Leaching method for associated copper, molybdenum and nickel in coal mine containing scherbinaite

Abstract

The invention discloses a leaching method for associated copper, molybdenum and nickel in a coal mine containing scherbinaite. The method is characterized by comprising the steps of crushing the coal mine containing scherbinaite, grinding the coal mine to the required granularity in a wet way, adjusting the mine slurry concentration, then putting the mine slurry into a floatation tank, adding industrial sodium sulfide and ammonium aerofloat butyl into the floatation tank to be stirred, carrying out the floatation to obtain rough floatation concentrate, adding industrial sulphuric acid and sodium chlorate into the rough floatation concentrate, leaching the rough floatation concentrate added with the industrial sulphuric acid and the sodium chlorate at the temperature of 80 DEG C to 95 DEG C for 18-24 hours, carrying out the solid and liquid separation and the washing on the mine slurry after the leaching to obtain a leaching agent containing the copper, the molybdenum and the nickel. The leaching method disclosed by the invention has the following beneficial effects that: (1) the gross of the materials in the leaching process is reduced by utilizing the floatation method to enrich the copper, the molybdenum and the nickel in the coal mine containing scherbinaite; (2) in the wet acid leaching process, the leaching of the copper, the molybdenum and the nickel can be realized at the same time, and the high leaching rates of the copper, the molybdenum and the nickel can be ensured by adding a small amount of oxidant; and the leaching rates of the coal mine containing scherbinaite can respectively reach 60%-70%, 75%-85% and 75%-85%; and (3) the leaching method can favorably realize the comprehensive recycle and utilization of the copper, the molybdenum and the nickel in the coal mine containing scherbinaite.

Description

technical field [0001] The invention relates to a method for leaching associated metal molybdenum, copper and nickel in vanadium-containing stone coal mines. Background technique [0002] Vanadium-bearing stone coal mine is an important vanadium-containing resource mined and utilized as an independent vanadium deposit in my country. V in stone coal 2 o 5 The grade is low, generally only about 1.0%. my country's traditional vanadium extraction from stone coal uses sodium salt roasting and leaching process. The main disadvantages of this process are low vanadium leaching rate, large waste of resources, and serious environmental pollution. Since the 1990s, wet acid leaching process has gained It is worth noting that many enterprises use wet acid leaching process for vanadium leaching and vanadium product preparation, avoiding air pollution caused by traditional processes. Over the years, there have been few studies on the comprehensive utilization of vanadium-containing stone...

AI Technical Summary

Problems solved by technology

my country's traditional vanadium extraction from stone coal uses sodium salt roasting and leaching process. The main disadvantages of this process are low vanadium leaching rate, large waste of resources, and serious environmental pollution. Since the 1990s, wet acid leaching process has gained Pay attention, many companies use wet acid leaching process for leaching of vanadium and preparation of vanadium products, avoiding the air pollution of traditional processes

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