CN1264757A - Equipment and method for dissolving copper in step of producing raw liquid with electrolytic copper foil - Google Patents
Equipment and method for dissolving copper in step of producing raw liquid with electrolytic copper foil Download PDFInfo
- Publication number
- CN1264757A CN1264757A CN00114344A CN00114344A CN1264757A CN 1264757 A CN1264757 A CN 1264757A CN 00114344 A CN00114344 A CN 00114344A CN 00114344 A CN00114344 A CN 00114344A CN 1264757 A CN1264757 A CN 1264757A
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- liquid
- gas
- solution
- copper
- equipment
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- 239000007788 liquid Substances 0.000 title claims abstract description 58
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 239000010949 copper Substances 0.000 title claims abstract description 42
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000011889 copper foil Substances 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 230000001502 supplementing effect Effects 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 238000004945 emulsification Methods 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000000839 emulsion Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 5
- 239000001301 oxygen Substances 0.000 abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 abstract description 5
- 238000001704 evaporation Methods 0.000 abstract description 4
- 230000008020 evaporation Effects 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 3
- 230000001590 oxidative effect Effects 0.000 abstract description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 4
- 239000007921 spray Substances 0.000 abstract 2
- 239000000243 solution Substances 0.000 description 22
- 238000006243 chemical reaction Methods 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000005507 spraying Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- -1 hydrogen ions Chemical class 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 230000001706 oxygenating effect Effects 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Electrolytic Production Of Metals (AREA)
Abstract
A method for dissolving copper in raw liquid used in production of electrolytic copper foils features that liquid-gas spray pump is used to oxygenate the solution for the emulsified mix betwen solution and air or oxygen and effectively increasing the oxidizing potential of chemicaliraction in solution, resulting in higher speed of dissolving copper in diluted sulfuric acid, increased by 8 times or more. Its equipment is composed of reactor cavity, liquid-gas spray pump, gas-liquid separator and circulating pump. The micro gas bubble layer with lower acidity is used to cover the surface, preventing the evaporation of sulfuric acid and solution, increasing output rate of copper and improving environment.
Description
The invention relates to copper dissolving equipment and a method for a liquid production process in the production process of electrolytic copper foil.
Before the present invention is proposed, it is known that dissolving electrolytic copper or metallic copper conforming to the production quality requirements of electrolytic copper foil in an electrolytic solution is the first step in the production of electrolytic copper foil. Due to Cu2+The standard electrode potential of the/Cu is 0337V, and the H in the solution cannot be replaced by the elemental copper under the general condition2SO4The hydrogen ions are dissolved in the solution. In order to achieve the dissolution of metallic copper, an oxidative leaching method is generally adopted:
the ① -type reaction is realized by adopting a reverse ventilation spraying method at home and abroad at present, and corresponding matched equipment is a low-temperature spraying copper dissolving tank, the copper dissolving method has the defects that the copper dissolving speed is low, the copper dissolving capacity per cubic meter of effective working volume is only about 1.5 Kg/hour, in order to achieve a certain yield, huge process equipment has to be used, and a large amount of mobile capital and factory sites are occupied, the spraying method generally adopts low-temperature (60-65 ℃) copper dissolving, and the low-temperature condition is unfavorable for improving the chemical reaction speed according to the chemical reaction kinetics principle.
The invention aims to provide an oxygenating method and configuration equipment of a liquid-gas jet pump, which effectively enlarge a gas-liquid contact interface, improve the oxidation potential of a solution, lead the copper dissolving capacity to reach more than 15Kg per cubic meter per hour and lead the utilization rate of oxygen in air to be close to 50 percent. The air amount blown in is greatly reduced, the heat loss of solution evaporation is inhibited, and the heat energy generated by the chemical reaction of the dissolved copper is enough to maintain the reaction at 80-85 ℃.
The specific technical scheme for realizing the invention is that the main components of the copper dissolving equipment are a system consisting of a reactor cavity, a liquid-gas jet pump, a gas-liquid separator and a circulating pump.
The equipment is provided with a reactor body with a false bottom, a containing cavity for containing copper materials and dissolving copper for chemical reaction is arranged above the false bottom, a liquid level controller is arranged on the reactor, and a large cover, a feeding hole, a condenser, a chimney, a solid-liquid separator and related pipeline parts are arranged at the upper part of the reactor. A baffling plate, a gas-liquid separator and a temperature-regulating coil (or a jacket) are arranged below the false bottom of the reactor. The inlet of the circulating pump is communicated with the bottom of the gas-liquid separation chamber, the outlet of the circulating pump is provided with a pipeline connected with the liquid-gas jet pump, and the outlet of the liquid-gas jet pump is communicated between the false bottom and the baffle plate.
