Nickel-containing high-cobalt sulfide leaching technology

Abstract

The invention relates to a nickel-containing high-cobalt sulfide leaching technology. A leaching liquor rich in metal cobalt obtained through atmospheric pressure preheating and pressure leaching can directly enter a cobalt production system. The technology comprises the following technical steps of: (1) slurrying minerals in 10-20 g / l dilute acid solution, controlling the ratio of dilute acid volume to material mass at 6:1, and controlling slurrying temperature at 40-50 DEG C, slurrying time at 2-3 h and the concentration of slurrying end point acid at 5-15 g / l; (2) controlling the temperature of atmospheric pressure preheating at 80-85 DEG C; (3) controlling pressure leaching, controlling the ratio of dilute acid volume to material mass at 6:1, reaction temperature at 145-165 DEG C, andleaching partial pressure oxygen at 0.20-0.25 Mpa and reaction time at 6-8 h. In the invention, a nickel and cobalt sulfate solution containing more than 50 g / l cobalt is obtained, i.e. more than 98%of Ni and Co in the nickel-containing high-cobalt sulfide material is leached out to enter the solution.

Description

technical field [0001] The invention relates to a metallurgical technology for treating nickel-containing and high-cobalt sulfide materials. Background technique [0002] The main chemical composition of the material containing nickel and high cobalt is Ni, Co, Cu, S, etc. (see Table 1 for details), and has the characteristics of high content of Co and S. Methods such as soaking all have the problems of low direct metal recovery rate, high processing cost and poor operating environment. [0003] Table 1 Composition (%) of nickel-containing high-cobalt sulfide materials. [0004] element Ni Cu Fe co S NH 4 + content 29.8 0.41 0.23 20.7 27.6 0.99 Contents of the invention [0005] The purpose of the present invention is to adopt conventional method to deal with the deficiency that nickel-containing high-cobalt sulfide exists, provide a kind of new leaching metallurgical process of processing nickel-containing high-cobalt sulfide materi...

AI Technical Summary

Problems solved by technology

[0002] The main chemical composition of the material containing nickel and high cobalt is Ni, Co, Cu, S, etc. (see Table 1 for details), and has the characteristics of high content of Co and S. There are problems such as low metal recovery rate, high processing cost and poor operating environment in the treatment of immersion and other methods.

Images