Manufacturing process for producing synthetic reducing agent by using waste slag of electrolytic manganese and application of synthetic reducing agent

Abstract

The invention relates to a manufacturing process for producing a synthetic reducing agent by using waste slag of electrolytic manganese and application of the synthetic reducing agent. The manufacturing process comprises the following steps of: adding manganese slag into mixed liquid of sulfuric acid and lixivium and performing pressure filtration after a reaction is finished to obtain the waste slag and feed liquid 1; b, mixing solution of barium sulfide with ammonium sulfate in a mass ratio of barium sulfide to ammonium sulfate of 1:(0.4-0.5), and performing pressure filtration after reaction and removing precipitate to obtain feed liquid 2; and c, adding the feed liquid 1 into the feed liquid 2, performing pressure filtration to separate out the synthetic reducing agent after a reaction is finished and the lixivium, and then recycling the lixivium into the step a. The synthetic reducing agent has the advantages of efficiently reducing and utilizing manganese dioxide ore, using the waste slag of the electrolytic manganese as a main raw material, largely consuming the waste manganese, and largely reducing the waste slag and carbon dioxide generated in the manufacturing process for leaching and producing the electrolytic manganese by using manganese carbonate and reducing the manganese dioxide ore and by other reduction methods.

Description

Technical field: [0001] The invention relates to a manufacturing process for producing a synthetic reducing agent from electrolytic metal manganese waste residue and the application of the synthetic reducing agent. Background technique: [0002] In my country's electrolytic manganese industry, the manganese triangle at the junction of Hunan, Guizhou and Chongqing is the concentrated place. Due to the early development and rapid development, the supply of manganese carbonate ore in Xiushan and Songtao is already tight, and the local government repeatedly collects resources. Compensation fees and tens of yuan per ton are charged for going out of the county, and the ore price accounts for 1 / 3 of the cost of electrolytic manganese. The mines in Chongqing, Songtao, and Xiangxi all have the phenomenon of indiscriminate mining. The tens of thousands of tons of reserves are currently only half, and the resource recovery rate is very low, only about 50%. 19% dropped below 16%. Howev...

AI Technical Summary

Problems solved by technology

[0003] With the current main production raw materials in the electrolytic manganese industry - the grade and reserves of manganese carbonate ore sources are getting lower and lower, and the production cost of electrolytic manganese is getting higher and higher, and the amount of waste manganese slag brought in the production is getting higher and higher. The harm and pressure on environmental protection are increasing; on the contrary, the reserves and grade of manganese dioxide are very high, but because the reduction process of manganese dioxide ore has not been solved well, so the source of manganese dioxide ore has not been obtained. make good use of