CN102234824A - Method for improving copper dissolving efficiency by using oxygen rich waste acid gas of electrolytic copper foil - Google Patents
Method for improving copper dissolving efficiency by using oxygen rich waste acid gas of electrolytic copper foil Download PDFInfo
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- CN102234824A CN102234824A CN2011101218202A CN201110121820A CN102234824A CN 102234824 A CN102234824 A CN 102234824A CN 2011101218202 A CN2011101218202 A CN 2011101218202A CN 201110121820 A CN201110121820 A CN 201110121820A CN 102234824 A CN102234824 A CN 102234824A
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- copper
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- copper foil
- molten copper
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Abstract
The invention discloses a method for improving copper dissolving efficiency by using oxygen rich waste acid gas of an electrolytic copper foil, aims to provide a method for improving copper dissolving efficiency by returning oxygen rich waste acid gas produced in the copper foil electrolysis process to a copper dissolving tower, and belongs to the technical field of metal dissolution. According to the method, after the oxygen rich waste acid gas generated in the electrolytic copper foil production process is collected, the oxygen rich waste acid gas is directly introduced into the copper dissolving tower through a delivery pipeline and used as an oxygen source or a partial oxygen source for dissolving copper. By the method, the oxygen rich waste acid gas is effectively utilized, the waste is changed into valuable, the dissolving speed of metallic copper is quickened, the production cost of the copper foil is reduced, the production efficiency is improved, the energy is saved, and the environment is protected.
Description
Technical field
The present invention relates to a kind of molten copper method, relate in particular to the method that a kind of oxygen enrichment spent acid gas that utilizes electrolytic copper foil improves molten copper efficient, belong to the dissolving metal technical field.
Background technology
The electrolytic solution preparation is also referred to as molten copper process, is first procedure that electrolytic copper foil is produced, and purpose is that the electrolysis copper coin is dissolved into copper-bath.Metallic copper and sulphuric acid soln contact with oxygen and are keeping under 60 ℃ of temperature condition, make the metallic copper dissolving form copper-bath, flow out to the solution Lower tank from the sieve plate hole of molten copper tower.Metallic copper generates cupric oxide with the oxygen reaction in 60 ℃ sulphuric acid soln, cupric oxide and sulfuric acid reaction generate copper sulfate afterwards, therefore imports the dissolving that 32 ℃ of oxygen enrichments extremely help copper.Be that the air in workshop is imported in the molten copper tower at present.Discharge through acid mist scavenging tower place afterwards.
The anode material of electrolytic copper foil production-scale cell is pure titanium plate, and the anode working face is that titanium plate surface is coated with tridium-base alloy.When electrolyzer was produced, cupric ion was separated out into Copper Foil at the titanium cathode surface under galvanic action, reaction formula: Cu
2++ 2e → Cu; Anode is no solute reaction, only analyses oxygen, puts oxygen reaction, reaction formula: 2H
2O+2SO
4 2--4e=2H
2SO
4+ O
2The oxygen that anode produces overflows temperature when being 50 ℃ solution, is attaching sulfuric acid molecule, water molecules and cupric ion on the bubble and is forming about 30～35 ℃ hot gas.Because the temperature of solution is 50 ℃ in the electrolyzer, a large amount of water vapors must be arranged, contain sulfuric acid molecule and cupric ion in the water vapor equally.10,000 grades of purification conditions of Copper Foil production plant api request are so must have these gas of pollution to discharge outdoor.When discharging these obnoxious flavoures, also the part air in the workshop is discharged, reach the purpose of changing workshop air with blower fan.These gases mix and have formed in the electrolytic copper foil production process 32 ℃ oxygen enrichment spent acid gas, and present this oxygen enrichment spent acid gas sucks with vacuum fan and is discharged in the atmosphere after the acid mist scavenging tower purifies, and environment is caused certain harm.
The winter air temperature is lower, sometimes even subzero, low like this air, enter in the molten copper tower, can reduce the temperature in the molten copper tower greatly, and molten copper must remain on 60 ℃ temperature, have a strong impact on molten copper speed thus, even can Yin Wendu lowly cause cupric sulphate crystal, cause and to produce.
Summary of the invention
At above-mentioned deficiency, the technical problem to be solved in the present invention is that a kind of method of the molten copper efficient of raising of recycle oxygen enrichment spent acid gas is provided.
Technical scheme of the present invention is such: a kind of oxygen enrichment spent acid gas that utilizes electrolyzer to produce improves the method for molten copper efficient, this method is after the generation oxygen enrichment spent acid gas in the electrolytic copper foil production process is collected, directly feed in the molten copper tower by transport pipe, as the oxygen source or the part oxygen source of molten copper.
