CN117512696A - Nickel continuous electro-deposition or electrolysis method - Google Patents
Nickel continuous electro-deposition or electrolysis method Download PDFInfo
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- CN117512696A CN117512696A CN202311276446.2A CN202311276446A CN117512696A CN 117512696 A CN117512696 A CN 117512696A CN 202311276446 A CN202311276446 A CN 202311276446A CN 117512696 A CN117512696 A CN 117512696A
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 270
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 146
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 124
- 238000004070 electrodeposition Methods 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 claims abstract description 87
- 230000008569 process Effects 0.000 claims abstract description 80
- 229910052751 metal Inorganic materials 0.000 claims abstract description 51
- 239000002184 metal Substances 0.000 claims abstract description 51
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 26
- 239000000956 alloy Substances 0.000 claims abstract description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052802 copper Inorganic materials 0.000 claims abstract description 25
- 239000010949 copper Substances 0.000 claims abstract description 25
- 108700041286 delta Proteins 0.000 claims abstract description 20
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003792 electrolyte Substances 0.000 claims abstract description 11
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 claims abstract description 8
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 claims abstract description 8
- 238000005363 electrowinning Methods 0.000 claims description 24
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 15
- 229910052741 iridium Inorganic materials 0.000 claims description 15
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 15
- 229910052707 ruthenium Inorganic materials 0.000 claims description 15
- 238000005452 bending Methods 0.000 claims description 8
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 4
- 239000004327 boric acid Substances 0.000 claims description 4
- 238000010924 continuous production Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 8
- 238000005520 cutting process Methods 0.000 abstract description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 12
- 238000000151 deposition Methods 0.000 description 12
- 230000008021 deposition Effects 0.000 description 12
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005660 chlorination reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000006479 redox reaction Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 241000080590 Niso Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical group Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/06—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese
- C25C1/08—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese of nickel or cobalt
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/02—Electrodes; Connections thereof
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/06—Operating or servicing
-
- 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)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention discloses a nickel continuous electro-deposition or electrolysis method, which comprises the following steps: step S11: introducing nickel sulfate electrolyte into a plate electrodeposition or electrolysis tank, and placing an anode plate and a cathode plate into the electrolytic tank; step S12: the anode plate and the cathode plate are electrically connected, the electrodeposition or electrolysis work is started, and a metal nickel plate is generated on the cathode plate; step S13: continuously carrying out electrodeposition or electrolysis until the thickness (delta) of the metal nickel plate generated on the female plate is more than or equal to 1.0mm; when used to make the starting sheet, the metallic nickel plate preferably has a thickness of: the thickness (delta 1) of the metal nickel plate is more than or equal to 3.5mm and more than or equal to 1.2mm. When not used for making the starting sheet, the metallic nickel plate preferably has a thickness of: the thickness (delta 1) of the metal nickel plate is more than or equal to 5.0mm. Wherein the female plate is made of copper plate or copper base alloy plate or aluminum base alloy plate. The method has the advantages that 1, the cutting procedure is not needed when the starting sheet is manufactured, and no cutting leftover materials are left. 2. No plate or flat work is required. Greatly reduces labor intensity and reduces the number of on-duty personnel. 3. The electrodeposition or electrolysis process has high production efficiency and is easy for intelligent production.
Description
Technical Field
The invention relates to the technical field of nickel electrodeposition or electrolysis, in particular to a nickel continuous electrodeposition or electrolysis method.
Background
Electrodeposition or electrolysis (also called electrodeposition) is a common technique for producing nonferrous metals by hydrometallurgical electrorefining, and the electrodeposition or electrolysis method is used for producing metallic nickel, namely, a nickel electrodeposition or electrolysis process is one of main methods for producing metallic nickel. The production of metallic nickel by electrodeposition or electrolysis is classified into sulfuric acid systems and chlorination systems.
(1) Sulfuric acid system
The sulfuric acid system is prepared by using nickel sulfate (NiSO 4 ) The solution is used as a raw material, and the following oxidation-reduction reaction occurs in an electro-deposition or electrolysis cell under the action of direct current:
cathode reaction: ni (Ni) 2+ +2e=ni (metallic nickel)
I.e. the cathode produces metallic nickel, i.e. electrodeposited or electrolyzed nickel.
