A kind of beneficiation method of copper-nickel sulfide ore

A copper-nickel sulfide ore and ore dressing method technology, which is applied to chemical instruments and methods, flotation, wet separation, etc., can solve problems such as low metal recovery rate and poor concentrate quality, and achieve improved metal recovery rate and improved recovery rate. rate effect

Active Publication Date: 2022-03-15
JINCHUAN GROUP LIMITED
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AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of poor concentrate quality and low metal recovery rate caused by the lack of existing mineral processing technology, the present invention creatively proposes a magnetic separation of tailings, re-grinding and magnetic separation to reduce magnesium and re-enrichment, and strong capture of magnetic concentrate. The process of improving metal recovery rate can significantly increase the recovery rate of nickel and copper under the premise of ensuring the quality of low-grade concentrate

Method used

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  • A kind of beneficiation method of copper-nickel sulfide ore
  • A kind of beneficiation method of copper-nickel sulfide ore
  • A kind of beneficiation method of copper-nickel sulfide ore

Examples

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Embodiment 1

[0023] Example 1: The ore sample is a slurry sample of Jinchuan Copper-Nickel Sulfide Mine. The raw ore contains 1.01% nickel and 0.5% copper, and the main gangues are olivine and serpentine.

[0024] Copper-nickel sulfide ore according to figure 1 As shown in the process, the first stage of grinding fineness -200 mesh product content is 65%, the first stage of flotation roughing is added according to 300g ammonium sulfate, 200g ethyl xanthate, and 40g butylammonium black medicine per ton of raw ore, and no medicine is added for selection. The first-stage roughing tailings and the first-stage concentrated ore enter the second-stage separation, the second-stage concentrated ore returns to the upper level, and the product of the first-stage secondary selection is high-grade concentrate. The second-stage grinding fineness is -200 mesh and the product content is 85%. In the second-stage flotation, 100g of dixanthate and 20g of butylammonium black drug are added per ton of raw ore ...

Embodiment 2

[0031] Example 2: The ore sample is a slurry sample of Jinchuan Copper-Nickel Sulfide Mine. The raw ore contains 1.15% nickel and 0.55% copper, and the main gangues are olivine and serpentine.

[0032] Copper-nickel sulfide ore according to figure 1 As shown in the process, the first stage of grinding fineness -200 mesh product content is 65%, the first stage of flotation roughing is added according to 300g ammonium sulfate, 200g ethyl xanthate, and 40g butylammonium black medicine per ton of raw ore, and no medicine is added for selection. The first-stage roughing tailings and the first-stage concentrated ore enter the second-stage separation, the second-stage concentrated ore returns to the upper level, and the product of the first-stage secondary selection is high-grade concentrate. The second-stage grinding fineness is -200 mesh and the product content is 85%. In the second-stage flotation, 100g of dixanthate and 20g of butylammonium black medicine are added per ton of raw...

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Abstract

The invention relates to a beneficiation method of copper-nickel sulfide ore. In the present invention, raw ores are sorted through two-stage grinding and flotation operations to obtain high-grade concentrates and two-stage copper-nickel mixed concentrates, the flotation tailings are subjected to magnetic separation and tailings, and the magnetic separation concentrates are re-selected. After grinding, the secondary magnetic separation is carried out to reduce magnesium and then enrich, and the secondary magnetic separation concentrate is subjected to strong collection flotation, and the obtained concentrate and the second-stage copper-nickel mixed concentrate are combined into a low-grade concentrate. The present invention creatively proposes a process of first-time magnetic separation of tailings, re-grinding and magnetic separation to reduce magnesium and re-enrichment, and strong collection of magnetic concentrate to improve metal recovery. Under the premise of ensuring the quality of low-grade concentrate, the process can be significantly improved. Improve nickel and copper recovery.

Description

technical field [0001] The invention relates to a beneficiation method of copper-nickel sulfide ore, which can significantly improve the recovery rate of nickel and copper without affecting low-grade concentrate magnesium oxide. Background technique [0002] Copper sulfide ore is an important mineral resource. With the continuous development and utilization of copper-nickel sulfide ore, the properties of copper-nickel sulfide ore have undergone the following two changes: ① The composition and properties of the raw ore have changed. The metal recovery rate is low; ②The metal grade of the raw ore decreases and the magnesium oxide content increases, resulting in the magnesium oxide concentrate exceeding the standard, especially the low-grade concentrate after the second-stage grinding and flotation, because of its high fineness, the magnesium oxide is more likely to exceed the standard. The flash furnace of the smelter requires the magnesium oxide content of the concentrate to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00B03B9/00B03D1/018B03C1/30C22B1/00C22B15/00C22B23/00B03D101/02B03D101/04B03D101/06B03D103/02
CPCB03B7/00B03B9/00B03D1/018B03C1/30C22B1/00C22B15/0004C22B23/005B03D2201/02B03D2201/04B03D2201/06B03D2203/02
Inventor 代宗李金智赵凯
Owner JINCHUAN GROUP LIMITED
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