The copper dissolving method for electrolytic copper foil production raw liquid process is to set metal copper inside the reactor cavity with electrolytic copper, pump the solution from the bottom of the gas separator with the circulating pump and send the solution into the liquid-gas spraying pump for mixing and emulsifying the gas and liquid, and the emulsified liquid enters the reactor cavity via the baffle and the false bottom. The high-speed self-heating copper dissolving is realized, the solution with less gas content is returned to the circulating pump after the residual gas is released in the gas-liquid separator, and the circulation of the solution in the equipment is realized.
In order to facilitate the normal operation and maintenance of equipment, a valve is arranged on an inlet pipe of a circulating pump in the design, and a drain valve and a flow valve are arranged on an outlet pipe; the front end of the liquid level controller is provided with a solid-liquid separator, and the lower end of the chimney is provided with a condenser and a liquid supplementing port; the gas-liquid separator is provided with a temperature regulating coil (or a jacket), and the equipment reactor cavity is provided with auxiliary components such as a thermometer and the like.
Compared with the existing low-temperature spraying copper dissolving (tank) method, the method has obvious advantages.
a. The liquid-gas jet pump is adopted for oxygenation, the utilization rate of oxygen is improved to more than 40% by gas-liquid emulsification mixing, and heat loss caused by evaporation of the solution due to the introduction of excessive air is avoided. Since the air consumption is small, the air is not generally subjected to a filtering treatment.
b. Free H in solution2SO4The concentration has little influence on the copper dissolving capacity of the equipment, can realize low-acidity (such as 20g/l) operation, and is beneficial to the selection of equipment materials.
c. The equipment for realizing the invention is essentially universal equipment for gas-liquid-solid, gas-liquid, liquid-liquid and other multiphase reactions, is widely suitable for various chemical reaction processes of hydrometallurgy and chemical industry and plays a role in strengthening. When pure oxygen or designated gas or inert gas is used as a stirring medium in a chemical reaction, the air inlet of the device is directly introduced into the space above the liquid level of the upper part of the reactor cavity and below the large cover, and the device can realize sealed operation after water seal treatment of the related pipe orifice.
The method and structure of the present invention are further described below with reference to the accompanying drawings. FIG. 1 is a structural diagram of a copper dissolving apparatus according to the present invention, and FIG. 2 is a schematic structural diagram of an embodiment of the present invention. The reference numerals in figures 1 and 2 are identical. (1) A bottom valve (2), a gas-liquid separator (3), a coil (jacket) (4), a baffling disc (5), a false bottom (6), an expansion pipe (7), a reactor chamber (8), a liquid level controller (9), a thermometer (10), a condenser (11), a liquid supplementing port (12), a chimney (13), a nozzle (14), an air inlet (15), a solid-liquid separator (16), a flow valve (17), a feeding port (18), a water pump water outlet pipe (19), a liquid-gas jet pump (20), a liquid discharging valve (21), a water pump inlet pipe (22), a circulating pump (23), and a support seat (23)
The equipment operates as follows:
putting a copper material into the reactor cavity (7), and injecting electrolyzed liquid; starting a circulating pump (22), sucking the solution from the bottom of the gas-liquid separator (2) by the circulating pump, pressurizing the solution and then entering a liquid-gas jet pump (19) through a pipeline (18); in the jet pump, the solution is sprayed out from the nozzle (13) at a speed of more than twenty meters per second to form a low-pressure area, so that the solution carries atmosphere (or oxygen) to enter a jet pump mixing pipe together, due to the crushing action of high-speed impact, the mixture of the gas and the electrolyte is immediately in an emulsified mixed state, and the emulsified gas-liquid mixed solution enters a reactor accommodating cavity (7) through an expansion pipe (6), a baffling disc (4), a false bottom (5) and an emulsified gas-liquid mixed solution, and due to the strong stirring action of the gas and the supersaturated oxygen in the solution, the action of improving the oxidation potential of the solution is achieved, the dynamic and thermodynamic conditions of the enhanced chemical reaction are fully met, and the copper dissolution speed is improved. Residual gas after participating in the chemical reaction is gradually gathered in the upward moving process, the foam state is still maintained when the residual gas reaches the liquid surface, and a liquid surface covering layer of a foam continuous phase is formed on the liquid surface, so that the effects of inhibiting the evaporation of the solution and protecting the environment are achieved.
