CN109097816B - Copper dissolving device and copper dissolving method thereof - Google Patents
Copper dissolving device and copper dissolving method thereof Download PDFInfo
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- CN109097816B CN109097816B CN201811185336.4A CN201811185336A CN109097816B CN 109097816 B CN109097816 B CN 109097816B CN 201811185336 A CN201811185336 A CN 201811185336A CN 109097816 B CN109097816 B CN 109097816B
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- dissolving tank
- copper dissolving
- copper
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- pipe
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 339
- 239000010949 copper Substances 0.000 title claims abstract description 335
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 335
- 238000000034 method Methods 0.000 title abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 59
- 239000002253 acid Substances 0.000 claims abstract description 48
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 239000007921 spray Substances 0.000 claims abstract description 14
- 230000001502 supplementing effect Effects 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 238000004090 dissolution Methods 0.000 claims description 30
- 239000003595 mist Substances 0.000 claims description 24
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 239000006260 foam Substances 0.000 claims description 13
- 238000005192 partition Methods 0.000 claims description 13
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 12
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 6
- 239000005751 Copper oxide Substances 0.000 claims description 6
- 229910000431 copper oxide Inorganic materials 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 238000011978 dissolution method Methods 0.000 claims 2
- 238000004134 energy conservation Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000011889 copper foil Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/12—Process control or regulation
- C25D21/14—Controlled addition of electrolyte components
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/38—Electroplating: Baths therefor from solutions of copper
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Automation & Control Theory (AREA)
- Manufacture And Refinement Of Metals (AREA)
- ing And Chemical Polishing (AREA)
Abstract
The invention relates to a copper dissolving device and a copper dissolving method thereof, wherein the copper dissolving device comprises a copper dissolving tank, an air filtering device and an acid-resistant circulating pump; the top end of the copper dissolving tank is provided with a feed inlet, and the inner side of the copper dissolving tank is provided with a liquid inlet distributor and an inner sleeve; a copper dissolving tank cover is arranged at the material inlet in a sealing manner; a copper dissolving tank lower end socket is arranged on the inner side of the lower end of the inner sleeve, and a copper dissolving tank baffle is arranged on the top end of the copper dissolving tank lower end socket; the side wall of the copper dissolving tank is provided with an overflow hole of the copper dissolving tank; a copper dissolving tank central tube is arranged in the copper dissolving tank; a flow shielding plate is arranged at the lower end part of the central tube of the copper dissolving tank; the tank walls at two opposite sides of the copper dissolving tank are sequentially provided with a copper dissolving tank overflow pipe, a copper dissolving tank liquid supplementing pipe and a copper dissolving tank exhaust pipe from bottom to top; the air filtering device is arranged in the upper end of the central tube of the copper dissolving tank; the input end of the acid-resistant circulating pump is connected with a liquid inlet distributor, and the output end of the acid-resistant circulating pump is connected with a liquid inlet pipe of a copper dissolving tank; the liquid inlet pipe of the copper dissolving tank extends into the central pipe of the copper dissolving tank and is provided with a liquid spray head. The invention has simple structure, convenient operation and use, energy conservation and environmental protection.
Description
Technical Field
The invention relates to an electrolytic copper foil production process, in particular to a copper dissolving device and a copper dissolving method thereof.
Background
Copper sulfate is a main raw material in the production of electrolytic copper foil, and copper dissolution is a first process in the production of electrolytic copper foil, which is a very key and important link, and whether copper dissolution is normal or not directly relates to whether the production of electrolytic copper foil can be stably operated or not.
The copper dissolving process is to uniformly distribute raw copper plates or copper wires in a copper dissolving container to perform chemical reaction with sulfuric acid in the added sulfuric acid solution and oxygen in the air, so that the raw copper plates or copper wires are dissolved into a copper sulfate solution. The prior copper dissolving process mainly uses high-temperature soaking type copper dissolving and low Wen Penlin type copper dissolving, a large amount of steam is needed to heat the solution in the copper dissolving tank, the temperature is required to be kept above 70 ℃, and a high-power air compressor is needed to blow air into the copper dissolving tank, so that the copper dissolving cost is high; the low Wen Penlin copper dissolution requires a large amount of air to improve the copper dissolution speed, the acid mist treatment capability is required to be high, and the air inlet is easy to crystallize due to low temperature at the air inlet position.
