Talc Powder
Introduction
Talc is a mineral, produced by the mining of talc rocks and then processed by crushing, drying and milling. Processing eliminates a number of trace minerals from the talc, but does not separate minute fibers which are very similar to asbestos. Talc powder has properties of lubricity, viscous resistance, flowing boosting, fire resistance, acidoresistance, insulativity, high melting point, inactive der chemismus, good covering power, soft, good shining, good adsorptivity. It can be used in industries of food, rubber, painting, ceramics, cosmetic, pharmaceutical, paper-making, etc.
Application
Talc is widely used in the ceramics industry in both bodies and glazes. In low-fire artware bodies it imparts whiteness and increases thermal expansion to resist crazing. In stonewares, small percentages of talc are used to flux the body and therefore improve strength and vitrification. It is a source of MgO flux in high temperature glazes (to control melting temperature). It is also employed as a matting agent in earthenware glazes and can be used to produce magnesia mattes at high temperatures.
Specification
Specification | Super | High | Standard |
whiteness ≥(%) | 90 | 88 | 76 |
(Calcine whiteness)≥(%) | 91 | 90 | 88 |
(SiO2)≥(%) | 61 | 60 | 57 |
(MgO)≥(%) | 30 | 30 | 30 |
(Al2O3)≤(%) | 0.5 | 0.6 | 0.8 |
(CaO)≤(%) | 0.5 | 0.5 | 0.5 |
(Fe2O3)≤(%) | 0.3 | 0.4 | 0.5 |
Loi≤(%) | 6 | 7 | 10 |
Passing through | 45(um)99% | 45(um)98% | 45(um)98% |
Packing: 25kg/bag with inner liner or according as your request
Size: 325mesh,400mesh,600mesh,800mesh,1000mesh,3000mesh,6000mesh
