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Bauxite column-type floatation method

A bauxite and column-type technology, which is applied in the field of beneficiation and desiliconization of low-grade diaspore bauxite, can solve the problems of difficult control, small processing capacity, and poor beneficiation index, and achieve reasonable process and strengthened Recycling and ensuring the effect of tailings grade

Active Publication Date: 2013-05-08
中铝中州铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this bauxite separation process is simple, in the actual large-scale industrial application, especially in the industrial production of low-grade bauxite, it has exposed the shortcomings of small processing capacity, large amount of chemicals, and poor beneficiation indicators. , especially the process is very difficult to control the tailings grade, and the A / S of tailings is higher than 2.0, which directly leads to a significant reduction in the recovery rate of bauxite flotation, which greatly affects the flotation of bauxite. The effect of silicon

Method used

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  • Bauxite column-type floatation method
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Bauxite raw ore pulp A / S 3.0, grinding fineness 92%, PH 10.0, weight concentration 40%, regulator in the flotation process is water glass, collector is oxidized paraffin wax soap, tall oil at a ratio of 3:1 Proportional mix. When adding flotation reagents to the pulp of bauxite raw ore, the amount of regulator added is 120 g / ton of raw ore, and the amount of collector added is 1100 g / ton of raw ore. The flotation concentrate slurry overflowed from the rougher flotation column is added to the flotation agent for slurry adjustment. The amount of regulator added is 100 g / ton of raw ore, and the amount of collector added is 100 g / ton of raw ore. The tailings of the bottom flow of the coarse flotation flotation column are added with flotation reagents to adjust the slurry. The amount of regulator added is 40 g / ton of raw ore, and the amount of collector added is 100 g / ton of raw ore.

Embodiment 2

[0033] The bauxite raw ore pulp is A / S 4.0, the grinding fineness is 75%, the pH is 9.5, and the weight concentration is 20%. The regulator of the flotation process is polyphosphate, and the collector is fatty acid soap. When adding flotation agents to the pulp of bauxite raw ore, the amount of regulator added is 50 g / ton of raw ore, and the amount of collector added is 700 g / ton of raw ore. The flotation concentrate slurry overflowed from the rougher flotation column is then added to the flotation agent during the slurry adjustment process. The addition amount of the regulator is 0, and the addition amount of the collector is 50 g / ton of raw ore. The tailings of the rough flotation flotation column bottom flow are added with flotation reagents to adjust the slurry. The amount of regulator added is 10 g / ton of raw ore, and the amount of collector added is 50 g / ton of raw ore.

Embodiment 3

[0035] The bauxite raw ore pulp is A / S 5.0, the grinding fineness is 70%, the pH is 9.0, and the weight concentration is 30%. The regulator of the flotation process is polyphosphate, and the collector is modified fatty acid. When adding flotation agents to the pulp of bauxite raw ore, the amount of regulator added is 10 g / ton of raw ore, and the amount of collector added is 200 g / ton of raw ore. The flotation concentrate slurry overflowed from the rougher flotation column is added to the flotation agent for slurry adjustment. The amount of regulator added is 10 g / ton of raw ore, and the amount of collector added is 200 g / ton of raw ore. The tailings of the bottom flow of the rough flotation flotation column are added with flotation reagents during the slurry adjustment process. The additive amount of the regulator is 0, and the additive amount of the collector is 200 g / ton of raw ore.

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Abstract

The invention provides a bauxite column-type floatation method, and relates to bauxite ore-dressing and desilication, in particular to a low-grade diasporite bauxite ore-dressing and desilication method. The method is characterized in that a floatation process comprises the following steps: (1) adding flotation reagent for pulp regulation to bauxite raw ore pulp and adopting a flotation column for rough flotation; (2) adding the flotation reagent for pulp regulation again to flotation concentrate pulp overflowing from the flotation column for rough flotation, adopting the flotation column forconcentration and obtaining concentrate; (3) adding the flotation reagent for pulp regulation to tailings flowing at the bottom of the flotation column for rough flotation to perform column scavenging; and (4) returning the tailings obtained by adopting the flotation column for concentration in the step (2) and scavenging concentrate obtained in the step (3) to the process of adding the flotationreagent for pulp regulation to the bauxite raw ore pulp in the step (1). The method has the advantages of reasonable process, good industrial implementation effects, good flotation indexes and low reagent consumption.

Description

technical field [0001] A bauxite column type flotation method relates to a bauxite ore dressing and desiliconization method, especially a method for ore dressing and desiliconization of low-grade diaspore bauxite. Background technique [0002] Most of the bauxite in my country belongs to the diaspore type bauxite, which has the characteristics of high aluminum, high silicon, low iron, and low aluminum-silicon ratio. The gangue minerals are mainly kaolinite, illite, pyrophyllite, etc. Aluminosilicate clay minerals. The mosaic distribution of main minerals in the ore is fine, and the mosaic relationship is complex. The crushing and grinding process of gangue minerals is easy to muddy and difficult to wash. [0003] After years of hard work, Chinese scientific and technological workers have developed a number of bauxite beneficiation processes. At present, large-scale industrial production of bauxite flotation has been realized. Industrial production usually uses flotation mac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00B03D1/008B03B1/04B03D103/04B03D101/02
Inventor 刘伟刘炯天赵东峰周长春王二星曹亦俊刘焦萍陆维和王永田董增芬宋江红黄春成李太昌李振东程旭
Owner 中铝中州铝业有限公司
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