LINE FOR REPROCESSING OF METAL-BEARING RAW MATERIAL OF GOLD-CONTAINING ORES AND SANDS Russian patent published in 2002 - IPC

FIELD: gold-containing ore and sand concentration equipment. SUBSTANCE: line has prepreparing module, gravitational concentration module, flotation concentration module, and flotation concentrate finishing module, said modules being arranged in succession according to the course of process. Flotation concentrate finishing module has classifying apparatus, device for catching useful component from material discharged from classifying apparatus, device for catching useful component from sand discharged from classifying apparatus, and grinding apparatus arranged in front of classifying apparatus. Device for catching useful component from material discharged from classifying apparatus has complex of magnetic and electric separators, namely, low-strength magnetic separator, high-gradient electromagnetic separator, and high-strength magnetic separator. Finishing module has material drying device, electrostatic separator and amalgam steaming device, which are arranged in succession downstream of high-strength magnetic separator. Employment of combined concentration pattern, including magnetic and electric methods, in flotation concentrate finishing module allows high-toxic mercury-containing products to be utilized and gold extraction extent to be increased. EFFECT: increased efficiency and improved ecological safety and quality of concentrates for hydraulic metallurgical conversion. 1 dwg