CN113430386A - Method for enriching copper and nickel by using secondary nickel return material of copper smelting furnace slag - Google Patents
Method for enriching copper and nickel by using secondary nickel return material of copper smelting furnace slag Download PDFInfo
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- CN113430386A CN113430386A CN202110604175.3A CN202110604175A CN113430386A CN 113430386 A CN113430386 A CN 113430386A CN 202110604175 A CN202110604175 A CN 202110604175A CN 113430386 A CN113430386 A CN 113430386A
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- nickel
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- 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
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- 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
- C22B15/0063—Hydrometallurgy
- C22B15/0065—Leaching or slurrying
- C22B15/0067—Leaching or slurrying with acids or salts thereof
- C22B15/0071—Leaching or slurrying with acids or salts thereof containing sulfur
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- 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
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0407—Leaching processes
- C22B23/0415—Leaching processes with acids or salt solutions except ammonium salts solutions
- C22B23/043—Sulfurated acids or salts thereof
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- 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
- C22B7/006—Wet processes
- C22B7/007—Wet processes by acid leaching
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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
- C25C1/06—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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The invention discloses a method for enriching copper and nickel by using secondary nickel return materials of copper smelting furnace slag, and belongs to the technical field of hydrometallurgy. The secondary nickel return material is copper slag return material with Cu/Ni not more than 2:1, which is obtained by carrying out multistage crushing, fine grinding and sorting on copper smelting slag, slurrying the secondary nickel return material in sulfuric acid solution to obtain slurry, and further presoaking and pressure leaching under normal pressure to obtain leachate enriched with nickel and copper. The method meets the requirement of the front liquid of the nickel electrolysis system, solves the problems of low metal yield, high production cost, high environmental protection pressure and the like in the traditional pyrogenic process treatment process, and has the outstanding characteristics of short production flow, high metal yield, low production cost, energy conservation and environmental protection.
Description
Technical Field
The invention belongs to the field of hydrometallurgy, and particularly relates to a method for enriching copper and nickel by using secondary nickel return materials of copper smelting furnace slag.
Background
The copper smelting slag is mainly Kaldo slag and self-heating slag, and granular and flaky copper slag return materials and secondary nickel return materials are produced through crushing, fine grinding and sorting. The granular and flaky copper slag return materials can be directly sent to a copper smelting return material for treatment, and the secondary nickel return materials are sent to a nickel pyrogenic process treatment system for batching treatment. But the pyrogenic recovery treatment of part of materials still has the defects of serious loss of valuable metals such as nickel, copper and the like and rising of energy consumption and production cost. Meanwhile, the recycling treatment amount is influenced by the copper-nickel content index and the batching factor, so that the copper-nickel content index and the batching factor cannot be utilized in time, a large amount of funds are occupied, and certain economic loss is caused to the production and the operation of enterprises. Therefore, research on the secondary nickel return wet treatment technology of the copper smelting slag is needed.
Disclosure of Invention
The invention aims to provide a method for enriching copper and nickel by using secondary nickel return materials of copper smelting furnace slag, so as to solve the problems in the background technology.
The invention adopts the following technical means, a method for enriching copper and nickel by using a secondary nickel return material of copper smelting furnace slag, wherein the secondary nickel return material is the copper slag return material with Cu/Ni of less than or equal to 2:1, which is obtained by carrying out multistage crushing, fine grinding and sorting on the copper smelting furnace slag, and the process flow comprises the following steps:
s1, pulping under normal pressure, namely mixing a sulfuric acid solution with acidity of 5-15 g/l and a secondary nickel return material according to the mass ratio of (4-6) to 1, and pulping under normal pressure at the temperature of 20-40 ℃ for 1-2 hours;
s2, normal-pressure presoaking: sending the pulpified ore pulp into a normal-pressure reaction tank, and controlling the presoaking temperature: and (2) presoaking time at 80-90 ℃: 2-3 hours;
s3, pressure leaching: feeding the ore pulp subjected to the normal-pressure pre-soaking treatment into a pressure reaction kettle, controlling the leaching temperature to be 240-280 ℃, the pressure leaching pressure to be 3-5 MPa and the pressure leaching time to be 6-8 hours in the whole pressure leaching process;
s4, liquid-solid separation: and (3) performing solid-liquid separation on the ore pulp subjected to pressure leaching to obtain a pressure leaching solution rich in nickel and copper and pressure leaching residues poor in nickel, externally adding the pressure leaching residues into other process flows, circulating part of the pressure leaching solution to S1 to be used as a pre-slurrying solution, further enriching the concentration of metal ions, and externally adding the rest of the pressure leaching solution into a nickel electrolysis system for treatment.
