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- Title
ELECTROTHERMAL CO-PRODUCTION OF FERROSILICON, CALCIUM CARBIDE AND GASEOUS PHOSPHORUS FROM THE CHILISAY PHOSPHORITE.
- Authors
SHEVKO, V. M.; UTEYEVA, R. A.; BADIKOVA, A. D.
- Abstract
The article presents the results of studies on the use of the high-silicon phosphorites (51,8 % of Ca3(PO4)2, 25,6 % of SiO2) for the co-production of ferrosilicon, calcium carbide and gaseous phosphorus. The studies included the electric smelting a charge in an arc furnace and using the second-order rotatable designs. The conditions of producing FeSi45 ferrosilicon (51,2-54,2 % of coke, 12,5-18,4 % of steel shavings) and FeSi25 ferrosilicon (53-58 % of coke, 39,7- 40 % of steel shavings) with extraction of 65-67,8 % of silicon into the alloy were determined. The second product of the process is technical calcium carbide with a capacity of 129-167 l/kg, in which from 44,8 to 64,1 % of calcium is extracted. At least 99,3 % of phosphorus during the electric smelting is sublimated.
- Subjects
CALCIUM carbide; SILICON alloys; PHOSPHATE rock; FERROSILICON; ELECTRIC charge; ARC furnaces; COKE (Coal product)
- Publication
Metalurgija, 2024, Vol 63, Issue 2, p271
- ISSN
0543-5846
- Publication type
Article