(2) Chlorination system
The chloridizing system is nickel chloride (NiCL 2 ) The solution is used as a raw material, and the following oxidation-reduction reaction occurs in an electro-deposition or electrolysis cell under the action of direct current:
cathode reaction: ni (Ni) 2+ +2e=ni (metallic nickel)
I.e. the cathode produces metallic nickel, i.e. electrodeposited or electrolyzed nickel.
The traditional nickel electro-deposition or electrolysis production process comprises the following steps:
the electrolytic deposition or the electrolytic bath is divided into a plate electrolytic deposition or an electrolytic bath and a starting sheet electrolytic deposition or an electrolytic bath, wherein the plate electrolytic deposition or the electrolytic bath is firstly carried out to produce a nickel plate, the nickel plate is taken out and processed into a starting sheet, and then the starting sheet is put into the starting sheet electrolytic deposition or the electrolytic bath to continue to produce the metallic nickel product.
For the sulfuric acid system nickel electrodeposition or electrolysis process, sulfuric acid is generated by an anode in the electrodeposition or electrolysis process, and diaphragm cloth is added in the electrodeposition or electrolysis process to separate catholyte from anolyte in order to avoid the reaction of sulfuric acid and nickel generated by a cathode. The diaphragm cloth is processed into a bag, namely a diaphragm bag, and the diaphragm bag is used for sleeving a cathode plate or an anode plate, namely diaphragm electrowinning or electrolysis technology.
For the nickel electrodeposition or electrolysis process of the chloridizing system, the anode generates chlorine in the process of electrodeposition or electrolysis, and the process of electrodeposition or electrolysis needs special design, sealing or sealing for electrodeposition or electrolysis in order to avoid nickel reaction and chlorine leakage generated by the chlorine and the cathode. And has a chlorine treatment system.
At present, a cathode plate in a plate electrodeposition or electrolysis bath is generally manufactured by adopting a metal titanium plate, a titanium alloy plate and a stainless steel plate, namely a so-called plate. The method comprises the steps of carrying out general electrodeposition or electrolysis for 24-48 hours in a plate electrodeposition or electrolysis tank, taking out a cathode plate (plate) when the thickness of the nickel plate reaches 0.3-0.8 mm, stripping the nickel plate from the cathode plate (plate), then cutting, flattening, punching, installing lifting lugs, and preparing the cathode plate, namely the starting plate.
And (3) placing the starting sheet into an electrodeposition or electrolysis tank of the starting sheet, and continuing to produce the metal nickel plate by electrodeposition or electrolysis. Because the starting sheet is very thin and is only less than 1.0mm thick, the starting sheet can be bent and deformed when being placed into an electrowinning or electrolysis tank to continue the electrowinning or electrolysis process, and the current efficiency of the electrowinning or electrolysis process and the performance of the electrowinning or electrolysis process are affected. In order to lighten the influence of bending deformation of a starting sheet in the process of electrodeposition or electrolysis, the conventional nickel electrodeposition or electrolysis process is that the starting sheet is put into an electrodeposition or electrolysis tank to be subjected to electrodeposition or electrolysis, namely a cathode plate is taken out of the electrodeposition or electrolysis tank, the deformed cathode plate is leveled manually, and then the cathode plate is put back into the electrodeposition or electrolysis tank to continue the electrodeposition or electrolysis. Typically at least one full plate per fast cathode plate. The plate work is generally carried out by placing the starting sheet into an electrodeposition or electrolysis cell to perform electrodeposition or electrolysis, and then continuing the electrodeposition or electrolysis for 30 to 90 hours.
The prior art has the following problems:
1. the labor intensity is high: at present, an operator is generally responsible for the operation of 4 to 8 electrowinning or electrolysis cells in China. Every electrowinning or electrolysis cell 35 to 50 negative plates, a few tens of kilograms of negative plates are lifted up, so to speak, and the plate surface needs to be beaten and flattened.
