Polymetallic (iron, tin and zinc) ore comprehensive recovery beneficiation method

A technology of polymetallic ore and mineral processing methods, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of environmental pollution of flotation wastewater, large consumption of flotation reagents, and complicated process flow, etc., and achieve reduction of flotation The comprehensive cost of dressing equipment and mineral processing is low, and the process is short

Inactive Publication Date: 2012-11-14
YUNNAN TIN GROUP HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the grinding particle size required by flotation is very fine in the above process, not only the grinding energy consumption is high, but also the cassiterite is over-crushed, which seriously affects the recovery of tin; The amount of pulp in the beneficiation operation is large, and the concentration and dehydration operation must be added before flotation; and flotation generally has a large area, small processing capacity, large energy consumption, large consumption of flotation reagents, and flotation wastewater has certain pollution to the environment. Complex process and other issues

Method used

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  • Polymetallic (iron, tin and zinc) ore comprehensive recovery beneficiation method

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Effect test

Embodiment 1

[0018] Implementation 1: In this implementation, the iron-tin-associated zinc-tungsten-arsenic ore in a concentrator is used as the raw material for production.

[0019] The ore contains Sn0.63%, Fe33.33%, As0.94%, Zn0.53%. After the raw ore is ground, it undergoes a magnetic field strength of 1800 Oersted rough separation, and the magnetic product is ground and then passed through a magnetic field strength of 1000. Oersted's secondary concentration produces iron concentrate with a yield of 45.70%, a grade of 64.01%, and a recovery rate of 87.77%. The magnetic roughing tailings and the concentrated tailings are combined to undergo a sweep with a magnetic field strength of 1200 Oersted , the non-magnetic mineral materials are directly classified, and the coarse sand of +0.039mm is sorted on the first-stage shaking table and the re-washing shaker. The middle ore mill reaches 200 mesh, accounting for 70%, and it enters the second-stage shaking table and the re-washing shaker. The...

Embodiment 2

[0020] Implementation 2: The ore contains Sn0.67%, Fe34.17%, As1.04%, Zn0.57%. After the raw ore is ground, it undergoes magnetic separation with a magnetic field strength of 1800 Oersted, and the magnetic product is ground and then passed through a magnetic field. The secondary concentration of 1400 Oersted yields 45.13% iron concentrate with a grade of 65.22% and a recovery rate of 86.14%. The non-magnetic mineral materials are directly classified, and the coarse sand of +0.039mm is sorted by a shaking table and a rewashing shaking table. Heavy sand products are obtained by re-washing shaker separation; fine mud is subjected to rough separation by centrifuge, and belt chute is selected to obtain fine mud and heavy sand; heavy sand products are subjected to mixed flotation of zinc and arsenic; flotation foam is then separated from arsenic and zinc to produce grades Zinc concentrate with a grade of 45.74% and a recovery rate of 66.07%, and arsenic concentrate with a grade of 4...

Embodiment 3

[0021] Implementation 3: The ore contains Sn0.63%, Fe33.3%, As1.17%, Zn0.51%. After the raw ore is ground, it undergoes magnetic separation with a magnetic field strength of 1600 Oersted, and the magnetic product is ground through 1000 Oersted. The special secondary selection produces iron concentrate with a yield of 45.81%, a grade of 66.06%, and a recovery rate of 87.71%. The mineral material is directly classified, and the coarse sand of +0.039mm is sorted by the first-stage shaking table and the re-washing table. The heavy sand product is obtained; the fine mud is subjected to rough selection in a centrifuge, and the belt chute is selected to obtain fine mud and heavy sand; the heavy sand product is subjected to mixed flotation of zinc and arsenic; the flotation foam is then separated from arsenic and zinc, and the output grade is 46.66%, and the recovery rate is 69.06% % zinc concentrate, and arsenic concentrate with a grade of 59.16% and a recovery rate of 46.11%. The fl...

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Abstract

The invention relates to a polymetallic (iron, tin and zinc) ore comprehensive recovery combined beneficiation method, which belongs to the technical field of nonferrous metals ore beneficiation. The method comprise the steps of: smashing, grinding, magnetically separating ores to obtain iron ore concentrate; reselecting non-magnetic ore directly to obtain a tin, zinc, arsenic and tungsten heavy concentrate product; carrying out zinc and arsenic bulk flotation for the heavy concentrate product to obtain zinc and arsenic bulk concentrate; further separating the zinc and arsenic bulk concentrate to obtain zinc concentrate and arsenic concentrate, wherein floated tailings are tin and tungsten concentrates; then concentrating by a swing table to further separate high grade tin concentrate, tungsten concentrate, and tin-richened middlings. The polymetallic (iron, tin and zinc) ore comprehensive recovery combined beneficiation method provided by the invention is short in process flow, simple in method, simple to operate, energy-saving, small in occupied area, low in comprehensive cost of beneficiation, and high in recovery yield of associated metals such as iron, tin and the like.

Description

technical field [0001] The invention relates to an iron-tin-zinc polymetallic ore comprehensive recovery combined beneficiation method, which belongs to the technical field of nonferrous metal ore beneficiation. Background technique [0002] The zinc-tungsten-arsenic ore associated with iron-tin ore is rich in tin, zinc, tungsten, copper, arsenic and other elements in addition to the high content of the main metal iron, which can be comprehensively recovered. It is mainly in the form of solid, followed by dense block, and the particle size of various minerals is uneven, so it is difficult to separate minerals. [0003] At present, the magnetic-flotation-heavy process is mainly used to process this type of ore, that is, the raw ore is crushed and ground, and then magnetically separated to obtain iron concentrate, and the non-magnetic ore is preferentially flotation to produce zinc concentrate, and the flotation tailings are further processed. Carry out gravity separation to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00
Inventor 潘基泽杨冰高乔林仇云华陈红兵
Owner YUNNAN TIN GROUP HLDG
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