COPPER LEACHING AND CONCENTRATION Part 3

Description

Water is sprayed on old copper mine workings to dissolve copper from rock that could not be mined at a profit. The resulting copper-sulphate solution is collected underground and pumped to the surface, where the copper is precipitated to tanks containing scrap iron. Shows processes of concentrating low-grade ore produced in open-pit mining, including crushing, screening, grinding in ball mills, separation by flotation, recovery of water, disposal of tailings, collection of concentrates on suction filters, and shipment to the smelter.

Collection

Records of the U.S. Bureau of Mines

Series

Public Information Films and Video Recordings