Metalurgija, Vol. 63 No. 2, 2024.
Prethodno priopćenje
Electrothermal co-production of ferrosilicon, calcium carbide and gaseous phosphorus from the chilisay phosphorite
V. M. Shevko
; Higher School of Chemical Engineering and Biotechnology, M.Auezov South Kazakhstan University, Shymkent, Kazakhstan
R. A. Uteyeva
; Higher School of Chemical Engineering and Biotechnology, M.Auezov South Kazakhstan University, Shymkent, Kazakhstan
*
A. D. Badikova
; Higher School of Chemical Engineering and Biotechnology, M.Auezov South Kazakhstan University, Shymkent, Kazakhstan
* Autor za dopisivanje.
Sažetak
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.
Ključne riječi
electrothermic process; phosphorite; ferrosilicon; calcium carbide; gaseous phosphorus
Hrčak ID:
312338
URI
Datum izdavanja:
1.4.2024.
Posjeta: 241 *