CN114622247B - Copper extraction process of ore low-concentration acid leaching solution - Google Patents
Copper extraction process of ore low-concentration acid leaching solution Download PDFInfo
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- CN114622247B CN114622247B CN202110444085.2A CN202110444085A CN114622247B CN 114622247 B CN114622247 B CN 114622247B CN 202110444085 A CN202110444085 A CN 202110444085A CN 114622247 B CN114622247 B CN 114622247B
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 127
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 126
- 239000010949 copper Substances 0.000 title claims abstract description 126
- 238000002386 leaching Methods 0.000 title claims abstract description 110
- 238000000605 extraction Methods 0.000 title claims abstract description 63
- 239000002253 acid Substances 0.000 title claims abstract description 17
- 238000004070 electrodeposition Methods 0.000 claims abstract description 111
- 239000007788 liquid Substances 0.000 claims abstract description 70
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910001431 copper ion Inorganic materials 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000003860 storage Methods 0.000 claims abstract description 20
- 238000005507 spraying Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 14
- 238000011049 filling Methods 0.000 claims abstract description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 19
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical group [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 12
- 239000005751 Copper oxide Substances 0.000 claims description 12
- 229910000431 copper oxide Inorganic materials 0.000 claims description 12
- 238000003723 Smelting Methods 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 abstract description 5
- 238000000151 deposition Methods 0.000 description 16
- 230000008021 deposition Effects 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 2
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000001099 ammonium carbonate Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000009616 inductively coupled plasma Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000004993 emission spectroscopy Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 125000000101 thioether group Chemical group 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- 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
- C25C1/12—Electrolytic production, recovery or refining of metals by electrolysis of solutions of copper
-
- 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)
- Manufacture And Refinement Of Metals (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention belongs to the technical field of copper extraction, and particularly relates to a copper extraction process of low-concentration acid leaching solution of ores. At least comprises the following steps: (1) preparing leaching liquid: collecting copper-containing ore and crushing; spraying leaching with leaching agent, and collecting leaching solution; (2) electrodepositing copper extraction: and filling the leaching solution into a liquid storage barrel, then sucking the leaching solution into an electrodeposition tank of an electrodeposition device, and adsorbing copper ions in the leaching solution to a cathode of the electrodeposition tank in an electrodeposition mode to finish copper extraction. The process is simple and low in cost, and can be used for extracting low-concentration copper.
Description
Technical Field
The invention belongs to the technical field of copper extraction, and particularly relates to a copper extraction process of low-concentration acid leaching solution of ores.
Background
The wet copper extraction is widely concerned in the aspects of low-grade copper ore resources which are difficult to treat, copper-bearing gold concentrate utilization and the like, and particularly the successful application of a high-selectivity copper extractant and a matched extraction process thereof in production promotes the development of the wet copper extraction industry.
In the traditional wet copper smelting process of low-grade refractory secondary copper oxide ores and secondary sulfide ores, copper in the low-grade refractory secondary copper oxide ores is leached by adopting leaching processes such as heap leaching, column leaching, tank leaching and the like, and a leaching solution is subjected to an extraction and back extraction process to obtain copper-rich liquid, and the copper-rich liquid is sent to an electrodeposition process. Chinese patent application CN1075170a discloses a chlorination leaching method for refractory copper oxide ores, and although the method provides a method for leaching copper oxide ores, which simplifies the process to a certain extent, the following disadvantages still exist: the product directly obtained by the method is copper powder, and purer copper can be obtained by further smelting, so that the cost and the energy consumption are increased.
Disclosure of Invention
In order to solve the problems, the invention provides a copper extraction process of low-concentration acid leaching solution of ores, which at least comprises the following steps:
(1) Preparing leaching liquid: collecting copper-containing ore and crushing; spraying leaching with leaching agent, and collecting leaching solution;
(2) Copper extraction by electrodeposition: filling the leaching solution into a liquid storage barrel, sucking the copper-enriched solution into an electrodeposition tank of an electrodeposition device, and adsorbing copper ions in the leaching solution to a cathode of the electrodeposition tank in an electrodeposition mode to finish copper extraction.
As a preferred technical scheme, the ore lump size of the crushed copper-containing ore is less than 30mm.
As a preferable technical scheme, the number of the electrodeposition tanks is 1-10.
