A Ferro-alloy, Calcium Carbide and Zinc Sublimates, Production from the Achisay Deposit Ore (Complex tests)

Abstract

The present article contains the research results of electrosmelting the Achisay zinc oxide ore with extraction of silicon, calcium, iron, zinc and lead in a commodity output. It is found, that in a system of the Achisa yore -carbon the calcium carbide formation begins at 1800 °C, silicon and iron silicides -at 1500 °C. Zinc completely passes in a gas phase at 1800 °C, lead at 2300 °C. At the electro smelting the Achisa yore (10. 1% of Zn, 0. 4% of Pb, 17. 1% of Fe, 12. 0% of Ca, 2. 7% of Si) in the presence of coke and quartzite the ferro-alloy with the Si content of 25,7-27,1% and the calcium carbide with capacity of 228 l/kg have been obtained. The calcium carbide capacity increases to 275 l/kg at the addition of lime in the charge (in this case the sublimates contain 44,34% of Zn). The suggested method of the zinc oxide ore processing allows to increase a level of complex processing the ore in 2.53 times.