Wet process sulfide mineral leaching-out method

Abstract

A process for leaching sulfide ore by full-wet method includes such steps as mixing the sulfide ore with additive, adding water, reacting at 10-150 deg.C while controlling the final pH to 0-14, and oxidizing by adding oxidizing agent. Said ore is the sulfuride of Cu, Ni, Co, or Zn. Said additive is the water-soluble compound of Cu, Pb, and Co, etc. Said oxidizing agent may be air O2, H2O2, etc. Its advantage is high leaching speed.

Description

technical field [0001] The invention belongs to the technical field of sulfide ore hydrometallurgy, and in particular provides a full wet leaching method of sulfide ore. Background technique [0002] At present, the hydrometallurgy of sulfide ores includes wet method, full wet method, heap leaching and bioleaching methods. The full wet method includes pressure leaching, catalytic leaching, etc. Due to the roasting process involved in the traditional wet process, there is a large amount of SO 2 Gas generation requires SO 2 The recovery device makes the whole process a large investment and complicated process. Pressure leaching, catalytic leaching, heap leaching and biological leaching have been paid attention to at home and abroad because of eliminating the pollution of sulfur dioxide and improving the environment, among which pressure leaching is particularly attractive. The existing pressure leaching method was born and developed in the 1950s. In 1954, the Canadian Sher...

AI Technical Summary

Problems solved by technology

However, the vast majority of micro-batteries located inside the mineral are in a closed state under normal conditions (such as pressurized heating, catalysis, etc.), so they do not work; Some defects, such as too much resistance in the loop, etc., also have little effect