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Technology of preparing tribasic lead sulphate using bismusic acid leaching slag

A technology of tribasic lead sulfate and leaching slag, applied in the direction of lead sulfate, etc., to achieve the effect of solving lead pollution and reasonable process route

Inactive Publication Date: 2007-04-18
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention has the advantages of: (1) comprehensive utilization of waste residues to solve the problem of lead pollution; (2) reasonable process route; (3) reaction at normal temperature and pressure

Method used

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  • Technology of preparing tribasic lead sulphate using bismusic acid leaching slag
  • Technology of preparing tribasic lead sulphate using bismusic acid leaching slag

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Embodiment Construction

[0007] As shown in Figure 1, the production process steps of the present invention are: (1) ammonium bicarbonate conversion; Under normal temperature and pressure, weigh the bismuth smelting slag 50g of particle diameter about 160 orders with electronic balance, join in the beaker; by NH 4 HCO 3 / Pb molar ratio is 2.5:1, add ammonium bicarbonate, then add a certain amount of water to make the liquid-solid ratio reach 3:1, then add a certain amount of ammonia water to the mixture, and then stir to make it fully react for 2.5h, so that The lead in the bismuth smelting slag is fully converted into lead carbonate. Suction filtration after the completion of the reaction, the obtained filter residue is dried in an oven for subsequent use; (2) nitric acid leaching and sulfuric acid lead sinking: under normal temperature and pressure, weigh the filter residue 50g of the previous step with an electronic balance, add it to the beaker, Press HNO 3 The / Pb molar ratio is 3: 1, add 15% ...

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Abstract

The present invention relates to a process for preparing tribasic lead sulfate by using bismuthic pickled slag. Said process includes the following several steps: (1), ammonium hydrogen carbonate conversion; (2), nitric acid leaching out and sulfuric acid depositing lead; and (3), sodium hydroxide synthesis.

Description

technical field [0001] The invention relates to a process for preparing tribasic lead sulfate by using bismuth acid leaching residue. Background technique [0002] As an inorganic chemical raw material, tribasic lead sulfate is widely used in the production of storage batteries and paint pigments. The leaching residue of bismuth smelting acid contains valuable metals such as lead, copper, silver, bismuth, etc., and the lead content is generally as high as 60% to 70%. %, the comprehensive development and utilization of bismuth acid leaching residue to produce tribasic lead sulfate can not only solve the problems of lead pollution, but also realize the recycling of resources. Contents of the invention [0003] The object of the present invention is to provide a kind of technology that utilizes bismuth acid leaching residue to produce tribasic lead sulfate, completely separate the lead in the waste residue from bismuth refining ...

Claims

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Application Information

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IPC IPC(8): C01G21/20
Inventor 邱祖民张玉英罗金凤
Owner NANCHANG UNIV