Method for preparing battery raw material by using electrolytic manganese anode mud and product thereof

Abstract

The invention relates to a method for preparing battery raw materials by using electrolytic manganese anode mud and a product thereof. The method comprises the following steps of: drying the collected electrolytic manganese anode mud; then, sufficiently mixing the collected electrolytic manganese anode mud and an 2mol / L H2SO4 solution, and the ratio of the dried anode mud and the H2SO4 solution is 1g:5-10mL; next, carrying out solid-liquid separation to remove sulfate ions; drying solids; adding iron liquid into the dried solids; and evenly mixing. The product is a battery raw material with active manganese dioxide according to the method. The apparent gravity of the battery raw material reaches 1.73-2.04g / cm3, and the content of the active manganese dioxide is above 78.8 percent. The method of the invention has low integrated cost, is easy to operate, is beneficial to environmental protection and is especially beneficial to the industrialized production of electrolytic manganese production plants. The product can completely replace various kinds of manganese dioxide in the prior art as the battery raw materials and save a great deal of resources naturally.

Description

technical field [0001] The invention relates to a method for modifying electrolytic manganese anode slime and a modified product. Background technique [0002] my country is rich in manganese ore resources and is the largest producer, consumer and exporter of electrolytic manganese metal (referred to as "electrolytic manganese") in the world. In the electrolytic manganese production process, a large amount of dust, waste gas, waste water and solid waste are generated, and the solid waste includes the anode slime collected in the tank cleaning process. This anode slime consists of part of the Mn in the electrolyte 2+ Oxidized to form Mn in the anode slime area 4+ The hydrated oxides and some other components of the compound have complex components, and the properties of the compound are seriously changed during the electrolysis process. Therefore, resource utilization is very difficult, except for a small amount used to oxidize ferrous iron, most of them become waste, whic...

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Problems solved by technology

However, due to the alkali oxidation method used in this process, the electrolytic manganese anode slime and alkali are first passed through "high-temperature calcination", so, although after further treatment, it is finally possible to prepare the apparent specific gravity of 1.61g / cm 3 , Manganese dioxide-containing battery raw materials that can meet the electrochemical performance requirements, but it will cause secondary pollution to the environment, and if the electrolytic manganese production plant directly applies this method to deal with it in order to obtain greater economic benefits In the case of electrolytic manganese anode slime, roasting furnaces and related equipment and facilities have to be purchased, which means that additional investment in equipment is required

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