Method for separating fine cassiterite

A beneficiation method and fine-grained technology are applied in the field of beneficiation of fine-grained cassiterite, which can solve the problems of low separation efficiency of fine-grained cassiterite, large consumption of flotation reagents, and high production cost, and achieves low cost and recovery of cassiterite. The effect of high rate and low consumption

Active Publication Date: 2012-06-13
西乌珠穆沁旗银漫矿业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is a single flotation method. Although it can obtain high-grade concentrate products, it also has the problems of large consumption of flotation agents and high production costs.
[0008] In summary, due to the low efficiency of re-election for fine-grained ca

Method used

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  • Method for separating fine cassiterite
  • Method for separating fine cassiterite

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Cassiterite ore from a place in Yunnan, China is selected. The main mineral composition is cassiterite, pyrrhotite, sphalerite, magnetite, hornblende, biotite, quartz, pyroxene and calcite. The ore tin grade is 0.98%. Grind the raw ore to -0.074mm to account for 82%, add water to adjust the slurry to a concentration of 30%, and add 1000 grams of copper sulfate to adjust the slurry, 150 grams of butyl xanthate and 80 grams of foaming agent in sequence for each ton of raw ore No. 2 oil, carry out sulfide ore flotation to obtain flotation sulfide ore concentrate and flotation sulfide ore tailings, wherein the flotation sulfide ore concentrate contains 0.35% tin, and the tin recovery rate is 10.01%; flotation sulfide ore tailings Under the condition that the background magnetic field strength is 0.1T, magnetic separation is carried out to obtain magnetic separation concentrate and magnetic separation tailings, wherein the magnetic separation concentrate contains 0.25% tin, ...

Embodiment 2

[0027]The raw ore is the same as in Example 1, and the tin grade of the raw ore is 0.96%. Grind the raw ore to -0.074mm to account for 85%, add water to adjust the slurry to a concentration of 30%, and add 1500 grams of copper sulfate to adjust the slurry, 150 grams of butyl xanthate and 100 grams of foaming agent in sequence for each ton of raw ore No. 2 oil, carry out sulfide ore flotation to obtain flotation sulfide ore concentrate and flotation sulfide ore tailings, wherein the flotation sulfide ore concentrate contains 0.31% tin, and the tin recovery rate is 8.38%; flotation sulfide ore tailings Under the condition that the background magnetic field strength is 0.1T, magnetic separation is carried out to obtain magnetic separation concentrate and magnetic separation tailings, wherein the magnetic separation concentrate contains 0.22% tin, and the tin recovery rate is 2.06%; the classification of magnetic separation tailings is + Two particle sizes of 0.043mm and -0.043mm;...

Embodiment 3

[0029] The raw ore is the same as in Example 1, and the tin grade of the raw ore is 1.08%. Grind the raw ore to -0.074mm to account for 86%, add water to adjust the slurry to a concentration of 29%, and add 2000 grams of copper sulfate to adjust the slurry, 200 grams of butyl xanthate and 100 grams of foaming agent in sequence for each ton of raw ore No. 2 oil, carry out sulfide ore flotation to obtain flotation sulfide ore concentrate and flotation sulfide ore tailings, wherein the flotation sulfide ore concentrate contains 0.36% tin, and the tin recovery rate is 9.99%; flotation sulfide ore tailings Under the condition that the background magnetic field strength is 0.1T, magnetic separation is carried out to obtain magnetic separation concentrate and magnetic separation tailings, wherein the magnetic separation concentrate contains 0.30% tin, and the tin recovery rate is 2.22%; the magnetic separation tailings are graded as + Two particle sizes of 0.043mm and -0.043mm; +0.04...

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Abstract

The invention relates to a method for separating fine cassiterite, which is characterized by comprising the following steps of: grinding a raw ore, performing size mixing, and performing flotation on a sulfide ore; performing magnetic separation on tailings of the sulfide ore subjected to flotation, and grading the tailings subjected to magnetic separation into particles of +0.043mm and particlesof -0.043mm; performing gravity separation on the particles of +0.043mm by using a spiral chute and a shaker to obtain a shaker cassiterite concentrate; desliming the particles of -0.043mm by using acyclone to obtain cyclone settled sand; performing size mixing, primary flotation roughing, primary flotation scavenging and primary flotation cleaning on the cyclone settled sand to obtain a flotation coarse concentrate; performing gravity separation on the flotation coarse concentrate by using a centrifugal ore separator to obtain a centrifugal gravity separation cassiterite concentrate; and mixing the shaker cassiterite concentrate and the centrifugal gravity separation cassiterite concentrate to obtain a total cassiterite concentrate. Roughing is performed by the spiral chute, so that theprocessing capacity in a unit area is greatly improved, the occupied area is saved, and separation efficiency is high; and flotation roughing and gravity separation cleaning are combined, so that theconsumption of a flotation agent is low, cost is low, the ore separation enrichment ratio is 5 to 10, and the recovery rate of the cassiterite is high.

Description

technical field [0001] The invention relates to an ore dressing method, in particular to an ore dressing method for fine-grained cassiterite. Background technique [0002] Due to its special physical properties such as brittleness and fragility, cassiterite is easily muddied or over-crushed in the process of ore crushing and grinding, resulting in a large amount of secondary slime. In particular, fine-grained cassiterite, which is densely symbiotic with sulfide ore or iron minerals, or wrapped by gangue minerals. If the effective monomer dissociation of cassiterite minerals is realized, the ore needs to be finely ground, so that secondary slime will inevitably be produced, so fine-grained cassiterite is difficult to separate. At present, about 80% of the tin lost in my country every year is in the form of fine mud and lost to the tailings. [0003] Tin ore beneficiation methods are mainly gravity separation and flotation. Due to the large specificity of cassiterite and th...

Claims

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Application Information

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IPC IPC(8): B03B7/00
Inventor 邱显扬胡真李汉文汤玉和何庆浪叶富兴童雄王成行汪泰陈志强邹坚坚
Owner 西乌珠穆沁旗银漫矿业有限责任公司
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