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A kind of beneficiation and smelting method of weak magnetic mineral-encapsulated sulfur-oxygen mixed zinc ore

A weak magnetic, wrapped technology, applied in the field of beneficiation and metallurgy, can solve the problems of difficult leaching of zinc minerals, consumption of leaching agents, etc., to reduce the difficulty of leaching, reduce the amount of ore, and improve the leaching speed and leaching rate.

Active Publication Date: 2020-01-10
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the zinc ore resources, some zinc oxide minerals are wrapped by weak magnetic minerals (such as hematite, limonite, biotite, etc.), and when the flotation method is used for recovery, the added flotation agents cannot be combined with the zinc wrapped in the ore. Minerals are in direct contact, so they cannot be hydrophobic and floated; when using wet leaching, the leaching agent used will not only react with the gangue minerals in the ore, and consume a large amount of leaching agent, but also the zinc minerals wrapped in the ore are also difficult to leach

Method used

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  • A kind of beneficiation and smelting method of weak magnetic mineral-encapsulated sulfur-oxygen mixed zinc ore

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Effect test

Embodiment 1

[0022] Embodiment 1: the mass percent content of zinc in the weak magnetic mineral wrapped type sulfur-oxygen mixed zinc ore of the present embodiment is 9.2%, and the oxidation rate of zinc is 70%. The content is 100%, the content of zinc in the weak magnetic minerals is 38%, and the weak magnetic minerals are hematite, limonite and biotite;

[0023] Such as figure 1 As shown, a method for dressing and smelting weakly magnetic mineral-wrapped sulfur-oxygen mixed zinc ore, the specific steps are as follows:

[0024] (1) Crush and grind the weakly magnetic mineral-encapsulated sulfur-oxygen mixed zinc ore to a mass percentage of -74μm, which accounts for 75% of the mass percentage, and adjust the slurry until the mass percentage concentration of the pulp is 25%. The weak magnetic mineral per ton For the encased sulfur-oxygen mixed zinc ore meter, add 800g vulcanizing agent (the vulcanizing agent is sodium sulfide), 350g activator (the activator is copper sulfate), 400g collect...

Embodiment 2

[0029] Embodiment 2: the mass percent content of zinc in the weak magnetic mineral wrapped type sulfur-oxygen mixed zinc ore of the present embodiment is 13.9%, and the oxidation rate of zinc is 81.5%. The content is 100%, the content of zinc in the weak magnetic minerals is 44%, and the weak magnetic minerals are hematite and limonite;

[0030] Such asfigure 1 As shown, a method for dressing and smelting weakly magnetic mineral-wrapped sulfur-oxygen mixed zinc ore, the specific steps are as follows:

[0031] (1) The weak magnetic mineral-encapsulated sulfur-oxygen mixed zinc ore is crushed and ground to a mass percentage of -74μm, accounting for 80.5%, and the slurry is adjusted to a mass percentage concentration of 32%. The weak magnetic mineral per ton For wrapped sulfur-oxygen mixed zinc ore meter, add 1050g vulcanizing agent (the vulcanizing agent is sodium sulfide), 450g activator (the activator is copper sulfate), 600g collector (the collector is butyl xanthate) and 80g...

Embodiment 3

[0036] Embodiment 3: the mass percent content of zinc in the weak magnetic mineral wrapped type sulfur-oxygen mixed zinc ore of the present embodiment is 18.5%, and the oxidation rate of zinc is 88.5%. The content is 100%, the content of zinc in the weak magnetic minerals is 50%, and the weak magnetic minerals are hematite and limonite;

[0037] Such as figure 1 As shown, a method for dressing and smelting weakly magnetic mineral-wrapped sulfur-oxygen mixed zinc ore, the specific steps are as follows:

[0038] (1) Crushing and grinding the weakly magnetic mineral-encapsulated sulfur-oxygen mixed zinc ore to a mass percentage of -74μm particle size accounted for 85%, and adjusted the slurry to a mass percentage concentration of 38%. The weak magnetic mineral per ton For wrapped sulfur-oxygen mixed zinc ore meter, add 1500g vulcanizing agent (the vulcanizing agent is sodium sulfide), 500g activator (the activator is copper sulfate), 800g collector (the collector is butyl xantha...

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Abstract

The invention discloses a dressing and smelting method for weakly-magnetic mineral coated-type vulcanization-oxidation mixed zinc ore, and belongs to the technical field of beneficiation and metallurgy. The method includes the steps that the weakly-magnetic mineral coated-type vulcanization-oxidation mixed zinc ore is subjected to flotation so that flotation zinc concentrate and flotation tailingscan be obtained; the flotation tailings are subjected to magnetic separation to obtain weakly-magnetic mineral coated zinc-containing magnetic concentrate and low-grade zinc-containing magnetic separation tailings; after the weakly-magnetic mineral coated zinc-containing magnetic concentrate is subjected to fine grinding treatment, concentrated sulfuric acid is adopted as a leaching agent, and high-temperature agitation leaching is conducted to recycle zinc minerals; and high-temperature ore pulp obtained after leaching of the magnetic concentrate is mixed with the zinc-containing magnetic separation tailings, and the zinc minerals in the tailings are further recycled with waste heat and residual acid inside. By adoption of the dressing and smelting method, the zinc minerals in the ore are recycled in a grading mode, the weakly-magnetic mineral coated-type vulcanization-oxidation mixed zinc ore is treated in a targeted mode, the waste heat and the residual acid are adopted to leach the zinc minerals in the low-grade zinc-containing magnetic separation tailings, the technical problem that the weakly-magnetic mineral coated-type vulcanization-oxidation mixed zinc ore cannot be recycled easily is solved economically and efficiently, and the comprehensive utilization rate of zinc resources is increased.

Description

technical field [0001] The invention relates to a beneficiation and smelting method of a weak magnetic mineral-wrapped sulfur-oxygen mixed zinc ore, which belongs to the technical field of beneficiation and metallurgy. Background technique [0002] Zinc is an important strategic resource, which is widely used in anticorrosion, machinery manufacturing, transportation, construction and other industries. Zinc exists mainly in the form of sulfides and oxides in nature. The common zinc sulfide minerals with industrial mining value include sphalerite and sphalerite, and zinc oxide minerals include smithsonite, hemimorphite, and willemite. Wait. However, in the mining and processing of zinc ore resources, in addition to single zinc sulfide and zinc oxide ores, sulfide-oxidation mixed zinc ores occupy a considerable proportion of zinc ore resources. With the rapid development of my country's national economy, the consumption of zinc is increasing year by year, while the easy-to-pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B9/00B03B9/06
CPCB03B9/00B03B9/06Y02W30/52
Inventor 丰奇成
Owner KUNMING UNIV OF SCI & TECH
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