INTRODUCTION

Graphite powder is a kind of mineral powder, mainly composed of simple carbon, soft, black gray; It is greasy and can contaminate the paper. The hardness is 1-2, and it can increase to 3-5 along the vertical direction with the increase of impurities. The specific gravity is 1.9~2.3. Under the condition of oxygen isolation, its melting point is above 3000 ℃, which is one of the most temperature resistant minerals. At room temperature, the chemical properties of graphite powder are relatively stable, and it is insoluble in water, dilute acid, dilute alkali and organic solvents; The material has high temperature resistance and conductivity, and can be used as refractory, conductive material, wear-resistant lubricating material.

PRODUCT APPLICATION

1. As refractory materials: graphite and its products have the properties of high temperature resistance and high strength, and are mainly used to make graphite crucibles in the metallurgical industry. In steelmaking, graphite is commonly used as the protective agent for steel ingots and the lining of metallurgical furnaces.

2. As conductive material: used in the electrical industry to manufacture the positive pole of electrode, brush, carbon rod, carbon tube, mercury positive current device, graphite gasket, telephone parts, coating of TV picture tube, etc.

3. As wear-resistant lubricating material: graphite is often used as a lubricant in the machinery industry. Lubricating oil can not be used under the conditions of high speed, high temperature and high pressure. Graphite wear-resistant materials can work without lubricating oil at high sliding speed at (I) 200~2000 ℃.

Many equipment transporting corrosive media widely use graphite materials to make piston cups, sealing rings and bearings, which do not need to add lubricating oil during operation. Graphite emulsion is also a good lubricant for many metal processing (wire drawing, tube drawing).