As a preferable technical scheme, when the number of the electrodeposition tanks is 2-10, copper extraction operation treatment is carried out between the electrodeposition tanks in a parallel or serial mode.
As a preferable technical scheme, the cathode is of a cylindrical structure, and a strip-shaped opening is formed along the axial direction.
As a preferable technical scheme, the cathode is provided with 3 filtering holes.
As a preferred embodiment, the cathode is provided with anodes both inside and outside.
As a preferable technical scheme, one end of the cathode is arranged on the stirring assembly, so that rotation can be realized.
As a preferable technical scheme, the rotating speed of the cathode is 100-120 r/min.
The invention also provides a copper sheet with purity of more than 99.6%, which is prepared by the copper extraction process.
The beneficial effects are that:
1. the copper extraction process provided by the invention realizes the extraction of copper in the low-concentration acid leaching solution of the ore, and has the advantages of simple and easy operation, low production cost, energy conservation, pollution reduction, and environmental benefit, economic benefit and social benefit improvement.
2. The number of the electrodeposition tanks can be multiple, and copper extraction operation treatment is performed among the electrodeposition tanks in a parallel or serial mode, so that copper extraction efficiency and copper extraction capacity are greatly improved.
3. The cathode is of a cylindrical structure, a strip-shaped opening is formed in the axial direction, and 3 filtering holes are formed in the cathode, so that deposition liquid can enter the cathode and is uniformly dispersed outside the cathode, the adsorption of deposited copper is enhanced, the deposition area is increased, the deposition efficiency is improved, and in addition, the deposited copper layer is also convenient to strip.
4. One end of the cathode is arranged on the stirring assembly, so that the cathode can rotate at 100-120 r/min, the flow of deposition liquid in the electrodeposition tank can be enhanced, the concentration of copper ions is kept uniform, the phenomenon that the concentration of copper ions close to the cathode solution is reduced and the concentration of copper ions far away from the cathode is high is avoided, and the deposition efficiency is improved. And the concave-convex surface of the deposition layer can be reduced, so that the deposition layer is smoother.
Detailed Description
The disclosure of the present invention will be further understood in conjunction with the following detailed description of the preferred embodiments of the invention, including examples. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. If the definition of a particular term disclosed in the prior art is inconsistent with any definition provided in the present invention, the definition of the term provided in the present invention controls.
As used herein, unless the context clearly indicates otherwise, the absence of a limitation to a plurality of features is also intended to include the plurality of features. It will be further understood that the terms "made of …" and "comprising," as used herein, are synonymous with "including," "comprising," "having," "including," and/or "containing," and when used in this specification, mean the stated composition, step, method, article, or apparatus, but do not preclude the presence or addition of one or more other compositions, steps, methods, articles, or apparatus. Furthermore, when describing embodiments of the present invention, the use of "preferred," "more preferred," etc. refers to embodiments of the present invention that may provide certain benefits in some instances. However, other embodiments may be preferred under the same or other circumstances. In addition, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention.
In order to solve the above problems, a first aspect of the present invention provides a copper extraction process for low-concentration acid leaching of ores, comprising at least the steps of:
(1) Preparing leaching liquid: collecting copper-containing ore and crushing; spraying leaching with leaching agent, and collecting leaching solution; the method for preparing the leaching solution has the advantages of simple process, less equipment, low energy consumption and low production cost.
(2) Copper extraction by electrodeposition: filling the leaching solution into a liquid storage barrel, sucking the copper-enriched solution into an electrodeposition tank of an electrodeposition device, and adsorbing copper ions in the leaching solution to a cathode of the electrodeposition tank in an electrodeposition mode to finish copper extraction.
In order to increase the leachability of the ore and the permeability of the heap, to avoid the occurrence of flow irregularities, blockages, channeling etc., to increase metal recovery, to reduce the consumption of leaching agents and to increase leaching efficiency, in some preferred embodiments the copper-containing ore has a bulk of less than 30mm after crushing.
In some preferred embodiments, the leaching agent comprises at least one of dilute sulfuric acid, dilute nitric acid, dilute hydrochloric acid, ammonium carbonate, ammonium bicarbonate, sodium bicarbonate, permanganate, hydrogen peroxide, chlorate, bacterial liquid. More preferably dilute sulfuric acid.
