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Fine particle embedded cassiterite beneficiation method

A beneficiation method and fine particle technology, which are applied in chemical instruments and methods, flotation, wet separation, etc., can solve the problems of poor rationality and high flotation cost, achieve stable beneficiation, improve the efficiency of shaking table gravity separation, and improve separation efficiency. Efficient effect

Active Publication Date: 2017-12-01
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some processes adopt pretreatment before cassiterite separation, or adopt a combined process flow, the problem of high cost or poor rationality of flotation has not been resolved

Method used

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  • Fine particle embedded cassiterite beneficiation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 Shown, this fine-grained cassiterite beneficiation method, its specific steps are as follows:

[0034] (1) Fine-grained cassiterite ore (the raw ore tin grade of a tin mine in Myanmar is 0.55wt%, and the main mineral composition is cassiterite, pyrite, quartz, calcite, etc.) Grinding to -0.074 by rod mill mm accounts for 85%, adjust the pulp until the pulp concentration is 25wt%, and add 150g of copper sulfate and 2000g of oxalic acid as regulator, 200g of butyl xanthate as collector, and 20g of terpineol as foaming agent on the basis of per ton of ore , carry out a pre-desulfurization flotation roughing to obtain sulfur rough concentrate and sulfur roughing tailings;

[0035] (2) Slurry the crude sulfur concentrate obtained in step (1) until the pulp concentration is 25wt%, and perform blank concentration, the number of separations can be 1, and the selected tailings are returned to the upper level of flotation in order to obtain sulfur Concentrate; ...

Embodiment 2

[0046] Such as figure 1 Shown, this fine-grained cassiterite beneficiation method, its specific steps are as follows:

[0047] (1) Fine-grained cassiterite ore (the raw ore tin grade of a tin mine in Myanmar is 0.6wt%, and the main mineral composition is cassiterite, pyrite, quartz, calcite, etc.) Grinding to -0.074 by rod mill mm accounts for 80%, adjust the pulp until the pulp concentration is 25wt%, and add 150g of copper sulfate and 2000g of oxalic acid as regulator, 200g of butyl xanthate as collector, and 20g of terpineol as foaming agent on the basis of per ton of ore , carry out a pre-desulfurization flotation roughing to obtain sulfur rough concentrate and sulfur roughing tailings;

[0048] (2) Slurry the crude sulfur concentrate obtained in step (1) until the pulp concentration is 25wt%, and perform blank concentration, the number of separations can be 1, and the selected tailings are returned to the upper level of flotation in order to obtain sulfur Concentrate; ...

Embodiment 3

[0059] Such as figure 1 Shown, this fine-grained cassiterite beneficiation method, its specific steps are as follows:

[0060] (1) Fine-grained cassiterite ore (the raw ore tin grade of a tin mine in Myanmar is 0.5wt%, and the main mineral composition is cassiterite, pyrite, quartz, calcite, etc.) Grinding by rod mill to -0.074 mm accounts for 85%, adjust the pulp until the pulp concentration is 25wt%, and add 150g of copper sulfate and 2000g of oxalic acid as regulator, 200g of butyl xanthate as collector, and 20g of terpineol as foaming agent on the basis of per ton of ore , carry out a pre-desulfurization flotation roughing to obtain sulfur rough concentrate and sulfur roughing tailings;

[0061] (2) Slurry the crude sulfur concentrate obtained in step (1) until the pulp concentration is 25wt%, and perform blank concentration, the number of separations can be 1, and the selected tailings are returned to the upper level of flotation in order to obtain sulfur Concentrate; ...

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Abstract

The invention relates to a fine particle embedded cassiterite beneficiation method, and belongs to the technical field of mineral processing. Fine particle embedded cassiterite ores are grinded by a rod grinding machine for primary advanced desulfurization flotation to obtain sulfur concentrates and predesulfurized tailings; the predesulfurized tailings are fed in a spiral chute for reselection to roughly select tin to obtain qualified tin concentrates and spiral chute tailings; the spiral chute tailings are classified to obtain three products of +0.053 mm thick particle grade, 0.053-0.038 mm medium particle grade and -0.038 mm fine particle grade; the shaker reselection is performed on the products of+0.053 mm thick particle grade and 0.053-0.038 mm medium particle grade to obtain shaker concentrates, middlings and tailings; the products of -0.038 mm fine particle grade are reselected by a centrifugal beneficiation machine to obtain tin concentrates and tailings; the shaker concentrates are merged with the tin concentrates reselected by the centrifugal beneficiation machine as qualified tin concentrates; the tailings are merged as final tailings; the shaker middlings are merged for cassiterite beneficiation to obtain tin thick concentrates; and the tin thick concentrates are reselected and finely selected by the centrifugal beneficiation machine to obtain qualified tin concentrates and tin-rich middlings. The method is lower in production cost and higher in recovery rate.

Description

technical field [0001] The invention relates to a beneficiation method for fine-grained cassiterite, which belongs to the technical field of mineral processing. Background technique [0002] Cassiterite is brittle and fragile, and it is prone to over-crushing during the grinding or crushing process, and it is easy to produce a large amount of secondary tin slime. The fine-grained cassiterite itself has a relatively fine particle size, and a large amount of slime is produced here during the fine grinding process. Due to the interference of a large amount of slime, the difficulty of beneficiation increases, and it is difficult to improve the recovery rate of fine-grained tin ore. The loss is serious. About 80% of the tin resources lost in my country every year are lost in tailings in the form of fine mud. [0003] Gravity separation and flotation are the two most important methods of cassiterite beneficiation. Gravity separation is an effective method for coarse-grained cas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03D1/00
CPCB03B7/00B03D1/00
Inventor 戴惠新饶兵高利坤王飞旺赵泓铭张磊吕玉辰
Owner KUNMING UNIV OF SCI & TECH
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