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Method of bulk infusion extracting nickel cobalt from low grade red soil nickel ore

A low-grade lateritic nickel ore technology, which is applied in the field of heap leaching to extract nickel, can solve the problems of unsuitable treatment of low-grade lateritic nickel ore, small scope of adaptable resources, and high production cost, and achieve a wide range of mineral resource utilization, small investment, and The effect of low production cost

Inactive Publication Date: 2007-04-18
广西赛可昱新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned process methods all have the disadvantages of large investment, high energy consumption, high operating cost, small scope of adaptability to resources, and high production cost, and are especially not suitable for processing low-grade lateritic nickel ore.
The proven nickel-cobalt mineral resources in our province are all laterite nickel ore. Since the grade of laterite nickel ore is only 0.5-1.1%, it is impossible to process it with the existing technology

Method used

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  • Method of bulk infusion extracting nickel cobalt from low grade red soil nickel ore
  • Method of bulk infusion extracting nickel cobalt from low grade red soil nickel ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A. After the ore is mined, crush the ore with a particle size greater than 2cm, and control the average particle size below 2cm;

[0026] B. Put the ore with a particle size above 100 mesh to 1.5cm directly into the pile, and at the same time mix the ore with a particle size of less than 100 mesh and a particle size larger than 1.5cm according to a mass ratio of 0.5:1 and put it into the pile. Loose piles of ore heaps to improve the permeability of ore heaps;

[0027] C. Prepare sulfuric acid aqueous solution according to the requirements of spray concentration of 5%, and spray intensity of 15L / m 2 The amount of .h, the sulfuric acid aqueous solution is sent to each sprinkler installed on the top of the ore heap and each drip irrigation pipe to realize the spraying and dripping leaching of the ore heap, and a sprinkler is set every 2-3 square meters on the top of the ore heap. Set a drip irrigation pipe every 30-40cm on the top and side of the ore pile;

[0028] D. Co...

Embodiment 2

[0031] A. After the ore is mined, crush the ore with a particle size greater than 2cm, and control the average particle size below 2cm;

[0032] B. Put the ore above 100 mesh to 1.5cm into the pile directly, and at the same time, mix the ore with a particle size of less than 100 mesh and a particle size larger than 1.5cm according to the mass ratio of 0.8:1 and put it into the pile. Loose piles of ore heaps to improve the permeability of ore heaps;

[0033] C. Prepare hydrochloric acid aqueous solution according to the requirement that the spray concentration is 18%, and the spray intensity is 30L / m 2 The amount of .h, the hydrochloric acid aqueous solution is sent into the nozzles and drip irrigation pipes arranged on the top of the ore heap to realize the spraying and dripping of the ore heap. A nozzle is set every 2-3 square meters on the top of the ore heap. Set a drip irrigation pipe every 30-40cm on the top and side of the ore pile;

[0034] D. Collect the leachate aft...

Embodiment 3

[0037] A. After the ore is mined, crush the ore with a particle size greater than 2cm, and control the average particle size below 2cm;

[0038] B. Put the ore above 100 mesh to 1.5cm into the pile directly, and at the same time, mix the ore with a particle size of less than 100 mesh and a particle size larger than 1.5cm according to the mass ratio of 0.7:1 and put it into the pile. Loose piles of ore heaps to improve the permeability of ore heaps;

[0039] C. Prepare a mixed aqueous solution of sulfuric acid and hydrochloric acid according to the requirement that the spray concentration is 10%. The ratio of sulfuric acid and hydrochloric acid is 1:2, and the spray intensity is 22L / m 2 .h, the mixed aqueous solution is sent into each nozzle and each drip irrigation pipe arranged on the top of the ore heap to realize the spraying and dripping and leaching of the ore heap. Set a drip irrigation pipe every 30-40cm on the top and side of the pile;

[0040] D. Collect the leachat...

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Abstract

A process for extracting Ni and Co from the low-grade Ni-contained laterite ore includes such steps as crushing to make its average granularity less than 2 cm, stacking the ore particles with granularity of 100 mesh-1.5 cm, proportionally mixing others, adding them to the stack, shrinkling acidic extracting liquid, collecting the extracting liquid, and concentrating until the concentration of Ni ions is 2-4g / L.

Description

technical field [0001] The invention relates to a method for extracting nickel by heap leaching from nickel ore, in particular to a method for extracting nickel and cobalt by acid leaching from low-grade laterite nickel ore. Background technique [0002] At present, the treatment processes for lateritic nickel ore mainly include: ① PAL process (autoclaved acid leaching), which is suitable for the treatment of ferrous nickel ore, with nickel ≥ 1.5% and Mg ≤ 3.0%, which can reduce acid consumption and have a high nickel recovery rate. ② Reduction roasting and ammonia leaching are suitable for the treatment of ferrous nickel ore, the nickel content is ≥ 1.5%, and the nickel recovery rate is high. ③ Nickel-iron method, suitable for processing magnesia ore, containing nickel ≥ 1.5%, can comprehensively recover iron. ④ Matte-making smelting method is suitable for processing magnesia ore, containing nickel ≥ 2.0%, and the recovery rate of nickel is high. However, the above-mentio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B23/00C22B3/06
CPCY02P10/20
Inventor 曹国华
Owner 广西赛可昱新材料科技有限公司
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