CN113481376B - Method for sorting, recovering and treating copper and nickel in copper smelting furnace slag - Google Patents
Method for sorting, recovering and treating copper and nickel in copper smelting furnace slag Download PDFInfo
- Publication number
- CN113481376B CN113481376B CN202110603039.2A CN202110603039A CN113481376B CN 113481376 B CN113481376 B CN 113481376B CN 202110603039 A CN202110603039 A CN 202110603039A CN 113481376 B CN113481376 B CN 113481376B
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- Prior art keywords
- copper
- nickel
- slag
- copper smelting
- furnace slag
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- 239000010949 copper Substances 0.000 title claims abstract description 123
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 113
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 110
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 239000002893 slag Substances 0.000 title claims abstract description 75
- 238000003723 Smelting Methods 0.000 title claims abstract description 55
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 28
- 230000001698 pyrogenic effect Effects 0.000 claims abstract description 10
- 238000004064 recycling Methods 0.000 claims abstract description 10
- 238000011084 recovery Methods 0.000 claims abstract description 7
- 238000001238 wet grinding Methods 0.000 claims description 7
- 238000009837 dry grinding Methods 0.000 claims description 6
- 239000000706 filtrate Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims description 2
- 238000006297 dehydration reaction Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 238000003672 processing method Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- -1 nickel metals Chemical class 0.000 abstract description 2
- 239000004615 ingredient Substances 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 description 5
- 229910000570 Cupronickel Inorganic materials 0.000 description 2
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 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
- 238000005188 flotation Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000009853 pyrometallurgy Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- WWNBZGLDODTKEM-UHFFFAOYSA-N sulfanylidenenickel Chemical compound [Ni]=S WWNBZGLDODTKEM-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0028—Smelting or converting
- C22B15/003—Bath smelting or converting
- C22B15/0034—Bath smelting or converting in rotary furnaces, e.g. kaldo-type furnaces
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/02—Obtaining nickel or cobalt by dry processes
-
- 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
Abstract
The invention discloses a method for sorting and recycling copper and nickel in copper smelting slag. The obtained granular copper slag return material contains more than or equal to 85 percent of Cu, the flaky copper slag return material contains more than or equal to 92 percent of Cu, the treatment condition of the return material of the copper pyrogenic process system is met, and the return material can be directly treated by the copper pyrogenic process system; the obtained secondary nickel return material Cu/Ni is less than or equal to 2:1, so that the copper amount of a copper smelting nickel return material directly returning to a nickel pyrometallurgical system is reduced, the requirement of the nickel pyrometallurgical system on treatment of ingredients is met, the classification treatment of copper smelting nickel slag is realized, and the recovery rate of copper and nickel metals is improved.
Description
Technical Field
The invention belongs to the technical field of nonferrous metallurgy, and particularly relates to a method for sorting, recovering and treating copper and nickel in copper smelting slag.
Background
Most of the pyrometallurgical processes for nickel adopt nickel-containing ores such as nickel sulfide and the like, and the ores are associated with polymetallic copper-nickel in nature, so that copper-nickel separation is performed by flotation to obtain nickel concentrate with high nickel content and copper concentrate with high copper content, and then the nickel concentrate and the copper concentrate are respectively sent to a nickel pyrometallurgical system and a copper pyrometallurgical system for smelting. However, the separated copper concentrate still contains a small amount of nickel, and the part of nickel is discharged in the form of copper smelting slag in the copper smelting process, and the copper smelting slag has high copper content and cannot be directly sent to a nickel pyrometallurgical system for recycling treatment, and the nickel has high loss in the copper pyrometallurgical system, so that the nickel cannot be directly sent to the copper pyrometallurgical system for treatment. In the past, the copper smelting furnace slag is piled up and overstocked, and the resource is greatly wasted. Therefore, a method for separating and recovering copper and nickel in copper smelting slag is needed.
Disclosure of Invention
The invention aims to provide a method for separating and recycling copper and nickel in copper smelting slag, which aims to solve the problems in the background technology.
The invention adopts the following technical means, a method for separating and recycling copper and nickel in copper smelting slag, which comprises the following process flows: coarsely crushing, intermediately crushing and finely crushing the copper smelting furnace slag by a crusher, then sending the copper smelting furnace slag to a rod mill for dry grinding, and screening the copper smelting furnace slag by a drum screen after dry grinding to obtain granular copper slag return materials; feeding the residual copper smelting furnace slag after screening into a ball mill for wet grinding to obtain copper smelting furnace slag pulp, and dehydrating the copper smelting furnace slag pulp by a vibrating dehydration screen to obtain flaky copper slag return materials; and then sending the slurry as the undersize product to a filter press for filtering to obtain secondary nickel return material and filtrate, and returning the filtrate to the wet grinding process for recycling.
