Black talc is a general term for black and gray-black talc, and the inclusion of organic matter is the main cause of its blackening. The main mineral in black talc is talc, which is more than 92%, and contains about 5% of quartz and about 2% of organic matter.
As the ceramic industry continues to improve the quality of raw materials, the industry is also constantly exploring the selection of materials and processing technology. Because black talc contains various organic substances and possesses the properties that other talc does not have, it is widely used in China’s ceramic industry. Developed a variety of black talc deep processing products.
Although black talc is widely used in ceramics, rubber and other industries, it is less used in other fields due to its low whiteness. In order to expand the application of black talc, appropriate measures must be taken to improve the whiteness of black talc, and calcination is a more effective method.
At present, the main processing method for improving the whiteness of black talc is calcination and whitening. The purpose of calcination is mainly to remove the organic carbon contained in the black talc component, so that the whiteness reaches the industrial use requirement and expands its industrial application field. After the calcination process, the whiteness is as high as 95%. It has good properties of fire resistance, heat resistance, insulation, adhesion, adsorption and lubrication. It can be applied to paper, ceramics, plastics, paints, coatings, medicine, cosmetics, aerospace and machinery. , electronics, computers, architectural decoration and other fields.
For talc 80-600 mesh grinding, HD series raymond mill is a good choice, it has the advantages of high production, high qualification rate, low noise and vibration in grinding of 325-400 mesh. The specifications are as following:
Output size：80-600 mesh
Input size: ≤35mm
Capacity: 1-60 t/h
Application: Feldspar, calcite, limestone, talc, barite, rare earth, marble, phosphate ore, kaolin, bentonite, gypsum, Perlite diatomite, dolomite etc.
12th Nov 2018