Disclosure of Invention
Aiming at the problems in the background technology, the invention provides an energy-saving, low-pollution and easy-to-operate copper dissolving device and a copper dissolving method thereof.
The technical scheme of the invention is as follows:
the copper dissolving device comprises a copper dissolving tank, an air filtering device and an acid-resistant circulating pump;
a feeding port is arranged at the top end of the copper dissolving tank, and a liquid inlet distributor is arranged at the inner side of the bottom end; the copper dissolving tank is provided with a copper dissolving tank cover matched with a sealing cover at the feeding port;
an inner sleeve is also arranged on the inner side of the copper dissolving tank in a matching way, and the upper end and the lower end of the inner sleeve are communicated with the inner cavity of the copper dissolving tank; the inner side of the lower end of the inner sleeve is provided with a copper dissolving tank lower seal head in a matching way, the top end of the copper dissolving tank lower seal head is provided with a copper dissolving tank baffle plate, and the outer edge of the top end is in sealing connection with the inner wall of the inner sleeve; the outer wall of the bottom end of the inner sleeve is separated from the inner wall of the copper dissolving tank, and the top end of the inner sleeve is connected with the inner wall of the upper end of the copper dissolving tank after being outwards turned and extended along the circumferential direction, so that an overflow cavity is formed between the inner wall of the copper dissolving tank and the outer wall of the inner sleeve; the side wall of the copper dissolving tank corresponding to the uppermost end of the overflow cavity is provided with an overflow hole of the copper dissolving tank;
a central tube of the copper dissolving tank is vertically arranged in the center of the copper dissolving tank; the upper end of the copper dissolving tank central tube extends out of the material feeding opening and is provided with an air inlet, the lower end of the copper dissolving tank central tube penetrates through the copper dissolving tank partition plate and extends into the inner cavity of the copper dissolving tank lower seal head, and the end part of the copper dissolving tank central tube is also provided with a flow shielding plate in a matching manner;
the copper dissolving tank is provided with a copper dissolving tank overflow pipe and a copper dissolving tank liquid supplementing pipe on tank walls on two opposite sides above the inner sleeve respectively; the copper dissolving tank is provided with copper dissolving tank exhaust pipes on tank walls on two opposite sides above the overflow pipe of the copper dissolving tank; one end of each of the copper dissolving tank overflow pipe, the copper dissolving tank liquid supplementing pipe and the copper dissolving tank exhaust pipe extends into the inner side of the copper dissolving tank, and the other end extends out of the copper dissolving tank; the copper dissolving tank exhaust pipe is connected to an external acid mist washing tower;
the air filtering device is arranged in the upper end pipe body of the copper dissolving tank central pipe;
the acid-resistant circulating pump is positioned at the outer side of the copper dissolving tank, and an input end pipeline of the acid-resistant circulating pump extends into the inner side of the copper dissolving tank and is connected with the liquid inlet distributor in a matching way; the output end of the acid-resistant circulating pump is connected with a liquid inlet pipe of a copper dissolving tank; the liquid inlet pipe of the copper dissolving tank extends into the central pipe of the copper dissolving tank, and a liquid spray head is arranged at the end part of the liquid inlet pipe.
The copper dissolving device, wherein: the copper dissolving tank is provided with an annular water sealing device at the feed port; the copper dissolving tank cover seals the feed inlet through the annular water sealing device.
The copper dissolving device, wherein: four support columns are vertically and fixedly arranged in the central area of the inner bottom of the copper dissolving tank; the upper ends of the four supporting columns extend into the inner side of the lower end of the inner sleeve; the copper dissolving tank lower seal head is spherical and is fixed at the upper end parts of the four support columns.
The copper dissolving device, wherein: the feed liquor distributor is arranged in a space surrounded by four supporting columns at the bottom end of the copper dissolving tank.