In some preferred embodiments, the number of electrodeposition cells is 1 to 10.
In some preferred embodiments, when the number of the electrodeposition tanks is 2-10, the copper extraction operations can be performed simultaneously in parallel or in series between the electrodeposition tanks. The electrodeposition tanks are connected in parallel, so that the leaching liquid amount for extracting copper can be increased, and the copper extraction efficiency is improved; the electrodeposition tanks are connected in series, so that copper extraction of the leaching solutions with different copper contents can be realized, namely, after copper extraction of the front electrodeposition tank, the copper content of the leaching solution is reduced, and copper ions in the leaching solution can be extracted to the cathode to the greatest extent through continuous copper extraction of the electrodeposition tank connected in series. In some preferred embodiments, after multiple copper extractions in a series of electrodeposition tanks, the initial 1-2g/L copper-containing leachate may be extracted to a copper content of less than 0.2mg/L, greatly improving copper extraction capacity.
In some preferred embodiments, the cathode has a cylindrical structure, and a strip-shaped opening is axially formed. The deposition liquid can enter the inside and the outside of the cathode, the deposition area is increased, the deposition efficiency is improved, and in addition, the deposited copper layer is also convenient to strip.
In some preferred embodiments, 3 filter holes are formed in the cathode, so that the deposition solution can be dispersed conveniently, the deposition efficiency is improved, and the adsorption of the deposited copper is enhanced.
In some preferred embodiments, the inside and the outside of the cathode are provided with anodes, so that copper can be deposited on the inside and the outside of the cathode, and the electrodeposition rate of copper is effectively improved.
In some preferred embodiments, one end of the cathode is disposed on the stirring assembly, enabling rotation.
In some preferred embodiments, the rotational speed of the cathode is 100 to 120r/min. The flow of the deposition solution in the electrodeposition tank can be enhanced, the concentration of copper ions is kept uniform, and the phenomenon that the concentration of copper ions close to the cathode solution is reduced and the concentration of copper ions far away from the cathode is high is avoided, so that the deposition efficiency is improved. And the concave-convex surface of the deposition layer can be reduced, so that the deposition layer is smoother.
The invention also provides a copper sheet with purity of more than 99.6%, which is prepared by the copper extraction process.
The present invention will be specifically described below by way of examples. It is noted herein that the following examples are given solely for the purpose of further illustration and are not to be construed as limitations on the scope of the invention, as will be apparent to those skilled in the art in light of the foregoing disclosure.
In addition, the raw materials used are commercially available unless otherwise indicated.
Examples
The technical scheme of the present invention is described in detail below by way of examples, but the scope of the present invention is not limited to the examples.
Example 1
Example 1 provides a copper extraction process for low-concentration acid leaching of ores, comprising at least the following steps:
(1) Preparing leaching liquid: collecting low-grade secondary copper oxide ore generated in the copper ore wet smelting process, and crushing until the ore block size is less than 30mm; spraying and leaching with 3mol/L dilute sulfuric acid at a spraying strength of 0.3L/m 2 min, collecting the leaching solution, and detecting the copper ion content in the leaching solution to be 1.8g/L.
(2) Copper extraction by electrodeposition: the leaching solution is filled into a liquid storage barrel, and enters an electrodeposition groove of an electrodeposition device through a liquid suction pipe, wherein a stirring assembly is arranged at the bottom of the electrodeposition groove, one end of a cathode is arranged on the stirring assembly so as to rotate, the cathode is of a cylindrical structure, a strip-shaped opening with the width of 1.5mm is axially formed, 3 evenly-distributed liquid passing holes are formed in the upper end of the cathode, and anodes are arranged inside and outside the cathode. And (3) opening a switch of the electrodeposition device, setting the voltage to be 1.3V, sucking the leaching solution into the electrodeposition tank from the liquid storage barrel through the liquid suction pipe, and setting the rotating speed of the cathode to be 110r/min for electrodepositing copper. After the electrodeposition of copper is completed, a copper layer is obtained on the cathode. And detecting the copper ion content of the leaching solution after copper extraction.
Example 2
Example 2 provides a copper extraction process for low-concentration acid leaching of ores, comprising at least the following steps:
(1) Preparing leaching liquid: collecting low-grade secondary copper oxide ore generated in the copper ore wet smelting process, and crushing until the ore block size is less than 30mm; spraying and leaching with 3mol/L dilute sulfuric acid at a spraying strength of 0.3L/m 2 min, collecting the leaching solution, and detecting the copper ion content in the leaching solution to be 1.8g/L.
