White flake crystal powder, a feeling of greasy, earthy taste.
Relative density: 2.fifty eight. PH worth (20% drinking water suspension) three.8 ~ seven.5.
Mohs hardness: 2.
Oil absorption rate: 40% ~ 50%.
Common particle dimension: .five to one micron.
MaXiHu (West Lake) Dis.mum cost-free water: 1.%.
Calcined kaolin is characterized by high whiteness, little bulk density, big certain surface location and pore quantity, great oil absorption, covering and abrasion resistance, large insulation and thermal stability.
one, chemical stability, kaolin has excellent acid solubility.
two. Cation trade ability. The cation trade potential of kaolin refers to the overall amount of cations exchanged by kaolin unEPTthe PH value of 7, incXiHu (West Lake) Dis.Hu (West Lake) Dis. exchangeable foundation and exchangeable hydrogen, with the device of mmol/g, that is, the cation trade capability exchanged per 1g dry sample is EPTly .03-.05mmol/g.
three. Refractoriness: kaolin is chemically composed of Al2O3 and SiO2, so it has exceptional fireplace resistance with a refractoriness of 1770-1790 ordmC.
physical :
Whiteness (% ninety four deg plusmn1
Particle dimensions (-10um,%) ge95%
325 mesh residue (%) le0.003%
Oil absorption valu ge62%
PH six.5-7.five
Moisture le0.five%
chemical :
SiC2(%) AL2O3(%) Fe2O3(%) TiO2(%) CaO(%)
52-54 forty four-forty six lt0.35 lt0.5 lt0.two
Mgo(%) K2O(%) Ha2O(%) MnO(%)
lt0.two lt0.05 lt0.1 lt0.004
Utilised in coating, paper, plastic, rubber, chemical, medication, environmental protection, advanced refractory and other fields
