering of silica rich rocks such as granite and gneiss, it occurs with feldspar and quartz. The clay is separated from the other constituents by washing with water cannons and the slurry is then centrifuged to remove 75% of the minus 0.002mm fraction.
Clay is also processed to remove any contaminating materials such as iron, aluminium quartz and feldspar. It is dried and fired to produce molochite and then fed into a ball mill. Various product gradations can be produced.
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