(2) Copper extraction by electrodeposition: the leaching solution is filled into a liquid storage barrel, and enters electrodeposition tanks of an electrodeposition device through a liquid suction pipe, wherein the two electrodeposition tanks are connected in parallel, namely, the two electrodeposition tanks are respectively connected with the liquid storage barrel through a washing solution pipe. Wherein the bottom of every electrodeposition groove is provided with stirring subassembly, and the one end of negative pole is put on stirring subassembly to can rotate, the negative pole is cylindric structure, has seted up wide 1.5 mm's bar opening along the axial, and the upper end of negative pole is provided with 3 evenly distributed through liquid hole, and the inside and outside of negative pole all is provided with the positive pole. And (3) opening a switch of the electrodeposition device, setting the voltage of the two electrodeposition tanks to be 1.3V, sucking leaching liquid into the two electrodeposition tanks from a liquid storage barrel in a decibel mode through a liquid suction pipe, and setting the rotation speed of a cathode to be 110r/min for electrodepositing copper. After the end of the electrodeposition of copper, a copper layer was obtained on the cathodes of the two electrodeposition tanks. And detecting the copper ion content of the leaching solution after copper extraction.
Example 3
Example 3 provides a copper extraction process for low concentration acid leaching of ores, comprising at least the following steps:
(1) Preparing leaching liquid: collecting low-grade secondary copper oxide ore generated in the copper ore wet smelting process, and crushing until the ore block size is less than 30mm; spraying and leaching with 3mol/L dilute sulfuric acid at a spraying strength of 0.3L/m 2 min, collecting the leaching solution, and detecting the copper ion content in the leaching solution to be 1.8g/L.
(2) Copper extraction by electrodeposition: the leaching solution is filled into a liquid storage barrel and enters electrodeposition tanks of an electrodeposition device through liquid suction pipes, wherein the two electrodeposition tanks are connected in series, namely, a liquid discharge pipe of a first electrodeposition tank is connected with a liquid suction pipe of a second electrodeposition tank, and the leaching solution subjected to electrodeposition copper extraction in the first electrodeposition tank is subjected to continuous electrodeposition copper extraction treatment in the second electrodeposition tank. Wherein the bottom of every electrodeposition groove is provided with stirring subassembly, and the one end of negative pole is put on stirring subassembly to can rotate, the negative pole is cylindric structure, has seted up wide 1.5 mm's bar opening along the axial, and the upper end of negative pole is provided with 3 evenly distributed through liquid hole, and the inside and outside of negative pole all is provided with the positive pole. Opening the switch of the electrodeposition device, wherein the voltage of the first electrodeposition tank is set to be 1.2V, and the voltage of the second electrodeposition tank is set to be 1.3V; and sucking the leaching solution into the first electrodeposition tank from the liquid storage barrel through a liquid suction pipe, wherein the rotation speed of the cathode is set to be 110r/min for electrodepositing copper. After the end of the electrodeposition of copper, a copper layer was obtained on the cathodes of the two electrodeposition tanks. And detecting the copper ion content of the leaching solution after copper extraction.
Example 4
Example 4 provides a copper extraction process for low concentration acid leaching of ores, comprising at least the following steps:
(1) Preparing leaching liquid: collecting low-grade secondary copper oxide ore generated in the copper ore wet smelting process, and crushing until the ore block size is less than 30mm; spraying and leaching with 3mol/L dilute sulfuric acid at a spraying strength of 0.3L/m 2 min, collecting the leaching solution, and detecting the copper ion content in the leaching solution to be 1.8g/L.
(2) Copper extraction by electrodeposition: the leaching solution is filled into a liquid storage barrel, and enters an electrodeposition groove of an electrodeposition device through a liquid suction pipe, wherein a stirring assembly is arranged at the bottom of the electrodeposition groove, one end of a cathode is arranged on the stirring assembly so as to rotate, the cathode is of a cylindrical structure, a strip-shaped opening with the width of 1.5mm is axially formed, 3 evenly-distributed liquid passing holes are formed in the upper end of the cathode, and anodes are arranged inside and outside the cathode. And (3) opening a switch of the electrodeposition device, setting the voltage to be 1.3V, sucking the leaching solution into the electrodeposition tank from the liquid storage barrel through the liquid suction pipe, and setting the rotating speed of the cathode to be 120r/min for electrodepositing copper. After the electrodeposition of copper is completed, a copper layer is obtained on the cathode. And detecting the copper ion content of the leaching solution after copper extraction.
