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Separation method for high-arsenic high-sulfur tin rough concentrate

A separation method and rough concentrate technology, which is applied in the field of separation of high-arsenic and high-sulfur tin rough concentrate, can solve problems such as unsatisfactory recovery indicators, inconvenient popularization and application, and cumbersome operation, so as to reduce the problem of excessive sulfur and arsenic and improve the product structure. Reasonable distribution, preventing cassiterite from being easily crushed

Inactive Publication Date: 2019-08-20
广东省资源综合利用研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the defects or deficiencies of the separation method of tin rough concentrate in the prior art, such as lengthy process, cumbersome operation, inconvenient popularization and application, and unsatisfactory comprehensive recovery index, and to provide a high-arsenic and high-sulfur tin rough concentrate Separation method

Method used

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  • Separation method for high-arsenic high-sulfur tin rough concentrate
  • Separation method for high-arsenic high-sulfur tin rough concentrate

Examples

Experimental program
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Effect test

Embodiment 1

[0038] This embodiment provides a method for separating high-arsenic and high-sulfur tin rough concentrate. Such as figure 1 , the specific steps and the amount of each substance are as follows and Table 1.

[0039] The tin coarse concentrate is pre-screened-closed-circuit grinding (after the tin coarse concentrate is pre-screened, the product on the screen is repeatedly ground-screened), and ground to -0.25mm; adjust the pulp concentration to 30%; add Sulfuric acid is used to adjust the pH of the pulp to 6; operate according to the dosage of chemicals listed in Table 1, and perform flotation (one roughing, one sweeping, two sweeping, roughing foam for three times of blank separation) to obtain sulfur concentrate and floating sulfur tailings ore, after the floating sulfur tailings are passed through the shaking table (shaking table roughing, shaking table sweeping), tin concentrate, tin sub-concentrate and shaking table tailings are obtained; the shaking table tailings are su...

Embodiment 2

[0042] This embodiment provides a method for separating high-arsenic and high-sulfur tin rough concentrate. Such as figure 1 , the specific steps and the amount of each substance are as follows and Table 1.

[0043]The tin coarse concentrate is pre-screened-closed-circuit grinding (after the tin coarse concentrate is pre-screened, the product on the screen is repeatedly ground-screened), and ground to -0.25mm; adjust the pulp concentration to 30%; add Sulfuric acid is used to adjust the pH of the slurry to 5; operate according to the dosage of chemicals listed in Table 1, flotation (one roughing, one sweeping, two sweeping, roughing foam for three times of blank separation) to obtain sulfur concentrate and floating sulfur tailings ore, the floating sulfur tailings are passed through the shaker to obtain tin concentrate, tin sub-concentrate and shaker tailings; the shaker tailings are subjected to flotation separation: the shaker tailings are ground to -0.074mm to account for ...

Embodiment 3

[0046] This embodiment provides a method for separating high-arsenic and high-sulfur tin rough concentrate. Such as figure 1 , the specific steps and the amount of each substance are as follows and Table 1.

[0047] The tin coarse concentrate is pre-screened-closed-circuit grinding (after the tin coarse concentrate is pre-screened, the product on the screen is repeatedly ground-screened), and ground to -0.25mm; adjust the pulp concentration to 30%; add Adjust the pH of the pulp to 6 with oxalic acid; operate according to the amount of chemicals listed in Table 1, and obtain sulfur concentrate and floating sulfur tailings by flotation (one roughing, one sweeping, two sweeping, roughing foam for three times blank selection) ore, the floating sulfur tailings are passed through the shaker to obtain tin concentrate, tin sub-concentrate and shaker tailings; the shaker tailings are subjected to flotation separation: the shaker tailings are ground to -0.074mm to account for 85%, and ...

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Abstract

The invention relates to a separation method for high-arsenic high-sulfur tin rough concentrate. The separation method comprises the following steps of 1, conducting screening and ore grinding in advance; 2, conducting slurry mixing; 3, conducting flotation separation; 4, conducting gravity separation; and 5, conducting flotation separation. According to the separation method, the mode of prescreening and closed circuit grinding is adopted, the problem that tinstone is likely to be over-crushed is effectively prevented, and in addition, it is guaranteed that the flotation removal selection particle size of arsenic-sulfur ore is guaranteed; the floatability difference generated among pyrite, arsenopyrite and the tinstone is utilized, and in an acid environment, the arsenic-sulfur ore is activated through an activating agent; the arsenic-sulfur ore is removed through flotation, and the problem that sulfur and arsenic of tin concentrate are out of standard is effectively reduced; screening is conducted through a multi-segment table and floatation of the tinstone, the product structures of the tin concentrate and tin sub-concentrate can be distributed more reasonably. The tin grade ofthe tin concentrate obtained through the beneficiation method is greater than 45%, and the recovery rate of tin is greater than 85%; the tin grade of the tin sub-concentrate is greater than 4%, and the recovery rate of tin is greater than 11%; and according to the technical indicators, the quality of the sulfur and the arsenic of the tin concentrate meets the standard requirement.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a method for separating high-arsenic and high-sulfur tin rough concentrate. [0002] technical background [0003] With the gradual reduction of tin placer resources in my country, tin-containing polymetallic sulfide ores have become the main source of tin. However, such tin resources generally have high sulfur content, large differences in the buoyancy of sulfide ores, and complex ore properties, making it difficult for the content of impurity elements such as sulfur and arsenic in tin concentrates to meet the quality standards for tin concentrates (YS / T 339-2011 ): tin grade > 40%, sulfur grade < 1.20%, arsenic grade < 0.80%. It not only affects the sales price of tin products, but also creates disadvantages for subsequent smelting and deep processing. [0004] At present, the separation methods of tin crude concentrate mainly include gravity separation, fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03B9/00B03B5/04B03B1/00B03D1/02B03D101/00
CPCB03B1/00B03B5/04B03B7/00B03B9/00B03D1/025B03D2201/007
Inventor 汪泰胡真叶小璐邱显扬汤玉和李汉文邹坚坚付华李沛伦王成行姚艳清杨凯志
Owner 广东省资源综合利用研究所
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