The above-mentioned oxygen enrichment spent acid gas that utilizes electrolyzer to produce improves the method for molten copper efficient, and described molten copper tower is the molten copper tower of spray-type.
The above-mentioned oxygen enrichment spent acid gas that utilizes electrolytic copper foil improves the method for molten copper efficient, and described transport pipe is PVC material insulation transport pipe.
Further, the above-mentioned oxygen enrichment spent acid gas that utilizes electrolyzer to produce improves the method for molten copper efficient, and described transport pipe directly feeds oxygen enrichment spent acid gas the bottom in the molten copper tower.
The above-mentioned oxygen enrichment spent acid gas that utilizes electrolytic copper foil improves the method for molten copper efficient, 30～35 ℃ of the temperature when described oxygen enrichment spent acid gas enters molten copper tower.
With the prior art ratio, the present invention has following advantage:
1, oxygen enrichment spent acid gas directly feeds in the molten bronze, brass or copper ware by the transport pipe of band insulation, accelerates the dissolution rate of metallic copper, helps Copper Foil production, enhances productivity energy efficient;
2, effectively utilize oxygen enrichment spent acid gas, turn waste into wealth, be beneficial to environment protection.
Description of drawings
Fig. 1 is a molten bronze, brass or copper ware structural representation used in the present invention.
Wherein: molten copper tower 1 sieve plate 2 showers 3 exhaust emission tubes 4 reservoirs 5 solution vent pipes 6 copper cash 7.
Embodiment
The present invention will be further described below in conjunction with specific embodiment, but do not constitute any limitation of the invention.
Embodiment 1
Consult Fig. 1, at normal temperatures, to capacity 88m
3(actual useful capacity is 70m
3) the molten copper tower 1 of spray-type in pack into the copper cash 7 of 40～50t, by PVC material insulation transport pipe, from sieve plate 2 times to molten copper tower 1 feed 0.1mPa collected 30 ℃ of oxygen enrichment spent acid gas, oxygen contact condition in raw material copper cash and the oxygen enrichment spent acid gas, make copper line surface be in the state of oxidation always, because the oxygen level of molten copper tower 1 has increased about 3% than the oxygen level of direct bubbling air, helps the generation of cupric oxide like this; Copper sulfate solution is sprayed on copper cash 7 from molten copper tower 1 top by shower 3 with pump, copper sulfate solution alternately contacts on copper cash 7 surfaces with oxygen enrichment spent acid gas, reaction generates copper sulfate in people's copper sulfate solution, flow into reservoir 5 by the sieve plate 2 of molten copper tower bottom from the top down with copper sulfate solution afterwards, flow to the low level jar by solution vent pipe 6, cat head exhaust emission tube 4 is collected the oxygen enrichment spent acid gas that is produced, recycle.Because the exhausting amount of acid mist exhausting of giving birth to the paper tinsel workshop is greater than original molten copper tower air output, and avoid direct bubbling air to cause the reduction of temperature, therefore accelerated the speed of molten copper.
Consult Fig. 1, at normal temperatures, to capacity 88m
3(actual useful capacity is 70m
3) the molten copper tower 1 of spray-type in pack into the copper cash 7 of 40～50t, by PVC material insulation transport pipe, from sieve plate 2 times to molten copper tower 1 feed 0.05mPa collected 35 ℃ of oxygen enrichment spent acid gas and the air of 0.05mPa, oxygen contact condition in raw material copper cash and the oxygen enrichment spent acid gas, make copper line surface be in the state of oxidation always, because the oxygen level of molten copper tower 1 has increased about 2% than the oxygen level of direct bubbling air, helps the generation of cupric oxide like this; Copper sulfate solution is sprayed on copper cash 7 from molten copper tower 1 top by shower 3 with pump, copper sulfate solution alternately contacts on copper cash 7 surfaces with oxygen enrichment spent acid gas, reaction generates copper sulfate in people's copper sulfate solution, flow into reservoir 5 by the sieve plate 2 of molten copper tower bottom from the top down with copper sulfate solution afterwards, flow to the low level jar by solution vent pipe 6, cat head exhaust emission tube 4 is collected the oxygen enrichment spent acid gas that is produced, recycle.Because the exhausting amount of acid mist exhausting of giving birth to the paper tinsel workshop is greater than original molten copper tower air output, and avoid direct bubbling air to cause the reduction of temperature, therefore accelerated the speed of molten copper.