Further, typical components of the secondary nickel return material are Ni: 14.94%, Cu: 22.14%, Co: 0.45%, Fe: 11.02%, S:1.27%, Si: 18.76 percent.
Compared with the prior art, the invention has the following beneficial effects:
through research and test on the normal-pressure and pressure leaching enrichment copper-nickel technology of secondary nickel return materials, the unique process flow for recovering copper and nickel through normal-pressure presoaking-pressure leaching is determined, the problems of low metal yield, high production cost, high environmental protection pressure and the like in the traditional pyrogenic process treatment process are solved, and the method has the outstanding characteristics of short production flow, high metal yield, low production cost, energy conservation and environmental protection.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
A method for enriching copper and nickel from secondary nickel return materials of copper smelting furnace slag is characterized by obtaining a leaching solution for enriching nickel and copper through normal-pressure presoaking and pressure leaching. The secondary nickel return material comprises the following typical components: ni content: 14.94%, Cu: 22.14%, Co: 0.45%, Fe: 11.02%, S:1.27%, Si: 18.76 percent.
The process flow comprises the following steps:
s1, pulping under normal pressure, namely mixing a sulfuric acid solution with the acidity of 10g/l and a secondary nickel return material according to the mass ratio of 5:1, and pulping under normal pressure at the temperature of 35 ℃ for 2 hours;
s2, normal-pressure presoaking: feeding the pulpified ore pulp into a normal-pressure reaction tank, controlling the presoaking temperature to be 85 ℃, and presoaking for 2 hours;
s3, pressure leaching: conveying the ore pulp subjected to normal-pressure pre-soaking treatment into a pressure reaction kettle, controlling the leaching temperature to be 260 ℃, the pressure leaching pressure to be 4.5MPa and the pressure leaching time to be 6 hours in the whole pressure leaching process;
s4, liquid-solid separation: carrying out solid-liquid separation on the ore pulp subjected to pressure leaching by a filter press to obtain a pressure leaching solution rich in nickel and copper and pressure leaching slag poor in nickel, wherein the obtained pressure leaching solution comprises the following components: 60.85g/l Ni, 42.24g/l Cu, 1.82g/l Co and 36.56g/l Fe. The pressure leaching slag is added into other process flows, and the components of the pressure leaching slag are as follows: 4.54% of Ni, 23.80% of Cu, 0.10% of Co, 3.10% of Fe, 2.82% of S, Si: 31.60 percent. And part of the pressurized leaching solution is recycled to S1 to be used as pre-slurrying solution, the concentration of metal ions is further enriched, and the rest is externally added to a nickel electrolysis system for treatment.
