Preparation method of lead oxide

Abstract

The invention relates to a preparation method of lead oxide, and the method is characterized by comprising the following steps of: 1. desulfurizing waste lead plaster, and carrying out solid-liquid separation to obtain a lead carbonate-containing cured product; and 2, carrying out high-temperature smelting on the lead carbonate-containing cured product to obtain lead oxide and waste gas, inputtingthe waste gas into an ammonia water device to produce a sulfur removal agent containing ammonium carbonate, and using the sulfur removal agent containing ammonium carbonate to desulfurize the waste lead plaster in the step 1. The preparation method of lead oxide is simple in process, high in efficiency and low in cost.

Description

technical field

[0001] The invention relates to the field of lead-acid batteries. Background technique

[0002] At present, in the preparation method of the positive electrode material of the lead-acid battery, red lead, sulfuric acid and other substances are usually added to the lead oxide to form a paste. At present, the manufacture of the lead oxide is to prepare the refined lead through the waste lead paste first fire method, and then cold cut into balls and Prepare α-lead oxide powder by ball milling, and then make lead paste. 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 ti...

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