The copper dissolving method of the copper dissolving device comprises the following specific processes:
(1) Uniformly distributing and adding copper raw materials to a copper dissolving tank partition plate through a feed port;
(2) Injecting a copper sulfate solution into the copper dissolving tank until the copper sulfate solution submerges the copper raw material;
(3) Starting an acid-resistant circulating pump, pumping out the solution below the partition plate of the copper dissolving tank, delivering the solution to the center of the central pipe of the copper dissolving tank, spraying the solution to the lower end socket of the copper dissolving tank through a liquid spray nozzle, and shielding the solution back into the copper dissolving tank through the lower end socket of the copper dissolving tank to contact with copper materials;
(4) Air entering from an air inlet at the upper end of a central tube of a copper dissolving tank is filtered through an air filtering device, then negative pressure in the central tube of the copper dissolving tank is caused by liquid spraying of a liquid spray nozzle, the air is brought into the copper dissolving tank to be mixed with solution sprayed by the liquid spray nozzle, foam liquid mixed with gas and liquid is formed, the formed foam liquid is filled into the copper dissolving tank, oxygen in the foam solution is fully contacted with copper materials, chemical reaction is carried out to generate copper oxide, and sulfuric acid contained in the foam solution is chemically reacted with the copper oxide to generate copper sulfate;
(5) The generated copper sulfate solution overflows back to the lower part of the baffle plate of the copper dissolving tank again through the overflow hole of the copper dissolving tank, a complete solution circulation system is formed in the copper dissolving tank, and the entering amount of air in the copper dissolving tank, the solution circulation speed and the solution temperature are controlled by adjusting the flow of the acid-resistant circulation pump in real time;
(6) The acid mist generated after the reaction enters an external acid mist washing tower through an exhaust pipe of a copper dissolving tank for treatment, and is discharged after the treatment is qualified;
(7) And finally, supplementing low-concentration lean solution of the system into the copper dissolving tank through a copper dissolving tank fluid supplementing pipe, and supplementing high-concentration rich solution into the system through an overflow pipe of the copper dissolving tank when the liquid level of the copper dissolving tank reaches a certain height, so that the balance of the copper concentration of the system is achieved, and continuous and stable production is ensured.
The beneficial effects are that:
the copper dissolving device has simple and reasonable structural design, is convenient to operate and use, can maximize the utilization efficiency of air during operation, can fully react with copper materials by using the least amount of air, can keep the temperature of the copper dissolving tank at 70-90 ℃ only by means of heat generated by chemical reaction in the copper dissolving tank due to small air consumption, can meet the temperature requirement for high-temperature copper dissolving, does not need steam for heating, saves energy, is environment-friendly, and is suitable for popularization and application.
Compared with the existing copper dissolving process, the copper dissolving method has the advantages that:
(1) The operation is simple and convenient, and the entering amount of air in the copper dissolving tank, the solution circulation speed and the solution temperature can be controlled by adjusting the flow of the acid-resistant circulating pump in real time; the copper dissolution efficiency is high, and is obviously improved compared with the traditional high-temperature copper dissolution and spraying copper dissolution efficiency, and the copper dissolution capacity is 1.5-2 times;
(2) The energy is saved, the environment is protected, the temperature of the copper dissolving tank can be kept at 70-90 ℃ without steam heating, and the steam cost is greatly saved; acid mist generated by the copper dissolving tank reaction is less than 25% of soaked copper dissolving, and 1% of sprayed copper dissolving is carried out; meanwhile, an annular water sealing device is arranged at the feeding port of the copper dissolving tank, the feeding port is sealed by the copper dissolving tank cover through the annular water sealing device, acid mist can be effectively prevented from being discharged into the air through the feeding port, and an exhaust tube of the copper dissolving tank which is equivalent to the acid mist collecting port is arranged above the copper dissolving tank, so that the acid mist can be effectively recovered and treated, and the environmental pollution is reduced;
(3) The requirements on copper raw materials are reduced, and compared with the situation that copper wires are required to be added in all the spraying copper dissolution, the requirements on the copper raw materials are greatly reduced, and copper plates and production tailings can be dissolved in a copper dissolution tank, so that the cost is obviously saved;
(4) The air of the copper dissolving tank is sucked into the central tube through the negative pressure of the central tube, and air is not required to be blown into the central tube by an air compressor or other equipment, so that the cost of the equipment and the operation is greatly saved.
Drawings
FIG. 1 is a schematic diagram of a copper dissolving apparatus according to the present invention.
In the figure: 1 a copper dissolving tank, 2 an air filtering device, 3 an acid-resistant circulating pump, 101 an inner sleeve, 102 an overflow cavity, 103 a copper dissolving tank overflow hole, 104 a feed inlet, 105 a support column, 106 a liquid inlet distributor, 107 a copper dissolving tank lower end socket, 108 a copper dissolving tank partition plate, 109 a copper dissolving tank central tube, 110 a shielding plate, 111 a copper dissolving tank liquid supplementing tube, 112 a copper dissolving tank exhaust tube, 113 an annular water sealing device, 114 a copper dissolving tank cover, 115 a copper dissolving tank liquid inlet tube and 116 a liquid spray head.
Detailed Description
As shown in FIG. 1, the copper dissolving device comprises a copper dissolving tank 1, an air filtering device 2 and an acid-resistant circulating pump 3.
An inner sleeve 101 is arranged on the inner side of the copper dissolving tank 1, and the upper end and the lower end of the inner sleeve 101 are communicated with the inner cavity of the copper dissolving tank 1; the top end of the inner sleeve 101 is connected with the inner wall of the upper end of the copper dissolving tank 1 after being turned outwards along the circumference, and the outer wall of the bottom end of the inner sleeve 101 is separated from the inner wall of the lower end of the copper dissolving tank 1, so that an overflow cavity 102 is formed between the inner side wall of the copper dissolving tank 1 and the outer side wall of the inner sleeve 101; the copper dissolving tank 1 is provided with copper dissolving tank overflow holes 103 on the corresponding side wall of the uppermost end of the overflow cavity 102.
The top end of the copper dissolving tank 1 is provided with a feeding port 104, and the inner side of the bottom end is provided with a liquid inlet distributor 106; four support columns 105 are vertically and fixedly arranged in the central area of the inner bottom of the copper dissolving tank 1, the upper ends of the four support columns 105 extend into the inner sleeve 101, spherical copper dissolving tank lower sealing heads 107 are arranged at the end parts in a matching mode, copper dissolving tank partition plates 108 are horizontally arranged at the top ends of the copper dissolving tank lower sealing heads 107, and the outer edges of the top ends are in sealing connection with the inner wall of the inner sleeve 101; the liquid inlet distributor 106 is disposed in a space surrounded by four support columns 105.
The inner center of the copper dissolving tank 1 is also vertically provided with a copper dissolving tank central pipe 109; the upper end of the copper dissolving tank central tube 109 extends out of the material feeding port 104 at the top of the copper dissolving tank 1, the lower end of the copper dissolving tank central tube passes through the copper dissolving tank partition plate 108 to extend into the inner cavity of the copper dissolving tank lower seal head 107, and the end part of the copper dissolving tank central tube is provided with a flow shielding plate 110 in a matching way; the copper dissolving tank partition plate 108 and the copper dissolving tank lower seal head 107 are supported by the copper dissolving tank central pipe 109; wherein, the copper dissolving tank baffle 108 is welded with the outer pipe wall of the copper dissolving tank central pipe 109, which can effectively ensure the bearing capacity of the copper dissolving tank baffle 108, ensure that the copper material in the copper dissolving tank 1 is sufficient and does not influence the use.
The copper dissolving tank 1 is provided with a copper dissolving tank overflow pipe 110 and a copper dissolving tank liquid supplementing pipe 111 on tank walls on two opposite sides above the inner sleeve 101 respectively; the uniform ends of the overflow pipe 110 of the copper dissolving tank and the liquid supplementing pipe 111 of the copper dissolving tank extend into the inner side of the copper dissolving tank 1, and the other ends extend out of the outer side of the copper dissolving tank 1; the copper dissolving tank 1 is provided with copper dissolving tank exhaust pipes 112 on two opposite tank walls above the copper dissolving tank overflow pipe 110 and is connected with an external acid mist washing tower (the acid mist washing tower is acid mist treatment general equipment) in a matching way through the copper dissolving tank exhaust pipes 112; one end of the copper melting tank suction branch pipe 112 extends into the inner side of the copper melting tank 1, and the other end extends out of the outer side of the copper melting tank 1.
The top of the copper dissolving tank 1 is also provided with an annular water sealing device 113 in a matched manner at the feed inlet 104, the feed inlet 104 is also provided with a copper dissolving tank cover 114, the copper dissolving tank cover 114 seals the feed inlet 104 through the annular water sealing device 113, and acid mist can be effectively prevented from being discharged into the air through the feed inlet 104.
