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Beneficiation method for complex sulfide ore containing marmatite

A sphalerite and ore dressing method technology, which is applied to chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of unfavorable environmental protection, increased dosage of chemicals, and high zinc content, so as to reduce environmental pollution and improve Zinc recovery rate, effect of reducing zinc content

Inactive Publication Date: 2019-08-30
BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The composition of polymetallic sulfide ores is complex, and more heavy metal ions will be produced during the grinding process, especially when they contain secondary copper sulfide minerals and lead oxide minerals, more copper ions and lead ions will be produced, these The ions will activate the sphalerite during the grinding process, and the activated sphalerite will float together with the copper-lead minerals, resulting in a higher zinc content in the copper (lead) concentrate, which will affect the copper (lead) concentrate The quality of zinc minerals will cause the loss of
[0005] (2) This method needs to add a large amount of inhibitors in the stage of flotation of copper (lead) minerals to prevent the activated sphalerite in the grinding stage; the follow-up zinc selection operation needs to increase the amount of reagents, which has been used for flotation Inhibited sphalerite, the cost of the agent is high, the environmental pollution is relatively large, and it is not conducive to environmental protection
[0006] (3) Although a large number of inhibitors are added in this method to reduce the zinc content in the copper (lead) concentrate, the fully activated sphalerite is difficult to be suppressed, resulting in the copper (lead) concentrate containing Higher zinc, on the one hand reduces the quality of copper (lead) concentrate, on the other hand causes zinc loss

Method used

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  • Beneficiation method for complex sulfide ore containing marmatite
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  • Beneficiation method for complex sulfide ore containing marmatite

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Embodiment approach

[0023] (1) The described sequence priority flotation of the magnetic separation tailings includes: performing copper flotation and / or lead flotation on the magnetic separation tailings, thereby obtaining copper concentrate and / or lead concentrate; Zinc beneficiation of copper flotation tailings and / or lead flotation tailings to yield low-iron or iron-free sphalerite.

[0024] (2) The magnetic field strength of the magnetic separation is 0.1-2T.

[0025] (3) combining the sphalerite with the low-iron or non-iron sphalerite for zinc flotation comprises: combining the sphalerite with the low-iron or non-iron sphalerite in Carry out zinc roughing together to obtain zinc roughing concentrate and zinc roughing tailings. Carry out zinc sweeping for zinc roughing tailings twice to obtain zinc sweeping ore and tailings; zinc sweeping ore selection returns to the previous operation in sequence. Carry out three times of zinc concentration on the zinc roughing concentrate to obtain the ...

Embodiment 1

[0034] Taking lead-zinc mine as an example, such as figure 1 As shown, a complex sulfide ore beneficiation method containing sphalerite is used for beneficiation of ores whose sphalerite content accounts for at least 50% of the total amount of sphalerite, and may include the following steps:

[0035] Step 1. Put the raw ore into the ball mill, add water into the ball mill for grinding according to the liquid-solid ratio of 1:1, and the grinding fineness reaches -0.074mm, accounting for at least 70%.

[0036] Step 2, import the ground pulp into a magnetic separator (add water to adjust the concentration to about 35 wt%), and perform magnetic separation operation, thereby obtaining magnetic separation concentrate and magnetic separation tailings.

[0037] Step 3: Add lime 2000g / t to the magnetic separation concentrate to adjust the pH value to 10-13, and stir for 2 minutes, add activator copper sulfate 150g / t, and stir for 2 minutes, then add collectors in turn Butyl xanthate 5...

Embodiment 2

[0051] A lead-zinc ore mainly contains galena, sphalerite (part of sphalerite does not contain iron), pyrite, siderite, arsenopyrite, etc., and trace amounts of chalcopyrite, copper blue, limonite Wait. Most of the non-metallic minerals in the ore are quartz, followed by sericite, a small amount of orthoclase, kaolinite, chlorite, albite, and trace amounts of calcite, carbonaceous, rutile, etc. The main chemical composition analysis results of the ore are shown in Table 1 below:

[0052] Table 1

[0053] chemical composition Cu Pb Zn S Fe As SiO 2

content,% 0.092 2.86 3.10 8.87 10.95 1.22 54.15 chemical composition Al 2 o 3

MgO CaO Na 2 o

K 2 o

P - content,% 10.65 1.32 0.59 0.29 3.67 0.61 -

[0054] The complex sulfide ore beneficiation method of iron-containing sphalerite provided by the traditional mineral processing technology and the embodiment of the present invention 1 is respectively...

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Abstract

The invention discloses a beneficiation method for a complex sulfide ore containing marmatite. The beneficiation method comprises the following steps that a raw ore is ground and subjected to magneticseparation, so that the marmatite and magnetic separation tailings are obtained; zinc flotation is carried out on the marmatite so as to obtain a zinc concentrate; and sequential priority flotation is conducted on the magnetic separation tailings. According to the method, not only the zinc content in a copper (lead) concentrate is greatly reduced, the zinc recovery rate is improved, but also theusing amount of a flotation reagent is reduced, and the pollution to the environment is reduced.

Description

technical field [0001] The invention relates to the technical field of ore dressing, in particular to a method for beneficiating complex sulfide ores containing iron-containing sphalerite. Background technique [0002] Sphalerite is a type of sphalerite. Zinc atoms in sphalerite will be replaced by iron atoms, so sphalerite will contain iron. When the iron content in sphalerite exceeds 6%, it is called iron sphalerite. [0003] At present, the complex polymetallic ores containing iron sphalerite (for example: lead-zinc ore, copper-zinc ore, copper-lead-zinc ore, etc.) are all directly using the sequential priority flotation method to recover valuable metals, that is, the priority flotation of copper (lead ) minerals, a large amount of zinc sulfide inhibitors are added in the process of copper (lead) roughing and copper (lead) beneficiation to obtain copper (lead) concentrates, and then zinc sulfide activators are added to the flotation tailings of copper (lead) , Collector...

Claims

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Application Information

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IPC IPC(8): B03B7/00
CPCB03B7/00
Inventor 孙志健吴熙群李成必万丽曾克文于洋钱志博胡志凯周少珍
Owner BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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