Separation method of associated rich fluorite and low-grade cassiterite in tungsten flotation tailings

A separation method and technology of tungsten tailings, which are applied in the field of separation of associated rich fluorite and low-grade cassiterite, can solve the problems of unfavorable recovery rate of fluorite and cassiterite, loss of fluorite and cassiterite, high operating cost, etc., and achieve It is beneficial to the comprehensive recycling rate, reducing losses and reducing investment

Active Publication Date: 2016-02-17
YUNNAN TIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, concentration and drug removal requires investment in concentration equipment and auxiliary facilities, which require large investment and high operating costs. At the same time, due to the large amount...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Add GY-4 fluorite collector 400g / t according to the weight of the ore, and stir for 5 minutes, at an air pressure of 3kg / cm 2 Under the operating parameters of the flotation column, the gas volume is 5L / min, the liquid level is 10%, and the ore feed rate is 400ml / min, fluorite and calcite are removed by flotation, and fluorite coarse concentrate and anti-enrichment tin-containing tailings are obtained. Afterwards, use flotation machine to select the fluorite coarse concentrate for five times, according to the amount of ore per ton, add 8000g / t of acidified water glass for the first selection, and stir for 3 minutes; add 6000g / t of acidified water glass for the second selection , stirred for 3 minutes; added acidified water glass 6000g / t for three times, stirred for 3 minutes; added acidified water glass 4000g / t for four times, stirred for 3 minutes; added acidified water glass for five times, stirred for 3 minutes Minutes to get fluorspar concentrate products...

Embodiment 2

[0026] According to the weight of the ore, add acidified water glass 1000g / t, stir for 4 minutes, GY-4 fluorite collector 600g / t, stir for 6 minutes, at an air pressure of 3.5kg / cm 2 Under the operating parameters of the flotation column, gas volume 4L / min, liquid level 30%, ore feed rate 300ml / min, fluorite and calcite are removed by flotation, and fluorite coarse concentrate and anti-enrichment tin-containing tailings are obtained. Afterwards, use flotation machine to select the fluorite coarse concentrate for five times, and add acidified water glass 4000g / t in the first selection, and add acidified water glass for 5 minutes; add acidified water glass 4000g / t in the second selection , stirred for 4 minutes; added acidified water glass 3000g / t for three times, and stirred for 2 minutes; added acidified water glass for four times, and stirred for 2 minutes; added acidified water glass for five times, and stirred for 4 minutes Minutes to get fluorspar concentrate products and ...

Embodiment 3

[0028] According to the weight of the ore, add acidified water glass 2000g / t, stir for 2 to 3 minutes, GY-4 fluorite collector 800g / t, stir for 3 minutes, at an air pressure of 2.5kg / cm 2Under the operating parameters of the flotation column, the gas volume is 3L / min, the liquid level is 40%, and the ore feed rate is 350ml / min, fluorite and calcite are removed by flotation, and fluorite coarse concentrate and anti-enrichment tin-containing tailings are obtained. Afterwards, the fluorite coarse concentrate is selected by flotation machine for five times, and according to the amount of ore per ton, 6000g / t of acidified water glass is added to the first selection, and stirred for 6 minutes; the second selection is added to 2000g / t of acidified water glass , stirred for 2 minutes; added acidified water glass 2000g / t for three times, and stirred for 4 minutes; added acidified water glass for four times, and stirred for 4 minutes; added acidified water glass for five times, and stirr...

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PUM

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Abstract

The invention discloses a separation method of associated rich fluorite and low-grade cassiterite in tungsten flotation tailings. The separation method comprises the steps of directly feeding tungsten flotation tailings containing 16-25% of fluorite CaF2 and 0.1-0.3% of tin SnO2 into a flotation column for rough fluorite flotation, and separating fluorite from calcite and iron-containing pyroxene, so as to obtain rough fluorite concentrate and tin-containing tailings subjected to derichment; carrying out precise flotation on the rough fluorite concentrate for five times, so as to obtain a fluorite concentrate product and fluorite flotation tailings; and carrying out two-stage sorting on the tin-containing tailings subjected to derichment, and carrying out a concentrated back washing shaking table gravity separation technology on secondary concentrate, so as to obtain a rough tin concentrate product and tin flotation tailings. According to the separation method, the technological process is simple, the loss of fluorite and cassiterite in overflow water can be reduced, and the comprehensive recycling rate of fluorite and cassiterite is increased.

Description

technical field [0001] The invention relates to the technical field of beneficiation methods, in particular to a method for separating associated fluorite-rich and low-grade cassiterite in tungsten beneficiation tailings. Background technique [0002] The existing technology only separates relatively simple fluorspar or cassiterite, and its beneficiation process is relatively mature. The fluorite adopts the method of full flotation; the cassiterite adopts the method of gravity separation and flotation, and the process is simple and effective. When cassiterite is separated and sorted, the flotation method has high efficiency, but the cost of flotation reagents is high, and the widely used method at this stage is the ancient gravity separation method. For tungsten beneficiation tailings containing fluorite, calcite, pyroxene, cassiterite and other minerals, the recovery of fluorite and cassiterite usually adopts the method of flotation machine-shaking table combined separation...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/008
Inventor 李燕华袁经中姚建伟杨永林赵荣陈明波熊明金李密密孙斌石丽芬
Owner YUNNAN TIN
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