Processing process of smelting of silicon carbide

Abstract

The invention discloses a processing process of smelting of silicon carbide. The processing process specifically comprises the following steps: 1) collection of materials; 2) crushing; 3) drying; 4) mixing of the materials; 5) furnace loading; 6) smelting; 7) cooling; 8) waste gas treatment. The processing process is scientific and reasonable and is convenient to operate; waste gas generated in asmelting process of the silicon carbide is cooled, so that the heat of the waste gas is recycled; in addition, hot water generated in a cooling process is used for drying, so that the energy is saved,and the production cost is lowered; further, the cooled gas is filtrated, de-dusted and purified by a waste gas treatment device, so that the gas generated in the smelting process of the silicon carbide is prevented from entering atmosphere directly and causing environmental pollution, the contamination factor of the waste gas is decreased, and the effects of energy conservation and environment protection are achieved; according to the technological process, the density and the quality of a silicon carbide product are effectively improved, the production cost is low, resources are saved, andthe effects of energy conservation and environmental protection are relatively good.

Description

technical field [0001] The invention relates to the technical field of silicon carbide, in particular to a processing technology for smelting silicon carbide. Background technique [0002] Emery, also known as silicon carbide, is made of quartz sand, petroleum coke (or coal coke), wood chips (salt needs to be added when producing green silicon carbide) and other raw materials through resistance furnace high temperature smelting. Silicon carbide also has rare minerals in nature. Moissanite, silicon carbide, also known as moissanite, among the non-oxide high-tech refractory materials such as C, N, and B, silicon carbide is the most widely used and economical one, which can be called emery or refractory sand At present, the silicon carbide produced in China's industry is divided into two types: black silicon carbide and green silicon carbide. Due to its stable chemical properties, high thermal conductivity, small thermal expansion coefficient, and good wear resistance, it has a...

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Problems solved by technology

[0004] The object of the present invention is to provide a silicon carbide smelting processing technology to solve the problem that the silicon carbide smelting process proposed in the background art is complicated in operation, poor in smelting accuracy, and the gas generated during the smelting process is directly discharged into the atmosphere, which not only causes environmental pollution Pollution, at the same time, it cannot realize the recovery and utilization of its heat, realize the waste of resources, the effect of energy saving and environmental protection is poor, and it does not meet the requirements of sustainable development of society

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