CN105177283A - Deep leaching method of copper-containing alloy leaching tailings - Google Patents
Deep leaching method of copper-containing alloy leaching tailings Download PDFInfo
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- CN105177283A CN105177283A CN201410254313.XA CN201410254313A CN105177283A CN 105177283 A CN105177283 A CN 105177283A CN 201410254313 A CN201410254313 A CN 201410254313A CN 105177283 A CN105177283 A CN 105177283A
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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
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- 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 provides a deep leaching method of copper-containing alloy leaching tailings, and is used for solving the problem that tailings produced from atmospheric pressure leaching of a copper-containing alloy cannot be treated. The method comprises the following treatment steps: after the copper-containing alloy is subjected to atmospheric pressure leaching, basically dissolving copper, cobalt, iron, nickel and other metal elementary substances and oxides completely, and allowing all copper sulfide to enter the tailings; in an airtight high-temperature and high-pressure reaction kettle, carrying out a reaction of copper sulfide with sulfuric acid and oxygen, to obtain a relatively pure copper sulfate solution; and after solid-liquid separation of the obtained solution, directly mixing with an electric rich liquid, carrying out electrodeposition operation, and generating electro-deposited copper. The process method is simple, the amount of the remaining tailings is small after leaching, and copper in the copper-containing alloy general leaching tailings is recycled to a great extent; at the same time, because the content of other metal impurities in the atmospheric pressure leaching tailings is quite low, so that the solution obtained from deep leaching is relatively pure and is directly mixed into the electric rich liquid for electrodeposition operation after the solid-liquid separation, and the cathode copper can be produced.
Description
Technical field
The present invention relates to non-ferrous metal field of hydrometallurgy, particularly relate to the degree of depth leaching method that a kind of copper-bearing alloy leaches mine tailing.
Background technology
Hydrometallurgy utilizes leaching agent by ore, concentrate, the metal component of valency is had to dissolve in the solution or with new solid separation in the materials such as calcining, carry out metal separation, the science and technology of enrichment and extraction, various leaching-out technique and technique comparative maturity, wherein sulfuric acid system extract technology is at cobalt, nickel, copper, the field of hydrometallurgy of the non-ferrous metals such as zinc is widely used, but in sulfuric acid system extract technology, sulfide does not participate in reaction, after utilizing sulfuric acid leaching technique to leach copper-bearing alloy material under normal pressure, copper, cobalt, iron, the metal simple-substances such as nickel and oxide compound dissolve complete substantially, and sulfide finally enters in mine tailing, the mine tailing higher to Containing Sulfur copper grade carries out pyrometallurgical smelting mostly at present, this method not only cost is high, and it is large to the pollution of environment.
Summary of the invention
The invention provides the degree of depth leaching method that a kind of copper-bearing alloy for cupric sulfide slag charge leaches mine tailing, it is characterized in that: the problem that the mine tailing solving the generation of normal pressure leaching copper-bearing alloy cannot process, its treatment step is as follows:
(1) normal pressure leaching: normal pressure leaching is carried out to copper-bearing alloy, the metal simple-substances such as the copper in copper-bearing alloy, cobalt, iron, nickel and oxide compound dissolve substantially, and cupric sulfide all enters in mine tailing;
(2) high pressure leaches: joined by mine tailing in closed reactor, then pure oxygen is added to build the hyperbaric environment of reaction, use acid as liquid before leaching, under the environment of High Temperature High Pressure, make cupric sulfide and sulfuric acid, oxygen generation Leaching reaction, mine tailing is leached to copper-bearing alloy and carries out degree of depth leaching, sulfide is wherein dissolved completely, obtains comparatively pure copper-bath;
(3) Filter Press: by pressure filter, solid-liquid separation is carried out to the ore pulp after high pressure Leaching reaction, solid-state is leached mud, and liquid state is cupric leach liquor;
(4) electrodeposition: directly mixed with electric rich solution by the leach liquor of cupric, enters copper electrodeposition system and carries out electrodeposition operation, output electro deposited copper.
The solution obtained after carrying out solid-liquid separation to the ore pulp after mine tailing carries out degree of depth leaching is comparatively pure, substantially not containing other metallic impurity, can not pass through extraction process, directly be mixed into electric rich solution and carry out electrodeposition operation, output cathode copper.
Beneficial effect of the present invention: the present invention innovates in the process to copper-bearing alloy normal pressure leaching mine tailing, by carrying out high-pressure deep leaching to mine tailing, cupric sulfide in mine tailing and sulfuric acid, oxygen are reacted, obtain comparatively pure copper-bath, then by electrodeposition operation output cathode copper, not only processing method is simple, technical qualification easily control, after leaching, remaining mine tailing is few, and the copper reclaimed in copper-bearing alloy routine leaching mine tailing of high degree, decreases the pollution of mine tailing to environment; And due to other metals content impurity in normal pressure leaching mine tailing very low, make the solution leaching gained through the degree of depth comparatively pure, do not need to pass through extraction process after solid-liquid separation, directly be mixed into electric rich solution and carry out electrodeposition operation, just can output cathode copper, save organic consumption during copper extraction.
