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Method for recovering cassiterite from tin-containing sulphide ore

A technology of sulfide ore and cassiterite, which is applied in the direction of solid separation, etc., can solve the problems of cassiterite grade and recovery index deterioration, uneven coarse and fine particles, etc., and achieve the effect of reducing mineral processing costs and efficient recovery

Active Publication Date: 2021-01-19
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In cassiterite beneficiation and recovery, single gravity separation or flotation process is difficult to solve the problem of uneven coarse and fine particles economically and efficiently, and there are high sulfur and high mud conditions, and the grade and recovery rate of cassiterite will deteriorate

Method used

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  • Method for recovering cassiterite from tin-containing sulphide ore

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Experimental program
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Effect test

Embodiment 1

[0033] Embodiment 1: as figure 1 As shown, the beneficiation method for reclaiming cassiterite in a tin-containing polymetallic sulfide ore dressing plant in a certain place in Wenshan, Yunnan, the specific operation is as follows:

[0034] The original ore in this place is a polymetallic deposit mainly composed of copper, zinc, tin and iron. The ore composition is complex. There are 2 kinds of tin-containing minerals. The stone minerals are mainly quartz, biotite, chlorite and potassium feldspar, with contents of 18.64%, 21.12%, 18.11% and 11.59% respectively. The original technological process of this site is: flotation copper separation → flotation zinc separation → magnetic separation of iron → flotation desulfurization → shaking table tin separation process. Sulfur removal, magnetic separation and iron removal, cassiterite classification for narrow-grain separation, coarse-grain re-flotation combination, fine-grain desliming, branch series flow carrier flotation and re-e...

Embodiment 2

[0050] Embodiment 2: the beneficiation method of reclaiming cassiterite in a tin-containing polymetallic sulfide ore dressing plant in a certain place, the specific operations are as follows:

[0051] The original ore in this place is a polymetallic deposit mainly composed of copper, zinc, tin, iron and sulfur. The ore composition is complex. The content of cassiterite is 0.27%, and the sulfur content is 7.12%. The gangue minerals are quartz, biotite, chlorite and potassium. Feldspar is the main content, the contents are 20.53%, 18.45%, 15.17% and 13.81% respectively. The original technological process of this site is: flotation copper separation → flotation zinc separation → magnetic separation of iron → flotation desulfurization → shaking table tin separation process. Sulfur removal, magnetic separation and iron removal, cassiterite classification for narrow-grain separation, coarse-grain re-flotation combination, fine-grain desliming, branch series flow carrier flotation an...

Embodiment 3

[0067] Embodiment 3: the beneficiation method of reclaiming cassiterite in a tin-containing polymetallic sulfide ore dressing plant in a certain place, the specific operations are as follows:

[0068] The original ore in this place is a polymetallic deposit mainly composed of copper, zinc, tin and iron. The ore composition is complex. The content of cassiterite is 0.42%, and the sulfur content is 6.9%. The gangue minerals are quartz, biotite, chlorite and potassium feldspar. Mainly, the contents are 19.17%, 16.58%, 14.39% and 12.73% respectively. The original technological process of this site is: flotation copper separation → flotation zinc separation → magnetic separation of iron → flotation desulfurization → shaking table tin separation process. Sulfur removal, magnetic separation and iron removal, cassiterite classification for narrow-grain separation, coarse-grain re-flotation combination, fine-grain desliming, branch series flow carrier flotation and re-election, a compl...

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Abstract

The invention discloses a method for recovering cassiterite from tin-containing sulphide ore. The method comprises the following steps that raw ore is ground, and tin is recovered by adopting the technological process of sulphide mineral differential flotation-machine column combined step-by-step sulfur removal-magnetic separation iron removal-cassiterite narrow fraction separation-coarse grain heavy flotation combination-fine grain desliming post-branch serial flow carrier flotation to obtain tin concentrate with the grade larger than 45%, and the recovery rate higher than 72%. According to the method, compared with a conventional desulfurization process, the machine column combined step-by-step desulfurization reduces the tin loss caused by entrainment of cassiterite while ensuring the thorough removal of pyrite, a combined pretreatment method of flotation desulfurization, magnetic separation iron removal, and swirler desliming is adopted so that the interference of sulphide ore andferromagnetic minerals on the subsequent cassiterite re-flotation process recovery can be effectively reduced; and after the fine-grained cassiterite is deslimed, a branch serial flow carrier flotation and reselection process is adopted, desulfurization and cassiterite flotation are both machine column combination, and the combined process achieves the index requirements for high grade and high recovery of full-grained cassiterite mineral separation, and reduces the mineral separation cost.

Description

technical field [0001] The invention relates to a method for recovering cassiterite from tin-containing sulfide ores, in particular to a cassiterite beneficiation method with uneven crystal thickness and high sulfur and mud content, and belongs to the technical field of beneficiation. Background technique [0002] Tin is an advantageous resource in my country, and its reserves rank first in the world. However, there are many co-associated components of tin ore in my country. The single-form tin ore accounts for only 12%, the tin ore as the main metal accounts for 66%, and the tin ore as the co-associated component accounts for 22%. With the continuous mining of rich ore, my country's cassiterite minerals have shown the characteristics of poor, fine, and miscellaneous. There are many associated minerals, complex components, and close symbiotic relationships, which makes it more difficult to recycle than foreign ones, and it is more difficult to develop and utilize. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/00
CPCB03B9/00
Inventor 童雄曹阳谢贤宋强张文杰杜云鹏程雅芝
Owner KUNMING UNIV OF SCI & TECH