Claims (2)
1. A method for enriching copper and nickel by using secondary nickel return materials of copper smelting furnace slag is characterized in that the secondary nickel return materials are copper slag return materials with Cu/Ni less than or equal to 2:1, which are obtained by carrying out multistage crushing, fine grinding and sorting on the copper smelting furnace slag, and the process flow comprises the following steps:
s1, pulping under normal pressure, namely mixing a sulfuric acid solution with acidity of 5-15 g/l and a secondary nickel return material according to a mass ratio of 4-6: 1, and pulping under normal pressure at the temperature of 20-40 ℃ for 1-2 hours;
s2, normal-pressure presoaking: sending the pulpified ore pulp into a normal-pressure reaction tank, and controlling the presoaking temperature: and (2) presoaking time at 80-90 ℃: 2-3 hours;
s3, pressure leaching: feeding the ore pulp subjected to the normal-pressure pre-soaking treatment into a pressure reaction kettle, controlling the leaching temperature to be 240-280 ℃, the pressure leaching pressure to be 3-5 MPa and the pressure leaching time to be 6-8 hours in the whole pressure leaching process;
s4, liquid-solid separation: and (3) performing solid-liquid separation on the ore pulp subjected to pressure leaching to obtain a pressure leaching solution rich in nickel and copper and pressure leaching residues poor in nickel, externally adding the pressure leaching residues into other process flows, circulating part of the pressure leaching solution to S1 to be used as a pre-slurrying solution, further enriching the concentration of metal ions, and externally adding the rest of the pressure leaching solution into a nickel electrolysis system for treatment.
2. The method for enriching copper and nickel in copper smelting slag secondary nickel return material according to claim 1, wherein the secondary nickel return material has typical components of Ni: 14.94%, Cu: 22.14%, Co: 0.45%, Fe: 11.02%, S:1.27%, Si: 18.76 percent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110604175.3A CN113430386A (en) | 2021-05-31 | 2021-05-31 | Method for enriching copper and nickel by using secondary nickel return material of copper smelting furnace slag |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110604175.3A CN113430386A (en) | 2021-05-31 | 2021-05-31 | Method for enriching copper and nickel by using secondary nickel return material of copper smelting furnace slag |
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| CN113430386A true CN113430386A (en) | 2021-09-24 |
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| CN202110604175.3A Pending CN113430386A (en) | 2021-05-31 | 2021-05-31 | Method for enriching copper and nickel by using secondary nickel return material of copper smelting furnace slag |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2363969A1 (en) * | 2001-11-26 | 2003-05-26 | Walter Curlook | Process for the recovery of residual metal values from smelter waste slags, and from converter slags |
| JP2013209732A (en) * | 2012-03-30 | 2013-10-10 | Pan Pacific Copper Co Ltd | Method for recovering nickel |
| CN105087949A (en) * | 2015-08-26 | 2015-11-25 | 昆明理工大学 | Method for selectively leaching cobalt, nickel and copper in converting slag of converter |
| CN105400960A (en) * | 2015-11-20 | 2016-03-16 | 金川集团股份有限公司 | Method for pressurizing cobalt-rich copper matte to leach out nickel and cobalt and remove iron |
-
2021
- 2021-05-31 CN CN202110604175.3A patent/CN113430386A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2363969A1 (en) * | 2001-11-26 | 2003-05-26 | Walter Curlook | Process for the recovery of residual metal values from smelter waste slags, and from converter slags |
| JP2013209732A (en) * | 2012-03-30 | 2013-10-10 | Pan Pacific Copper Co Ltd | Method for recovering nickel |
| CN105087949A (en) * | 2015-08-26 | 2015-11-25 | 昆明理工大学 | Method for selectively leaching cobalt, nickel and copper in converting slag of converter |
| CN105400960A (en) * | 2015-11-20 | 2016-03-16 | 金川集团股份有限公司 | Method for pressurizing cobalt-rich copper matte to leach out nickel and cobalt and remove iron |
Non-Patent Citations (3)
| Title |
|---|
| 丁忠浩 翁达编著: "《固体和气体废弃物再生与利用》", 31 March 2006, 国防工业出版社 * |
| 喻正军等: "常压下硫酸体系中钴冰铜的浸出", 《中南大学学报(自然科学版)》 * |
| 邓彤: "镍钴的加压氧化浸出", 《湿法冶金》 * |
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Application publication date: 20210924 |