2. The production efficiency is low: after electrodeposition or electrolysis in a plate tank for 1.5 to 2 days, stripping the nickel plate from the cathode plate, cutting, flattening, punching, installing lifting lugs, manufacturing a starting plate, then placing the starting plate into the electrodeposition or electrolysis tank for electrodeposition or electrolysis, taking the cathode plate out one by one for plate finishing operation after the starting plate is subjected to electrodeposition or electrolysis for 1 to 3 days, and reprocessing the deformed cathode plate to be flat, wherein the plate surface is flat so as to be capable of continuing the electrodeposition or electrolysis.
3. The labor cost is high: the steps 1 and 2 are completed by a large amount of labor force.
4. The manufacturing process of the starting sheet generates a large amount of leftover materials, and only can be sold at a reduced price.
Disclosure of Invention
In order to solve at least one technical problem in the prior art, the patent proposes a continuous nickel electrodeposition or electrolysis method, namely a plate continuous electrodeposition or electrolysis process. The process is simple to operate, the labor intensity of the traditional process is greatly reduced, the production efficiency is high, the product quality is good, and the energy conservation, consumption reduction, cost reduction and efficiency improvement are realized.
The patent proposes a nickel continuous electro-deposition or electrolysis method, which comprises the following steps:
step S11: introducing nickel sulfate electrolyte into a plate electrodeposition or electrolysis tank, and placing an anode plate and a cathode plate into the electrolytic tank;
step S12: the anode plate and the cathode plate are electrically connected, the electrodeposition or electrolysis work is started, and a metal nickel plate is generated on the cathode plate;
step S13: and continuously carrying out electrodeposition or electrolysis until the thickness (delta) of the metal nickel plate generated on the female plate is more than or equal to 1.0mm.
Wherein in step S13 a selective cathodic electrodeposition or electrolysis process is performed:
(3) when used to make the starting sheet, the metallic nickel plate preferably has a thickness of: the thickness (delta 1) of the metal nickel plate is more than or equal to 3.5mm and more than or equal to 1.2mm.
(4) When not used for making the starting sheet, the metallic nickel plate preferably has a thickness of: thickness of metal nickel plate (delta 1)
≥5.0mm。
Preferably, the female plate is made of copper plate or copper-base alloy plate or aluminum-base alloy plate. The surface of the copper plate or aluminum plate may be coated or plated with ruthenium or iridium. The surface of the copper-based alloy plate or the aluminum-based alloy plate is coated or plated with ruthenium or iridium. The thickness (delta 2) of the cathode plate is more than or equal to 1.5mm, preferably more than or equal to 6mm and more than or equal to 2mm.
The method has the advantages that the plate continuous electro-deposition or electrolysis process is adopted, and in the nickel electro-deposition or electrolysis process, no starting plate electro-deposition or electrolysis tank exists, and only the plate electro-deposition or electrolysis tank exists. And generating metallic nickel on the cathode plate along with the process of electrodeposition or electrolysis, and continuing the process until the thickness of the nickel plate reaches the design requirement, namely, the thickness is more than or equal to 1.0mm, and stripping the nickel plate from the plate to obtain the nickel product.
It is known that in the current production practice of nickel electrodeposition or electrolysis processes, as metallic nickel is continuously generated on a cathode plate along with the progress of the electrodeposition or electrolysis process in the nickel electrodeposition or electrolysis process, the generated metallic nickel has internal stress, and the internal stress is continuously increased along with the continuous increase of the quality of the electrodeposited or electrolyzed nickel.
The materials used in the prior art comprise a metal titanium or titanium alloy substrate, a substrate made of ruthenium or iridium coated or plated on the surface, a stainless steel substrate and the like, and the nickel plate is easy to explode and explode in the nickel electrodeposition or electrolysis process, namely the surface of the nickel plate is cracked, the nickel plate is separated from the cathode substrate and falls off, and the nickel electrodeposition or electrolysis process is affected.
In a plate electrodeposition or electrolysis cell, as the electrodeposition or electrolysis process proceeds, internal stress increases continuously, and the internal stress can cause the nickel plate generated on the cathode plate to explode, crack, partially separate from the plate, or completely separate from the plate and fall off from the plate. Especially when the thickness of the nickel plate on the cathode plate is 0.5-1.5 mm, the internal stress can cause the nickel plate on the cathode plate to be partially or completely separated from the plate, so that the electrodeposition or electrolysis process can not be continued.
