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Method for recovering tin metal from low-grade tin old tailings

A tin metal, low-grade technology, applied in the field of tin metal recovery from low-grade tin tailings, can solve problems such as difficult to achieve effective recovery and utilization of tin metal, achieve good promotion and application prospects, improve tin recovery rate indicators, reduce investment The effect of beneficiation amount

Inactive Publication Date: 2021-03-26
云南锡业研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] To sum up, the current methods of beneficiation or combination of beneficiation and metallurgy are difficult to realize the effective recovery and utilization of tin metal in low-grade tin-bearing tailings with abundant reserves in my country

Method used

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  • Method for recovering tin metal from low-grade tin old tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Tin old tail mine sample contained: SN0.177%, FE12.22%, PB0.902%, Zn0.412%, Cu0.12%, MnO1.23%, SiO 2 12.12%, CaO15.08%, Al 2 O 3 11.33%. The sample was analyzed, and the yield of -0.074 mm yield was 73.35%, of which the yield of -0.010 mm yield was 37.23%, the tin containing range was 0.113%, and the tin metal rate was 23.71%. The sample is graded, grinding, and the pre-enrichment enters the flotation dehydrated product containing 10.524%, the minerals are pulped, and sodium hydroxide is 1600 g / t, water glass 5000g / t, and the stone map 300g / T after T after T, a coarse selection, a selection of calcium-containing impurities, the impurity contains 33.7%, including 0.075% of the tin, and a tin metal rate of 2.05%. Duedrawal of the slurry of the slurry of the slurry, stirred, precipitate, concentrates 3% micro-mud, adjusted the tin slurry concentration, and adjusted the mine concentration of 35% to the tin stone flotation. Tinite flotation coarse selection is added to the...

Embodiment 2

[0040] Tin old tail mine sample is in Example 1. The sample is graded, grinding, and the pre-enrichment enters the lyophilized flotation work product containing 0.546%, adding sodium hydroxide 1800 g / t, water glass 4000 g / t, and the stone mam soap 250g / t is detached. The chosen, the ore gas is pulp, once a coarse selection, a selection of calcium impurities, 34.14% of the impurity containing calcium, including 0.087% of the tin, and 1.86% tin recovery rate. Duedrawal of the slurry of the slurry of the slurry, stirred, precipitate, concentrate, and adjust the concentration of the slurry to 33%, and enter the tin flotation. The tin stone flotation coarse selection is added to the oxalic acid 1000 g / t, the capture agent TL-11400G / T, the auxiliary collector P86 120G / T; Capture I, the selection II adds a capture agent TL-1 400 g / t, Accessories P86 40G / T; Preferred I Additive: Capture TL-1 150 g / t. In the end, it was 5.81% of the wealth of 中 中 otters and the total proc...

Embodiment 3

[0042] Tin old tail mine sample is in Example 1. The sample is graded, grinding, and the pre-enrichment enters the lyophilized flotation work product containing 0.533%, adding sodium hydroxide 1700 g / t, water glass 5000g / t, and then deductive floating Select, minerals are pulp, once a coarse selection, once after a selection, the calcium impurities are removed, and the impurity contains 36.03%, including the tin containing 0.071%, and the tin metal rate is 2.11%. Duedrawal of the slurry of the slurry, the slurry is added 3 times the water, stirring, precipitate, concentrates 3% micro-mud, adjusting the mine concentration to 35%, and enter tin stone flotation. The tin stone flotation coarse selection is added to the oxalic acid 800 g / t, the collector TL-11600G / T, the auxiliary catching agent P86 150G / T; scans I, the selection II, the selection III (three cleaning) is added to add arrested Receiving TL-1500G / T, auxiliary catching agent P86 40g / t; selected I added a cap...

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Abstract

The invention relates to a method for recovering tin metal from low-grade tin old tailings. The method comprises the following steps: grading the tin old tailings pulped by using a cyclone; after grading, grinding + 0.045 mm size fraction minerals till 0.015 mm size fraction minerals account for 100%; combining the graded 0.045 mm product with the ground 0.015 mm product and carrying out pre-enrichment; carrying out flotation on the enriched concentrate for impurity removal; adding water to rinse after removing calcium-containing impurities, removing reagents, and concentrating; and finally, carrying out tinstone flotation to obtain a product rich in middlings, the tin grade of which is greater than 5%. The method is simple in technological process, good in beneficiation index, low in operation cost and easy to implement industrially, and has good application and popularization prospects.

Description

Technical field [0001] The present invention belongs to the technical field of metal mineral alien, and is specifically related to the method of recovering tin metal from low product tail mine. [0002] technical background [0003] my country has a history of tin mine in our country, and the tailing mine stored in tailings reached hundreds of millions of tons, and tin metal has reached several hundred thousand tons. At the same time, with the rapid development of my country's industrialization, as the foundation of the pillar industry, tin resources have been utilized by a large number of mining, and the reserves are reduced year by year, and the tail mine is still growing at an amazing speed. The loss and idleness of these tailings not only occupy a large amount of land resources, pollute the environment, causing serious waste of resources, while the tin old tailings in the last time, due to the backwardness of the original mineralization technology, there is still a large numbe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B04C9/00B03D1/00C22B3/00C22B7/00C22B25/06
CPCB04C9/00B03D1/00C22B25/06C22B25/04C22B7/008B03D2203/04Y02P10/20
Inventor 仇云华蔡涛张慧张翔温晓娜
Owner 云南锡业研究院有限公司
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