Flotation recovery method for high-calcium-magnesium high-argillaceous zinc carbonate

A recovery method, high calcium and magnesium technology, applied in flotation, solid separation, etc., can solve the problems of high chemical consumption, poor selectivity, and not widely used, and achieve strong loading capacity, enhanced electronegativity, and strong inhibition Effect

Pending Publication Date: 2022-07-29
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most effective way to flotation zinc oxide ore in China is the sulfuration-amine salt flotation method; in the sulfuration xanthate flotation method, after the zinc oxide ore is heated and vulcanized, an activator needs to be added first to flotation, and in some flotation agents It consumes a lot, so it is not widely used in industry; the selectivity of fatty acid collectors to zinc oxide ore with large mud content is poor, so there is almost no application in industry

Method used

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  • Flotation recovery method for high-calcium-magnesium high-argillaceous zinc carbonate
  • Flotation recovery method for high-calcium-magnesium high-argillaceous zinc carbonate
  • Flotation recovery method for high-calcium-magnesium high-argillaceous zinc carbonate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The Zn content in a lead-zinc sulfide flotation tailing in Sichuan is about 1.50%. The zinc minerals are mainly smithsonite, followed by hemimorphite, hydrozinc, etc. The zinc oxidation rate is 80%. The main gangue minerals are Quartz, calcite, dolomite, chlorite, mica, etc., the content of CaO and MgO in the mineral sample is relatively high, and calcium and magnesium gangue minerals are easily argillized, of which the content of CaO is 24.3%, and the content of MgO is 18.2%, - The content of 10μm particle size reaches 40.5%, which belongs to high calcium magnesium and high muddy zinc-containing tailings. The closed circuit test results of Example 1 are shown in Table 1.

[0052] The specific process is as follows:

[0053] ⑴ Desilting flotation:

[0054] The lead-zinc sulfide flotation tailings are used as raw ore, and the amount of sludge collector (a) is 50g / t based on the dry ore weight of the raw ore. mud, respectively, to obtain mud-containing slurry and desli...

Embodiment 2

[0066] The content of Zn in a lead-zinc sulfide flotation tailing in Gansu is about 3.0%, and the oxidation rate of zinc is 90%. The main metal minerals in this ore sample are smithsonite, willemite, hemimorphite, limonite, white leadite, sphalerite, galena, etc. The gangue minerals are mainly quartz, dolomite, calcite, clay, etc. Minerals, sericite, kaolin, etc. Gangue minerals mica and clay minerals have better floatability, which will increase the amount of flotation reagents and reduce the grade of zinc concentrate during the flotation process. The closed circuit test results of Example 2 are shown in Table 1.

[0067] The specific process is as follows:

[0068] ⑴ Desilting flotation:

[0069] The lead-zinc sulfide flotation tailings are used as raw ore, and the amount of sludge collector (a) is 50g / t based on the dry ore weight of the raw ore. mud, respectively, to obtain mud-containing slurry and deslimed tailings slurry (for zinc oxide flotation).

[0070] Among t...

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Abstract

The invention relates to a high-calcium-magnesium high-argillaceous zinc carbonate flotation recovery method which comprises the following steps: (1) desliming flotation: taking lead-zinc sulfide flotation tailings as raw ores, adding a slime collecting agent, stirring and reacting for 3-6 minutes, and then desliming before zinc oxide flotation to respectively obtain slime-containing ore pulp and deslimed tailing ore pulp; (2) roughing zinc oxide: adding regulators of sodium carbonate, sodium sulfide, gangue inhibitor, lauryl amine acetate and butyl xanthate into the deslimed tailing pulp for roughing zinc to respectively obtain zinc rough concentrate pulp and roughed tailing pulp; (3) zinc oxide concentration: performing concentration operation on the zinc rough concentrate pulp twice to obtain zinc oxide concentrate; and (4) zinc oxide scavenging: performing one-time zinc oxide scavenging operation on the roughing tailing pulp to obtain zinc oxide scavenged tailings. According to the method, the floatability of the zinc oxide mineral can be remarkably enhanced, and better mineral separation technical indexes are obtained.

Description

technical field [0001] The invention relates to the technical field of mineral flotation separation in non-ferrous metal beneficiation, in particular to a flotation recovery method for high-calcium-magnesium and high-shale zinc carbonate. Background technique [0002] The ore composition of zinc oxide ore in my country is relatively complex, gangue and useful minerals are symbiotic, the zinc grade is low, the argillization is serious, and desliming is difficult. In order to achieve effective inhibition, it is difficult to enrich and efficiently recover zinc oxide minerals. At the same time, there are a lot of soluble salts in the oxidized ores. After the soluble salts dissolve, they adsorb on the surface of the target minerals, changing the surface properties of the minerals such as electrical properties and wettability. The changes in the surface properties of the minerals directly affect the flotation characteristics of the minerals. Some conventional The flotation process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/01B03D101/02B03D103/04
CPCB03D1/01B03D2201/02B03D2201/06B03D2203/04
Inventor 刘守信叶青师伟红何翔周涛马健飞栗威王源瑞黄国贤肖胤强戚福军王玲
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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