The air filter device 2 is installed inside the upper end pipe body of the copper-dissolving tank center pipe 109.
The acid-resistant circulating pump 3 is positioned at the outer side of the copper dissolving tank 1, and an input end pipeline of the acid-resistant circulating pump extends into the inner side of the copper dissolving tank 1 and is connected with the liquid inlet distributor 106 in a matching way; the output end of the acid-resistant circulating pump 3 is connected with one end of a copper dissolution tank liquid inlet pipe 115 of the copper dissolution tank 1, the other end of the copper dissolution tank liquid inlet pipe 115 stretches into the upper end of the copper dissolution tank central pipe 105, and a liquid spray head 116 is further arranged at the end part.
The copper dissolving tank 1 is also provided with a copper dissolving tank exhaust pipe 112 which is equal to an acid mist collecting port above, and the generated acid mist is correspondingly less because the air amount used in the chemical reaction in the copper dissolving tank 1 is small, and the acid mist which is completely collected by the copper dissolving tank exhaust pipe 112 is discharged into an external acid mist washing tower for treatment.
The copper dissolving method of the invention is based on the copper dissolving device, and specifically comprises the following steps:
(1) The cleaned copper raw material enters the copper dissolving tank 1 from the feed inlet 104 and is evenly spread above the copper dissolving tank partition plate 108;
(2) Injecting a proper amount of dilute sulfuric acid solution into the copper dissolution tank 1, so that the dilute sulfuric acid solution overflows from the copper dissolution tank overflow holes 103 of the copper dissolution tank 1 to the lower part of the copper dissolution tank partition plate 108 of the copper dissolution tank 1;
(3) Starting an acid-resistant circulating pump 3, and conveying the dilute sulfuric acid solution below a copper-dissolving tank baffle 108 to a copper-dissolving tank liquid inlet pipe 115 through a liquid inlet distributor 106 (the liquid inlet distributor 106 can effectively remove impurities in the solution and can prevent air from entering the acid-resistant circulating pump 3, so that liquid inlet smoothness is ensured, the working efficiency is improved, and the service life of equipment is prolonged);
(4) A liquid spray head 116 arranged at the tail end of the copper dissolution tank liquid inlet pipe 115 sprays dilute sulfuric acid solution to the copper dissolution tank lower seal head 107, and negative pressure is generated in the copper dissolution tank central pipe 109;
the negative pressure in the central tube 109 of the copper dissolving tank naturally injects external air from the air inlet into the copper dissolving tank 1 (without using a high-power blower), impurities are removed through treatment of the air filtering device 2 and then enter the central tube 109 of the copper dissolving tank to form a foam solution mixed with gas and liquid with the dilute sulfuric acid solution sprayed by the liquid spray head 116, so that the utilization efficiency of the air is maximized, and the minimum amount of air is used for fully reacting with copper materials;
the mixed foam solution is shielded and flows back into the copper dissolution tank 1 under the combined action of the shielding plate 110 arranged at the bottom end of the copper dissolution tank central pipe 109 and the lower sealing head 107 of the copper dissolution tank, so that the solution is enabled to be turned over, the mixed foam solution is enabled to be fully contacted with copper raw materials placed above the copper dissolution tank partition plate 108 (oxygen in the formed foam solution is fully contacted with the copper materials to generate copper oxide through chemical reaction, and meanwhile, sulfuric acid and copper oxide contained in the foam solution are chemically reacted to generate copper sulfate), so that the full contact of sulfuric acid, air and the surface of the copper materials is realized, the reaction speed in the copper dissolution process is improved by 1.5-2 times, the temperature of the copper dissolution tank is kept at 70-90 ℃ through heat generated by efficient reaction, the temperature requirement required by high-temperature copper dissolution is met, and steam heating can be completely replaced;
(5) The reacted copper sulfate solution overflows back to the lower part of the copper dissolving tank baffle plate 108 through the copper dissolving tank overflow hole 103 again, and a complete solution circulation system is formed in the copper dissolving tank 1; wherein, the flow rate of the acid-resistant circulating pump 3 is used for adjusting the air inlet amount, the circulating speed and the temperature of the solution in the copper dissolving tank 1;
(6) All acid mist generated after the reaction (the amount of the acid mist generated by the chemical reaction in the copper dissolving tank 1 is small and the generated amount of the acid mist is correspondingly small) enters an external acid mist washing tower through an exhaust pipe 112 of the copper dissolving tank to be treated, and the acid mist is discharged after the treatment is qualified;
(7) And finally, the low-concentration lean solution is fed into the copper dissolving tank 1 through the copper dissolving tank liquid feeding pipe 111, and when the position of the copper dissolving tank 1 reaches a certain height, the high-concentration rich solution is fed into the system through the overflow pipe 110 of the copper dissolving tank and overflows back to the system, so that the balance of the copper concentration of the system is achieved, and the continuous and stable production is ensured.