Further, the copper smelting slag comprises Kaldo slag containing copper and nickel and self-heating furnace slag.
Further, in the coarse crushing procedure, the copper smelting furnace slag is crushed to the granularity of less than or equal to 900 mm.
Further, in the intermediate crushing procedure, the copper smelting furnace slag is crushed to a granularity of less than or equal to 500 mm.
Further, the fine crushing procedure of the invention crushes the copper smelting furnace slag to the granularity of less than or equal to 200 mm.
Furthermore, the grain size of the returned material of the granular copper slag is 5-20 mm, the content of Cu is more than or equal to 85 percent, and the returned material can be directly returned to a copper pyrogenic process system for recovery treatment.
Furthermore, the sheet-shaped copper slag returning piece has the diameter of 1-5 mm, contains more than or equal to 92% of Cu, and can be directly returned to a copper pyrogenic process system for recovery treatment.
Furthermore, Cu/Ni in the secondary nickel return material with the reduced copper content is less than or equal to 2:1, so that the treatment requirement of a nickel fire method system is met, and the secondary nickel return material can be directly returned to the nickel fire method system for recovery treatment.
The invention has the beneficial effects that: the copper smelting nickel slag is subjected to multistage crushing, fine grinding and sorting to produce copper slag return materials and secondary nickel return materials, so that the copper content entering a nickel pyrogenic process system is reduced, the classified recovery treatment of the copper smelting slag is realized, and the method has great significance for improving the recovery rate of copper and nickel metals and accelerating waste material change.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, a method for sorting and recovering copper and nickel in copper smelting slag comprises the following process flows: carrying out coarse crushing on the copper smelting furnace slag by using a jaw crusher, so that the granularity of the copper smelting furnace slag after coarse crushing is less than or equal to 900 mm; the copper smelting slag is Kaldo slag containing copper and nickel and self-heating furnace slag, and the typical components are as follows: ni: 15.74%, Cu: 37.67%, Fe: 4.59%, Co: 0.13 percent. Carrying out medium crushing on the copper smelting furnace slag after coarse crushing by using a jaw crusher to ensure that the granularity of the copper smelting furnace slag after medium crushing is less than or equal to 500 mm; and finely crushing the copper smelting furnace slag after the medium crushing by using a jaw crusher to ensure that the granularity of the copper smelting furnace slag after the fine crushing is less than or equal to 200mm, conveying the copper smelting furnace slag after the fine crushing into a rod mill by using a belt conveyer for dry grinding, conveying the copper smelting furnace slag after the dry grinding of the rod mill into a drum sieve by using the belt conveyer for sieving to obtain granular copper slag return materials with the granularity of 5-20 mm, and sorting and extracting the granular copper slag return materials as undersize materials, wherein the granular copper slag return materials contain Cu: 87.9 percent. The copper smelting slag that is surplus in the sieve is sent into the ball mill through the belt conveyor again and is carried out wet-milling, and copper smelting slag ore pulp is dehydrated through the vibration dewatering screen after the wet-milling, and the piece footpath is selected separately and is extracted as oversize at 1 ~ 5 mm's slice copper slag returning charge, and the piece copper slag returning charge contains Cu: 93.4 percent. And (3) carrying out filter pressing on the residual slurry by a filter press to produce a secondary nickel return material and filtrate with reduced copper content, wherein the secondary nickel return material Cu/Ni =1.97: 1. The filtrate is used for recycling the liquid before the ball mill wet grinding process, so as to further enrich the nickel. Returning materials of the granular and flaky copper slag are sent to a copper pyrogenic process system for recycling treatment, and returning materials of the secondary nickel are sent to a nickel pyrogenic process system for recycling treatment.
Claims (7)
1. A copper and nickel separation recovery processing method in copper smelting slag is characterized in that: coarsely crushing, intermediately crushing and finely crushing the copper smelting furnace slag by a crusher, then sending the copper smelting furnace slag to a rod mill for dry grinding, and screening the copper smelting furnace slag by a drum screen after dry grinding to obtain granular copper slag return materials; feeding the copper smelting furnace slag left by the screen into a ball mill for wet grinding to obtain copper smelting furnace slag pulp, and dehydrating the copper smelting furnace slag pulp by a vibrating dehydration screen to obtain sheet copper slag return; then sending the slurry as the undersize to a filter press for filtering to obtain secondary nickel return material and filtrate, and returning the filtrate to the wet grinding process for recycling; the copper smelting slag comprises Kaldo slag containing copper and nickel and self-heating furnace slag.
