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Method for extraction of Co and Ni with mixed leaching of Co slag and Ni-Mo ores

A technology of nickel-molybdenum ore and cobalt slag, which is applied in the field of metallurgy, can solve the problems of waste of precious tungsten resources, etc., and achieve the effects of less reagent consumption, simple treatment process, and high metal recovery rate

Active Publication Date: 2019-09-06
XIAMEN TUNGSTEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is understood that a company in the mainland discards tungsten-containing residues every year, and the amount of tungsten-folded metal reaches more than ten tons, resulting in a waste of precious tungsten resources.

Method used

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  • Method for extraction of Co and Ni with mixed leaching of Co slag and Ni-Mo ores
  • Method for extraction of Co and Ni with mixed leaching of Co slag and Ni-Mo ores
  • Method for extraction of Co and Ni with mixed leaching of Co slag and Ni-Mo ores

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Ball milling of nickel-molybdenum ore: the nickel-molybdenum ore from Zunyi, Guizhou has been ball-milled in advance, and sieved through a 200-mesh screen. Its main components are:

[0052]

[0053] (2) Nickel-molybdenum ore and cobalt slag are mixed in a mass ratio (0.3:1): the chemical composition of cobalt slag is:

[0054]

[0055] (3) Leaching reaction process: the leaching reaction temperature is controlled at 85-90°C, the remaining acid concentration is about 20-30g / l, and the leaching reaction time is controlled for 3 hours.

[0056] According to the slag weight after leaching and the cobalt and nickel contents, the cobalt leaching rate is calculated to be 98.8% by weight, and the nickel leaching rate is 90.89% by weight. The content of molybdenum in the leaching slag is 5.17% by weight. The leached cobalt and nickel solutions can be further removed and purified to produce cobalt chloride and nickel sulfate. The leached molybdenum-containing slag can...

Embodiment 2

[0058] (1) nickel-molybdenum ore ball mill: with embodiment 1;

[0059] (2) Nickel-molybdenum ore and cobalt slag are mixed according to the mass ratio (0.25:1): the chemical composition of cobalt slag is:

[0060]

[0061] (3) Leaching reaction process: the leaching reaction temperature is controlled at 85-90°C, the residual acid concentration is about 22-30g / l, and the leaching reaction time is controlled for 3 hours.

[0062] According to the slag weight after leaching and the cobalt and nickel contents, the cobalt leaching rate is calculated to be 98.1% by weight, and the nickel leaching rate is 95.6% by weight. The content of molybdenum in the leaching slag is 4.97% by weight. The leached cobalt and nickel solutions can be further removed and purified to produce cobalt chloride and nickel sulfate. The leached molybdenum-containing slag can be used as raw material for molybdenum smelting system.

Embodiment 3

[0064] (1) nickel-molybdenum ore ball mill: with embodiment 1;

[0065] (2) Nickel-molybdenum ore and cobalt slag are mixed in a mass ratio (0.2:1): the chemical composition of cobalt slag is:

[0066]

[0067] (3) Leaching reaction process: the leaching reaction temperature is controlled at 85-90°C, the remaining acid concentration is about 26-30g / l, and the leaching reaction time is controlled for 3 hours.

[0068] According to the slag weight after leaching and the cobalt and nickel contents, the cobalt leaching rate is calculated to be 96.8% by weight, and the nickel leaching rate is 94.6% by weight. The content of molybdenum in the leaching slag is 3.93% by weight. The leached cobalt and nickel solutions can be further removed and purified to produce cobalt chloride and nickel sulfate. The leached molybdenum-containing slag can be used as raw material for molybdenum smelting system.

[0069] Evaluation and analysis: Embodiment 1-3 has studied respectively the influe...

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Abstract

The invention discloses a method for extraction of Co and Ni with mixed leaching of Co slag and Ni-Mo ores. The method comprises the steps that (1) the Ni-Mo ores are grinded, so Ni-Mo ore powder is obtained; (2) the Co slag is treated with size mixing, so a Co slag sizing agent is obtained; (3) the Ni-Mo ore powder is taken as a reducing agent and mixed with the Co slag sizing agent in a certainproportion, and the mixture is treated with leaching in an acid system, so metallic oxides of Co and Ni can be leached by reduction, and an after-leaching sizing agent is obtained; (4) the after-leaching sizing agent is treated with filter pressing, so a leaching agent containing Co and Ni and leaching slag containing Mo are obtained; and (5) the leaching agent is treated with Co-Ni purification and separation, so CoO and NiSO4 are obtained. The method disclosed by the invention has the advantages such as consumption of a few of reagents, simple processing technologies and a high metal recovery rate.

Description

technical field [0001] The invention belongs to the technical field of metallurgy. Specifically, the invention relates to a method for cobalt slag and nickel-molybdenum ore mixed leaching to extract cobalt and nickel. Background technique [0002] Nickel-molybdenum ore is a kind of polymetallic complex ore resource unique to my country. It is mainly distributed in Zunyi, Guizhou, Zhangjiajie, Hunan and other places. In South China, there are sedimentary nickel-molybdenum-vanadium polymetallic deposits and major metallogenic belts of precious metal mineralization. This mineral mainly contains valuable metals Ni, Mo, etc. It is a complex polymetallic ore with important geological and economic significance. Among them, the nickel-molybdenum ore resources in Zunyi, Guizhou and northwestern Hunan are characterized by their large resource reserves, nickel-molybdenum and The high-grade characteristics of precious metals have attracted great attention. [0003] Nickel-molybdenum or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B23/00
CPCC22B7/007C22B23/043C22B23/0484Y02P10/20
Inventor 刘会明方奇刘华旭
Owner XIAMEN TUNGSTEN