Combined inhibitor for flotation separation of complex refractory copper-lead sulfide ore and application of combined inhibitor

A technology of combining inhibitors and sulfide ore, applied in the directions of flotation, solid separation, process efficiency improvement, etc., can solve the problems of environmentally harmful sodium sulfite, can not meet the non-toxic environmental protection and other problems, and achieves low consumption of chemicals and good industrial application prospects , the effect of strengthening the inhibitory effect

Active Publication Date: 2022-02-18
CHINA MINMETALS CHANGSHA MINING RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is sodium sulfite harmful to the environment in the combined inhibitor used in the above technical scheme, which cannot meet the requirements of non-toxic and environmental protection

Method used

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  • Combined inhibitor for flotation separation of complex refractory copper-lead sulfide ore and application of combined inhibitor
  • Combined inhibitor for flotation separation of complex refractory copper-lead sulfide ore and application of combined inhibitor
  • Combined inhibitor for flotation separation of complex refractory copper-lead sulfide ore and application of combined inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Taking a copper-lead polymetallic sulfide mine in Yunnan as the object, the raw ore contains 0.28% Cu and 2.98% Pb, the main ore minerals are chalcopyrite, galena, sphalerite, and the main gangue minerals are calcite, quartz, Potassium feldspar, etc.;

[0027] In this example, the combination inhibitor of galena was added together with a mass concentration of 5% sodium perborate solution, 0.5% quaternary ammonium starch ether solution and 0.5% hydroxypropyl methylcellulose solution, and the addition ratio was 1:1.5: 2.5;

[0028] see figure 1 Shown, a kind of combined depressant that is used for the flotation separation of complex refractory copper-lead sulfide ore is used for the flotation separation of copper-lead sulfide ore, comprises the following steps:

[0029] S1, crush the raw ore taken to -2mm, and then grind the crushed ore finely until the particle size of the ore particles is -0.074mm, accounting for 75%, add water to adjust the slurry, so that the concen...

Embodiment 2

[0044] Taking a copper-lead metal sulfide mine in Sichuan as an example, the raw ore contains 0.45% Cu and 3.24% Pb, copper mainly exists in the form of chalcopyrite, lead mainly exists in the form of galena, and the embedded particle size is relatively fine;

[0045] In this example, the galena combined inhibitor is added together with a mass concentration of 5% sodium perborate solution, 0.5% quaternary ammonium starch ether solution and 0.5% hydroxypropyl methylcellulose solution, and the addition ratio is 1.5:2: 2.5; Compared with Example 1, the only difference is that the combined inhibitor dosage in the roughing process in step S3 is 600g / t, and other steps are basically the same as those in Example 1, so they will not be repeated here. Flotation separation The results are shown in Table 2.

[0046] Copper-lead mixed concentrate flotation separation result in table 2 embodiment 2

[0047]

[0048] As can be seen from the test results in Table 2, the application of th...

Embodiment 3

[0050] Taking a copper-lead metal sulfide mine in Hunan as an example, the raw ore contains 0.19% Cu and 2.37% Pb, the copper mainly occurs in chalcopyrite, and the lead mainly occurs in galena;

[0051] In this example, the combination inhibitor of galena was added together with a mass concentration of 5% sodium perborate solution, 0.5% quaternary ammonium starch ether solution and 0.5% hydroxypropyl methylcellulose solution, and the addition ratio was 1:2: 3; Compared with Example 1, the difference is only: add water glass 1200g / t in the rough selection process in step S2, add activated carbon 3000g / t in the rough selection process in step S3, combined inhibitor 800g / t, the first 250 g / t of combined inhibitors were added to the first selection, and 150 g / t of combined inhibitors were added to the second selection. The other steps were basically the same as those in Example 1, and will not be repeated here. The results of flotation separation are shown in Table 3.

[0052] Co...

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Abstract

The invention discloses a combined inhibitor for flotation separation of complex and refractory copper-lead sulfide ore. The combined inhibitor comprises sodium perborate, quaternary ammonium starch ether and hydroxypropyl methyl cellulose. The inorganic inhibitor and the organic inhibitor are combined, so that the synergistic effect of the agents is fully exerted, the inhibition effect on galena is enhanced, the mutual inclusion of copper and lead is reduced, and the copper-lead separation effect is good; the sodium perborate solution is added, so that oxidation sites on the surface of galena are improved, more quaternary ammonium starch ether and hydroxypropyl methyl cellulose are adsorbed on the surface of galena, and the inhibition effect on galena is enhanced; the flotation steps of bulk flotation and then flotation separation are adopted, non-target minerals can be removed to the maximum extent in the bulk flotation process, the workload of the follow-up flotation process is reduced, and the working efficiency of ore flotation is improved; and compared with a single galena inhibitor and a traditional inhibitor dichromate, the combined inhibitor has the advantages of being low in agent consumption, high in inhibition capacity, non-toxic and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a combined inhibitor used for the flotation separation of complex refractory copper-lead sulfide ores and its application. Background technique [0002] As an important non-ferrous metal mineral resource, copper and lead are widely used in various industries and are essential metal elements for China's economic development. The separation of copper-lead polymetallic sulfide ores has always been one of the important topics in the mineral processing industry. Because such ores are usually densely symbiotic and embedded with fine particle size, and galena and chalcopyrite have very similar buoyancy, copper-lead The separation of polymetallic sulfide ores is more difficult. In addition, with the continuous development and utilization of existing mineral resources, there are fewer and fewer rich ores available for direct use in our country, and the existing mineral resourc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/06B03D103/02
CPCB03D1/018B03D2201/06B03D2203/02Y02P10/20
Inventor 祁忠旭江旭孙大勇冯程欧阳林莉翟旭东李杰肖舜元宋水祥王硕王龙韩远燕闫国辉李昭旺朱志伟周浩陈巧妹
Owner CHINA MINMETALS CHANGSHA MINING RES INST
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