The solution with reduced gas content moves downwards into the gas-liquid separator (2), and after being relatively static, the residual gas is released and then returns to the inlet of the circulating pump, so that the continuous work of the water pump is realized.
The equipment condenser (10) can further recover H in the waste gas2SO4The exhaust gas contains H2SO4Less than 60mg/m3. Meanwhile, the heat energy in the waste gas can be recovered, and the heat balance of the system is met. The condenser is provided with a liquid supplementing pipe orifice (11) for continuously supplementing liquid and keeping the equipment continuously running.
The solid-liquid separator (15) of the device can separate copper powder and copperparticles flowing along with the solution, and the burden of the next treatment of the solution after copper dissolution is reduced.
The liquid level controller (8) of the device is used for adjusting the liquid discharge speed and keeping the liquid level in the reactor at a proper position all the time.
The other parts of the apparatus function as follows:
the drain valve (20) is used for quickly draining liquid in the tank body during production stoppage and maintenance;
the bottom valve (1) is used for draining the solution in the tank body and cleaning equipment;
the water pump inlet pipe valve (21) is used for intercepting the circulation pump during maintenance;
water pump flow valve (16) -for capacity regulation;
air inlet (14) -for air, oxygen-enriched air or pure ammonia;
thermometer (9) -for displaying or controlling the reaction temperature;
coil (jacket) (3) -for the regulation of the reaction temperature.
The embodiment of the invention comprises the following steps:
electrolytic copper is used as raw material to produce 18 μm galvanized copper foil in a certain factory, the technology is used in the finishing process, the electrolytic copper raw material is cut into strips of 810 x 20 x 10 (mm) and put into a reactor, and the composition of the copper dissolving liquid is as follows: h2SO4110g/l，Cu2+18g/l, and the first startup is assisted to raise the temperature to 80-85 ℃. Copper-dissolved solution H2SO438g/l，Cu2+84g/l, the copper dissolving speed reaches 12.5Kg/m3H, the power consumption is less than 400kw.h/1000kg (Cu), and the continuous production does not need auxiliary heating.
The equipment can be made of acid-resistant stainless steel, industrial pure titanium or engineering plastics and other materials.
Claims (3)
1. A copper dissolving method for a raw liquid production procedure of electrolytic copper foil is characterized in that metal copper is placed in a reactor cavity (7) filled with electrolytic copper, a circulating pump (22) pumps a solution from the bottom of a gas separator (2) and sends the solution into a liquid-gas jet pump (19), air is sucked into the jet pump (19) by utilizing the pressure reduction effect of high-speed liquid flow of a jet pump nozzle to achieve gas-liquid emulsification and mixing, the emulsion enters the reactor cavity (7) through a baffling disc (4) and a false bottom (5) to achieve high-speed and self-heating copper dissolving, and the solution with less gas content returns to the circulating pump (22) after releasing residual gas in the gas-liquid separator (2) to achieve circulation of the solution in equipment.
2. A copper dissolving device for a raw liquid production procedure of electrolytic copper foil comprises a reactor cavity (7), a liquid-gas jet pump (19), a gas-liquid separator (2) and a circulating pump (22). The device is characterized in that an inlet of a circulating pump is communicated with a gas-liquid separator (2), an outlet of the circulating pump is communicated with an inlet of a liquid-gas jet pump (19), an outlet of the liquid-gas jet pump (19) is communicated with a false bottom (5) at the lower part of a reactor cavity, and the lower part of a reactor cavity (7) is communicated with the gas-liquid separator (2).
