White flake crystal powder, a sense of greasy, earthy style.
Relative density: two.58. PH price (20% h2o suspension) 3.eight ~ seven.five.
Mohs hardness: 2.
Oil absorption fee: forty% ~ 50%.
Common particle size: .five to 1 micron.
MaXiHu (West Lake) Dis.mum cost-free h2o: one.%.
Calcined kaolin is characterised by large whiteness, modest bulk density, large particular surface area spot and pore quantity, very good oil absorption, covering and abrasion resistance, substantial insulation and thermal steadiness.
one, chemical stability, kaolin has excellent acid solubility.
two. Cation exchange ability. The cation trade capability of kaolin refers to the complete amount of cations exchanged by kaolin unEPTthe PH value of seven, incXiHu (West Lake) Dis.Hu (West Lake) Dis. exchangeable foundation and exchangeable hydrogen, with the device of mmol/g, that is, the cation exchange ability exchanged per 1g dry sample is EPTly .03-.05mmol/g.
three. Refractoriness: kaolin is chemically composed of Al2O3 and SiO2, so it has outstanding fireplace resistance with a refractoriness of 1770-1790 ordmC.
physical :
Whiteness (% 94 deg plusmn1
Particle size (-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-fifty four forty four-forty six lt0.35 lt0.5 lt0.two
Mgo(%) K2O(%) Ha2O(%) MnO(%)
lt0.2 lt0.05 lt0.1 lt0.004

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