Example 5
Example 5 provides a copper extraction process for low concentration acid leaching of ores, comprising at least the steps of:
(1) Preparing leaching liquid: collecting low-grade secondary copper oxide ore generated in the copper ore wet smelting process, and crushing until the ore block size is less than 30mm; spraying and leaching with 3mol/L dilute sulfuric acid at a spraying strength of 0.3L/m 2 min, collecting the leaching solution, and detecting the copper ion content in the leaching solution to be 1.8g/L.
(2) Copper extraction by electrodeposition: the leaching solution is filled into a liquid storage barrel, and enters an electrodeposition groove of an electrodeposition device through a liquid suction pipe, wherein a stirring assembly is arranged at the bottom of the electrodeposition groove, one end of a cathode is arranged on the stirring assembly so as to rotate, the cathode is of a cylindrical structure, a strip-shaped opening with the width of 1.5mm is axially formed, 3 evenly-distributed liquid passing holes are formed in the upper end of the cathode, and anodes are arranged inside and outside the cathode. And (3) opening a switch of the electrodeposition device, setting the voltage to be 1.1V, sucking the leaching solution into the electrodeposition tank from the liquid storage barrel through the liquid suction pipe, and setting the rotating speed of the cathode to be 110r/min for electrodepositing copper. After the electrodeposition of copper is completed, a copper layer is obtained on the cathode. And detecting the copper ion content of the leaching solution after copper extraction.
Comparative example 1
Comparative example 1 provides a copper extraction process for low concentration acid leaching of ores, comprising at least the following steps:
(1) Preparing leaching liquid: collecting low-grade secondary copper oxide ore generated in the copper ore wet smelting process, and crushing until the ore block size is less than 30mm; spraying and leaching with 3mol/L dilute sulfuric acid at a spraying strength of 0.3L/m 2 min, collecting the leaching solution, and detecting the copper ion content in the leaching solution to be 1.8g/L.
(2) Copper extraction by electrodeposition: the leaching solution is filled into a liquid storage barrel, and enters an electrodeposition groove of an electrodeposition device through a liquid suction pipe, wherein a stirring assembly is arranged at the bottom of the electrodeposition groove, one end of a cathode is arranged on the stirring assembly so as to rotate, the cathode is of a cylindrical structure, a strip-shaped opening with the width of 1.5mm is axially formed, 3 evenly-distributed liquid passing holes are formed in the upper end of the cathode, and anodes are arranged inside and outside the cathode. The switch of the electrodeposition device is turned on, the voltage is set to be 1.3V, the leaching liquid is sucked into the electrodeposition tank from the liquid storage barrel through the liquid suction pipe, and the cathode does not rotate. After the electrodeposition of copper is completed, a copper layer is obtained on the cathode. And detecting the copper ion content of the leaching solution after copper extraction.
Comparative example 2
Comparative example 2 provides a copper extraction process for low concentration acid leaching of ores, comprising at least the steps of:
(1) Preparing leaching liquid: collecting low-grade secondary copper oxide ore generated in the copper ore wet smelting process, and crushing until the ore block size is less than 30mm; spraying and leaching with 3mol/L dilute sulfuric acid at a spraying strength of 0.3L/m 2 min, collecting the leaching solution, and detecting the copper ion content in the leaching solution to be 1.8g/L.
(2) Copper extraction by electrodeposition: the leaching solution is filled into a liquid storage barrel, and enters an electrodeposition groove of an electrodeposition device through a liquid suction pipe, wherein the bottom of the electrodeposition groove is provided with a stirring assembly, one end of a cathode is arranged on the stirring assembly so as to rotate, the cathode is of a cylindrical structure, 3 evenly-distributed liquid passing holes are formed in the upper end of the cathode, and anodes are arranged inside and outside the cathode. And (3) opening a switch of the electrodeposition device, setting the voltage to be 1.3V, sucking the leaching solution into the electrodeposition tank from the liquid storage barrel through the liquid suction pipe, and setting the rotating speed of the cathode to be 110r/min for electrodepositing copper. After the electrodeposition of copper is completed, a copper layer is obtained on the cathode. And detecting the copper ion content of the leaching solution after copper extraction.
