KAOLIN
KAOLIN
Kaolin (China Clay) is nearly White in colour derived from mineral Kaolinite.
Chemical Formula is composed from clusters of Al2O3.2H2O.2H2O
Specific Gravity 2,6
Aspect Ratio (Average) 8/1 – 100/1 – 20/1
Refractive Index 1,56
MOHS Hardness 2,5
Solubility in Water NO
Inert Against Acids
Natural Kaolins also classified in two main groups, primary and secondary as a raw material.
Primary kaolins are found naturally where they exist.
Secondary Kaolins are washed and deposited away from primary kaolins. Lower impurities and high brightness are main parameters to differentiate secondary kaolins from primary kaolins. Selected and washed secondary kaolins are used to produce hydrous kaolins on industrial scale.
PERO Kaolin grades classified into four main groups.
BALL KAOLINS (CLAY)
- PRIMA KAOLIN 3
- PRIMA KAOLIN 3SX
- PRIMA KAOLIN 5
- PRIMA KAOLIN 5SX
- PRIMA KAOLIN 20
- PRIMA KAOLIN 20SX
HYDROUS KAOLIN
- PRIMAKAOLIN HG 90
- PRIMAKAOLIN HG 80
- PRIMA KAOLIN HG 70
META KAOLIN
- PRIMA MT KAOLIN
- PRIMA KAOLIN META
CALCINED KAOLIN
- PRIMA KAOLIN CK 70/90
- PRIMA KAOLIN CK 80/95
