METHOD OF PYROMETALLURGICAL PROCESSING OF MINERAL RAW Russian patent published in 1997 - IPC

FIELD: pyrometallurgy. SUBSTANCE: method of pyrometallurgical processing of mineral raw to produce useful components includes loading disintegrated raw material into reaction zone of high-temperature furnace together with oxidative gas through delivery end of jet disposed in liquid mass or immediately above it. Oxidation products are subjected to sulphadizing or reduction in bath in the second reaction zone contacting with the first one and being in the form of deepening in liquid mass. As starting material, sulfide ore or sulfide concentrate are used and also metal oxides or their mixture. Average particle size of disintegrated raw material does not exceed 100 mcm. As oxidative gas, oxygen, oxygen-rich air or ordinary air can be used. Starting liquid mass contains slag phase and matte phase, the second reaction zone being formed in the slag phase. EFFECT: enhanced efficiency of process. 9 cl, 2 dwg