Production method for simultaneously conducting mixed leaching and iron removal of cobalt concentrate and cobalt intermediate product

Abstract

The invention discloses a production method for simultaneously conducting mixed leaching and iron removal of a cobalt concentrate and a cobalt intermediate product. The production method includes thefollowing steps that firstly, the cobalt concentrate and the cobalt intermediate product are crushed and made into ore pulp; secondly, sulfuric acid and a reducing agent are successively added to thecobalt concentrate ore pulp for leaching, heating and iron removing to obtain seriflux, and thirdly, the cobalt intermediate ore pulp is added into the seriflux of the second step for solid-liquid separation. According to the production method for simultaneously conducting mixed leaching and iron removal of the cobalt concentrate and the cobalt intermediate product, when finishing simultaneous conducting of the process of reduction leaching and oxidation iron removal, pH in the iron removal process is adjusted by the cobalt intermediate product instead of alkali liquor (usually anhydrous sodium carbonate), the production cost is saved, and the main taste content in cobalt liquor, the metal recovery rate and the production efficiency are greatly improved.

Description

technical field [0001] The invention belongs to the field of chemical industry, in particular to a production method of cobalt concentrate and cobalt intermediate product mixed leaching and iron removal simultaneously, and belongs to the field of chemical industry. Background technique [0002] The leaching of existing cobalt concentrates generally adopts a two-stage leaching method. First, metal cobalt is leached from the ore into the solution with a reducing agent, and then an oxidizing agent is added to oxidize ferrous iron. The pH of the solution is adjusted by using sodium carbonate, and finally reaches For the purpose of removing iron, the solution that meets the quality requirements is sent for extraction. This method consumes a lot of auxiliary materials during the leaching process of cobalt ore, and the metal recovery rate is not high. Its main disadvantages are long process flow, low main taste of cobalt liquid, poor filtration performance, long time consumption, l...

AI Technical Summary

Problems solved by technology

[0002] The leaching of existing cobalt concentrates generally adopts a two-stage leaching method. First, metal cobalt is leached from the ore into the solution with a reducing agent, and then an oxidizing agent is added to oxidize ferrous iron. The pH of the solution is adjusted by using sodium carbonate, and finally reaches For the purpose of iron removal, the solution that meets the quality requirements is sent to extraction. This method consumes a lot of auxiliary materials during the leaching process of cobalt ore, and the metal recovery rate is not high.

Its main disadvantages are long process flow, low main taste of cobalt liquid, poor filtration performance, long time consumption, low efficiency and high cost

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