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Method for recovering oxidized fine-grained copper sulfide minerals through selective agglomeration flotation

A copper sulfide and selective technology, applied in flotation, solid separation, etc., can solve the problems that have not been reported, the complex environment of mineral flotation, and the interaction of copper and sulfur minerals, so as to save water resources, facilitate commercial acquisition, and effectively Conducive to the effect of industrialization promotion and use

Active Publication Date: 2021-12-03
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the research and application of selective hydrophobic agglomeration flotation of oxidized fine-grained copper sulfide minerals have not been reported yet.
After the fine-grained copper-sulfur minerals are oxidized, the mineral flotation environment will become more complicated, and due to the increase in the surface solubility of the minerals after oxidation, the interaction between copper-sulfur minerals is seriously affected

Method used

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  • Method for recovering oxidized fine-grained copper sulfide minerals through selective agglomeration flotation

Examples

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Embodiment 1

[0030] Due to the limitations of previous mineral processing technology and process conditions in a copper mine in Jiangxi, there are still some valuable copper metal minerals that have not been effectively recycled and stored in tailings ponds for a long time, and the surface of copper-sulfur minerals is severely oxidized. It is difficult to obtain a better separation effect by the process, and no qualified copper concentrate product can be obtained. After analysis, the composition of copper-sulfur minerals in the tailings is relatively complex, and the grades of copper and sulfur are relatively high, with a copper grade of 0.18% and a sulfur grade of 1.32%. The valuable metal copper sulfide minerals are mainly chalcopyrite and blue chalcocite, the associated iron sulfide minerals are mainly pyrite, the gangue minerals are mainly quartz, biotite, dolomite and calcite, and the copper-sulfur minerals have a fine particle size , below 20 μm. After pulping and solid-liquid separ...

Embodiment 2

[0033] A method for recovering oxidized fine-grained copper sulfide minerals by selective agglomeration flotation. The properties of the raw ore are the same as in Example 1. After the raw ore is subjected to pulping and solid-liquid separation, the iron-containing solution is subjected to a one-stage harmless treatment. In the process, the calcium oxide is 800g / t, and the polyacrylamide is 50g / t.

[0034] The test conditions in the sulfur-induced agglomeration flotation process are as follows: the pH value of the pulp is adjusted to 7.2; the sulfide agent is a combination of sodium sulfide and ammonium sulfide, the addition ratio is 2:1, the total amount of sulfide agent is 1500g / t, and the sulfide is stirred The time is 8 minutes; the collector is a combination of isobutyl xanthate and Z-200, the addition ratio is 3:1, the total amount of collector is 180g / t, the amount of terpineol oil is 40g / t, the stirring impeller speed 2100r / min, stirring for 5min, aeration for 2min, th...

Embodiment 3

[0036] A method for recovering oxidized fine-grained copper sulfide minerals by selective agglomeration flotation. The properties of the raw ore are the same as in Example 1. After the raw ore is mixed and solid-liquid separated, the iron-containing solution is subjected to two stages of harmless treatment. Calcium oxide 700g / t, polyacrylamide 60g / t in the first stage of treatment; calcium oxide 200g / t in the second stage of treatment, polyacrylamide 30g / t

[0037]The test conditions in the sulfur-induced agglomeration flotation process are as follows: the pH value of the pulp is adjusted to 7.2; the sulfide agent is a combination of sodium sulfide and ammonium sulfide, the addition ratio is 2:3, the total amount of sulfide agent is 1800g / t, and the sulfide is stirred The time is 8 minutes; the collector is butylammonium black drug, the total amount of collector is 250g / t, the amount of terpineol oil is 40g / t, the rotation speed of the stirring impeller is 2100r / min, stirring f...

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Abstract

The invention discloses a method for recovering oxidized fine-grained copper sulphide ore through selective agglomeration flotation. The method comprises the three steps of harmless treatment of flotation pulp, sulfur induced agglomeration of the oxidized fine-grained copper sulphide ore and rapid flotation recovery of the oxidized fine-grained copper sulphide ore; namely, the method comprises firstly, optimizing a flotation pulp environment, then adding a proper vulcanizing agent to selectively vulcanize oxidized fine-grained copper sulfide ores, and then adding a collecting agent and terpenic oil to increase the surface hydrophobicity of target ores and the apparent particle size of formed aggregates under the action of strong stirring, so as to realize the flotation of the fine-grained copper sulfide ores, and therefore, the flotation performance difference between the fine-grained copper sulfide minerals and common associated pyrite and gangue minerals is increased, and finally achieving the efficient flotation recovery of the oxidized fine-grained copper sulfide minerals. The method is simple in technological process, low in operation requirement, wide in medicament source, low in cost and high in copper recovery rate. In addition, the raw ore acidic water is recycled through harmless treatment, so that the method has the advantages of being economical, environmentally friendly and capable of saving water resources.

Description

technical field [0001] The invention belongs to the technical flotation recovery field of fine-grained copper sulfide minerals, and in particular relates to a method for recovering oxidized fine-grained copper sulfide minerals by selective agglomeration flotation. Background technique [0002] For most low-grade copper-bearing ores, fine grinding is often required in the beneficiation process to fully dissociate the minerals, and fine grinding will generate a large amount of fine-grained minerals. Due to the flotation of fine-grained minerals, there are problems such as large dosage of chemicals, non-selective adsorption of collectors, severe mechanical entrainment, and high foam viscosity, which makes the flotation recovery of valuable copper sulfide minerals extremely difficult. In addition, due to the higher surface energy of fine-grained copper-sulfur ores (especially pyrite and secondary copper sulfide minerals), they are widely used in ore body weathering, ore storage,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D1/02B03D1/14B03D101/02B03D101/00B03D103/02
CPCB03D1/018B03D1/02B03D1/14B03D2201/002B03D2201/02B03D2203/02Y02P10/20
Inventor 薛季玮任大伟卜显忠宛鹤屈垚犇涂华臻
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY