Process for comprehensively recycling electrolytic manganese residues and manganese tailings

Abstract

The invention discloses a process for comprehensively recycling electrolytic manganese residues and manganese tailings. The process for comprehensively recycling the electrolytic manganese residues and the manganese tailings specifically comprises the following steps that liquid-phase crushing is performed on the electrolytic manganese residues by adopting a dispersion machine so as to obtain leached residues and leachate; a qualified de-ironed precursor solution without solid particles is obtained through filter pressing, and hydration pulping is performed on the magnesium oxide through the dispersion machine. The process for comprehensively recycling the electrolytic manganese residues and the manganese tailings has the advantages that as long as the manganese content of the electrolyticmanganese residues and the manganese tailings is greater than 1%, the manganese can be enriched and recovered, so that a new profitable industrial way is developed for resource comprehensive recoveryof the manganese tailings, the problems that when electrolytic manganese is produced through a traditional process, pollution is caused due to the fact that sodium jarosite and goethite which are generated through purification iron removal cannot be recovered, the purity of the electrolytic manganese is low due to the fact that the leaching solution is not purely purified and the like are solved,and the process is simple, stable and strong in operability.

Description

technical field [0001] The invention relates to the technical field of new environmental protection technology, and specifically refers to a technology for comprehensively recycling electrolytic manganese slag and manganese tailings. Background technique [0002] In the production process of electrolytic manganese, 7-8 tons of manganese ore is consumed to produce 1 ton of electrolytic manganese metal, and 5-6 tons of electrolytic manganese slag is produced. At present, there are about 20 million tons of electrolytic manganese waste slag accumulated nationwide. If the available manganese content in electrolytic manganese slag is 1%-3%, the discarded or lost manganese resources are about 200,000-600,000 tons. If the beneficiation technology of manganese ore is not improved and the development and utilization of manganese tailings are strengthened, with the increase of the amount of manganese tailings, more and more environmental and ecological problems will be caused. The acc...

AI Technical Summary

Problems solved by technology

The first treatment method will produce a large amount of sulfuric acid slag. Due to the high content of impurities and no recycling value, these waste residues can only be discarded and stored, and occupy a large amount of land resources.

The second treatment method is complicated in process and high in recycling cost, so not all titanium dioxide manufacturers are qualified to apply it

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