CN103866338A - Environment-friendly aluminum housing cleaning and treating process and aluminum housing cleaning solution - Google Patents

Abstract

The invention relates to an aluminum housing cleaning solution which comprises the following components: 1-7 percent of sodium tripolyphosphate, 4-6 percent of sodium pyrophosphate, 1-8 percent of sodium metasilicate pentahydrate, 2-10 percent of superstrong degreasing dedicated surfactant TZ-03, 0.1-2.0 percent of fatty acid methyl ester ethoxylate (FMEE), 2-3 percent of penetrant JFC, 0.5-1 percent of defoamer and the balance of deionized water. According to the aluminum housing cleaning solution disclosed by the invention, the surface of a cleaned aluminum housing reaches the requirements of brightness and no scratch; in addition, hazardous substances inhibited in European Union ROHS are avoided, cleaning waste liquor can be recycled after being treated, and thus no pollution is caused to the environment; the manufacturing cost is low.

Description

A kind of environmental protection aluminum hull clean technique and aluminum hull scavenging solution

Technical field

The invention belongs to the processing and manufacturing field of aluminium shell of capacitor, be specifically related to a kind of environmental protection aluminum hull clean technique and aluminum hull scavenging solution.

Background technology

The cleaning of aluminium shell of capacitor, two kinds of cleaning ways of the general employing of domestic enterprise: 1, organic solvent cleans, and taking zellon as example, the price of zellon is at present at 7000 yuan/ton, cost is higher, and there is solvent evaporates and bad recycling, after cleaning, aluminum hull surface has the residual of chlorion, this is the material that does not allow existence in aluminum hull standard, more seriously directly discharge can cause environmental pollution, if carry out safety dumping, the harmless treatment expense of waste liquid is very high; 2, adopt dilute nitric acid solution to clean, although the cost of nitric acid is lower, although only have 2000 yuan/ton of left and right, after but the aluminum hull surface after cleaning with nitric acid is corroded by nitric acid, the luminance brightness on surface irregularity and surface does not reach requirement, and client is more difficult in the time giving capacitor casing, and cleaning performance is poor.And the waste liquid acid-base neutralisation processing after cleaning, has increased cost.

Summary of the invention

The object of this is to provide a kind of environmental protection aluminum hull clean technique, water-based is cleaned to waste liquid reclaims, processing and recirculation operation technique.

The technical solution used in the present invention is: step 1, and aluminum hull to be cleaned is positioned in rinse bath, and scavenging solution and appropriate water are injected to rinse bath, cleans; Step 2, scavenging solution enters settling tank, a small amount of deposition of solids in scavenging solution; Step 3, scavenging solution enters filter vat, and point liquid bath that reinjects after filtering separates the micro-machine oil of sneaking in scavenging solution; Step 4, injects rinse bath by the scavenging solution separating after step 3, thereby realizes recycling of scavenging solution.

Another object of the present invention is to provide a kind of aluminum hull scavenging solution, and its quality composition comprises:

Tripoly phosphate sodium STPP 1～7%, trisodium phosphate 4～6%, metasilicate pentahydrate sodium 1～8%, superpower degreasing special surfactant TZ-032～10%, fatty acid methyl ester ethoxylate (FMEE) 0.1～2.0%, penetrating agent JFC 2～3%, defoamer 0.5～1% and surplus deionized water.

As preferably, a kind of aluminum hull scavenging solution, its quality composition comprises: tripoly phosphate sodium STPP 2～5%, trisodium phosphate 4～5%, metasilicate pentahydrate sodium 3～4%, superpower degreasing special surfactant TZ-035～8%, fatty acid methyl ester ethoxylate (FMEE) 0.1～1.0%, penetrating agent JFC 2.5%, defoamer 1% and surplus deionized water.

The use of above-mentioned defoamer, deionized water, for this area public technology, is not particularly limited herein.

Beneficial effect: treatment process of the present invention, make aluminum hull surface of aluminum hull after cleaning reach light, without the requirement scratching, and there is no to forbid in the ROHS of European Union the objectionable impurities containing, the waste liquid of cleaning after treatment, can recycle, environment is not polluted; A kind of aluminum hull scavenging solution provided by the invention, cleaning performance is good, and projected cost is at 1500 yuan/ton, low cost of manufacture.

Brief description of the drawings

Fig. 1 is scavenging solution cycle for the treatment of operation schema of the present invention.

Embodiment

Below in conjunction with embodiment, the present invention will be further described.