Evaluation of Performance
1. Copper ion content test
Detecting the copper ion content of the solution in the electrodeposition tank after the electrodeposition of the above examples and comparative examples by using an ICAP7200 inductively coupled plasma emission spectrometer according to the HJ 776-2015 standard of the inductively coupled plasma emission spectrometry; the results are shown in Table 1.
2. Copper layer external observation test
The copper layers prepared in the above examples and comparative examples were visually inspected, and if the copper layer was smooth and dense, the copper layer was judged to be acceptable, otherwise, the copper layer was judged to be unacceptable, and the results are shown in table 1.
TABLE 1
According to the embodiment and the comparative example, the invention provides a copper extraction process of low-concentration acid leaching solution of ores, which can effectively extract copper ions in the low-concentration acid leaching solution of ores, and the extracted copper ions are directly deposited into a flat and compact copper layer on a negative electrode.
Finally, it should be understood that the foregoing description is merely illustrative of the preferred embodiments of the present invention, and that no limitations are intended to the scope of the invention, as defined by the appended claims.
Claims (1)
1. The copper extraction process of the ore low-concentration acid leaching solution is characterized by comprising the following steps of:
(1) Preparing leaching liquid: collecting low-grade secondary copper oxide ore generated in the copper ore wet smelting process, and crushing until the ore block size is less than 30mm; spraying and leaching with 3mol/L dilute sulfuric acid at a spraying strength of 0.3L/m 2 min, collecting leaching liquid, and detecting the copper ion content in the leaching liquid to be 1.8g/L;
(2) Copper extraction by electrodeposition: filling the leaching solution into a liquid storage barrel, and enabling the leaching solution to enter electrodeposition tanks of an electrodeposition device through liquid suction pipes, wherein the two electrodeposition tanks are connected in series, namely, a liquid discharge pipe of a first electrodeposition tank is connected with a liquid suction pipe of a second electrodeposition tank, and the leaching solution subjected to electrodeposition copper extraction in the first electrodeposition tank is subjected to continuous electrodeposition copper extraction treatment in the second electrodeposition tank; the bottom of each electrodeposition tank is provided with a stirring assembly, one end of a cathode is arranged on the stirring assembly so as to rotate, the cathode is of a cylindrical structure, a strip-shaped opening with the width of 1.5mm is axially formed, 3 uniformly distributed liquid passing holes are formed in the upper end of the cathode, and anodes are arranged inside and outside the cathode; opening the switch of the electrodeposition device, wherein the voltage of the first electrodeposition tank is set to be 1.2V, and the voltage of the second electrodeposition tank is set to be 1.3V; sucking the leaching solution into a first electrodeposition tank from a liquid storage barrel through a liquid suction pipe, and electrodepositing copper by setting the rotating speed of a cathode to be 110 r/min; after the electrodepositing of copper is finished, a copper layer is obtained on the cathodes of the two electrodepositing tanks; and detecting the copper ion content of the leaching solution after copper extraction.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2123543C1 (en) * | 1993-04-19 | 1998-12-20 | ЭлектроКуппер Продактс Лимитед | Method of producing copper foil |
| CN101498009A (en) * | 2009-01-15 | 2009-08-05 | 湖南万容科技有限公司 | Method and equipment for recycling high purity copper block from low copper content waste liquor |
| CN104232924A (en) * | 2014-09-25 | 2014-12-24 | 河南工信华鑫环保科技有限公司 | Copper extraction and iron removal method of copper ore acid leaching liquid |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2123543C1 (en) * | 1993-04-19 | 1998-12-20 | ЭлектроКуппер Продактс Лимитед | Method of producing copper foil |
| CN101498009A (en) * | 2009-01-15 | 2009-08-05 | 湖南万容科技有限公司 | Method and equipment for recycling high purity copper block from low copper content waste liquor |
| CN104232924A (en) * | 2014-09-25 | 2014-12-24 | 河南工信华鑫环保科技有限公司 | Copper extraction and iron removal method of copper ore acid leaching liquid |
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