CN101348915A - Metal corrosion product cleaning agent and use method thereof - Google Patents
Metal corrosion product cleaning agent and use method thereof Download PDFInfo
- Publication number
- CN101348915A CN101348915A CNA2008100460194A CN200810046019A CN101348915A CN 101348915 A CN101348915 A CN 101348915A CN A2008100460194 A CNA2008100460194 A CN A2008100460194A CN 200810046019 A CN200810046019 A CN 200810046019A CN 101348915 A CN101348915 A CN 101348915A
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- China
- Prior art keywords
- cleaning agent
- agent
- corrosion product
- metal corrosion
- cleaning
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Abstract
The invention discloses a metal corrosion product cleaning agent and a usage thereof. The cleaning agent is an aqueous solution consisting of a complexing agent, an auxiliary agent and water. The cleaning agent is characterized in that the aqueous solution contains EDTA disodium salt which accounts for 10 to 15 percent of weight and is used as the complexing agent, hydrazine which accounts for 1 percent of weight and is used as the auxiliary agent, as well as the balance being water. In the usage of the cleaning agent, when the cleaning agent is used to clean metal corrosion products, the temperature of the cleaning agent needs to be kept between 90 and 100 DEG C. The cleaning agent has the prominent advantages that the cleaning agent improves the efficiency and effect of cleaning metal corrosion product mixture Fe3O4+Fe(OH)3 and is little corrosion on equipment material, economical and applicable.
Description
Technical field
The present invention relates to a kind of chemical, relate to a kind of clean-out system and using method thereof of removing metallic corrosion products that be specifically designed to specifically.
Background technology
At present, in the domestic metallic corrosion products cleaning technique, the corrosion product clean-out system that is adopted is mainly sour reagent.Cleaning principle is a clean-out system when cleaning corrosion product, can generate certain corresponding sour iron with the corrosion product reaction.As publication number is the Chinese patent " a kind of metallic surface agent for cleaning and scale-removing " of CN17515452, and its prescription is: thionamic acid: 50～60%, and citric acid: 15～25%, oxalic acid: 15～25%.And for example publication number is the Chinese patent " Stainless Steel Cleaner and preparation method thereof " of CN1696351, and its prescription is: nitric acid: 1～50%, and hydrochloric acid: 5～50%, ammonium persulphate: 0.5～8%, water soluble chloride: 0～20%, catalyzer: 0.5～20%, sustained release dosage: 0.1～5%.But above-mentioned clean-out system is sour reagent, and its shortcoming is not high to the cleaning efficiency of corrosion product, and easily equipment is caused corrosion.
Summary of the invention
The objective of the invention is to: provide a kind of cleaning performance good, little, economical and practical metal corrosion product cleaning agent equipment and materials corrosion; Another object of the present invention provides the using method of this metal corrosion product cleaning agent.
Technical scheme of the present invention is:
A kind of metal corrosion product cleaning agent, be the aqueous solution of forming by complexing agent, auxiliary agent and water, it is characterized in that: in this aqueous solution, contain the disodium EDTA as complexing agent (EDTA disodium salt) of weight 10%～15%, the hydrazine (N as auxiliary agent of weight 1%
2H
4), surplus is a water.
The preparation method of metal corrosion product cleaning agent of the present invention:
Preparing metal corrosion product detergent solution by weight percentage: the hydrazine (N of 10%～15% EDTA disodium salt+1%
2H
4), surplus is a water.
The using method of metal corrosion product cleaning agent of the present invention is with described clean-out system clean metal corrosion product the time, makes the temperature of this clean-out system remain on 90 ℃-100 ℃.
The beneficial effect of clean-out system of the present invention is: having overcome existing clean-out system is that low the reaching of sour reagent place inherent cleaning efficiency caused the corrosive shortcoming to equipment and materials.Adopt clean-out system of the present invention, the corrosion of equipment and materials is reduced, its solidity to corrosion grade of test shows is 1 grade; Improved cleaning efficiency to metallic corrosion products to reach 〉=98%, cleaning performance is good and economic and practical.
Embodiment
Metal corrosion product cleaning agent of the present invention contains 10%～15% disodium EDTA (EDTA disodium salt), contains 1% hydrazine (N
2H
4), surplus is a water.
The preparation and the using method of metal corrosion product cleaning agent of the present invention are as follows:
(1) preparing metal corrosion product detergent solution by weight percentage: the hydrazine (N of 10%～15% EDTA disodium salt+1%
2H
4), surplus is a water.
(2), heat to 90 ℃～100 ℃ and use with the above-mentioned detergent solution for preparing.
The cleaning principle of metal corrosion product cleaning agent of the present invention is based on the complexing dissolving.
Main reagent E DTA disodium salt in the clean-out system of the present invention is a kind of complexing agent, when cleaning corrosion product, this complexing agent and metal ion generation complex reaction, corrosion product is dissolved, dissolving along with corrosion product, the oxyhydroxide that complex reaction produces raises pH value of solution, and the extent of corrosion of equipment and materials is reduced.At pH is 8.5 when following, and the complexing solubilizing reaction all can carry out to right-hand, this be since in this moment solution hydroxide radical concentration still low, and clean-out system master reagent E DTA disodium salt concentration is higher.If pH value of solution surpasses 9, add the consumption of clean-out system master reagent E DTA disodium salt, then can make the hydroxide high ferro-Fe (OH) of indissoluble
3Be precipitated out.Precipitation for high price iron in preventing to clean adds cleaning additive hydrazine (N in solution
2H
4), cleaning additive hydrazine (N
2H
4) be a kind of reductive agent, ferric iron can be reduced to ferrous iron.
Test shows: adopt clean-out system of the present invention, to the cleaning efficiency of metallic corrosion products reach 〉=98%.
Claims (2)
1. metal corrosion product cleaning agent, be the aqueous solution of forming by complexing agent, auxiliary agent and water, it is characterized in that: in this aqueous solution, contain the disodium EDTA as complexing agent of weight 10%～15%, the hydrazine as auxiliary agent of weight 1%, surplus is a water.
2. using the method for the described metal corrosion product cleaning agent of claim 1, is with described clean-out system clean metal corrosion product the time, makes the temperature of this clean-out system remain on 90 ℃～100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100460194A CN101348915A (en) | 2008-09-10 | 2008-09-10 | Metal corrosion product cleaning agent and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100460194A CN101348915A (en) | 2008-09-10 | 2008-09-10 | Metal corrosion product cleaning agent and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101348915A true CN101348915A (en) | 2009-01-21 |
Family
ID=40267881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100460194A Pending CN101348915A (en) | 2008-09-10 | 2008-09-10 | Metal corrosion product cleaning agent and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101348915A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102234810A (en) * | 2010-04-20 | 2011-11-09 | 深圳富泰宏精密工业有限公司 | Cleaning agent for etched stainless steel and using method thereof |
-
2008
- 2008-09-10 CN CNA2008100460194A patent/CN101348915A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102234810A (en) * | 2010-04-20 | 2011-11-09 | 深圳富泰宏精密工业有限公司 | Cleaning agent for etched stainless steel and using method thereof |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20090121 |