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Improved method for cleaning tin rough concentrate

A technology of rough concentrate and tin concentrate, which is applied in the field of joint processing of tin coarse concentrate, can solve the problems of unrecycled tin, low grade of rich and medium ore, poor economic benefits, etc., and achieves great application and promotion value. , the effect of improving the recovery rate and improving the economic value

Inactive Publication Date: 2010-12-22
YUNNAN TIN GROUP HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The grade of rich middle ore is low, the economic value is not big, and the tin in the gravity separation tailings has not been recycled, and the economic benefits of the enterprise are not good

Method used

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  • Improved method for cleaning tin rough concentrate
  • Improved method for cleaning tin rough concentrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Chemical composition of tin rough concentrate, Sn8.37%, Fe12.02%, S3.56%.

[0015] Process conditions and results: tin coarse concentrate is slurried to a concentration of 25% by weight, after two stages of separation on a shaking table and one rewashing, a qualified tin concentrate 1 with a tin content of 45.5% is produced, and the tin recovery rate is 85.3% . Shaking table gravity separation tailings are fed into cassiterite flotation after grinding (-400 mesh accounts for 65%), desliming, impurity removal, and slurry adjustment. Join Na 2 CO 3 The solution was stirred, and the pH value of the slurry was adjusted to 9. Add 120g of sodium silicate + CMC combination inhibitor, 1200g of YY-1 cassiterite collector, and 30g of No. 2 oil per ton of dry ore. In one sweep, the tin concentrate product 2 containing 36.5% tin was obtained, and the tin recovery rate accounted for 12.5% ​​of the total ore supply. The sum of tin concentrate products 1 and 2 has a tin grade of 4...

Embodiment 2

[0017] Chemical composition of tin rough concentrate, Sn7.46%, Fe15.23%, S7.46%.

[0018] Technological conditions and results: tin coarse concentrate is adjusted to a concentration of 40% by weight, and sulfur is removed by flotation with a mechanical agitation flotation machine. For each ton of dry ore, 500g of copper sulfate, 100g of ethyl butyl mixed xanthate, and 2 No. oil 30g, the desulfurized product contains 0.9% sulfur. The sulfur-removed product is sorted in two stages on a shaking table and washed again once, and a qualified tin concentrate 1 with a tin content of 43.18% is produced, and the tin recovery rate is 84.98%. Shaking table gravity separation tailings are fed into cassiterite flotation after grinding (-400 mesh accounts for 70%), desliming, impurity removal, and slurry adjustment. Join Na 2 CO 3 The solution is stirred, and the pH value of the slurry is adjusted to 10. Add 150g of water glass + CMC combination inhibitor, 1000g of YY-1 cassiterite collec...

Embodiment 3

[0020] Chemical composition of tin rough concentrate, Sn10.56%, Fe10.23%, S2.55%.

[0021] Process conditions and results: tin coarse concentrate is slurried to a concentration of 25% by weight, after two-stage separation on a shaking table and one-time rewashing, qualified tin concentrate 1 with a tin content of 45.53% is produced, and the tin recovery rate is 86.02% . Shaking table gravity separation tailings are fed into cassiterite flotation after grinding (-400 mesh accounts for 75%), desliming, impurity removal, and slurry adjustment. Join Na 2 CO 3 The solution was stirred, and the pH value of the slurry was adjusted to 9.5. For each ton of dry ore, 100g of sodium silicate + CMC combined inhibitor, 800g of YY-1 cassiterite collector, and 30g of No. 2 oil were added to each ton of dry ore. In one sweep, a tin concentrate product 2 containing 36.5% tin was obtained, and the tin recovery rate accounted for 11.14% of the total ore supply. The sum of tin concentrate prod...

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Abstract

The invention relates to a method for cleaning tin-containing rough concentrate, which belongs to the technical field of nonferrous metal beneficiation and metallurgy. The method comprises the following processing steps of: performing pulp-mixing on the tin-containing rough concentrate, controlling the weight percentage concentration of the pulp to be between 20 and 25 percent and feeding the pulp into a table concentrator to perform gravity concentration so as to obtain a tin concentrate product 1, of which the tin content is between 40 and 45 percent; and grinding gravity tailings, of which the tin content is less than 2 percent, until 60 to 80 percent of ore can pass through a sieve of 400 meshes, performing the pulp-mixing until the weight percentage concentration of the pulp is between 40 and 60 percent and performing flotation to obtain a tin concentrate product 2, of which the tin content is between 30 and 40 percent. The method can obtain a high-grade qualified tin concentrate product and a second-grade tin concentrate product, has the advantage of efficiently recycling tin metal and can be applied to a tin raw ore treatment process as well as the development and utilization of tin pile-up tailings.

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. Separation system, the selection process generally adopts flotation to remove sulfur (if the sulfur content is greater than 5%), magnetic separation to remove iron (if the iron content is greater t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03B1/00B03B5/04B03D1/00
Inventor 潘基泽仇云华高乔林
Owner YUNNAN TIN GROUP HLDG
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