The wide use silicon carbide
Silicon carbide (SiC) , which is using quartz sand and petroleum coke or coal tar, wood chips (green silicon carbide production need to add salt) such as raw material through high temperature electric resistance furnace smelting. There is also a rare mineral silicon carbide in nature, and the Mo Sang Shi. Silicon carbide is also called the moissanite. In contemporary C, N, B the oxide refractory raw materials in the high technology, such as silicon carbide as the most widely used, one of the most economic, can be called corundum or refractory sand. At present Chinese industrial production of silicon carbide is divided into black silicon carbide and green silicon carbide, both are the six-party crystal, silicon carbide specific gravity is 3.20 ~ 3.20, and the silicon carbide microhardness is 2840 ~ 3320 kg/was. Silicon carbide mainly has four major application fields, functional ceramics, refractories, abrasives, metallurgical raw materials. Silicon carbide raw material can supply splendid, so it can't calculate high-tech products, and the application of high technology content of nano-sized silicon carbide powder short time can't form scale economy.
In addition, silicon carbide or famous "three resistant" material
Silicon carbide has corrosion resistance, high temperature resistance, strength, good thermal conductivity and impact resistance and other properties, silicon carbide on the one hand, can be used for all kinds of smelting furnace lining, high temperature furnaces artifacts, silicon carbide plate, plate, supports, sagger, silicon carbide crucible, etc. On the other hand can be used in non-ferrous metal smelting industry of high-temperature indirect heating, such as vertical distillation furnace, furnace distillation tray, aluminium electrolyzer, copper melting furnace lining, furnace zinc powder with arc plate, the thermocouple protection tube. ,etc. Used to produce wear-resisting, corrosion resistant, high temperature resistance and other advanced silicon carbide ceramic materials; Can also make the rocket nozzle, gas turbine blades, etc. In addition, silicon carbide and highway, aviation airport runway solar water heater, etc. One of the ideal material.