In the electrolytic deposition or electrolysis cell of the starting sheet, along with the progress of the electrolytic deposition or electrolysis process, the internal stress is increased continuously, the internal stress can cause the bending deformation of the starting sheet, especially in the stage of the electrolytic deposition or electrolysis process with the thickness of the starting sheet being less than 3.0mm, the current efficiency of the electrolytic deposition or electrolysis process is reduced, or the electrolytic deposition or electrolysis process cannot be continued. The bent and deformed cathode plate must be taken out, corrected and straightened, and then placed back into the electrowinning or electrolysis cell to continue electrowinning or electrolysis process.
Therefore, the technical prejudice in the prior art is that the nickel plate on the cathode plate cannot be too thick, the nickel plate must be peeled off to be made into a starting plate for secondary electrodeposition or electrolysis, and meanwhile, a huge cutting machine and a flattening machine are required to be purchased to cut and flatten the starting plate before and after the secondary electrodeposition or electrolysis process. This is an existing technical prejudice.
In this patent, in order to realize a plate continuous electrodeposition or electrolysis process of a nickel electrodeposition or electrolysis process, the above technical prejudice must be solved.
The technology skillfully solves the problems, realizes that the nickel plate is not exploded or cracked in the electrolytic deposition or electrolysis process of the nickel plate, can not be separated from the plate locally, and realizes the continuous deposition or electrolysis of the nickel plate.
The process first selects the material with good conductivity and toughness, strong binding force with electrodeposited or electrolyzed nickel in the process of electrodepositing or electrolysis and easy stripping of nickel plates to manufacture cathode plates. Namely, the cathode blank made of a proper material is manufactured. The cathode blank must have a thickness which should be greater than 1.5mm. The preferred thickness is: 2.0 mm-6.0 mm. Materials for the cathode blank include, but are not limited to: copper metal; a copper-based alloy; coating or plating ruthenium and iridium on the surface of the metallic copper; the surface of the copper-based alloy is coated or plated with ruthenium and iridium. Metal aluminum; an aluminum-based alloy; coating or plating ruthenium and iridium on the surface of the metal aluminum; the surface of the aluminum-based alloy is coated or plated with ruthenium and iridium.
The cathode blank has a certain thickness, so that the cathode blank has enough mechanical rigidity to restrain stress generated in the nickel electrodeposition or electrolysis process, and the cathode blank is ensured not to bend or deform in the electrodeposition or electrolysis process.
The cathode plate has good conductivity, high current efficiency in the nickel electrodeposition or electrolysis process, relatively uniform electric field of each differential unit on the cathode plate, uniform thickness and mass density of nickel generated on the cathode plate, and reduced tendency of explosion, cracking and partial separation from the plate of the electrodeposited or electrolyzed nickel plate.
The cathode plate has good conductivity and toughness, reduces the internal stress of the electrodeposited or electrolyzed nickel plate, and reduces or eliminates the phenomena of explosion skin, cracking and partial detachment from the plate.
The cathode plate made of the special material has strong binding force with the electrodeposited or electrolyzed nickel, and avoids the conditions that the electrodeposited or electrolyzed nickel plate explodes and cracks and is partially separated from the cathode plate.
The continuous nickel electrodeposition or electrolysis method (novel nickel plate continuous electrodeposition or electrolysis process) has the advantages that:
1. the complicated procedure of manufacturing the starting sheet is not needed, the cutting leftover materials are not needed, and expensive and huge cutting machines and other equipment are not needed.
2. The whole plate is not needed. Greatly reduces labor intensity, reduces the number of on-duty personnel, and does not need to purchase expensive and huge equipment such as levelers.
3. The electrodeposition or electrolysis process has high production efficiency, is easy for intelligent production, reduces a large number of equipment and personnel, can use more factory building space for setting the electrodeposition or electrolysis tank, and is convenient for large-scale and intelligent production.
Drawings
FIG. 1 is a schematic flow diagram of a continuous nickel electrowinning or electrolysis process in accordance with one embodiment of the present invention.
FIG. 2 is a schematic flow chart of a continuous nickel electrowinning or electrolysis process in accordance with yet another embodiment of the invention.
