Ferrosilicon Nitride Has Been Widely

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Ferrosilicon nitride has been widely used in blast furnace blast mud in developed countries, which has improved the plugging performance of blast mud significantly, met the needs of blast furnace iron production, and become an indispensable component of modern blast furnace blast mud. In addition, adding a small amount of ferrosilicon nitride to the iron gully can greatly increase the iron content of the iron gully. Japan began using ferrosilicon nitride in the 1970s [1].

The application time of ferrosilicon nitride in China is relatively short, Baosteel first added silicon nitride to the pellet mud in 1994, which improved the performance of the pellet mud to meet the needs of Baosteel iron making. Other domestic steel mills are basically using ferrosilicon nitride, because the sales price of ferrosilicon nitride is about half of the sales price of silicon nitride, and the two are basically close in terms of performance.

In the past three years, the national key large iron and steel enterprises over 2000M3 blast furnace plug mud basically use ferrosilicon nitride. The addition of iron silicon nitride slurry can well meet the needs of large blast furnaces, so that the blast furnace iron production times are generally reduced from 18 times to 12 times, and the lowest is reduced to 6 times. The consumption of gun-mud was reduced from 1.2kg/ ton iron to 0.5kg/ ton iron.

Silicon carbide is by the American Acheson in 1891 electromelting diamond experiment, a carbide accidentally found in the laboratory, was mistaken for a mixture of diamond, so named emery, in 1893 Acheson research out of the industrial smelting silicon carbide method, that is, we often say Acheson furnace, has been used so far, with carbon materials as the core of the resistance furnace, A mixture of silica SiO2 and carbon is electrically heated to produce silicon carbide

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