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A high-efficiency flotation collector of zinc sulfide and its application

A collector, zinc sulfide technology, applied in flotation, chemical instruments and methods, solid separation and other directions, can solve the problems of large amount of copper sulfate, slow zinc floating speed, low zinc recovery rate, etc., and achieve high wastewater treatment costs. , Efficient recovery of zinc, the effect of serious environmental pollution

Active Publication Date: 2021-08-27
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the existing problems in zinc sulfide flotation, the purpose of the present invention is to provide a high-efficiency flotation collector of zinc sulfide and its application. The collector of the present invention can significantly improve the recovery rate of zinc flotation and solve the Problems such as large copper consumption, slow zinc floating speed, and low zinc recovery rate

Method used

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  • A high-efficiency flotation collector of zinc sulfide and its application
  • A high-efficiency flotation collector of zinc sulfide and its application
  • A high-efficiency flotation collector of zinc sulfide and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A high-sulfur lead-zinc mine in Inner Mongolia is used as raw ore, with 3.01% lead, 2.43% zinc and 21.35% sulfur. The ore belongs to high-sulfur lead-zinc sulfide ore. The mineral composition of the raw ore is complex, and the useful minerals are distributed in a medium-fine manner. The main metal minerals in the ore are pyrite, galena and sphalerite, etc., and a small or trace amount of limonite, lead alum, white leadite, etc. . Zinc sulfide minerals in this mine are mainly sphalerite (containing Fe>8%), which has poor floatability and is difficult to recover by flotation. The high sulfur content of raw ore will interfere with the flotation of lead and zinc.

[0032] In this example, HQ-Zn consists of 2-hydroxyethyl dibutyl dithiocarbamate (structure shown in formula I), 2-hydroxyl-1-mercaptothiol (structure shown in formula II) and Octanol is 95.5%, 2%, 2.5% by mass percentage, after mixing evenly, add according to stock solution.

[0033]

[0034](1) The raw o...

Embodiment 2

[0050] The technological process is basically the same as that of Example 1, and HQ-Zn is used for zinc roughing, but the dosage of the medicament is adjusted. The flotation results are shown in 5# in Table 1.

[0051] Zinc rough selection: lime 500g / t, copper sulfate 200g / t, HQ-Zn 50 g / t, terpineol oil 9g / t; zinc sweep 1: HQ-Zn 30g / t; zinc sweep 2: HQ-Zn 15g / t t; zinc selection 1: lime 200g / t; zinc selection 2: lime 100g / t; the results are shown in 5# in Table 1.

Embodiment 3

[0053] The technological process is basically the same as that of Example 1, and HQ-Zn is used for zinc roughing, but the dosage of the medicament is adjusted. The flotation results are shown in 6# in Table 1.

[0054] Zinc rough selection: lime 500g / t, copper sulfate 200g / t, HQ-Zn 30g / t, terpineol oil 9g / t; zinc sweep 1: HQ-Zn 10 g / t; zinc sweep 2: HQ-Zn 5g / t; zinc selection 1: lime 200g / t; zinc selection 2: lime 100g / t; the results are shown in 6# in Table 1.

[0055] Table 1 Test 1#~Test 7# Full-process closed-circuit comparison test results / %

[0056]

[0057]

[0058] As can be seen from Table 1, HQ-Zn (embodiment 1 (7#)) is relatively single collector HEDD (comparative example 1 (1#)), DDM (comparative example 2 (2#)), DET (comparative example 3 (3#)), the grade of zinc in the zinc concentrate obtained by HQ-Zn is the highest, which is 51.41%, and the recovery rate of zinc operation is also the highest, which is 93.90%. , got better zinc flotation results. Com...

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Abstract

The invention discloses a high-efficiency flotation collector of zinc sulfide and its application. According to the mass percentage, it consists of the following components: 92%-98% of 2-hydroxyethyl dibutyl dithiocarbamate, 2‑Hydroxy‑1‑mercaptothiol 1.5% to 5%, octanol 0.5% to 3%. According to the synergistic effect of medicaments, 2-hydroxyethyl dibutyl dithiocarbamate, 2-hydroxy-1-mercaptothiol and non-ionic collector octanol are used as zinc combined collector. The combined collector has a good collection performance on zinc sulfide minerals, but a weak collection performance on pyrite, and can achieve the purpose of efficiently recovering zinc. The combined zinc collector HQ-Zn of the present invention, when obtaining a higher zinc recovery rate, the amount of copper sulfate is 1 / 5 to 1 / 2 of the copper sulfate in the butyl xanthate system, and the amount of HQ-Zn is 1 / 5 to 1 / 2 of the butyl xanthate system. 1 / 4~3 / 5 of that. After the present invention adopts the medicament and method, the raw ore containing 0.3% to 5% of lead, 0.3% to 7% of zinc and 1% to 25% of sulfur can be treated to obtain zinc grade > 50% in the zinc concentrate. Zinc recovery rate> 88%.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a high-efficiency flotation collector of zinc sulfide and its application. Background technique [0002] Zinc is an important strategic resource in my country and plays an important role in the non-ferrous metal industry. Zinc metal is mainly used in the manufacture of brass, galvanized and cast alloys etc. my country's zinc resources are mainly zinc sulfide ore, and zinc sulfide minerals are mainly iron / sphalerite. When the iron content in sphalerite reaches more than 6%, it is called iron sphalerite. With the increase of iron content in sphalerite, the adsorption amount of activator copper ions on its surface gradually decreased, which was not conducive to the adsorption of collectors. Therefore, sphalerite is less floatable than sphalerite. In the flotation separation of lead-zinc sulfide ores, compared with galena, the floatability of iron / sphalerit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/018B03B7/00B03B9/00B03D101/02B03D103/02B03D101/06B03D101/04
CPCB03B7/00B03B9/00B03D1/018B03D2201/02B03D2201/04B03D2201/06B03D2203/02
Inventor 魏茜焦芬覃文庆杨聪仁刘维韩俊伟董刘洋
Owner CENT SOUTH UNIV
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