FIG. 3 is a schematic flow chart of a continuous nickel electrowinning or electrolysis process in accordance with yet another embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
Figures 1-3 schematically show a nickel continuous electro-deposition or electrolysis process according to the invention.
Example 1
As shown in fig. 1, a continuous electrodeposition or electrolysis method of nickel comprises the steps of:
a continuous nickel electrowinning or electrolysis process, comprising the steps of: ,
step S11: introducing nickel sulfate electrolyte into a plate electrodeposition or electrolysis tank, and placing an anode plate and a cathode plate into the electrolytic tank;
step S12: the anode plate and the cathode plate are electrically connected, the electrodeposition or electrolysis work is started, and a metal nickel plate is generated on the cathode plate;
step S13: and continuously carrying out electrodeposition or electrolysis until the thickness (delta) of the metal nickel plate generated on the female plate is more than or equal to 1.0mm.
Wherein in step S13 a selective cathodic electrodeposition or electrolysis process is performed:
preferably, when not used to make the starting sheet, the metallic nickel sheet is preferably of a thickness of: the thickness (delta 1) of the metal nickel plate is more than or equal to 5.0mm.
In step S13, the thickness of the metal nickel plate generated on the cathode plate can be controlled by controlling the process time of electrodeposition or electrolysis, and the thickness (delta 1) of the metal nickel plate is controlled to be more than or equal to 5mm.
And in the step S13, the selective cathode plate electrodeposition or electrolysis process is carried out, so that the metal nickel plate generated on the cathode plate cannot be separated from the cathode plate or fall off from the cathode plate under the condition that the thickness (delta 1) of the metal nickel plate generated on the cathode plate is more than or equal to 5mm, and the stable operation of the nickel electrodeposition or electrolysis process is not influenced.
The cathode plate blank is made of copper plates or copper-based alloy plates or aluminum-based alloy plates, and the thickness (delta 2) of the cathode plate blank is more than or equal to 1.5mm, preferably more than or equal to 6mm, and the thickness (delta 2) of the cathode plate blank is more than or equal to 2mm.
The surface of the copper plate or the copper-based alloy plate is coated or plated with ruthenium or iridium.
The surface of the aluminum plate or the aluminum-based alloy plate is coated or plated with ruthenium or iridium.
Example two
As shown in fig. 2, a continuous electrodeposition or electrolysis method of nickel comprises the steps of:
a continuous nickel electrowinning or electrolysis process, comprising the steps of: ,
step S11: introducing boric acid-free nickel sulfate electrolyte into a plate electrodeposition or electrolysis tank, and placing the boric acid-free nickel sulfate electrolyte into an anode plate and a cathode plate;
step S12: the anode plate and the cathode plate are electrically connected, the electrodeposition or electrolysis work is started, and a metal nickel plate is generated on the cathode plate;
step S13: and continuously carrying out electrodeposition or electrolysis until the thickness (delta) of the metal nickel plate generated on the female plate is more than or equal to 1.0mm.
Wherein in step S13 a selective cathodic electrodeposition or electrolysis process is performed:
preferably, when not used to make the starting sheet, the metallic nickel sheet is preferably of a thickness of: the thickness (delta 1) of the metal nickel plate is more than or equal to 5.0mm.
In step S13, the thickness of the metal nickel plate generated on the cathode plate can be controlled by controlling the process time of electrodeposition or electrolysis, and the thickness (delta 1) of the metal nickel plate is controlled to be more than or equal to 5mm.
And in the step S13, the selective cathode plate electrodeposition or electrolysis process is carried out, so that the metal nickel plate generated on the cathode plate cannot be separated from the cathode plate or fall off from the cathode plate under the condition that the thickness (delta 1) of the metal nickel plate generated on the cathode plate is more than or equal to 5mm, and the stable operation of the nickel electrodeposition or electrolysis process is not influenced.
The cathode plate blank is made of copper plates or copper-based alloy plates or aluminum-based alloy plates, and the thickness (delta 2) of the cathode plate blank is more than or equal to 1.5mm, preferably more than or equal to 6mm, and the thickness (delta 2) of the cathode plate blank is more than or equal to 2mm.
The surface of the copper plate or the copper-based alloy plate is coated or plated with ruthenium or iridium.
