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Method for foam flotation and enrichment of low-grade boron-containing tailings

A foam flotation, low-grade technology, applied in flotation, solid separation, etc., can solve the problems of high cost, inconvenient on-site operation, etc.

Active Publication Date: 2016-11-09
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the flotation enrichment is carried out on the flotation machine, which is expensive for the rough flotation process, and it is inconvenient to operate on the spot

Method used

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  • Method for foam flotation and enrichment of low-grade boron-containing tailings
  • Method for foam flotation and enrichment of low-grade boron-containing tailings
  • Method for foam flotation and enrichment of low-grade boron-containing tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The particle size of 67.2g is 70 mesh, B 2 o 3 A low-grade boron-containing tailings powder in Dandong, Liaoning, with a mass percentage of 2.76% was added to the flotation device (see attached figure 1 ) in container a 2, add 300mL of water and stir well, adjust the pH of the pulp to 12 with sodium hydroxide and hydrochloric acid, add 0.1008g calcium lignosulfonate to the pulp and stir well, then add 0.0336g to the pulp Sodium oleate powder and fully stirred, and finally use an air compressor to feed air into the pulp through the air duct 1, the air flow rate is 40L / min, the ventilation time is 10min, the foam 3 is collected, and dried at 90°C for 4 hours to obtain the refined boron ore. The analysis results show that: B in the refined boron ore 2 o 3 The mass percentage reaches 7.79%.

Embodiment 2

[0048] The particle size of 67.2g is 85 mesh, B 2 o 3 A low-grade boron-containing tailings powder in Dandong, Liaoning with a mass percentage of 2.76% was added to container a 2 of the flotation device, 300mL of water was added and fully stirred, and the pH value of the pulp was adjusted to 10 with sodium hydroxide and hydrochloric acid, and the Add 0.1008g of calcium lignosulfonate to the pulp and stir thoroughly, then add 0.0470g of sodium oleate powder to the pulp and stir thoroughly, and finally use an air compressor to feed air into the pulp through air duct 1, and the air flow rate is 35L / min , the aeration time is 12min, the foam 3 is collected and dried at 80°C for 5 hours to obtain boron concentrate. The analysis results show that: B in the refined boron ore 2 o 3 The mass percentage reaches 6.63%.

Embodiment 3

[0050] The particle size of 67.2g is 93 mesh, B 2 o 3 A low-grade boron-containing tailings powder in Dandong, Liaoning with a mass percentage of 2.76% was added to container a 2 of the flotation device, 300mL of water was added and fully stirred, and the pH value of the pulp was adjusted to 10 with sodium hydroxide and hydrochloric acid, and the Add 0.0336g of calcium lignosulfonate to the pulp and stir well, then add 0.0336g of sodium oleate powder to the pulp and stir well, and finally use an air compressor to feed air into the pulp through air duct 1, and the air flow rate is 30L / min , the aeration time is 15 minutes, the foam 3 is collected and dried at 100° C. for 3 hours to obtain boron concentrate. The analysis results show that: B in the refined boron ore 2 o 3 The mass percentage reaches 7.16%.

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Abstract

The invention discloses a method for foam flotation and enrichment of low-grade boron-containing tailings and belongs to the technical field of beneficiation techniques of boron ore. The method comprises the technological steps of ore crushing, ore grinding, water adding for pulp conditioning, flotation, bubble scraping and drying. The technique is different from the flotation study by predecessors that flotation is conducted on a special flotation machine; and by the adoption of the technique, a simple flotation device can be made by a user according to the flotation principle, so that the flotation cost is greatly reduced, and the technological process is simple and efficient. After low-grade boron ore is subjected to flotation through the technique, the grade of diboron trioxide is increased to 140% or over, and a novel approach is provided for efficient utilization of boron ore resources with the grade decreased increasingly; and waste of boron resources is reduced, and the method is extremely suitable for rough flotation in site.

Description

technical field [0001] The invention belongs to the technical field of boron ore beneficiation technology, and relates to a boron-containing tailings enrichment process, in particular to a process method for enriching low-grade boron-containing tailings by foam flotation. Background technique [0002] my country's boron resource reserves are very considerable, with more than 50 proven boron ore spots, and the proven reserves rank fifth in the world. Boron resources are mainly distributed in Liaoning Province, Jilin Province, Qinghai Province and Tibet Autonomous Region. There are three ore belts formed in total: Liaoning East-Jilin South Sedimentary Metamorphic Boron Metallogenic Belt, Jiangsu Liuheyeshan-Guangxi Zhongshan Huangbao The skarn-type boron ore-forming belt and the Qinghai-Tibet Plateau salt lake boron ore-forming belt. The distribution of boron resources in my country is extremely uneven. The boron resource reserves in Liaoning Province account for 57.32% of th...

Claims

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Application Information

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IPC IPC(8): B03D1/016B03D1/02B03D101/02B03D103/04
CPCB03D1/016B03D1/023B03D1/025B03D2201/02B03D2203/04
Inventor 付喜林胡伟符寒光杨晓军雷永平魏世忠
Owner BEIJING UNIV OF TECH
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