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Mechanical activating and strengthening cobalt white alloy cobalt leaching technology

A technology of mechanical activation and cobalt white alloy, which is applied in the field of metal smelting to achieve the effect of low cost and high leaching rate

Inactive Publication Date: 2015-05-06
赣州逸豪优美科实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the method of leaching cobalt by mechanical activation method in China.

Method used

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  • Mechanical activating and strengthening cobalt white alloy cobalt leaching technology
  • Mechanical activating and strengthening cobalt white alloy cobalt leaching technology
  • Mechanical activating and strengthening cobalt white alloy cobalt leaching technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042]Experimental fixed conditions: leaching agent sulfuric acid concentration 3.0mol / L, liquid-solid ratio 8:1, stirring speed 150r / min, reaction temperature 80°C, air volume 4L / min, investigate the change trend of activation time and reaction time on cobalt leaching rate , the result is as figure 1 shown.

[0043] Depend on figure 1 It can be seen that the effect of activation time on the leaching rate of cobalt is very obvious. Compared with unactivated white metal, the leaching rate of cobalt and the final leaching rate of white metal are significantly improved after activation. And with the prolongation of the activation time, the leaching rate of cobalt increases correspondingly, but after the activation time exceeds 60min, the improvement of the final leaching rate of cobalt by prolonging the activation time is very limited. The cobalt leaching rate of the unactivated white alloy starts to increase slowly, and the final leaching rate is only 63.2%. At 40min, 60mi...

Embodiment 2

[0045] Experimental fixed conditions: Take two white metal ore samples, unactivated and activated for 60 minutes, the sulfuric acid concentration of the leaching agent is 3.0mol / L, the liquid-solid ratio is 8:1, the stirring speed is 150r / min, the air volume is 4L / min, and the leaching temperature and time are investigated. The change trend of cobalt leaching rate, the results are as follows figure 2 shown.

[0046] Depend on figure 2 It can be seen that the reaction temperature has a significant impact on the leaching rate of cobalt whether the white metal is activated or not. When the reaction temperature is 40°C, no matter whether it is activated or not, the cobalt leaching rate is very low after 12 h of reaction, and the cobalt leaching rate increases slightly after activation; when the reaction temperature is 60°C, the cobalt leaching rate of unactivated ore It was 45.3%, and it was 60.5% after activation for 60 minutes, an increase of 15.2%. When the reaction temper...

Embodiment 3

[0048] Experimental fixed conditions: two white metal ore samples, unactivated and activated for 60 minutes, were taken, the liquid-solid ratio was 8:1, the stirring speed was 150r / min, the reaction temperature was 80°C, and the air volume was 4L / min. rate change trend, the results are as follows image 3 shown.

[0049] It can be seen from the figure that with the increase of the sulfuric acid concentration of the leaching agent, the cobalt leaching rate of the activated and unactivated white alloy ore increases with the increase of the sulfuric acid concentration. For unactivated white alloy ore, when the concentration of the leaching agent is 1mol / L, the cobalt leaching rate increases continuously with the prolongation of the leaching time, and tends to be flat after 6 hours, because the concentration of sulfuric acid decreases at this time, and the reaction speed is very small. As the process progresses, the thickness of the product layer gradually increases, and the diff...

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Abstract

The invention discloses a mechanical activating and strengthening cobalt white alloy cobalt leaching technology. In the technology, a fluidized-bed jet mill is used for preparing activated white alloy material, and the fluidized-bed jet mill is a device for crushing the white alloy by means of high-speed jet. A planetary ball milling process is replaced by the method, and the fluidized-bed jet mill is a continuous feeding and discharging device. During the crushing process, nature-based white alloy is used, and no water is needed. The mechanically activated mineral aggregate is placed in a reactive tank, and a leaching agent, namely sulfuric acid, is added for leaching, wherein concentration is 1.0-4.0mol / L, the weight ratio of liquid phase to solid phase is 8:1, the stirring speed is 150r / min, blast capacity is 40L / min for 1kg of mineral aggregate, temperature is 40-100 degrees centigrade, and leaching time is 2-12; and finally, the cobalt-containing lixivium is obtained. By mechanical activating, scale production of cobalt white alloy in industry is implemented, in a single sulfuric acid system, production effects of low cost and high leaching rate are reached, and the leaching rate of cobalt is up to 96.1%. However, the non-activated cobalt white alloy in the single sulfuric acid system cannot be produced industrially, and the cobalt leaching rate is only 63.2%.

Description

Technical field [0001] The present invention is a metal smelting technology field, which is specific to a mechanical activation and reinforcement and strengthening cobalt white alloy soaking technology. Background technique [0002] Cobalt white alloy is a kind of intermediate product in the smelting process. It mainly contains a diversified alloy of cobalt, copper, and iron. Among them, the iron content is high, and it contains a small amount of lead, zinc, calcium, magnesium and other elements.Generally, white alloy can be divided into two types: one is a copper -rich product that melted cobalt concentrates and cobalt oxide ore, which is mainly obtained by restoring the oxide ore in the electric furnace with coke;The turntable residue obtained during blowing, then alloy residue of copper, cobalt, iron and other elements that are enriched by electric furnaces and reducing melting.Because the cobalt -white alloy is the product of water quenching after being released, the mutual t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/00C22B3/08C22B23/00
CPCY02P10/20
Inventor 熊以俊胡昌黄仁如薛国元刘东辉
Owner 赣州逸豪优美科实业有限公司
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