The surface of the aluminum plate or the aluminum-based alloy plate is coated or plated with ruthenium or iridium.
In the invention, boric acid is not contained in the electrolyte in the step S11, and the whole electrodeposition or electrolysis process can realize that the thickness (delta 1) of the metal nickel plate generated on the cathode plate is more than or equal to 5mm under the condition that boric acid is not contained in the electrolyte, the appearance shape of the metal nickel plate is complete, and the metal nickel plate generated on the cathode plate cannot be separated from the cathode plate or fall off from the cathode plate, so that the normal and stable operation of the nickel electrodeposition or electrolysis process cannot be influenced.
Embodiment III:
as shown in fig. 3, a continuous electrodeposition or electrolysis method of nickel comprises the steps of:
step S11: introducing nickel sulfate electrolyte into a plate electrodeposition or electrolysis tank, and placing an anode plate and a cathode plate into the electrolytic tank;
step S12: the anode plate and the cathode plate are electrically connected, the electrodeposition or electrolysis work is started, and a metal nickel plate is generated on the cathode plate;
step S13: and continuously carrying out electrodeposition or electrolysis until the thickness (delta) of the metal nickel plate generated on the female plate is more than or equal to 1.0mm.
Wherein in step S13 a selective cathodic electrodeposition or electrolysis process is performed:
preferably, when used to make the starting sheet, the metallic nickel sheet is preferably of a thickness of: the thickness (delta 1) of the metal nickel plate is more than or equal to 3.5mm and more than or equal to 1.2mm.
Further comprises:
step S14: stripping a metal nickel plate with the thickness of 1.2mm-3.5mm from a female plate, and mounting lifting lugs on the metal nickel plate to prepare a cathode plate, namely a starting sheet;
step S15: and (3) putting the starting sheet serving as the cathode plate back into an electrodeposition or electrolysis tank, and continuing to perform electrodeposition or nickel electrolysis until the thickness (delta 1) of the starting sheet is more than or equal to 5.0mm.
In the continuous process in step S15, the starting sheet is not required to be taken out to be corrected, and other operations for straightening the starting sheet due to deformation of the starting sheet are not required.
In addition, as the thickness of the starting sheet serving as the cathode plate increases, the bending or twisting deformation degree of the cathode sheet is small when the step S15 is continuously performed, and the normal and stable operation of the electrodeposition or electrolysis process is not affected. When the starting sheet as the cathode plate is vertical to the horizontal plane, the maximum deformation degree of bending or twisting deformation of the vertical projection is less than 1.5%, and the maximum deformation degree of bending or twisting deformation of the horizontal projection is less than 2.0%.
The cathode plate blank is made of copper plates or copper-based alloy plates or aluminum-based alloy plates, and the thickness (delta 2) of the cathode plate blank is more than or equal to 1.5mm, preferably more than or equal to 6mm, and the thickness (delta 2) of the cathode plate blank is more than or equal to 2mm.
The surface of the copper plate or the copper-based alloy plate is coated or plated with ruthenium or iridium.
The surface of the aluminum plate or the aluminum-based alloy plate is coated or plated with ruthenium or iridium.
What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.
Claims (10)
1. A continuous nickel electrowinning or electrolysis process, comprising the steps of: ,
step S11: introducing nickel sulfate electrolyte into a plate electrodeposition or electrolysis tank, and placing an anode plate and a cathode plate into the electrolytic tank;
step S12: the anode plate and the cathode plate are electrically connected, the electrodeposition or electrolysis work is started, and a metal nickel plate is generated on the cathode plate;
step S13: and continuously carrying out electrodeposition or electrolysis until the thickness (delta) of the metal nickel plate generated on the female plate is more than or equal to 1.0mm.
Wherein in step S13 a selective cathodic electrodeposition or electrolysis process is performed:
(1) when used to make the starting sheet, the metallic nickel plate preferably has a thickness of: the thickness (delta 1) of the metal nickel plate is more than or equal to 3.5mm and more than or equal to 1.2mm.
(2) When not used for making the starting sheet, the metallic nickel plate preferably has a thickness of: the thickness (delta 1) of the metal nickel plate is more than or equal to 5.0mm.
