Preparation method and device of lead-acid storage battery positive electrode material

Abstract

The invention relates to a preparation method of a positive electrode material of a lead-acid storage battery, which is characterized by comprising the following steps: 1, carrying out ammonia desulfurization on waste lead plaster, and carrying out solid-liquid separation to obtain a lead carbonate-containing condensate; 2, carrying out high-temperature smelting on the cured product containing lead carbonate to obtain alpha lead oxide, beta lead oxide, lead tetroxide and waste gas, and inputting the waste gas into an ammonia water device to produce a sulfur removal agent containing ammonium carbonate, wherein the sulfur removal agent containing ammonium carbonate is used for desulfurizing the waste lead plaster in the step 1; and 3, the alpha lead oxide, the beta lead oxide and the lead tetroxide are mixed into paste through sulfuric acid. The preparation method of the positive electrode material of the lead-acid storage battery is simple in process and high in efficiency.

Description

technical field [0001] The invention relates to the field of lead-acid batteries. Background technique [0002] At present, the preparation method of the positive electrode material of the lead-acid battery is to prepare refined lead by fire method first, then cold cut into balls and prepare α-lead oxide powder through ball milling, and finally mix the lead powder with battery additives into water and dilute sulfuric acid and make The positive electrode active material lead paste required by the battery. This preparation method needs to first smelt the waste lead paste containing lead sulfate at high temperature to prepare crude lead. Since the melting point of lead sulfate is 1087°C, the smelting temperature needs to reach above 1100°C, and then the crude lead is prepared into refined lead, and then oxidized in a ball mill. Lead, ball milling power consumption 300kwh / t lead oxide, and finally lead oxide into the paste machine, and at the same time add additives, water, sul...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the waste lead paste needs to be smelted at high temperature to make crude lead, the crude lead is refined into refined lead, and the refined lead is cold cut into balls and then ball milled to prepare α-lead oxide lead powder, and then the paste is mixed, and the temperature is raised during the paste mixing process Adding red lead and sulfuric acid to generate β lead oxide at the same time, the whole process consumes a lot of energy, lead fume, lead dust, sulfur dioxide tail gas pollution is serious, and the process is long and economical. It is necessary to prepare additional three lead tetroxide, namely red lead, when mixing the paste , and finally the electrochemical performance of the positive electrode active material is not high due to the preparation of the paste

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