Sorting method of skarn type low-grade copper zinc ore

A low-grade, skarn technology, used in chemical instruments and methods, solid separation, wet separation, etc., can solve the problem of unsuitable use of chemicals, equipment or mineral processing technology, affecting the recovery rate of target minerals, and increasing slurry viscosity and other problems, to achieve the effect of improving the comprehensive utilization rate, improving the comprehensive recovery rate of minerals, and reducing the dosage of chemicals

Active Publication Date: 2019-10-15
青海省地质矿产测试应用中心
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the non-metallic minerals (pyroxene, serpentine, pyrophyllite, chlorite) and other silicate minerals of calcium, magnesium, iron, and aluminum in the raw ore are easy to muddy after grinding, which increases the viscosity of the pulp , forming competitive adsorption on mineral processing agents, affecting the recovery rate of target minerals, which is v...

Method used

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  • Sorting method of skarn type low-grade copper zinc ore
  • Sorting method of skarn type low-grade copper zinc ore
  • Sorting method of skarn type low-grade copper zinc ore

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preparation example Construction

[0056] In the present invention, the preparation method of the low-temperature-resistant composite collector preferably includes the following steps: adding glycol or ether phthalate, thionitrile, and dialkylthiocarbamic acid The ester is mixed with the auxiliary agent to obtain a low temperature resistant composite collector. In the present invention, the mixing order of the phthalate, thionitrile, dialkylthiocarbamate and auxiliary agent of the glycol or ether is not particularly limited, and any mixing order can be adopted. The present invention does not specifically limit the mixing method, and it is sufficient to use a mixing method well known to those skilled in the art. In the present invention, the mixing method is preferably stirring; the mixing time is preferably 8-15 min. Through the mixing, the present invention forms a homogeneous, transparent, oily low-temperature resistant composite collector, ensuring the homogeneity and stability of the low-temperature resista...

Embodiment 1

[0076] Grind the raw ore (skarn type low-grade copper-zinc ore), control the mass concentration of the ore to 67%, add sodium carbonate (500g / t) during the grinding process, and grind to a particle size of more than 92% It is less than 0.074mm to obtain the rough flotation ore;

[0077] The rough flotation raw ore is subjected to copper-zinc-sulfur mixed flotation: 50g / t copper sulfate is added to the rough flotation raw ore and stirred for 3min, 30g / t P0553, stirred for 3min, and 6g / t MIBC (methyl isobutyl Base methanol), set the mass concentration of the coarse beneficiation slurry to 30%, perform the first roughing to obtain a copper-zinc-sulfur mixed concentrate 1, and add 7g / tP0553 to the tailings obtained from the first roughing for the second roughing, Obtain the copper-zinc-sulfur mixed concentrate 2 and the copper-zinc-sulfur mixed coarse beneficiation tailings, combine the copper-zinc-sulfur mixed concentrate 1 and the copper-zinc-sulfur mixed concentrate 2 to obtain a ...

Embodiment 2

[0084] Grind the raw ore (skarn type low-grade copper-zinc ore), control the mass concentration of the ore to 67%, add sodium carbonate (500g / t) during the grinding process, and grind to a particle size of more than 92% It is less than 0.074mm to obtain the rough flotation ore;

[0085] Perform mixed flotation of the rough flotation ore: add 50g / t copper sulfate to the rough flotation ore and stir for 3min, add 25g / t P0553, stir for 3min, add 6g / t MIBC, set the rough ore slurry The first roughing process is carried out to obtain a copper-zinc-sulfur mixed concentrate 1, and 10g / t P0553 is added to the tailings obtained from the first roughing process for the second roughing process to obtain a copper-zinc-sulfur mixed concentrate 2. And copper-zinc-sulfur mixed coarse-dressing tailings; combining the copper-zinc-sulfur mixed concentrate 1 and copper-zinc-sulfur mixed concentrate 2 to obtain a copper-zinc-sulfur mixed concentrate; adding the copper-zinc-sulfur mixed coarse-dressin...

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Abstract

The invention belongs to the technical field of mineral machining, and particularly relates to a sorting method of a skarn type low-grade copper zinc ore. The sorting method comprises the steps of carrying out first ore grinding on raw ore to obtain flotation roughing raw ore; carrying out mixed flotation on the flotation roughing raw ore to obtain copper-zinc-sulfur mixed concentrate; carrying out second ore grinding on the copper-zinc-sulfur mixed concentrate to obtain copper-zinc-sulfur mixed ore pulp; separating the copper zinc mixture and sulfur from the copper-zinc-sulfur mixed ore pulpto obtain copper-zinc mixed concentrate and sulfur crude ore; and carrying out floatation on the sulfur crude ore to obtain sulfur concentrate. According to the sorting method of the skarn type low-grade copper zinc ore, the copper grade of the obtained copper-zinc mixed concentrate is 14.88%, the copper recovery rate is 75.37%, the zinc contained is 9.96%, and the zinc recovery rate is 66.58%; the sulfur grade of the obtained sulfur concentrate is 30.56%, and the sulfur recovery rate is 31.43%; the comprehensive utilization rate of the low-grade copper-zinc ore can be effectively improved; and the use amount of reagent is remarkably reduced, and the pollution degree to the environment can be reduced.

Description

Technical field [0001] The invention relates to the technical field of mineral processing, in particular to a sorting method of skarn type low-grade copper-zinc ore. Background technique [0002] The characteristic of copper-lead-zinc ore is typical "poor and fine stray", and the beneficiation of complex copper-lead-zinc ore is the key research field of mineral processing researchers. Studies have shown that the ore properties of copper-lead-zinc ore are complex and changeable, and because the partially dissolved copper ions of secondary copper ore and copper oxide ore in the grinding and flotation process have a strong activation effect on zinc minerals, thereby increasing copper and lead The difficulty of separation, lead-zinc separation, and copper-zinc separation. At present, the traditional copper-lead-zinc beneficiation process has disadvantages such as high toxicity of chemicals and serious environmental pollution; second, low utilization rate of useful minerals, large am...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03B9/00B03B1/00
CPCB03B1/00B03B7/00B03B9/00
Inventor 孙晓华张益魁熊馨魏振宏刘氘赵玉卿应永朋董迈青谢海东
Owner 青海省地质矿产测试应用中心
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