2. A continuous nickel electrowinning or electrolysis process as claimed in claim 1, wherein: in step S13, the thickness of the metal nickel plate generated on the cathode plate can be controlled by controlling the process time of electrodeposition or electrolysis, and the thickness (delta 1) of the metal nickel plate is more than or equal to 5mm.
3. A continuous nickel electrowinning or electrolysis process as claimed in claim 2, wherein: and in the step S13, the selective cathode plate electrodeposition or electrolysis process is carried out, so that the metal nickel plate generated on the cathode plate cannot be separated from the cathode plate or fall off from the cathode plate under the condition that the thickness (delta 1) of the metal nickel plate generated on the cathode plate is more than or equal to 5mm, and the stable operation of the nickel electrodeposition or electrolysis process is not influenced.
4. A continuous nickel electrowinning or electrolysis process as claimed in claim 1, wherein: the female plate blank is made of copper plates or copper-based alloy plates or aluminum-based alloy plates, and the thickness (delta 2) of the female plate blank is more than or equal to 1.5mm, preferably more than or equal to 6mm, and the thickness (delta 2) of the cathode blank is more than or equal to 2mm.
5. A continuous nickel electrowinning or electrolysis process as claimed in claim 4, wherein: the surface of the copper plate or the copper-based alloy plate is coated or plated with ruthenium or iridium.
6. A continuous nickel electrowinning or electrolysis process as claimed in claim 4, wherein: the surface of the aluminum plate or the aluminum-based alloy plate is coated or plated with ruthenium or iridium.
7. A continuous nickel electrowinning or electrolysis process as claimed in claim 4, wherein: the electrolyte in the step S11 is free of boric acid, the whole electrodeposition or electrolysis process can realize that the thickness (delta 1) of the metal nickel plate generated on the cathode plate is more than or equal to 5mm under the condition that the electrolyte is free of boric acid, the appearance shape of the metal nickel plate is complete, and the metal nickel plate generated on the cathode plate cannot be separated from the cathode plate or fall off from the cathode plate, so that the normal and stable operation of the nickel electrodeposition or electrolysis process cannot be influenced.
8. A continuous nickel electrowinning or electrolysis process as claimed in claim 4, wherein: in the step S13, continuous electrodeposition or electrolysis is carried out until the thickness (delta 1) of the metal nickel plate is more than or equal to 3.5mm and more than or equal to 1.2mm;
further comprising step S14: stripping a metal nickel plate with the thickness of 1.2mm-3.5mm from a female plate, and mounting lifting lugs on the metal nickel plate to prepare a cathode plate, namely a starting sheet;
step S15: and (3) putting the starting sheet serving as the cathode plate back into an electrodeposition or electrolysis tank, and continuing to perform electrodeposition or nickel electrolysis until the thickness (delta 1) of the starting sheet is more than or equal to 5.0mm.
9. A continuous nickel electrowinning or electrolysis process as claimed in claim 4, wherein: in the continuous process, the step S15 is performed without taking out the starting sheet for correction, and without performing other operations that are necessary to process the starting sheet to be flat due to deformation.
10. A continuous nickel electrowinning or electrolysis process as claimed in claim 4, wherein: when the step S15 is continuously performed, the bending or twisting deformation degree of the cathode plate is small along with the increase of the thickness of the starting sheet serving as the cathode plate, and the normal and stable operation of the electrodeposition or electrolysis process is not affected. When the starting sheet as the cathode plate is vertical to the horizontal plane, the maximum deformation degree of bending or twisting deformation of the vertical projection is less than 1.5%, and the maximum deformation degree of bending or twisting deformation of the horizontal projection is less than 2.0%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311276446.2A CN117512696A (en) | 2023-09-28 | 2023-09-28 | Nickel continuous electro-deposition or electrolysis method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311276446.2A CN117512696A (en) | 2023-09-28 | 2023-09-28 | Nickel continuous electro-deposition or electrolysis method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117512696A true CN117512696A (en) | 2024-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311276446.2A Pending CN117512696A (en) | 2023-09-28 | 2023-09-28 | Nickel continuous electro-deposition or electrolysis method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117512696A (en) |
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2023
- 2023-09-28 CN CN202311276446.2A patent/CN117512696A/en active Pending
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