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Method for recovering valuable metal mineral in zinc tailing

A technology for valuable metals and tailings, applied in chemical instruments and methods, wet separation, magnetic separation, etc., can solve the problems of tailings resources not being effectively utilized, complex process flow, high production cost, etc., and achieve good results The effect of application and promotion prospect, simple technological process and low production cost

Active Publication Date: 2012-11-14
YUNNAN TIN GROUP HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The process is complicated, the production cost is high, and the wastewater containing pharmaceutical ingredients has a certain impact on the environment
[0010] To sum up, due to the complex properties of tin tailings and poor selectivity, it is difficult to effectively recover tin and iron (iron and manganese) by conventional mineral processing technology, and the tailings resources have not been effectively utilized

Method used

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  • Method for recovering valuable metal mineral in zinc tailing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Tin tailings contain Sn0.18%, Fe9.74%, S0.3%, As0.15%, grading by cyclone with a diameter of 300mm, rough magnetic separation (magnetic field strength 10000 Oersted), 70.53% tin metal , 81.3% of iron metal is enriched in magnetic products, after grinding (-200 mesh accounts for 61%), magnetic separation and concentration (magnetic field strength 4000 Oersted), the output iron grade is 59.51%, and the iron recovery rate is 32.47% Iron products; non-magnetic products are separated by three-stage shaking table to obtain tin-rich middle ore with a tin content of 3.6% and a tin recovery rate of 38.23%; two-stage magnetic separation (magnetic field strength 5000 Oersted), the output iron grade is 58.58 %, the iron product with an iron recovery rate of 28.89%; the fine mud part is deslimed, classified by a small diameter cyclone, sorted by a direct-current belt chute for sand settling, and sorted by a centrifugal concentrator-belt chute for overflow, and the obtained tin conten...

Embodiment 2

[0024] Tin tailings contain Sn0.21%, Fe18.6%, S0.6%, As0.49%, grading by 300mm diameter cyclone, magnetic separation roughing (magnetic field strength 9000 Oersted), 72.32% tin metal , 89.1% of iron metal is enriched in magnetic products, after grinding (-200 mesh accounts for 65%), magnetic separation and concentration (magnetic field strength 3500 Oersted), the output iron grade is 59.78%, and the iron recovery rate is 40.34% Iron products; non-magnetic products are sorted by three-stage shaking table to obtain tin middle ore with 3.58% tin content and 39.12% tin recovery rate; two-stage magnetic separation (magnetic field strength 4000 Oersted), the output iron grade is 59.68% , Iron products with an iron recovery rate of 26.17%; the fine mud part is deslimed and classified by a small-diameter cyclone, the sand is separated by a fine mud shaker, and the overflow is separated by a centrifugal concentrator-disc concentrator. Tin medium ore with 3.36% tin and 15.22% tin recove...

Embodiment 3

[0026] Tin tailings contain Sn0.29%, Fe20.76%, S0.5%, As0.36%, after grading by 300mm diameter cyclone, magnetic separation roughing (magnetic field strength 10000 Oersted), 71.19% tin metal , 82.2% of iron metal is enriched in magnetic products, after grinding (-200 mesh accounts for 65%), magnetic separation and concentration (magnetic field strength 4000 Oersted), the output iron grade is 60.21%, and the iron recovery rate is 38.67% Iron products; non-magnetic products are sorted by a three-stage shaker to obtain tin ore with a tin content of 3.58% and a tin recovery rate of 43.44%; two-stage magnetic separation (magnetic field strength 5000 Oersted), the output iron grade is 59.89% , Iron products with an iron recovery rate of 30.33%; the fine mud part is deslimed, classified by a small diameter cyclone, sorted by a fine mud shaker for sand settling, and a centrifugal concentrator for overflow - a disc concentrator, to obtain a tin content of 3.42 %, tin recovery rate of 1...

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Abstract

The invention relates to a method for comprehensively recovering a valuable metal in a zinc tailing and belongs to the technical field of metal beneficiation. The process procedure comprises the following steps: roughing the prepared zinc tailing under the magnetic field strength of 8,000 to 12,000 OE by taking an attractive mineral in the zinc tailing as a carrier; performing ore grinding on themagnetic material until the magnetic material which can pass through 200 meshes screen accounts for 60 to 70 percent for dissociating lead-zinc combination; selecting the ground magnetic mineral under the magnetic field strength of 2,500 to 4,000 OE to obtain an iron ore concentrate finished product with the grade of iron over 60 percent; and sorting a nonmagnetic material through a multi-sectiontable to obtain a tin-rich middling product with the grade of tin over 3 percent. The method has the advantages of increasing recovery rate of a tin metal, recovering ferrous metal and manganese metal in the zinc tailing, and effectively utilizing the tailing resource, along with simple beneficiation process flow, low production cost, environmental-friendliness and good application and popularizing prospect; and the fruit can be spread and applied to the development and exploiting of high-ferric and low-tin resources.

Description

technical field [0001] The invention relates to a technical method for comprehensively recovering valuable metal minerals in tin tailings and belongs to the technical field of metal ore beneficiation. Background technique: [0002] Tin resource is a scarce resource. All countries in the world pay attention to and protect tin as an important strategic resource. my country has listed tin resource as one of the five kinds of minerals for protective mining. In the process of tin beneficiation, the ores accounting for more than 90% of the ore volume are discharged as the tailings of the beneficiation plant and stored in the tailings pond. With the development of mine concentrator production, raw ore resources are decreasing year by year, and the old tailings that have been stored in tailings ponds in history have become one of the important backup resources for the sustainable development of mining enterprises. [0003] The characteristics of tin tailings resources are: low aver...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00B03C1/00B03B5/04
Inventor 雷毅高文翔程睿涵许志安仇云华罗崇文范立
Owner YUNNAN TIN GROUP HLDG
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