Wollastonite Ore Products.... Fibers, Powders Etc.

THE RAW WOLLASTONITE ORE

The physical and chemical index (It has been checked by Shanghai Institute of Ceramics.)The ore of their diggings belong to triclinic wollastonite with the acicular, stringy aggregation. The fine grinding finish ore still assume acicular stringy crystal. It shines white. The luster likes glass and pearl. The character of our ore is as follows: Moh's hardness----4.5degree, density---2.8~2.9, refraction index---1.616~1.631, melting point----1480C, Ignition loss:1-5%,whiteness: 85-90.The oil absorption is 26% in pulverous fettle.

The main chemical components:

CaSiO4 65~95% SiO2 40~52% CaO 38~48% Fe2O3,0.2~0.4%

Al2O3 0.1~0.5% LgLoss 0.5~5%

Micro-MnO2 K2O Na2o TiO2 S P B Cr Ni Cu Zn As Sr Ba Pb Bi

SHANGHAI INSTITUTE OF CERAMICS CHINESE ACADEMY OF SCIENCES