Accompanying drawing explanation
Fig. 1 is schema of the present invention.
Embodiment
According to Fig. 1, the present invention is further described:
Embodiment 1
Treatment step of the present invention is as follows:
(1) normal pressure leaching: normal pressure leaching is carried out to copper-bearing alloy, the metal simple-substances such as the copper in copper-bearing alloy, cobalt, iron, nickel and oxide compound dissolve substantially, and cupric sulfide all enters in mine tailing;
(2) high pressure leaches: joined by mine tailing in closed reactor, then pure oxygen is added to build the hyperbaric environment of reaction, use acid as liquid before leaching, under the environment of High Temperature High Pressure, make cupric sulfide and sulfuric acid, oxygen generation Leaching reaction, mine tailing is leached to copper-bearing alloy and carries out degree of depth leaching, sulfide is wherein dissolved completely, obtains comparatively pure copper-bath;
(3) Filter Press: by pressure filter, solid-liquid separation is carried out to the ore pulp after high pressure Leaching reaction, solid-state is leached mud, and liquid state is cupric leach liquor;
(4) electrodeposition: directly mixed with electric rich solution by the leach liquor of cupric, enters copper electrodeposition system and carries out electrodeposition operation, output electro deposited copper.
Embodiment 2
After normal pressure leaching is carried out to copper-bearing alloy, by acid (sulfur acid 180g/L, copper 35g/L) and copper-bearing alloy normal pressure leaching mine tailing (cupric 65%, other metals content impurity≤1%) under high oxygen pressure environment, carry out degree of depth Leaching reaction, ore pulp after completion of the reaction carries out solid-liquid separation by pressure filter, filtrate enters copper electrodeposition system produce cathode copper after being mixed into electric rich solution, the acid simultaneously formed recycles, and in mine tailing, copper leaching rate is about 90%.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvement, and these improvement also should be considered as protection scope of the present invention.
Claims (2)
1. copper-bearing alloy leaches a degree of depth leaching method for mine tailing, it is characterized in that: the problem that the mine tailing solving the generation of normal pressure leaching copper-bearing alloy cannot process, and its treatment step is as follows:
(1) normal pressure leaching: normal pressure leaching is carried out to copper-bearing alloy, the metal simple-substances such as the copper in copper-bearing alloy, cobalt, iron, nickel and oxide compound dissolve substantially, and cupric sulfide all enters in mine tailing;
(2) high pressure leaches: joined by mine tailing in closed reactor, then pure oxygen is added to build the hyperbaric environment of reaction, use acid as liquid before leaching, under the environment of High Temperature High Pressure, make cupric sulfide and sulfuric acid, oxygen generation Leaching reaction, mine tailing is leached to copper-bearing alloy and carries out degree of depth leaching, sulfide is wherein dissolved completely, obtains comparatively pure copper-bath;
(3) Filter Press: by pressure filter, solid-liquid separation is carried out to the ore pulp after high pressure Leaching reaction, solid-state is leached mud, and liquid state is cupric leach liquor;
(4) electrodeposition: directly mixed with electric rich solution by the leach liquor of cupric, enters copper electrodeposition system and carries out electrodeposition operation, output electro deposited copper.
2. the degree of depth leaching method of mine tailing is leached according to a kind of copper-bearing alloy according to claim 1, it is characterized in that: the solution obtained after carrying out solid-liquid separation to the ore pulp after mine tailing carries out degree of depth leaching is comparatively pure, substantially not containing other metallic impurity, extraction process can not be passed through, directly be mixed into electric rich solution and carry out electrodeposition operation, output cathode copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410254313.XA CN105177283A (en) | 2014-06-10 | 2014-06-10 | Deep leaching method of copper-containing alloy leaching tailings |
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| CN201410254313.XA CN105177283A (en) | 2014-06-10 | 2014-06-10 | Deep leaching method of copper-containing alloy leaching tailings |
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| CN105177283A true CN105177283A (en) | 2015-12-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521553A (en) * | 2016-11-04 | 2017-03-22 | 金少平 | Process for extracting elemental copper by utilizing waste copper slag |
| CN111065752A (en) * | 2017-10-23 | 2020-04-24 | 住友金属矿山株式会社 | Method for separating copper from nickel and cobalt |
| CN111183236A (en) * | 2017-09-29 | 2020-05-19 | 住友金属矿山株式会社 | Method for separating copper from nickel and cobalt |
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| CN1548563A (en) * | 2003-05-23 | 2004-11-24 | 浙江大学 | Wet separation process of waste ZnCuNi alloy |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521553A (en) * | 2016-11-04 | 2017-03-22 | 金少平 | Process for extracting elemental copper by utilizing waste copper slag |
| CN111183236A (en) * | 2017-09-29 | 2020-05-19 | 住友金属矿山株式会社 | Method for separating copper from nickel and cobalt |
| CN111065752A (en) * | 2017-10-23 | 2020-04-24 | 住友金属矿山株式会社 | Method for separating copper from nickel and cobalt |
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