Embodiment 1

A kind of aluminum hull scavenging solution, its quality composition comprises: tripoly phosphate sodium STPP 1～7%, trisodium phosphate 4～6%, metasilicate pentahydrate sodium 1～8%, superpower degreasing special surfactant TZ-032～10%, fatty acid methyl ester ethoxylate (FMEE) 0.1～2.0%, penetrating agent JFC 2～3%, defoamer 0.5～1% and surplus deionized water.

Embodiment 2

A kind of aluminum hull scavenging solution, its quality composition comprises: tripoly phosphate sodium STPP 2～5%, trisodium phosphate 4～5%, metasilicate pentahydrate sodium 3～4%, superpower degreasing special surfactant TZ-035～8%, fatty acid methyl ester ethoxylate (FMEE) 0.1～1.0%, penetrating agent JFC 2.5%, defoamer 1% and surplus deionized water.

Embodiment 3

A kind of aluminum hull scavenging solution, its quality composition comprises: tripoly phosphate sodium STPP 5%, trisodium phosphate 55%, metasilicate pentahydrate sodium 4%, superpower degreasing special surfactant TZ-038%, fatty acid methyl ester ethoxylate (FMEE) 1.0%, penetrating agent JFC 2.5%, defoamer 1% and deionized water 23.5%.

In embodiment 1,2,3, the use of defoamer, deionized water, for this area public technology, is not particularly limited herein.

A kind of environmental protection aluminum hull clean technique, specifically comprises:

Step 1, aluminum hull to be cleaned is positioned in rinse bath, and scavenging solution and appropriate water are injected to rinse bath, cleans; Step 2, scavenging solution enters settling tank, a small amount of deposition of solids in scavenging solution; Step 3, scavenging solution enters filter vat, and point liquid bath that reinjects after filtering separates the micro-machine oil of sneaking in scavenging solution; Step 4, injects rinse bath by the scavenging solution separating after step 3, thereby realizes recycling of scavenging solution.

The present invention, adopts green environment protection water scavenging solution, forms by the organic components such as inorganic component and nonionogenic tenside is composite; This scavenging solution is compared with organic cleaning solvent, and or not containing volatile organic compounds, cost is not low, and or not containing poisonous, harmful chemical, safety easy to use, does not almost have three waste discharge; Compared with dilute nitric acid solution clean-out system, this clean-out system cleaning performance is good, and the luminance brightness on aluminium shell of capacitor surface is high, the accident potential that has avoided salpeter solution to spill hurting sb.'s feelings and processing and the discharge of waste acid liquor;

The present invention adopts new cleaning, adopts this technique can make scavenging solution recycle, and there is no discharging of waste liquid, has not only dropped to widely the cleaning cost of aluminium shell of capacitor, and has improved efficiency, and quality product and production safety have also obtained guarantee.

Claims (4)

1. an aluminum hull scavenging solution, its quality composition comprises: tripoly phosphate sodium STPP 1～7%, trisodium phosphate 4～6%, metasilicate pentahydrate sodium 1～8%, superpower degreasing special surfactant TZ-032～10%, fatty acid methyl ester ethoxylate (FMEE) 0.1～2.0%, penetrating agent JFC 2～3%, defoamer 0.5～1% and surplus deionized water.

2. a kind of aluminum hull scavenging solution according to claim 1, is characterized in that: its quality composition comprises: tripoly phosphate sodium STPP 2～5%, trisodium phosphate 4～5%, metasilicate pentahydrate sodium 3～4%, superpower degreasing special surfactant TZ-035～8%, fatty acid methyl ester ethoxylate (FMEE) 0.1～1.0%, penetrating agent JFC 2.5%, defoamer 1% and surplus deionized water.

3. a kind of aluminum hull scavenging solution according to claim 2, is characterized in that: its quality composition comprises: tripoly phosphate sodium STPP 5%, trisodium phosphate 55%, metasilicate pentahydrate sodium 4%, superpower degreasing special surfactant TZ-038%, fatty acid methyl ester ethoxylate (FMEE) 1.0%, penetrating agent JFC 2.5%, defoamer 1% and deionized water 23.5%.

4. an environmental protection aluminum hull clean technique, its processing step comprises:

Step 1, aluminum hull to be cleaned is positioned in rinse bath, and scavenging solution and appropriate water are injected to rinse bath, cleans; Step 2, scavenging solution enters settling tank, a small amount of deposition of solids in scavenging solution; Step 3, scavenging solution enters filter vat, and point liquid bath that reinjects after filtering separates the micro-machine oil of sneaking in scavenging solution; Step 4, injects rinse bath by the scavenging solution separating after step 3, thereby realizes recycling of scavenging solution.

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