CN103526214B - The method for cleaning of zinc ingot metal mould in a kind of zinc hydrometallurgy - Google Patents
The method for cleaning of zinc ingot metal mould in a kind of zinc hydrometallurgy Download PDFInfo
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- CN103526214B CN103526214B CN201310401318.6A CN201310401318A CN103526214B CN 103526214 B CN103526214 B CN 103526214B CN 201310401318 A CN201310401318 A CN 201310401318A CN 103526214 B CN103526214 B CN 103526214B
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- ingot metal
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Abstract
A method for cleaning for zinc ingot metal mould in zinc hydrometallurgy, is put in container by zinc ingot metal Mould Code, then in container, adds scavenging solution, make scavenging solution submergence zinc ingot metal mould, then clean at higher than the temperature of 70 DEG C, until when scavenging solution bubble-free is emerged, complete cleaning.Because fouling structure is very fine and close, hard, be difficult to remove with the physical method of machinery, and likely infringement is produced to mould, so the present invention takes the method for chemical cleaning solution cleaning die, effectively remove layer of scale, and any damage is not produced to mould, process rear mold is sparkling clean, can be applied in actual production.
Description
Technical field
The present invention relates to a kind of purging method, be specifically related to the method for cleaning of zinc ingot metal mould in a kind of zinc hydrometallurgy.
Background technology
In non-ferrous metal metallurgy Zinc Hydrometallurgy Process, separating out rolled tin ingot casting is last procedure.The cast iron casting mould that uses of casting zinc ingot metal, through using for a long time, a thick layer of fouling that inwall can condense, causes institute's output zinc ingot metal outward appearance pole unfairness, and that the handwriting is blurred is unclear for trade mark, has had a strong impact on the visual appearance of zinc ingot metal.There are two kinds of mode process fouling moulds in current domestic zinc metallurgy enterprise.One is labor cleaning, and with the polishing of angle grinding machine, labour intensity is large, and dust is large, seriously polluted, and cleaning is unclean, likely damages mould and causes scrapping; Two is strong acid cleanings, although the method cleaning is comparatively thorough, comparatively large to mould corrosion, mould is cleared up post-etching through more than twice and seriously caused scrapping.
Summary of the invention
The object of the invention is to overcome the deficiency in existing method, propose the method for cleaning of zinc ingot metal mould in zinc hydrometallurgy, can clear up fouling completely, cleaning performance is good, on mould without any impact.
For achieving the above object, the present invention adopts following technical scheme:
A method for cleaning for zinc ingot metal mould in zinc hydrometallurgy, is put in container by zinc ingot metal Mould Code, then in container, adds scavenging solution, make scavenging solution submergence zinc ingot metal mould, then clean at higher than the temperature of 70 DEG C, until when scavenging solution bubble-free is emerged, complete cleaning; Wherein, scavenging solution is added to the water obtained by ammonium acetate, acetic acid.
In described scavenging solution, the massfraction of ammonium acetate is 8% ~ 20%, and the massfraction of acetic acid is 2% ~ 10%.
The described temperature higher than 70 DEG C realizes by passing into steam in container.
The described time completing cleaning is 6 ~ 8 hours.
Described container is stainless steel vessel.
The zinc ingot metal mould completing cleaning also cleans with water.
Relative to prior art, beneficial effect of the present invention is:
(1) scale removal labour intensity is little;
(2) clear up thorough and any corrosion is not produced to mould;
(3) work situation is improved greatly;
(4) recyclable a certain amount of zinc metal, cost-saving;
(5) present method is easy and simple to handle.
Because fouling structure is very fine and close, hard, be difficult to remove with the physical method of machinery, and likely infringement is produced to mould, so the present invention takes the method for chemical cleaning solution cleaning die, effectively remove layer of scale, and any damage is not produced to mould, process rear mold is sparkling clean, can be applied in actual production.
Embodiment
Through analyzing zinc ingot metal mould fouling sample examination, its major ingredient known is simple substance zinc and zinc oxide, also has the iron of minute quantity; Wherein, the mass percent of simple substance zinc is approximately 30 ~ 50%, and the mass percent of zinc oxide is 50 ~ 70%.The present invention, according to the composition of fouling in mould, selects suitable solvent, under certain temperature condition, layer of scale is dissolved removing and does not destroy mould.The present invention adopts the method for acetic acid-ammonium acetate solution process, effectively removes layer of scale.
Concrete resisting scales is as follows:
ZnO+2NH
4 +=Zn(NH
3)
2 2++H
2O（1）
Zn+2H
+=Zn
2++H
2（2）
ZnO+2H
+=Zn
2++H
2O（3）
As can be seen from chemical equation (1) ~ (3) above, the ammonium ion in ammonium acetate and zinc oxide reaction, the hydrogen ion in acetic acid and simple substance zinc, zinc oxide react, thus reach the object removing fouling.
Below by embodiment, the present invention is described in further detail.
Embodiment 1
Zinc ingot metal Mould Code is put in stainless steel vessel, then in stainless steel vessel, scavenging solution is added, make scavenging solution submergence zinc ingot metal mould, then in stainless steel vessel, steam is passed into, when stainless steel vessel cleaning liquid inside temperature is higher than 70 DEG C, stop passing into steam, if when stainless steel vessel cleaning liquid inside temperature is lower than 70 DEG C, then continue to pass into steam, to make in stainless steel vessel temperature higher than 70 DEG C; Cleaning is carried out 6 hours, until when scavenging solution bubble-free is emerged, complete cleaning at higher than the temperature of 70 DEG C.Wherein, scavenging solution is added to the water obtained by ammonium acetate, acetic acid, and in scavenging solution, the massfraction of ammonium acetate is 8%, and the massfraction of acetic acid is 2%.