3. The copper dissolving equipment and the method for the raw liquid production process of the electrolytic copper foil according to the claims 1 and 2 are characterized in that a valve is arranged on an inlet pipe (21) of a circulating pump (22), a liquid discharge valve (20) and a flow valve (16) are arranged on an outlet pipe (18), a solid-liquid separator (15) is arranged at the front end of a liquid level controller (8), a condenser (10) and a liquid supplementing port (11) are arranged at the lower end of a chimney (12), a temperature regulating coil (or a jacket) (3) is arranged on a gas-liquid separator (2), and auxiliary components such as a thermometer and the like are arranged on an equipment reactor chamber (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001143441A CN1200145C (en) | 2000-01-26 | 2000-01-26 | Equipment and method for dissolving copper in step of producing raw liquid with electrolytic copper foil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001143441A CN1200145C (en) | 2000-01-26 | 2000-01-26 | Equipment and method for dissolving copper in step of producing raw liquid with electrolytic copper foil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1264757A true CN1264757A (en) | 2000-08-30 |
| CN1200145C CN1200145C (en) | 2005-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001143441A Expired - Lifetime CN1200145C (en) | 2000-01-26 | 2000-01-26 | Equipment and method for dissolving copper in step of producing raw liquid with electrolytic copper foil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1200145C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102517612A (en) * | 2012-01-12 | 2012-06-27 | 梅县金象铜箔有限公司 | Method for preparing copper electrolyte |
| CN102531029A (en) * | 2010-12-30 | 2012-07-04 | 东莞华威铜箔科技有限公司 | Method for melting copper at low temperature and copper melting device |
| CN104047045A (en) * | 2014-06-30 | 2014-09-17 | 中色奥博特铜铝业有限公司 | Circulating dissolved copper solution preparation device and method for calendered copper-foil copper plating process |
| CN104562082A (en) * | 2014-11-21 | 2015-04-29 | 大连鑫恒环保科技有限公司 | Method for preparing copper-containing solution by dissolving waste copper |
| CN109608327A (en) * | 2019-01-04 | 2019-04-12 | 武汉稀源汇冶金科技有限公司 | A kind of method and microbubble oxidation trough of microbubble oxidation production copper acetate |
| CN111850603A (en) * | 2020-07-08 | 2020-10-30 | 珠海格力绿色再生资源有限公司 | Recovery device and recovery method for oil-containing copper sludge |
| CN113441066A (en) * | 2021-06-01 | 2021-09-28 | 常州大学 | Method for quickly dissolving copper in electrolytic copper foil manufacturing process |
-
2000
- 2000-01-26 CN CNB001143441A patent/CN1200145C/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102531029A (en) * | 2010-12-30 | 2012-07-04 | 东莞华威铜箔科技有限公司 | Method for melting copper at low temperature and copper melting device |
| CN102517612A (en) * | 2012-01-12 | 2012-06-27 | 梅县金象铜箔有限公司 | Method for preparing copper electrolyte |
| CN104047045A (en) * | 2014-06-30 | 2014-09-17 | 中色奥博特铜铝业有限公司 | Circulating dissolved copper solution preparation device and method for calendered copper-foil copper plating process |
| CN104562082A (en) * | 2014-11-21 | 2015-04-29 | 大连鑫恒环保科技有限公司 | Method for preparing copper-containing solution by dissolving waste copper |
| CN104562082B (en) * | 2014-11-21 | 2017-05-10 | 大连鑫恒环保科技有限公司 | Method for preparing copper-containing solution by dissolving waste copper |
| CN109608327A (en) * | 2019-01-04 | 2019-04-12 | 武汉稀源汇冶金科技有限公司 | A kind of method and microbubble oxidation trough of microbubble oxidation production copper acetate |
| CN111850603A (en) * | 2020-07-08 | 2020-10-30 | 珠海格力绿色再生资源有限公司 | Recovery device and recovery method for oil-containing copper sludge |
| CN111850603B (en) * | 2020-07-08 | 2021-11-23 | 珠海格力绿色再生资源有限公司 | Recovery device and recovery method for oil-containing copper sludge |
| CN113441066A (en) * | 2021-06-01 | 2021-09-28 | 常州大学 | Method for quickly dissolving copper in electrolytic copper foil manufacturing process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1200145C (en) | 2005-05-04 |
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Owner name: WUHAN XINXING COPPER METALLURGY EQUIPMENT TECHNOLO Free format text: FORMER OWNER: WEI MINGXING Effective date: 20121127 |
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Free format text: CORRECT: ADDRESS; FROM: 430063 WUHAN, HUBEI PROVINCE TO: 430076 WUHAN, HUBEI PROVINCE |
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Effective date of registration: 20121127 Address after: 430076, No. 55, Tang Jia village, flower Town, Hongshan District, Hubei, Wuhan Patentee after: Wuhan Xinxing copper smelting equipment Technology Co., Ltd. Address before: 430063, room 7, 221 Yuan Yi Yuan Residential District, Xu Dong Road, Hubei, Wuhan Patentee before: Wei Mingxing |
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Granted publication date: 20050504 |