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Method for extracting cobalt in copper cobalt sulfide ore

A technology of sulfur-copper-cobalt ore and copper sulfide, which is applied to the improvement of process efficiency, photography technology, instruments, etc., can solve the problems of difficult control of roasting temperature and high local temperature, and achieve comprehensive recycling, less corrosion of equipment, and smooth process simple effect

Active Publication Date: 2010-05-12
BEIJING GENERAL RES INST OF MINING & METALLURGY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] If sulfur is added, the requirements for the uniform mixing of concentrate and sulfur are high, because the specific gravity of sulfur and concentrate is quite different, and it is easy to stratify in the fluidized furnace, resulting in excessive local temperature and difficult to control the roasting temperature.

Method used

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  • Method for extracting cobalt in copper cobalt sulfide ore
  • Method for extracting cobalt in copper cobalt sulfide ore

Examples

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Comparison scheme
Effect test

Embodiment 1

[0040] Ball mill the concentrate containing 1.15% cobalt, 0.44% nickel, 3.16% copper, 14.59% iron, and 10.18% sulfur to less than 0.047mm and account for 95%. Reaction in the autoclave at 190°C for 3 hours, oxygen partial pressure 0.4MPa, the leaching rate of cobalt can reach 99.2%, the leaching rate of nickel can reach 98.7%, and the leaching rate of copper can reach 98.9%. The leached pulp is neutralized with limestone and then filtered, the filter residue is sent to the tailings, and the filtrate enters the copper extraction process. The filtrate adopts existing technology to carry out copper extraction and electrodeposition to obtain cathode copper. The remaining liquid after copper extraction is neutralized to remove iron and aluminum, and nickel and cobalt are precipitated with sodium hydroxide by using the existing technology, and nickel hydroxide and cobalt enrichment can be obtained. The enriched product adopts the existing production process to obtain products such ...

Embodiment 2

[0042] Ball mill the concentrate containing 1.15% cobalt, 0.44% nickel, 3.16% copper, 14.59% iron, and 10.18% sulfur to less than 0.047mm and account for 95%. Reaction in an autoclave at 180°C for 3 hours, oxygen partial pressure 0.4MPa, cobalt leaching rate reaches 98.7%, nickel leaching rate reaches 98.1%, and copper leaching rate reaches 97.0%. The leached pulp is neutralized with limestone and then filtered, the filter residue is sent to the tailings, and the filtrate enters the copper extraction process. The filtrate adopts existing technology to carry out copper extraction and electrodeposition to obtain cathode copper. The remaining liquid after copper extraction is neutralized to remove iron and aluminum, and nickel and cobalt are precipitated with sodium hydroxide by using the existing technology, and nickel hydroxide and cobalt enrichment can be obtained. The enriched product adopts the existing production process to obtain products such as electric cobalt and elect...

Embodiment 3

[0044] Ball mill the concentrate containing 1.15% cobalt, 0.44% nickel, 3.16% copper, 14.59% iron, and 10.18% sulfur to less than 0.047mm and account for 95%. React in an autoclave at 160°C for 3 hours, oxygen partial pressure 0.4MPa, add 2.7% CaO (calculated as concentrate), the leaching rate of cobalt is 91.3%, the leaching rate of nickel is 88.7%, and the leaching rate of copper is 91.1%. . The leached pulp is neutralized with limestone and then filtered, the filter residue is sent to the tailings, and the filtrate enters the copper extraction process. The filtrate adopts existing technology to carry out copper extraction and electrodeposition to obtain cathode copper. The remaining liquid after copper extraction is neutralized to remove iron and aluminum, and nickel and cobalt are precipitated with sodium hydroxide by using the existing technology, and nickel hydroxide and cobalt enrichment can be obtained. The enriched product adopts the existing production process to o...

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Abstract

The invention provides a method for extracting cobalt in a copper cobalt sulfide ore, and relates to a method for extracting the cobalt in a copper cobalt ore which is in low grade and hard to treat and contains cobalt mineral raw materials. The method is characterized by comprising the following steps: (1) crushing and grinding low sulfur containing copper cobalt ore; (2) adding water into the grinded ore material for autoclave leaching; (3) neutralizing and filtering the leached ore pulp, and sending leaching residue into tailing; (4) carrying out copper extraction, extract stripping and strip liquor electrodeposition on the filtered solution to prepare cathode copper; (5) neutralizing copper extracting raffinate to remove iron and aluminum, filter-pressing and separating the neutralized ore pulp, and performing the neutralizing step after the filter-pressed and separated residue is returned to the step (3) for leaching; (6) precipitating cobalt and nickel in filter-pressed and separated solution by adopting sodium hydroxide, wherein the separated precipitate is cobalt nickel hydroxide concentrate; and (7) returning separated after-precipitating solution to the step (2) for the leaching process. The method has simple technical process and less equipment corrosion, and realizes comprehensive reclamation and utilization of valuable metals in the low sulfur containing copper cobalt concentrate.

Description

technical field [0001] A method for extracting cobalt from copper-cobalt sulfide ore relates to a method for extracting cobalt from copper-cobalt ore, a low-grade, refractory cobalt-containing mineral raw material. Background technique [0002] my country is a country that lacks cobalt resources, and there are almost no original rich cobalt deposits. At present, the large-scale production is mainly extracted from copper-nickel ore and cobalt-sulfur concentrate. [0003] At present, the methods for extracting cobalt from cobalt-sulfur concentrate include sulfuration roasting, oxidation roasting-slag chlorination roasting, bacterial oxidation leaching and other methods. [0004] (1) The direct sulfate roasting method is to sulfurate and roast the cobalt-sulfur concentrate containing about 0.3% cobalt and 26-35% sulfur at a temperature of 580-600°C, and the leaching rate of cobalt can reach about 75%. Acidification roasting flue gas is mixed with zinc smelting flue gas to pro...

Claims

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Application Information

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IPC IPC(8): C22B23/00C22B3/04C25C1/12
CPCY02P10/20
Inventor 蒋开喜刘铁军王海北姜军张磊夏阳蒋训雄郭文秀黄胜赵志张邦胜王玉芳赵磊刘三平蒋应平汪胜东林江顺
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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