Embodiment 2
Zinc ingot metal Mould Code is put in stainless steel vessel, then in stainless steel vessel, scavenging solution is added, make scavenging solution submergence zinc ingot metal mould, then in stainless steel vessel, steam is passed into, when stainless steel vessel cleaning liquid inside temperature is higher than 70 DEG C, stop passing into steam, if when stainless steel vessel cleaning liquid inside temperature is lower than 70 DEG C, then continue to pass into steam, to make in stainless steel vessel temperature higher than 70 DEG C; Cleaning is carried out 7 hours, until when scavenging solution bubble-free is emerged, complete cleaning at higher than the temperature of 70 DEG C.Wherein, scavenging solution is added to the water obtained by ammonium acetate, acetic acid, and in scavenging solution, the massfraction of ammonium acetate is 15%, and the massfraction of acetic acid is 5%.
Embodiment 3
Zinc ingot metal Mould Code is put in stainless steel vessel, then in stainless steel vessel, scavenging solution is added, make scavenging solution submergence zinc ingot metal mould, then in stainless steel vessel, steam is passed into, when stainless steel vessel cleaning liquid inside temperature is higher than 70 DEG C, stop passing into steam, if when stainless steel vessel cleaning liquid inside temperature is lower than 70 DEG C, then continue to pass into steam, to make in stainless steel vessel temperature higher than 70 DEG C; Cleaning is carried out 6 hours, until when scavenging solution bubble-free is emerged, complete cleaning at higher than the temperature of 70 DEG C.Wherein, scavenging solution is added to the water obtained by ammonium acetate, acetic acid, and in scavenging solution, the massfraction of ammonium acetate is 12%, and the massfraction of acetic acid is 10%.
Embodiment 4
Zinc ingot metal Mould Code is put in stainless steel vessel, then in stainless steel vessel, scavenging solution is added, make scavenging solution submergence zinc ingot metal mould, then in stainless steel vessel, steam is passed into, when stainless steel vessel cleaning liquid inside temperature is higher than 70 DEG C, stop passing into steam, if when stainless steel vessel cleaning liquid inside temperature is lower than 70 DEG C, then continue to pass into steam, to make in stainless steel vessel temperature higher than 70 DEG C; Cleaning is carried out 6 hours, until when scavenging solution bubble-free is emerged, complete cleaning at higher than the temperature of 70 DEG C.Wherein, scavenging solution is added to the water obtained by ammonium acetate, acetic acid, and in scavenging solution, the massfraction of ammonium acetate is 20%, and the massfraction of acetic acid is 7%.
The zinc ingot metal mould completing cleaning is taken out, then cleans with water, and oiling is antirust.Because fouling structure is very fine and close, hard, be difficult to remove with the physical method of machinery, and likely infringement produced to mould.The present invention takes chemically treated method, effectively removes layer of scale, and does not produce any damage to mould, and process rear mold is sparkling clean, has been applied in actual production.
Claims (4)
1. the method for cleaning of zinc ingot metal mould in zinc hydrometallurgy, is characterized in that: be put in container by zinc ingot metal Mould Code, then in container, adds scavenging solution, make scavenging solution submergence zinc ingot metal mould, then clean at higher than the temperature of 70 DEG C, until when scavenging solution bubble-free is emerged, complete cleaning; Wherein, scavenging solution is added to the water obtained by ammonium acetate, acetic acid;
In described scavenging solution, the massfraction of ammonium acetate is 8% ~ 20%, and the massfraction of acetic acid is 2% ~ 10%;
The described time completing cleaning is 6 ~ 8 hours.
2. the method for cleaning of zinc ingot metal mould in a kind of zinc hydrometallurgy according to claim 1, is characterized in that, the described temperature higher than 70 DEG C realizes by passing into steam in container.
3. the method for cleaning of zinc ingot metal mould in a kind of zinc hydrometallurgy according to claim 1, it is characterized in that, described container is stainless steel vessel.
4. the method for cleaning of zinc ingot metal mould in a kind of zinc hydrometallurgy according to claim 1, it is characterized in that, the zinc ingot metal mould completing cleaning also cleans with water.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310401318.6A CN103526214B (en) | 2013-09-05 | 2013-09-05 | The method for cleaning of zinc ingot metal mould in a kind of zinc hydrometallurgy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310401318.6A CN103526214B (en) | 2013-09-05 | 2013-09-05 | The method for cleaning of zinc ingot metal mould in a kind of zinc hydrometallurgy |
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| Publication Number | Publication Date |
|---|---|
| CN103526214A CN103526214A (en) | 2014-01-22 |
| CN103526214B true CN103526214B (en) | 2015-12-09 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1444517A (en) * | 2000-10-11 | 2003-09-24 | 日本碳化物工业株式会社 | Resin composition for mold cleaning |
| CN101054546A (en) * | 2007-05-15 | 2007-10-17 | 重庆大学 | Mold cleaner and method of cleaning extrusion die for magnesium alloy using the same |
| CN101955858A (en) * | 2009-07-17 | 2011-01-26 | 日东电工株式会社 | Die cleaning agent composition and mould cleaning material and the mould cleaning method that uses it |
-
2013
- 2013-09-05 CN CN201310401318.6A patent/CN103526214B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1444517A (en) * | 2000-10-11 | 2003-09-24 | 日本碳化物工业株式会社 | Resin composition for mold cleaning |
| CN101054546A (en) * | 2007-05-15 | 2007-10-17 | 重庆大学 | Mold cleaner and method of cleaning extrusion die for magnesium alloy using the same |
| CN101955858A (en) * | 2009-07-17 | 2011-01-26 | 日东电工株式会社 | Die cleaning agent composition and mould cleaning material and the mould cleaning method that uses it |
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|---|---|
| CN103526214A (en) | 2014-01-22 |
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