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Regeneration additive for scrapped phosphate solution

A technology of additives and phosphating solution, which is applied in the coating process of metal materials, etc., can solve the problems of high processing cost and narrow application range, and achieve the effects of high regeneration efficiency, environmental protection and production cost saving

Inactive Publication Date: 2014-04-02
仲集华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the method of treating industrial waste phosphating solution in our country is to recycle first, then separate heavy metals, and then carry out technological transformation. The treatment cost is high and the application range is narrow.

Method used

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Embodiment Construction

[0009] The present invention will be further explained below.

[0010] The regeneration additive of the scrapped zinc-based phosphating solution is composed of a film-forming agent and a slag reducer; the film-former is zinc dihydrogen phosphate; and the slag reducer is hydroxyethylene diphosphonic acid.

[0011] In the present invention, the zinc dihydrogen phosphate, zinc nitrate, and hydroxyethylidene diphosphonic acid are respectively in parts by weight: 4 parts; 30 parts; 2 parts. The zinc dihydrogen phosphate, zinc nitrate, and hydroxyethylene diphosphonic acid are in equal proportions by weight. Just mix it.

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PUM

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Abstract

The invention discloses a regeneration additive for a scrapped phosphate solution. The regeneration additive is prepared from a film forming agent and a slag reducing agent, wherein the film forming agent is zinc dihydrogen phosphate or zinc nitrate, and the slag reducing agent is hydroxy ethylidene diphosphonic acid. According to the regeneration additive, the shortages of environmental-friendly treatment methods for scrapped zinc phosphate solutions are overcome technically, the scrapped solution is not required to be transferred, the transportation cost and the risk that secondary pollution is easily caused during transportation are reduced, and the regeneration at customer sites is realized. Compared with the prior art, the regeneration additive has the advantages that the operability is strong, the regeneration efficiency is high, a long-term recycle scheme can be realized, energy sources and raw materials are saved, the environmental protection is facilitated, and the labor intensity is lowered.

Description

technical field [0001] The invention belongs to the technical field of regeneration, in particular to a regeneration additive capable of regenerating waste phosphating solution. Background technique [0002] With the rapid development of industrialization, the use of zinc-based phosphating solution as an important metal surface pretreatment product is increasing, and the scrapped zinc-based phosphating solution is increasing year by year. Since the scrapped industrial phosphating solution will produce a "red tide" phenomenon, it is a dangerous chemical and is not allowed to be discharged at will. At present, the method of treating industrial waste phosphating solution in our country is to recycle first, then separate heavy metals, and then carry out technological transformation. The treatment cost is high and the application range is narrow. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide...

Claims

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Application Information

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IPC IPC(8): C23C22/86
CPCC23C22/86
Inventor 仲集华
Owner 仲集华