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A sorting method for skarn-type low-grade copper-zinc ore

A low-grade, skarn technology, applied in the direction of chemical instruments and methods, solid separation, wet separation, etc., can solve the problem of unsuitable use of chemicals, equipment or beneficiation process, affecting the recovery rate of target minerals, and increasing the viscosity of ore slurry 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: 2021-03-02
青海省地质矿产测试应用中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • 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 very unfavorable to the mineral processing process
[0004] Due to the special geographical characteristics of the Qinghai Plateau, the mining area is above 3,000 meters above sea level, the air is thin, oxygen-deficient, and the temperature and water temperature are low. Many chemicals, equipment or mineral processing processes are not suitable for use in high-altitude areas.

Method used

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  • A sorting method for skarn-type low-grade copper-zinc ore
  • A sorting method for skarn-type low-grade copper-zinc ore
  • A sorting method for 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 comprises the following steps: phthalates, thiazonitrile esters, dialkylthiocarbamic acids of dibasic alcohols or ethers Esters and additives are mixed to obtain a low temperature resistant composite collector. In the present invention, there is no special limitation on the mixing order of the phthalates, thiazonitrile esters, dialkylthiocarbamate and auxiliary agents of the dihydric alcohols or ethers, and any mixing order can be used. In the present invention, the mixing method is not particularly limited, and a mixing method well known to those skilled in the art can be used. In the present invention, the mixing method is preferably stirring; the mixing time is preferably 8-15 minutes. The present invention forms a homogeneous, transparent, oily low-temperature resistant composite collector through the mixing, ensures the homogeneity and stability of the ...

Embodiment 1

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

[0077] Carry out mixed flotation of copper-zinc-sulfur to the raw ore of flotation rough selection: add 50g / t copper sulfate successively to the raw ore of flotation and stir for 3min, add 30g / tP0553, stir for 3min, add 6g / tMIBC (methyl isobutyl Base methanol), setting the mass concentration of the roughing pulp to be 30%, carry out the first roughing to obtain the copper-zinc-sulfur mixed concentrate 1, add 7g / tP0553 to the tailings obtained by the first roughing and carry out the second roughing, Obtain copper-zinc-sulfur mixed concentrate 2 and copper-zinc-sulfur mixed roughing tailings, combine the copper-zinc-sulfur mixed concentrate 1 and copper-zinc-sulfur mixed concent...

Embodiment 2

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

[0085] The flotation roughing ore is subjected to mixed flotation: add 50g / t copper sulfate to the flotation roughing raw ore and stir for 3min, add 25g / t P0553, stir for 3min, add 6g / t MIBC, set the roughing pulp The mass concentration is 30%, and the first roughing is carried out to obtain copper-zinc-sulfur mixed concentrate 1, and 10g / t P0553 is added to the tailings obtained from the first roughing for second roughing to obtain copper-zinc-sulfur mixed concentrate 2 and copper-zinc-sulfur mixed roughing tailings; combining the copper-zinc-sulfur mixed concentrate 1 and copper-zinc-sulfur mixed concentrate 2 to obtain copper-zinc-sulfur mixed concentrate; adding the copper...

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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 for skarn-type low-grade copper-zinc ore. Background technique [0002] Copper-lead-zinc ore is characterized by typical "poor, fine and stray", and the beneficiation of complex copper-lead-zinc ore is the key research field of beneficiation researchers. Studies have shown that the ore properties of copper-lead-zinc ore are complex and changeable, and because the copper ions dissolved in the secondary copper ore and copper oxide ore during the grinding and flotation process have a strong activation effect on zinc minerals, thereby increasing the copper-lead The difficulty of separation, lead-zinc separation and copper-zinc separation. At present, the traditional copper-lead-zinc beneficiation process has weaknesses such as high chemical toxicity and serious environmental pollution; second, there are low utilization rates of useful minerals, a large nu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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