Combined Processing of Copper-Smelting Slags for the Manufacture of Valuable Products

Technological techniques are proposed to process copper-smelting slags to perform zinc recovery and selective solid-phase iron reduction in tube furnaces under laboratory conditions and to melt the reduction products in arc steelmaking furnaces to form cast iron, ferrosilicium, or building steel. Cast iron milling media, building steel bars, ceramic proppants for the oil industry, and sand for concrete production are fabricated and their properties are studied. A technological scheme is developed for combined processing of slags and a set of commercial equipment is chosen. The economic efficiency of the process of production is estimated.