2. The method for sorting and recovering copper and nickel in copper smelting slag according to claim 1, characterized by comprising the following steps: and in the coarse crushing procedure, the copper smelting furnace slag is crushed to the granularity of less than or equal to 900 mm.
3. The method for sorting and recovering copper and nickel in copper smelting slag according to claim 1, characterized by comprising the following steps: and in the intermediate crushing procedure, the copper smelting furnace slag is crushed to a granularity of less than or equal to 500 mm.
4. The method for sorting and recovering copper and nickel in copper smelting slag according to claim 1, characterized by comprising the following steps: and in the fine crushing procedure, the copper smelting furnace slag is crushed to the granularity of less than or equal to 200 mm.
5. The method for sorting and recovering copper and nickel in copper smelting slag according to claim 1, characterized by comprising the following steps: the grain size of the return material of the granular copper slag is 5-20 mm, the Cu content is more than or equal to 85%, and the return copper is recycled by a pyrogenic process system.
6. The method for sorting and recovering copper and nickel in copper smelting slag according to claim 1, characterized by comprising the following steps: the diameter of the flaky copper slag returning piece is 1-5 mm, the content of Cu is more than or equal to 92%, and the copper returning pyrogenic process system is recycled.
7. The method for sorting and recovering copper and nickel in copper smelting slag according to claim 1, characterized by comprising the following steps: and (3) recovering and treating the secondary nickel return material by using a return nickel pyrogenic process system, wherein Cu/Ni in the secondary nickel return material is less than or equal to 2: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110603039.2A CN113481376B (en) | 2021-05-31 | 2021-05-31 | Method for sorting, recovering and treating copper and nickel in copper smelting furnace slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110603039.2A CN113481376B (en) | 2021-05-31 | 2021-05-31 | Method for sorting, recovering and treating copper and nickel in copper smelting furnace slag |
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| Publication Number | Publication Date |
|---|---|
| CN113481376A CN113481376A (en) | 2021-10-08 |
| CN113481376B true CN113481376B (en) | 2022-09-06 |
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| CN202110603039.2A Active CN113481376B (en) | 2021-05-31 | 2021-05-31 | Method for sorting, recovering and treating copper and nickel in copper smelting furnace slag |
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Citations (8)
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|---|---|---|---|---|
| US4717419A (en) * | 1982-03-18 | 1988-01-05 | Outokumpu Oy | Method for treating iron-bearing slags containing precious metals, particularly slags created in the smelting process of copper and nickel |
| US5593493A (en) * | 1995-06-26 | 1997-01-14 | Krofchak; David | Method of making concrete from base metal smelter slag |
| JP2012082505A (en) * | 2010-09-13 | 2012-04-26 | Pan Pacific Copper Co Ltd | Method for treating converter slag and method for smelting copper |
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| CN105177307A (en) * | 2015-09-06 | 2015-12-23 | 中南大学 | Method for recycling copper-nickel-cobalt from low grade nickel matte through abrasive flotation separation |
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Family Cites Families (3)
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| US20120132032A1 (en) * | 2010-11-29 | 2012-05-31 | Basf Corporation | Magnetic recovery of valuables from slag material |
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| CN105817337A (en) * | 2016-05-10 | 2016-08-03 | 中国瑞林工程技术有限公司 | Method for recycling copper from copper smelting slag |
-
2021
- 2021-05-31 CN CN202110603039.2A patent/CN113481376B/en active Active
Patent Citations (8)
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| US5593493A (en) * | 1995-06-26 | 1997-01-14 | Krofchak; David | Method of making concrete from base metal smelter slag |
| JP2012082505A (en) * | 2010-09-13 | 2012-04-26 | Pan Pacific Copper Co Ltd | Method for treating converter slag and method for smelting copper |
| CN105358716A (en) * | 2013-05-14 | 2016-02-24 | 保尔伍斯股份有限公司 | Casting apparatus and method of controlling said apparatus |
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| CN105177307A (en) * | 2015-09-06 | 2015-12-23 | 中南大学 | Method for recycling copper-nickel-cobalt from low grade nickel matte through abrasive flotation separation |
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| CN113481376A (en) | 2021-10-08 |
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Effective date of registration: 20240412 Address after: 737104 No. 2 Lanzhou Road, Beijing Road Street, Jinchuan District, Jinchang City, Gansu Province Patentee after: Jinchuan Group Nickel Cobalt Co.,Ltd. Country or region after: China Address before: No.98, Jinchuan Road, Jinchuan District, Jinchang City, Gansu Province 737100 Patentee before: JINCHUAN GROUP Co.,Ltd. Country or region before: China |