A four-stage extraction system for alkaline etching solution
An etching solution and extraction technology, which is applied in the field of extraction system, can solve the problems of low copper precipitation, low extraction rate, and inconvenient use of the occupied area, and achieve the effect of high copper extraction efficiency, convenient use, and small occupied area
Active Publication Date: 2017-01-04
KUNSHAN MEIYUANDA ENVIRONMENTAL PROTECTION TECH
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Problems solved by technology
The recovery of the used etching solution is mainly to precipitate the copper in it, but in the prior art, the amount of copper precipitation in many devices is low, the extraction rate is not high, and the occupied area is so large that it is inconvenient to use
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[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.
[0015] combine Figure 1-4 , the present invention proposes a four-stage extraction system for alkaline etching solution, including an extraction section and a stripping section, the extraction section and the stripping section are arranged side by side on a frame 1, and the extraction section includes a first stirring chamber 2 , the buffer chamber 3, communicated with the first stirring chamber 2 with a first liquid stabilization chamber 4, the first liquid stabilization chamber 4 communicates with the first layered chamber 5, the first liquid stabilization chamber 4 There are a plurality of liquid stabilizing plate groups 6 arranged up and down, the end of the first liquid stabilizing chamber 4 is provided with a first partition 7, and the first partition 7 separates the ac...
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The invention provides an alkaline etching solution four-stage extraction system which comprises an extraction section and a back extraction section, wherein the extraction section and back extraction section are arranged on the machine frame in parallel; the extraction section comprises a first stirring cavity and first stratified a cache cavity; the first stirring cavity is communicated with a first liquid stabilizing cavity; the first liquid stabilizing cavity is communicated with a stratification cavity; a plurality of liquid stabilizing plate sets, which are arranged up and down, are arranged in the first liquid stabilizing cavity; the tail end of the first liquid stabilizing cavity is provided with a first partition plate; and a containing cavity is separated by the first partition plate. The etching solution is subjected to extraction and back extraction to precipitate the metal copper in an automatic cycle mode, and the overall system is connected in a closed mode, so no wastewater is generated; the regenerated solution and the like are automatically subjected to re-extraction, so the copper extraction efficiency is high, and the copper content in the residual liquid is only 0.5 g / L; and the extraction system has the advantages of compact structure, small occupied area and high efficiency, and is convenient to use.
Description
technical field [0001] The invention relates to the field of extraction systems, in particular to an alkaline etching solution extraction system. Background technique [0002] In the acid etching solution for printed circuit boards, the waste solution contains more than 100g / L of copper. If it cannot be recycled well, it will lead to a large loss of copper resources and serious pollution to the environment. During the etching process, conventional chloride etchant must be continuously replaced by fresh etchant or recycled etchant. The recovery of the used etching solution is mainly to precipitate the copper in it, but in the prior art, the copper precipitation amount of many devices is low, the extraction rate is not high, and the occupied area is large and inconvenient to use. Contents of the invention [0003] In order to solve the above technical problems, the present invention proposes a four-stage extraction system for alkaline etching solution, including an extracti...
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IPC IPC(8): C22B3/02C22B7/00C22B15/00
CPCY02P10/20
Inventor 周爱成邰康乾赵奕栋樊新林
Owner KUNSHAN MEIYUANDA ENVIRONMENTAL PROTECTION TECH