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Inhibitor-free floatation separation method for high-sulfur copper and zinc sulphide ore difficult to float

A technology without inhibitors and separation methods, applied in flotation, solid separation, etc., can solve the problems of chemical waste, toxicity, and environmental impact, and achieve the effects of easy control, less mutual content, and effective recycling

Active Publication Date: 2015-01-21
厦门紫金矿冶技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The application of the above collectors and inhibitors often requires an excessive amount of agents to achieve better separation results, which will lead to waste of agents. At the same time, some agents are also toxic, which will have an impact on the environment.

Method used

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  • Inhibitor-free floatation separation method for high-sulfur copper and zinc sulphide ore difficult to float
  • Inhibitor-free floatation separation method for high-sulfur copper and zinc sulphide ore difficult to float
  • Inhibitor-free floatation separation method for high-sulfur copper and zinc sulphide ore difficult to float

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Comparison scheme
Effect test

Embodiment 1

[0056] The method of the present invention was used to conduct a beneficiation test study on a high-sulfur copper-zinc sulfide ore in Qinghai. The elemental analysis of the raw ore is shown in Table 1.

[0057] Table 1 Analysis results of raw ore elements / %

[0058]

[0059]

[0060] *g / t

[0061] As can be seen from the data in Table 1, the main metal elements recyclable in this mine are Cu and Zn. According to the properties of the raw ore, the process of the present invention is adopted. The specific process flow is shown in the appendix figure 1 . Mainly:

[0062] (1) Prioritize copper selection to obtain qualified copper concentrate;

[0063] (2) Re-select zinc to obtain qualified zinc concentrate.

[0064] as attached figure 1 As shown, the ore is ground first, and the number of ore particles with a diameter of no more than 0.043mm accounts for 85.40% of the total, and then flotation separation is carried out, and the copper selection step is given priority, a...

Embodiment 2

[0072] Adopt the inventive method to carry out copper-zinc separation to above-mentioned ore adopting MA / butyroxanthate combined collector, concrete technological process is as attached figure 1 Shown:

[0073] Grind the ore first, and the number of ore particles with a diameter of no more than 0.043mm accounts for 85.40% of the total, and then carry out flotation separation, giving priority to the copper selection step, roughing and adding lime to adjust the slurry potential -200 ~ -190mV, adding MA (produced by Hubei Jingjiang Mineral Dressing Chemicals Co., Ltd.) / butadiene xanthate combination collector, the dosage is 24 / 24g / t; the coarse concentrate is selected for 3 times, and only lime is added to adjust the pulp potential for each selection. The slurry potential is controlled at -200~-190mV for the selection; the slurry potential is -210~-200mV for the second selection; the slurry potential is -220~-210mV for the third selection; Add different amounts of MA / Dxanthate c...

Embodiment 3

[0081] Adopt the inventive method to carry out on-the-spot test to above-mentioned ore adopting MA / butyroxanthate combination collector, and raw ore element analysis is shown in Table 4, and concrete technological process is as attached figure 2 Shown:

[0082] Table 4 Results of multi-element analysis of raw ore / %

[0083]

[0084] *g / t

[0085] Since the concentrator is located on a plateau at an altitude of 4,200 meters, the air is thin and the oxygen content is low, only 0.6 atmospheres. Therefore, the corresponding parameters need to be adjusted accordingly, as follows:

[0086] Grind the ore first, and the number of ore particles with a diameter of no more than 0.043mm accounts for 80.25% of the total, and then carry out flotation separation, giving priority to the copper selection step, roughing and adding lime to adjust the slurry potential -120 ~ -110mV, adding MA xanthate combined collector, the dosage is 35 / 35g / t; the coarse concentrate is beneficiated for 3 t...

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Abstract

The invention relates to a metal sulphide ore floatation separation technology, in particular to an inhibitor-free floatation separation method for high-sulfur copper and zinc sulphide ore difficult to float. The floatation separation method comprises the following steps that (1) lime is used for adjusting the electric potential of ore pulp under appropriate grinding fineness, the electric potential of the ore pulp is controlled to be -250 mV to -100 mV, copper collectors such as thionocarbamate and xanthate are added, no sphalerite inhibitor is added, and copper is floated preferably; (2) copper tailings are floated to be added with copper sulfate so as to activate sphalerite, the electric potential of the ore pulp is controlled to be -220 mV to -70 mV, xanthate and number two oil are used for floating zinc, and finally a copper concentrate and a zinc concentrate are obtained. Compared with the prior art, by adjusting the electric potential of the ore pulp, the floatability of a copper mineral and the floatability of a zinc mineral are changed, and thus inhibitor-free copper and zinc floatation separation can be realized. The technological process is simple, controlling is easy, meanwhile, drug cost can be saved, and the drug cost can be lowered by 5%-10% compared with a traditional technology.

Description

technical field [0001] The invention relates to a flotation separation technology for metal sulfide ores, in particular to a depressant-free flotation separation method for refractory high-sulfur copper-zinc sulfide ores. Background technique [0002] my country is a country that lacks copper and zinc resources. It needs to import a large amount of copper-zinc ore from abroad every year. However, the reserves of copper-zinc ore resources in my country are relatively small, and most of them are poor, fine, miscellaneous and refractory ores. For these refractory ores, Chinese scientific and technological workers have conducted a lot of research, developed some effective agents and processes for copper-zinc separation, and realized effective separation and recovery of some copper-zinc ores. [0003] Gao Qipeng et al. used methyl thiourethane with good selectivity to preferentially select copper, and realized the effective separation of copper and zinc minerals. Tongdu Company ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D1/018B03D103/02
Inventor 黄怀国赖伟强张卿林鸿汉叶志勇黄思捷庄荣传
Owner 厦门紫金矿冶技术有限公司
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