Combined flow treatment method of tin rough concentrate

A processing method and a technology of coarse concentrate, applied in chemical instruments and methods, wet separation, flotation, etc., can solve the problem of large area occupied by iron-containing materials, high labor intensity of operators, and failure to effectively recycle and other problems, to achieve the effect of difficult operation control, high production cost, and large storage area

Active Publication Date: 2010-08-04
YUNNAN TIN GROUP HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Using this beneficiation process, the ore is roughed, coarsely concentrated, and smelted, and the tin metal is effectively recovered, while the iron cannot be effectively recycled, and the iron-containing materials are stored in a large area, which has caused certain damage to the environment.

Method used

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  • Combined flow treatment method of tin rough concentrate

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Experimental program
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Effect test

Embodiment 1

[0015] Chemical composition of tin rough concentrate, Sn9.81%, Fe49.03%, S3.56%, As0.74%, SiO 2 1.40%, Al 2 o 3 11.52%, CaO2.66%, MgO0.828%. The yield of rough concentrate-200 mesh is 46.61%, and the tin metal rate is 65.33%. According to the chemical phase analysis of iron, red (brown) iron ore accounts for 88.45%, and magnetite, pyrrhotite, and pyrite account for 11.55%. The dissociation rate of monomer cassiterite is 83.61%. Minerals are dominated by metal minerals, accounting for 96.95% of the total minerals, and hematite is the main metal mineral, accounting for 49.23% of the total minerals; limonite and cassiterite are next, accounting for 30% of the total minerals respectively. 23.17% and 12.35%. Gangue minerals account for only 3.05% of the total minerals.

[0016] Process conditions and results: tin coarse concentrate is adjusted to a concentration of 25% by weight, separated by a Slon-500 vertical ring strong magnetic separator, and the magnetic field strength ...

Embodiment 2

[0018] Chemical composition of tin rough concentrate, Sn11.57%, Fe48.10%, S4.18%, As0.63%, SiO 2 1.42%, Al 2 o 3 2.50%, CaO1.26%, MgO0.50%. The yield of coarse concentrate-200 mesh is 51.99%, and the tin metal rate is 69.65%. Iron chemical phase analysis shows that red (brown) iron ore accounts for 85.50%, and magnetite, pyrrhotite, and pyrite account for 14.50%. The dissociation rate of monomer cassiterite is 85.68%. Minerals are dominated by metal minerals, accounting for 97.92% of the total minerals, and hematite is the main metal mineral, accounting for 47.36% of the total minerals; limonite and cassiterite are next, accounting for 40% of the total minerals respectively. 25.23% and 14.31%. Gangue minerals account for only 2.85% of the total minerals.

[0019] Process conditions and results: tin coarse concentrate is adjusted to a concentration of 25% by weight, separated by a Slon-500 vertical ring strong magnetic separator, and the magnetic field strength is adjuste...

Embodiment 3

[0021] Chemical composition of tin rough concentrate, Sn12.60%, Fe47.52%, S3.84%, As0.65%, SiO 2 1.023%, Al 2 o 3 4.88%, CaO2.56%, MgO0.756%. The yield of rough concentrate-200 mesh is 47.82%, and the tin metal rate is 68.13%. Iron chemical phase analysis shows that red (brown) iron ore accounts for 90.05%, and magnetite, pyrrhotite, and pyrite account for 9.95%. The dissociation rate of monomer cassiterite is 85.33%. Minerals are dominated by metal minerals, accounting for 97.26% of the total minerals, while hematite is the main metal minerals, accounting for 46.53% of the total minerals; limonite and cassiterite are next, accounting for 40% of the total minerals respectively. 24.12% and 13.31%. Gangue minerals account for only 2.75% of the total minerals.

[0022] Process conditions and results: tin coarse concentrate is adjusted to a concentration of 25% by weight, separated by a Slon-500 vertical ring strong magnetic separator, and the magnetic field strength is adju...

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Abstract

The invention relates to a combined flow treatment method of tin rough concentrate, belonging to the technical field of non-ferrous metal ore-dressing and metallurgy. The process flow comprises the following steps: preparing pulp containing the tin rough concentrate; feeding the tin rough concentrate subjected to the pulp preparation into a magnetic separator for dressing magnetic minerals; making sulfide minerals float out of non magnetic ore by a floating operation; sorting by using a table concentrator to obtain qualified tin rough concentrate and a lean middling ore product; combining a magnetic mineral and lean middling ore obtained by magnetic separation; and treating a mixture by a direct current submerged arc furnace to obtain tin dioxide soot and primary iron ingot. By adopting an ore-dressing and metallurgy combined process flow, the method greatly simplifies the ore-dressing and concentrating process flow. Iron products are treated by the direct current submerged arc furnace, so that not only tin metals of the iron products can be recovered, but also the primary iron ingot can be obtained and iron metals can be recycled while improving the tin recovery rate; and the invention improves the resource utilization rate and has favorable application and popularization prospect.

Description

Technical field: [0001] The invention relates to a combined treatment method of tin rough concentrate and belongs to the technical field of non-ferrous metal beneficiation and metallurgy. Background technique: [0002] In the past ten years, due to the decreasing resources of easy-to-separate tin ores, the nature of the ore processed in production and processing has become increasingly complex, and the ore selectivity has become worse and worse, and the mineral processing indicators have declined year by year. In order to ensure the quality and recovery rate of tin concentrate products, almost all tin concentrators adjust the beneficiation process to the rough selection stage to select tin rough concentrate containing 8-20% tin, and the rough concentrate is sent to the concentrate. The beneficiation system selects qualified tin concentrate with a grade greater than 40% and Fuzhong ore with a tin content greater than 3.5%. The qualified concentrate is handed over to the smelt...

Claims

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Application Information

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IPC IPC(8): C22B25/08C22B4/04C21B11/00B03B7/00B03C1/02B03D1/00
Inventor 雷毅王炜董瀚杨成林潘基泽仇云华王青温宗汉
Owner YUNNAN TIN GROUP HLDG
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