Production of agent for desulfurizing crude iron and steel melts

Details Production of agent for desulfurizing crude iron and steel melts Production of agent for desulfurizing crude iron and steel melts

1980-05-14

1982-03-09

Schwartz, Richard A.

Compositions

Co, s, negative element, or acid, bindant containing

75 55, C01B 3132, C21C 102, C21C 7064

Patent

active

043188222

ABSTRACT:
The invention relates to the production of an agent for desulfurizing crude iron and steel melts, the desulfurizing agent being based on calcium carbide containing calcium oxide. To this end, a calcium carbide/calcium oxide/starting melt mixture with a CaO-content within the range 20 to 80 weight % is produced from lime and coke and allowed to solidify to a block. While the solidified block still has an average temperature of more than 400.degree. C., it is crushed to particulate material with a size of less than 150 mm. Next, the hot crushed material of at least 400.degree. C. is admixed with a quantity of calcium oxide necessary to have in the resulting mixture an overall content of CaO corresponding to that desired for the final product. The whole is thoroughly mixed and crushed with exclusion of moisture at temperatures higher than 100.degree. C. to particulate material with a size of less than 10 millimeters.

REFERENCES:
patent: 3473917 (1969-10-01), Michaelis
patent: 4115518 (1978-09-01), Delmon et al.

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