Method for removing magnesium via cycle of ethanol in electrolytic manganese machining process

Abstract

The invention discloses a method for removing magnesium via cycle of ethanol in an electrolytic manganese machining process, which is characterized by comprising the following steps: adding 80-125g / l of absolute ethanol in anolyte of electrolytic manganese, stirring and adjusting the temperature within 35-55DEG C to ensure that the magnesium sulfate in the anolyte is largely salted out and precipitated; carrying out filtration and impurity removal in the anolyte so as to remove the saturated magnesium sulfate precipitate in the anolyte; and distilling the filtered solution to distill and separate the ethanol so as to realize the recovery and the recycle of the ethanol. Compared with the prior art, the method for removing magnesium via cycle of the invention adopts a process for processingmagnesium sulfate via cycle of ethanol so that the magnesium sulfate can be effectively removed, the precipitation phenomenon of magnesium sulfate crystallization in the production process is eliminated, the electrolytic operation is simpler and easier, the electrolytic environment is improved, the current efficiency is increased, the product quality is improved, the magnesium sulfate is effectively prevented from gradually accumulating in the electrolyte to gradually increase the concentration, the viscosity and the density are reduced, the ions in the electrolyte are normally diffused, the cell voltage is reduced and the like.

Description

Technical field [0001] The invention involves a method of removing impurities in an electrolytic manganese processing process and solving the problem of electrolytic manganese solution crystal blocking the problem. [0002] Background technique [0003] In the existing electrolytic manganese processing process, the calcium and magnesium contained in manganese ore are also dissolved by sulfate and produced calcium sulfate and magnesium sulfate in the immersion project.Calcium sulfate solubility is small, and most of them are removed during filtration. The content in the anode liquid (electrolyte) is generally low and can meet the requirements; while the highly soluble magnesium sulfate is gradually accumulated in the electrolyte to gradually increase its concentration gradually increasedLarge, the viscosity and density of the electrolyte increased, and the conductive rate decreased, causing the diffusion of ions in the electrolyte to hinder, the groove voltage rises, the electrici...

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Problems solved by technology

[0004] The present invention aims at the gradual accumulation of magnesium sulfate in the electrolytic solution so that its concentration gradually increases, so that the viscosity and density of the electrolytic solution increase, the conductivity decreases, and the ion diffusion in the electrolytic solution is hindered, the cell voltage rises, and the manganese dioxide The electrowinning process cannot be carried out uniformly and other disadvantages, and the method for removing magnesium sulfate in the electrolyte in the prior art is complex in process and cannot meet the needs of electrolytic manganese processing. A method for removing magnesium by ethanol circulation in the electrolytic manganese processing technology is provided

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