Bauxite direct flotation collector

A collector and positive flotation technology, applied in flotation, solid separation, etc., can solve the problems of poor selectivity, weak collection capacity, etc., and achieve the effect of reduced dosage, sufficient mineral action, and fine foam

Inactive Publication Date: 2016-02-24
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the technical problem to be solved in the present invention is: to provide a positive flotation collector of bauxite, which can overcome the poor selectivity and fine particle collection abil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A bauxite mine in Chongzuo, Guangxi, Al in raw bauxite ore 2 o 3 The grade is 46.44%, SiO 2 The grade is 13.66%, and the aluminum-silicon ratio A / S is 3.40. Grind the ore until the bauxite with a particle size of less than 0.074mm accounts for about 80% of the mass percentage of the entire bauxite. Add sodium carbonate and sodium hexametaphosphate during the grinding, and then add positive flotation collectors into the stirring tank Stir and adjust the slurry, and then enter the flotation tank for flotation after the slurry is adjusted. The pulp undergoes two roughing operations, that is, the first roughing concentrate is subjected to another roughing operation, and the first roughing tailings are subjected to sweeping operations, and the sweeping tailings are the final tailings and sweeping concentrates in sequence Return to the first roughing slot. Carry out sweeping operations on the tailings of the second roughing, and the tailings of the sweeping are also the f...

Embodiment 2

[0016] A bauxite mine in Zibo, Shandong, Al in raw bauxite ore 2 o 3 The grade is 47.12%, SiO 2 The grade is 13.90%, and the aluminum-silicon ratio A / S is 3.39. Grind the ore until the bauxite with a particle size of less than 0.074mm accounts for about 85% of the mass percentage of the entire bauxite, add sodium carbonate and sodium silicate during the grinding, and then add a mixed collector in the stirring tank for stirring Slurry adjustment, after slurry adjustment, enter the flotation tank for flotation. The ore pulp undergoes one roughing, two sweeping and four finishing operations, and the medium ore returns to the previous operation in sequence.

[0017] The composition and mass ratio of the positive flotation collector used are: PEG-400: oleic acid collector: octyl hydroxamic acid collector: kerosene: water 1:2:15:15:67, ultrasonic emission The frequency is 30kHz, and the ultrasonic emulsification time is 50min. The amount of collector is 600~800g / ton of raw ore,...

Embodiment 3

[0020] A bauxite mine in Pingguo, Guangxi, Al in raw bauxite ore 2 o 3 The grade is 43.67%, SiO 2 The grade is 13.15%, and the aluminum-silicon ratio A / S is 3.32. Grind the ore until the bauxite with a particle size of less than 0.074mm accounts for about 75% of the mass percentage of the entire bauxite. Add sodium carbonate and sodium pyrophosphate during the grinding, and then add positive flotation collectors in the stirring tank for Stir to adjust the slurry, and then enter the flotation tank for flotation after the slurry is adjusted. The pulp undergoes two roughing operations, that is, the first roughing concentrate is subjected to another roughing operation, and the first roughing tailings are subjected to sweeping operations, and the sweeping tailings are the final tailings and sweeping concentrates in sequence Return to the first roughing slot. Carry out sweeping operations on the tailings of the second roughing, and the tailings are also the final tailings, and t...

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PUM

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Abstract

The invention relates to a bauxite direct flotation collector which is prepared by performing ultrasonic emulsification on an emulsifier, an oleic acid collector, an octyl hydroximic acid collector and kerosene. During the preparation, the mass ratio of the emulsifier, the oleic acid collector, the octyl hydroximic acid collector, kerosene and water is 1:(2-5):(10-15):(10-15):(64-77); the ultrasonic transmitting frequency is 25-30 kHz; and the ultrasonic emulsification period is 30-60 min. The bauxite direct flotation collector is suitable for diasporic bauxite of which the alumina-silica ratio is 3.3-3.4; the bauxite direct flotation collector has high stability, that is, the bauxite direct flotation collector can stably exist in the form of an emulsion for 60 min; basically, emulsion drops d50 are not changed after water is added, and the bauxite direct flotation collector can stably play a role within the ore pulp flotation period; the bauxite direct flotation collector is high in dispersive capacity and sufficiently acts with a mineral, so that flotation indices are obviously improved; and the foamability is high, and foam consists of small and uniform bubbles, so that the consumption of a foaming agent can be lowered and the reagent cost can be reduced.

Description

technical field [0001] The invention relates to the field of bauxite beneficiation, in particular to a positive flotation collector for bauxite. Background technique [0002] my country's bauxite is mainly of the diaspore type, which has the characteristics of a low aluminum-silicon ratio, and the general aluminum-silicon ratio is about 4. At present, alumina production generally adopts the beneficiation-Bayer process, that is, the silicon-containing minerals in bauxite are removed in advance through traditional methods, and bauxite concentrate is produced to increase the aluminum-silicon ratio of bauxite resources, and then use advanced , Economic Bayer process to produce alumina. Bauxite beneficiation adopts positive flotation desiliconization process, the collector is mainly anionic surfactant, commonly used agents include: oleic acid, tall oil, neutral oil, sodium dodecylbenzenesulfonate, dodecylbenzene Alkyl sodium sulfate, oxidized paraffin soap, 731, 733, styrene ph...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D101/02B03D103/04
CPCB03D1/018B03D2201/02B03D2203/04
Inventor 刘三军姚文明邹松岳琦覃文庆王军刘维张雁生焦芬
Owner CENT SOUTH UNIV
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