Method for producing lead electrolyte by utilizing industrial waste liquid

Abstract

The invention provides a method for preparing a lead electrolyte by utilizing industrial waste liquids and relates to the field of chemical technology. The method comprises the following operating steps. First, waste liquids generated from industrial production of high calcium fertilizer, phosphate fertilizer, anhydrous hydrofluoric acid and the like are employed as raw materials. Second, after the raw materials being sent into a factory, contents of various components of the raw materials are first tested, and water is added to dilute the raw materials according to the contents of hydrofluoric acid and silicofluoric acid in the raw materials. Third, according to the content of hydrofluoric acid in the raw materials, silicon powder is added, and stirred at a rotating speed of 50-100 r / min for about 24 hours. Fourth, according to the contents of harmful elements such as sulfur, phosphorus and the like, yellow lead powder is added and stirred for about 48 hours to remove sulfate and phosphate. Fifth, if hydrofluoric acid, sulfate, phosphate and the like which are not reacted completely are left in the solution, according to the contents, appropriate amounts of quicklime and plant ash are added to neutralize hydrofluoric acid, sulfate, phosphate and the like to remove hydrofluoric acid, sulfate, phosphate and the like completely, and a qualified lead electrolyte mother liquid is prepared finally. The method solves the problems of high production cost, high energy consumption, environmental pollution and the like in the prior art.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a production method of an electrolyte. Background technique [0002] Under normal circumstances, the industrial production of lead electrolyte is to use sulfuric acid plus fluorite powder (fluorspar) to generate hydrofluoric acid solution after high-temperature roasting, then add silica powder (silicon dioxide) to generate silicofluoric acid, and finally add yellow dandelion powder (lead oxide) to produce lead electrolyte. This traditional production method not only has high production costs (the price of metal is more than 2,000 yuan per ton), but also consumes a lot of energy (it consumes a lot of mineral raw materials such as sulfuric acid, fluorite, and silica), and also discharges a large amount of industrial waste liquid, causing damage to the surrounding environment. Serious pollution is not conducive to environmental protection and sustainable development. Tra...

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Problems solved by technology

[0003] The invention provides a method for producing lead electrolyte by using industrial waste liquid. The invention solves the problem that sulfuric acid plus fluorite powder (fluorspar) is used in the production of lead electrolyte in the prior art to generate hydrofluoric acid solution through high-temperature roasting, and then silica is added. powder (silicon dioxide) to generate silicofluoric acid, and finally add yellow lead powder (lead oxide) to produce lead electrolyte, which has problems such as high production cost, large energy consumption, and unfavorable environmental protection.

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