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How is ferrosilicon nitride synthesized?

Ferrosilicon nitride is often used as a raw material for taphole mud in blast furnace smelting. When using taphole mud, it significantly improves the plugging performance of taphole mud and meets the needs of blast furnace tapping. In addition, ferrosilicon nitride is also used in some refractory materials. As the quality of materials improves, the status of ferrosilicon nitride gradually increases. Let us follow the editor to see how ferrosilicon nitride is synthesized.

There are two main methods of synthesizing ferrosilicon nitride. One is a new synthesis method of ferrosilicon nitride, which is the flash combustion synthesis method.

Although silicon nitride and ferrosilicon nitride should be a wide range of high-temperature materials in the market, ferrosilicon nitride is mostly prepared by direct nitriding, carbothermal primary nitriding, vapor deposition, and thermal decomposition. wait. The new process of flash combustion synthesis of ferrosilicon nitride can continuously synthesize silicon nitride and ferrosilicon nitride on a large scale and at low cost under normal pressure.

During the production process, ferrosilicon fine powder and ferrosilicon nitride are mixed and continuously measured into a continuous reactor preheated at 1200°C, and nitrogen gas is introduced at the same time. Silicon nitride powder and ferrous silicon nitride are evenly dispersed, float and fall in hot nitrogen, fully contact with hot nitrogen, and are rapidly heated, and a combustion synthesis reaction occurs rapidly with nitrogen in the combustion reaction zone. The reaction itself generates a large amount of heat, which can maintain the continuity of flash combustion synthesis.

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