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Branch gravity concentration method for recovering accompanying tin from semi-finished product of magnetic concentrated iron of iron-tin ore

A technology of magnetic separation and tin ore, which is applied in the field of iron-tin ore magnetic separation iron intermediate product associated recovery tin branch gravity separation, can solve the problems affecting the quality, tin can not be effectively recovered, etc., to achieve effective recovery, eliminate impact, reduce interference Effect

Inactive Publication Date: 2011-10-26
YUNNAN TIN GROUP HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Throughout the domestic and foreign ore concentrators, most of them are mainly recycling iron. The iron concentrate contains high tin, and the tin in the iron concentrate affects its quality, and the tin cannot be recovered effectively. few reports

Method used

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  • Branch gravity concentration method for recovering accompanying tin from semi-finished product of magnetic concentrated iron of iron-tin ore
  • Branch gravity concentration method for recovering accompanying tin from semi-finished product of magnetic concentrated iron of iron-tin ore
  • Branch gravity concentration method for recovering accompanying tin from semi-finished product of magnetic concentrated iron of iron-tin ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Example 1: In this example, iron-tin-associated zinc-tungsten-arsenic ore in a dressing plant is used as the production object. The raw ore is ground to 200 mesh, accounting for 45%. Concentrate, the iron coarse concentrate is 65% through the second-stage grinding of 200 mesh, and then through the second magnetic concentration of 1100 Oersted magnetic field strength, the obtained concentrated ore is 95% after the third-stage grinding of 200 mesh , and then through three times of magnetic concentration with a magnetic field strength of 1000 Oersted to produce iron concentrate, the magnetic roughing tailings and magnetic concentration tailings are combined to go through a magnetic (finish) sweep of 1400 Oersted, and the concentrate is swept Shaking table tin separation is carried out again to produce high-iron tin-rich medium ore, and at the same time, some high-quality iron concentrates and some shaking table tin tailings are produced, and the shaking table tin tailings e...

Embodiment 2

[0013] Example 2: In this example, iron-tin-associated zinc-tungsten-arsenic ore in a dressing plant is used as the production object. The raw ore is ground to 200 meshes, accounting for 45%. After grinding, the iron rough concentrate is produced through magnetic separation of 1200 Oersted , 65% of the iron coarse concentrate is 200 mesh through the second-stage grinding, and then through the second selection of 1200 Oersted, and the concentrated ore is 95% after the third-stage grinding of 200 mesh, and then passed through 1200 Oersted Iron concentrate is produced by three times of beneficiation, the rougher tailings and the concentrated tailings are combined to undergo a 1400 Oersted magnetic (finish) scavenging, and the magnetic (fine) scavenging concentrate is then subjected to a shaking table tin selection, While producing high-iron tin-rich medium ore, some high-quality iron concentrates and some shaker tin tailings are also produced. The shaker tin tailings will then ent...

Embodiment 3

[0016] Example 3: In this example, the iron-tin-associated zinc-tungsten-arsenic ore in a dressing plant is used as the production object. The raw ore is ground to 200 meshes, accounting for 45%. After grinding, the iron rough concentrate is produced through magnetic separation at 1300 Oersted , the iron coarse concentrate is 65% after the second-stage grinding to 200 mesh, and then through the second selection of 1200 Oersted, and the iron concentrate is 95% after the third-stage grinding to 200 mesh, and then passed the 1100 Oersted Special three-time selection produces iron concentrate, roughing tailings and concentrated tailings are combined to undergo a 1400 Oersted magnetic (finish) sweep, and the magnetic (fine) sweep concentrate is then subjected to a shaker tin separation , while producing high-iron tin-rich medium ore, some high-quality iron concentrates and some shaker tin tailings are also produced, and the shaker tin tailings enter the second-stage bed grinding of ...

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Abstract

The invention relates to a branch gravity concentration method for recovering accompanying tin from a semi-finished product of magnetic concentrated iron of iron-tin ore and belongs to the technical field of non-ferrous metal ore beneficiation. The method comprises the following steps: (1) performing magnetic separation after grinding iron-tin accompanying raw ore, grinding the separated magnetic ore and then performing magnetic separation on the separated magnetic ore, and repeating the operations for more than two times, thereby acquiring iron ore concentrate, wherein more than 75% of final grain size of the grinded ore is above 200 meshes and the intensity of a magnetic field for magnetic separation is 900-1300 oersteds; (2) performing a magnetic scavenging process on non-magnetic tailings which are from each stage of magnetic separation, wherein the intensity of the magnetic field is 1200-1400 oersteds; and (3) performing a table gravity concentration process on the ore which is acquired from the magnetic scavenging process, thereby acquiring a middling product rich in iron and tin, iron ore concentrate and table tin tailings. The branch gravity concentration method provided by the invention has the advantages that the method is simple, the operation is easy, the energy source is saved, the process flow is short, the purpose of comprehensively recovering iron and tin is achieved, the recovery rate of iron and tin is high, and the comprehensive cost of beneficiation is low.

Description

technical field [0001] The invention relates to a branch re-separation method for the accompanying recovery of tin as an intermediate product of iron-tin ore magnetic separation, and belongs to the technical field of non-ferrous metal ore beneficiation. Background technique [0002] The associated ore of iron-tin ore, in addition to the high content of the main metal iron, is also rich in various elements such as tin, which can be comprehensively recovered. Its components and their symbiotic relationships are complex. The particle size of the embedding distribution is uneven, and the separation of ore dressing is difficult. Throughout the domestic and foreign ore concentrators, most of them are mainly recycling iron. The iron concentrate contains high tin, and the tin in the iron concentrate affects its quality, and the tin cannot be recovered effectively. Reports are rare. Therefore, people have been looking for a simple and effective separation method to recycle this par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C1/00
Inventor 杨冰潘基泽陈红兵仇云华
Owner YUNNAN TIN GROUP HLDG
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