The method is simple in operation, energy-saving and environment-friendly, the utilization efficiency of air is maximized during operation, the minimum amount of air is used for fully reacting with copper, the heat loss of a solution is also minimized due to small air consumption, the temperature of the copper dissolving tank can be kept at 70-90 ℃ only by means of the heat generated by chemical reaction in the copper dissolving tank, the temperature requirement for high-temperature copper dissolving can be met, and steam is not needed for heating.
Claims (5)
1. A copper dissolving device, characterized in that: the copper dissolving device comprises a copper dissolving tank, an air filtering device and an acid-resistant circulating pump;
a feeding port is arranged at the top end of the copper dissolving tank, and a liquid inlet distributor is arranged at the inner side of the bottom end; the copper dissolving tank is provided with a copper dissolving tank cover matched with a sealing cover at the feeding port;
an inner sleeve is also arranged on the inner side of the copper dissolving tank in a matching way, and the upper end and the lower end of the inner sleeve are communicated with the inner cavity of the copper dissolving tank; the inner side of the lower end of the inner sleeve is provided with a copper dissolving tank lower seal head in a matching way, the top end of the copper dissolving tank lower seal head is provided with a copper dissolving tank baffle plate, and the outer edge of the top end is in sealing connection with the inner wall of the inner sleeve; the outer wall of the bottom end of the inner sleeve is separated from the inner wall of the copper dissolving tank, and the top end of the inner sleeve is connected with the inner wall of the upper end of the copper dissolving tank after being outwards turned and extended along the circumferential direction, so that an overflow cavity is formed between the inner wall of the copper dissolving tank and the outer wall of the inner sleeve; the side wall of the copper dissolving tank corresponding to the uppermost end of the overflow cavity is provided with an overflow hole of the copper dissolving tank;
a central tube of the copper dissolving tank is vertically arranged in the center of the copper dissolving tank; the upper end of the copper dissolving tank central tube extends out of the material feeding opening and is provided with an air inlet, the lower end of the copper dissolving tank central tube penetrates through the copper dissolving tank partition plate and extends into the inner cavity of the copper dissolving tank lower seal head, and the end part of the copper dissolving tank central tube is also provided with a flow shielding plate in a matching manner;
the copper dissolving tank is provided with a copper dissolving tank overflow pipe and a copper dissolving tank liquid supplementing pipe on tank walls on two opposite sides above the inner sleeve respectively; the copper dissolving tank is provided with copper dissolving tank exhaust pipes on tank walls on two opposite sides above the overflow pipe of the copper dissolving tank; one end of each of the copper dissolving tank overflow pipe, the copper dissolving tank liquid supplementing pipe and the copper dissolving tank exhaust pipe extends into the inner side of the copper dissolving tank, and the other end extends out of the copper dissolving tank; the copper dissolving tank exhaust pipe is connected to an external acid mist washing tower;
the air filtering device is arranged in the upper end pipe body of the copper dissolving tank central pipe;
the acid-resistant circulating pump is positioned at the outer side of the copper dissolving tank, and an input end pipeline of the acid-resistant circulating pump extends into the inner side of the copper dissolving tank and is connected with the liquid inlet distributor in a matching way; the output end of the acid-resistant circulating pump is connected with a liquid inlet pipe of a copper dissolving tank; the liquid inlet pipe of the copper dissolving tank extends into the central pipe of the copper dissolving tank, and a liquid spray head is arranged at the end part of the liquid inlet pipe.
2. The copper dissolving device according to claim 1, wherein: the copper dissolving tank is provided with an annular water sealing device at the feed port; the copper dissolving tank cover seals the feed inlet through the annular water sealing device.
