Silicon Carbide 98.5

Silicon carbide (SiC) has become an important abrasive because of its great hardness, but its application range exceeds that of ordinary abrasives. For example, its high temperature resistance and thermal conductivity make it one of the preferred kiln furniture materials for tunnel kilns or shuttle kilns. Its electrical conductivity makes it an important electric heating element. The preparation of SiC products first requires the preparation of SiC smelting blocks [or called: SiC pellets, because they contain C and are super-hard, so SiC pellets were once called: emery. But pay attention: it has a different composition from natural emery (also known as: garnet). In industrial production, SiC smelting blocks usually use quartz, petroleum coke, etc. as raw materials, auxiliary recovery materials, waste materials, and are prepared through grinding and other processes to form a charge with a reasonable ratio and a suitable particle size (in order to adjust the permeability of the charge, an appropriate amount needs to be added Wood chips, the preparation of green silicon carbide must also add an appropriate amount of salt) prepared by high temperature. The thermal equipment for high-temperature preparation of SiC smelting blocks is a special silicon carbide electric furnace. Its structure consists of the bottom of the furnace, the end wall with electrodes on the inside, the detachable side wall, and the core body (full name: the energized heating body in the center of the electric furnace, generally Use graphite powder or petroleum coke to install in the center of the charge according to a certain shape and size, generally round or rectangular.

Specification :

Application range

Silicon carbide has four main application areas, namely: functional ceramics, advanced refractory materials, abrasives and metallurgical raw materials. Coarse silicon carbide materials can already be supplied in large quantities and cannot be regarded as high-tech products, and the application of nano-scale silicon carbide powders with extremely high technical content cannot form economies of scale in a short time.