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A method for directly producing electrolytic nickel with copper-nickel renewable resources

A technology for regenerating resources and electrolytic nickel, applied in the field of mineral smelting technology, can solve the problems of high cost, low comprehensive recovery rate of metals, difficult extraction of valuable metals, etc., and achieve the effects of low production cost and good economic benefits.

Inactive Publication Date: 2011-11-30
四川省尼科国润新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the smelting process of the traditional method, there are also problems such as low comprehensive metal recovery rate, high cost, difficult extraction of other valuable metals, and difficulty in flue gas treatment.

Method used

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  • A method for directly producing electrolytic nickel with copper-nickel renewable resources
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  • A method for directly producing electrolytic nickel with copper-nickel renewable resources

Examples

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Effect test

Embodiment 1

[0033] A method for directly producing electrolytic nickel with copper-nickel renewable resources, first copper-nickel renewable resources containing Ni: 3.23% by mass, Cu: 1.47% Fe: 5.42%, Cr: 3.12%, Zn: 1.42%, impurities The mass percentage is 85.34%. It is pulped by ball milling, and its specific gravity is 1.3. It is pumped into a closed leaching tank, and the acidity of the pulp is adjusted with sulfuric acid to make it reach a pH of 1. It is leached under normal pressure to obtain NiSO-containing 4 、CuSO 4 The leaching slag is countercurrent washed until the pH value of the slurry is 7, and the washing slag is sold to the brick factory to make bricks. The leaching rate of Ni in the raw ore can reach 99%, and the leaching rate of Co, Zn, Cu, and Mn is >96%. The pH of the leachate is adjusted to 2.0 with alkali, and the adjusted liquid is passed through M5640 to remove Cu; The solution is back-extracted to obtain pure copper liquid, and copper plates are produced by elect...

Embodiment 2

[0071] A method of directly producing electrolytic nickel with copper-nickel renewable resources. Firstly, the copper-nickel renewable resources are ball-milled to make a slurry with a specific gravity of 1.3, pumped into a closed leaching tank, and the acidity of the pulp is adjusted with sulfuric acid to make it reach a pH of 0.5-1.0, 60-70°C, react for 30 minutes, the leaching rate of nickel is more than 99%, the leaching rate of copper is 96%-98%, and the leaching rate of zinc is 96%-97%. NiSO 4 、CuSO 4 The leached slag is countercurrent washed until the pH value of the slurry is 7, and the washed slag is sold to the brick factory to make bricks.

Embodiment 3

[0073] A method of directly producing electrolytic nickel with copper-nickel renewable resources. Firstly, the copper-nickel renewable resources are ball-milled to make a slurry with a specific gravity of 1.3, pumped into a closed leaching tank, and the acidity of the pulp is adjusted with sulfuric acid to make it reach a pH of 1.0-2.0, 60-70°C, react for 30 minutes, the leaching rate of nickel is 90%-95%, the leaching rate of copper is 85%-92%, the leaching rate of zinc is 80%-90%, and the leaching is carried out under normal pressure. NiSO 4 、CuSO 4 The leached slag is countercurrent washed until the pH value of the slurry is 7, and the washed slag is sold to the brick factory to make bricks.

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Abstract

The invention relates to a method for directly producing electrolytic nickel with copper-nickel renewable resources, which includes the following steps: (1) pulping the copper-nickel renewable resources through ball milling, pumping them into a closed leaching tank, and adjusting the acidity of the pulp with sulfuric acid to make The pH reaches 0.5-3.5, and react at normal pressure and temperature at 60-70°C for 30 minutes to obtain a liquid containing NiSO4 and CuSO4; (2) obtain a liquid containing NiSO4 and CuSO4 from the slurry discharged from the leaching tank, Adjust the PH value to 2.0 with alkali in the atmospheric kettle and filter it with a plate and frame filter press; (3) Purify and remove impurities from the liquid after extracting copper; (4) After the reaction in the third step is completed, the Slag liquid separation by filter press filtration; (5) electrolytic copper; (6) electrolytic nickel. By adopting the invention, the comprehensive recovery rate is high; the treatment process does not pollute the environment, and the waste residue can be directly used for making bricks; the waste water can be recycled; the production cost is low and the economic benefit is good.

Description

technical field [0001] The invention relates to the technical field of mineral smelting technology, in particular to a method for directly producing electrolytic nickel with copper and nickel renewable resources. Background technique [0002] my country is a country short of copper and nickel. It needs 5.5 million tons of copper and 450,000 tons of nickel every year. 25% of the copper gap and 35-40% of the nickel gap still need to be imported. Although there are a lot of copper and nickel reserves in my country, there are fewer and fewer copper and nickel ores that can be economically processed by traditional dressing and smelting processes, and relatively copper and nickel resources are becoming more and more scarce; on the other hand, due to the constraints of traditional dressing and smelting technology The existence of a large amount of nickel-copper-zinc waste has not only caused the waste of copper and nickel resources, but also affected the environment. [0003] There...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B3/08C22B3/26C25C1/08C25C1/12C22B15/00C22B23/00
CPCY02P10/20
Inventor 邓智林杨思增杨培干勇
Owner 四川省尼科国润新材料有限公司
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