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A kind of method utilizing lead sulfate leaching solution to prepare organic acid lead salt

A lead sulfate and leaching solution technology, applied in the field of resource recovery and utilization, can solve the problems of complex waste lead composition, unrealistic organic acid lead salts, etc., and achieve the effects of easy industrial production, rapid response, and beneficial recycling.

Inactive Publication Date: 2017-11-07
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of waste lead is produced every year, such as the lead paste separated from waste lead-acid batteries and the waste lead slag in the smelting industry. However, the composition of these waste lead is complex and the sources are wide. It is not easy to directly use waste lead to prepare organic acid lead salt. Reality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add lead sulfate leaching solution in the stirred tank, add 1-heptanoic acid of 2 times the molar quantity of lead sulfate in the solution, stir evenly, add potassium hydroxide solid of 2.1 times the molar quantity of 1-heptanoic acid, react at 40°C for 2 hours, filter The solid was washed and dried to obtain 1-lead heptanoate solid. The conversion of lead sulfate was 99%, and the yield was 99%.

Embodiment 2

[0022] Add lead sulfate leaching solution in the stirred tank, add 1-nonanoic acid with 2 times the molar quantity of lead sulfate in the solution, stir evenly, add potassium hydroxide solid with 2.1 times the molar quantity of 1-nonanoic acid, react at 40°C for 2 hours, filter The solid was washed and dried to obtain 1-lead nonanoate solid. The conversion rate of lead sulfate is 98.5%, and the yield is 98.5%

Embodiment 3

[0024] Add lead sulfate leaching solution into the stirred tank, add octadecanoic acid with 2 times the molar amount of lead sulfate in the solution, stir evenly, add ammonia water with 4 times the molar amount of octadecanoic acid, react at 40°C for 2 hours, filter out the solid, wash and dry Dry to obtain lead octadecanoate solid. The conversion rate of lead sulfate is 100%, and the yield is 100%.

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PUM

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Abstract

The invention discloses a method for preparing organic acid lead salt through a lead sulfate leaching agent. According to the method, organic matter is added in the lead sulfate leaching agent, and then alkali is added for the reaction to prepare the organic acid lead salt. The organic lead salt with the high added value can be conveniently prepared from the lead sulfate leaching agent contained in or obtained through treatment from pure lead sulfate or waste lead, and cyclic utilization of lead resources is facilitated. The method has the beneficial effects that the technology is simple, and reaction is rapid, and industrial production is easy to achieve.

Description

technical field [0001] The invention belongs to the field of resource recovery and utilization, in particular to a method for preparing organic acid lead salts by using lead sulfate leaching solution. Background technique [0002] Organic acid lead salts can be used as heat stabilizers and lubricants for polyvinyl chloride, and have good lubricity and light and heat stability. Common organic acid lead salts used as stabilizers include lead octadecanoate and dibasic octadecanoate Lead, their annual demand amounts to hundreds of thousands of tons. The preparation method of these organic acid lead salts mainly contains two kinds, and the one, utilizes plumbous oxide and organic matter reaction preparation, the 2nd, utilizes soluble lead salt such as lead acetate or lead nitrate and sodium, potassium salt of organic matter to make. However, both of these methods start with lead oxide or use lead oxide to prepare soluble lead salts, which need to consume a large amount of refine...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B13/00
CPCC22B13/04
Inventor 曹靖张俊丰
Owner XIANGTAN UNIV