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Method for recovering micro-nickel and cobalt from manganese ore

A manganese ore, trace technology, applied in the direction of improving process efficiency, can solve problems such as waste of resources, and achieve the effect of protecting the environment

Inactive Publication Date: 2009-04-29
广西大新桂鑫锰业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, heavy metals such as nickel and cobalt in manganese ore are discarded because they cannot be recycled, which not only causes a great waste of resources, but also becomes a hidden danger of environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Take 50 grams of sulfide slag, add 170 ml of distilled water to make a slurry with a weight concentration of 22.7%, put it into a mixer with a rotation speed of 300 rpm, stir for 1 hour at 100°C, and scrape the scum generated by manual scraping , suction filter. The filter residue was put into a laboratory muffle furnace for roasting at a roasting temperature of 800° C. and a roasting time of 1 hour. The final sampling analysis showed that the nickel content in the concentrate product was 6.79%, and the cobalt content was 5.71%. The nickel recovery rate is 30.80%, and the cobalt recovery rate is 40.25%.

Embodiment 2

[0012] Take 500 grams of sulfide slag, add 1200 ml of distilled water to make a slurry with a weight concentration of 29.4%, put it into a mixer with a rotation speed of 300 rpm, stir at 90°C for 80 minutes, and scrape the scum generated by manual scraping , suction filter. The filter residue was put into the laboratory muffle furnace for roasting, the roasting temperature was 700°C, and the roasting time was 70 minutes. The final sampling analysis shows that the nickel content in the concentrate product is 6.81%; the cobalt content is 5.75%. The nickel recovery rate is 32.97%, and the cobalt recovery rate is 40.52%.

Embodiment 3

[0014] Take 200 kg of sulfide slag, add 600 kg of tap water, make a slurry with a weight concentration of 25%, put it into a XJK-4A single-trough flotation machine to conduct a semi-industrial test at a speed of 400 rpm, and stir under normal temperature and pressure After 30 minutes, the machine will automatically scrape out the foam. The foam is dehydrated through the filter bed and air-dried naturally. The air-dried ore samples were put into the laboratory muffle furnace for roasting at a temperature of 650°C. After 80 minutes of roasting, sampling and analysis showed that the content of nickel in the sulfide slag was increased from 0.74% to 13.94% in the concentrate obtained after roasting. 18.84 times; cobalt increased from 0.38% in the sulphide slag to 10.72% in the obtained concentrate after roasting, an increase of 28.21 times. The nickel content in the flotation waste was not detected, and the cobalt content was 0.0001%. Calculated by industrial wastewater, the recov...

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PUM

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Abstract

The process of reclaiming Ni and Co from manganese ore includes the steps of: eliminating Fe and heavy metals from the sulfuric acid leached solution of manganese concentrate to obtain sulfide dreg, adding water to the sulfide dreg to compound 20-30 wt% concentration ore slurry, heating and stirring for 20-80 min and collecting the scruff, sucking filtering, and roasting filter slag at 600-800 deg.c for 40-80 to obtain Ni and Co concentrate with Co content up to 10.72 % and Ni content up to 13.94 % in the Ni and Co reclaiming rate near to 100 %. The present invention has best utilization of resource and environment friendship.

Description

technical field [0001] The invention belongs to a method for recovering trace amounts of nickel and cobalt from manganese ore. Background technique [0002] my country's Guangxi Zhuang Autonomous Region is rich in manganese ore resources, and manganese ore contains ultra-trace amounts of nickel and cobalt. CITIC Dameng Mining Co., Ltd., one of the main production units of manganese ore in Guangxi, is constantly improving its mining, dressing, and smelting technologies, as well as its technical indicators and economic benefits; the company's manganese ore is first crushed, Gravity separation and magnetic separation produce manganese concentrate. The manganese content in manganese concentrate is 21.00%; the nickel content is 0.08%; the cobalt content is 0.03%. Manganese concentrate is leached by sulfuric acid to generate sulfates of various metals. Add oxidant (or blow air) to the leaching solution to oxidize ferrous iron to trivalent, then add ammonium hydroxide to adjust ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B23/00C22B3/08C22B3/22C22B1/02
CPCY02P10/20
Inventor 唐世杰覃雄黄卫明
Owner 广西大新桂鑫锰业有限公司