3. The copper dissolving device according to claim 1, wherein: four support columns are vertically and fixedly arranged in the central area of the inner bottom of the copper dissolving tank; the upper ends of the four supporting columns extend into the inner side of the lower end of the inner sleeve; the copper dissolving tank lower seal head is spherical and is fixed at the upper end parts of the four support columns.
4. A copper dissolving device according to claim 3, characterized in that: the feed liquor distributor is arranged in a space surrounded by four supporting columns at the bottom end of the copper dissolving tank.
5. A copper dissolution method based on the copper dissolution device as claimed in any one of claims 1 to 4, characterized in that the specific flow of the copper dissolution method is as follows:
(1) Uniformly distributing and adding copper raw materials to a copper dissolving tank partition plate through a feed port;
(2) Injecting a copper sulfate solution into the copper dissolving tank until the copper sulfate solution submerges the copper raw material;
(3) Starting an acid-resistant circulating pump, pumping out the solution below the partition plate of the copper dissolving tank, delivering the solution to the center of the central pipe of the copper dissolving tank, spraying the solution to the lower end socket of the copper dissolving tank through a liquid spray nozzle, and shielding the solution back into the copper dissolving tank through the lower end socket of the copper dissolving tank to contact with copper materials;
(4) Air entering from an air inlet at the upper end of a central tube of a copper dissolving tank is filtered through an air filtering device, then negative pressure in the central tube of the copper dissolving tank is caused by liquid spraying of a liquid spray nozzle, the air is brought into the copper dissolving tank to be mixed with solution sprayed by the liquid spray nozzle, foam liquid mixed with gas and liquid is formed, the formed foam liquid is filled into the copper dissolving tank, oxygen in the foam solution is fully contacted with copper materials, chemical reaction is carried out to generate copper oxide, and sulfuric acid contained in the foam solution is chemically reacted with the copper oxide to generate copper sulfate;
(5) The generated copper sulfate solution overflows back to the lower part of the baffle plate of the copper dissolving tank again through the overflow hole of the copper dissolving tank, a complete solution circulation system is formed in the copper dissolving tank, and the entering amount of air in the copper dissolving tank, the solution circulation speed and the solution temperature are controlled by adjusting the flow of the acid-resistant circulation pump in real time;
(6) The acid mist generated after the reaction enters an external acid mist washing tower through an exhaust pipe of a copper dissolving tank for treatment, and is discharged after the treatment is qualified;
(7) And finally, supplementing low-concentration lean solution of the system into the copper dissolving tank through a copper dissolving tank fluid supplementing pipe, and supplementing high-concentration rich solution into the system through an overflow pipe of the copper dissolving tank when the liquid level of the copper dissolving tank reaches a certain height, so that the balance of the copper concentration of the system is achieved, and continuous and stable production is ensured.
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| CN201811185336.4A CN109097816B (en) | 2018-10-11 | 2018-10-11 | Copper dissolving device and copper dissolving method thereof |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110117812B (en) * | 2019-06-18 | 2020-09-18 | 广东嘉元科技股份有限公司 | A dissolve copper jar for production of 6 micron copper foil |
| CN110820020A (en) * | 2019-11-01 | 2020-02-21 | 金川集团股份有限公司 | Novel dissolve copper device |
| CN112899486A (en) * | 2021-03-02 | 2021-06-04 | 江西铜博科技有限公司 | High-efficiency energy-saving copper dissolving device |
| CN114452892A (en) * | 2021-12-27 | 2022-05-10 | 西安泰金工业电化学技术有限公司 | Gas-liquid mixing self-suction device |
| CN114540887A (en) * | 2022-02-16 | 2022-05-27 | 云南惠铜新材料科技有限公司 | Efficient energy-saving copper dissolving system and process concentration control equipment |
| CN114713176A (en) * | 2022-05-27 | 2022-07-08 | 西安泰金工业电化学技术有限公司 | High-efficient copper dissolving tank |
| CN115779795B (en) * | 2022-12-09 | 2023-05-16 | 江西省江铜铜箔科技股份有限公司 | Copper dissolving device |
| CN117046431A (en) * | 2023-08-24 | 2023-11-14 | 江西铜博科技股份有限公司 | Preparation method of copper sulfate solution |
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