Compared with prior art, the method for utilizing the molten copper of oxygen enrichment spent acid gas of electrolytic copper foil provided by the present invention has following benefit to production:
1, improve the production capital utilization ratio: after feeding production Copper Foil oxygen enrichment spent acid gas, improved molten copper speed, end copper amount (the solid-state copper storage capacity of the metal of instant copper tower) can reduce about 10t.When not feeding oxygen originally, the copper amount is 50～60t at the bottom of its molten copper tower, improves the fund utilization rate in producing like this.
2, reduce the production system energy consumption: by feeding the oxygen enrichment spent acid gas in living paper tinsel workshop, can save an air compressor (frequency is 15Kw) of giving molten copper tower air feed, can save about 10800 degree electricity/moons of power consumption thus.
3, reduced the loss of copper: the cupric ion in the acid gas in the former scheme is regularly discharged solution as liquid waste disposal then by directly staying after purifying in the pond of scavenging tower.Now owing to, just reduced the link that copper runs off by directly being dissolved in the molten copper tower behind the molten copper tower.
4, need not reduce energy consumption to molten copper Tata heating winter, save a large amount of electricity charge.
Claims (5)
1. an oxygen enrichment spent acid gas that utilizes electrolytic copper foil improves the method for molten copper efficient, it is characterized in that, this method is after the generation oxygen enrichment spent acid gas in the electrolytic copper foil production process is collected, directly to feed in the molten copper tower by transport pipe, as the oxygen source or the part oxygen source of molten copper.
2. the oxygen enrichment spent acid gas that utilizes electrolytic copper foil according to claim 1 improves the method for molten copper efficient, it is characterized in that described molten copper tower is the molten copper tower of spray-type.
3. the oxygen enrichment spent acid gas that utilizes electrolytic copper foil according to claim 1 improves the method for molten copper efficient, it is characterized in that, described transport pipe is a PVC material insulation transport pipe.
4. the oxygen enrichment spent acid gas that utilizes electrolytic copper foil according to claim 2 improves the method for molten copper efficient, it is characterized in that described transport pipe directly feeds oxygen enrichment spent acid gas the bottom in the molten copper tower.
5. the oxygen enrichment spent acid gas that utilizes electrolytic copper foil according to claim 1 improves the method for molten copper efficient, it is characterized in that 30～35 ℃ of the temperature when described oxygen enrichment spent acid gas enters molten copper tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101218202A CN102234824A (en) | 2011-05-06 | 2011-05-06 | Method for improving copper dissolving efficiency by using oxygen rich waste acid gas of electrolytic copper foil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101218202A CN102234824A (en) | 2011-05-06 | 2011-05-06 | Method for improving copper dissolving efficiency by using oxygen rich waste acid gas of electrolytic copper foil |
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| CN102234824A true CN102234824A (en) | 2011-11-09 |
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| CN2011101218202A Pending CN102234824A (en) | 2011-05-06 | 2011-05-06 | Method for improving copper dissolving efficiency by using oxygen rich waste acid gas of electrolytic copper foil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313653A (en) * | 2014-09-22 | 2015-01-28 | 梅县金象铜箔有限公司 | Method for preparing electrolyte for copper foil electrolysis by using regenerated copper oxide |
| CN111349949A (en) * | 2020-04-03 | 2020-06-30 | 广东嘉元科技股份有限公司 | Liquid making device for producing electrolytic copper foil |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4324623A (en) * | 1980-01-12 | 1982-04-13 | Koito Seisakusho Co. Ltd. | Method and apparatus for replenishing an electroplating bath with metal to be deposited |
-
2011
- 2011-05-06 CN CN2011101218202A patent/CN102234824A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4324623A (en) * | 1980-01-12 | 1982-04-13 | Koito Seisakusho Co. Ltd. | Method and apparatus for replenishing an electroplating bath with metal to be deposited |
Non-Patent Citations (3)
| Title |
|---|
| 任中文等: "谈一谈溶铜生产中几个被误解的问题", 《覆铜板资讯》 * |
| 张允诚等: "《电镀手册》", 31 January 2007, 国防工业出版社 * |
| 李坚强等: "电解铜箔透光点产生原因分析", 《印制电路信息》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313653A (en) * | 2014-09-22 | 2015-01-28 | 梅县金象铜箔有限公司 | Method for preparing electrolyte for copper foil electrolysis by using regenerated copper oxide |
| CN111349949A (en) * | 2020-04-03 | 2020-06-30 | 广东嘉元科技股份有限公司 | Liquid making device for producing electrolytic copper foil |
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Application publication date: 20111109 |