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Flotation method of fine grained diaspore

A micro-particle, water-hardening technology, applied in flotation, solid separation, etc., can solve the problems of low flotation efficiency and large flotation dosage, and achieve the goal of improving flotation efficiency, promoting collection, and promoting hydrophobic agglomeration Effect

Active Publication Date: 2019-07-05
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to provide a kind of flotation method of fine grained diaspore, to solve the defects of large flotation dosage and low flotation efficiency in the fine grained diaspore flotation process

Method used

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  • Flotation method of fine grained diaspore
  • Flotation method of fine grained diaspore
  • Flotation method of fine grained diaspore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Pre-prepared at a concentration of 5 x 10 -5 M sodium oleate solution 950ml, and use sodium hydroxide to adjust the pH of the solution to 9.9-10.1, then add 50g of fine-grained diaspore mineral, and use a stirrer to stir for 3 minutes to obtain primary pulp. Open the water stop valve 2, and transfer the primary pulp to the pulp storage 7.

[0027] Open the water stop valve 2 between the slurry storage 7 and the peristaltic pump 3, start the peristaltic pump 3 to send the primary slurry from the slurry storage 7 to the cavitation pipe 5, and adjust the speed of the peristaltic pump 3 to 300rpm. At this time, the liquid flowmeter 4 The flow velocity shown is 0.9m / s, the jet velocity of the jet shrinkage chamber 5-1 of the cavitation pipe is 13.5m / s, the cavitation effect is weak, and the amount of micro-nano bubbles is not much, and the pulp returns to the pulp storage 7 through the cavitation pipe Afterwards, the next round of circulation is started, and after the cavit...

Embodiment 2

[0034] Pre-prepared at a concentration of 5 x 10 -5 M sodium oleate solution 950ml, and use sodium hydroxide to adjust the pH of the solution to 9.9-10.1, then add 50g of fine-grained diaspore mineral, and use a stirrer to stir for 3 minutes to obtain primary pulp. Open the water stop valve 2 and transfer the primary pulp to the pulp storage.

[0035]Open the water stop valve 2 between the slurry storage 7 and the peristaltic pump 3, start the peristaltic pump 3 to send the primary slurry from the slurry storage 7 to the cavitation pipe 5, and adjust the speed of the peristaltic pump 3 to 450rpm. At this time, the liquid flowmeter 4 The flow velocity shown is 1.4m / s, the jet flow velocity of the jet shrinkage cavity 5-1 of the cavitation pipe is 18.3m / s, the cavitation effect is strong, and micro-nano bubbles are generated, and the pulp returns to the pulp storage 7 through the cavitation pipe 5 and starts In the next round of circulation, after the cavitation reaction is con...

Embodiment 3

[0041] Pre-prepared at a concentration of 1 x 10 -4 M sodium oleate solution 950ml, and use sodium hydroxide to adjust the pH of the solution to 9.9-10.1, then add 50g of fine-grained diaspore mineral, and use a stirrer to stir for 3 minutes to obtain primary pulp. Open the water stop valve 2, and transfer the primary pulp to the pulp storage 7.

[0042] Open the water stop valve 2 between the slurry storage 7 and the peristaltic pump 3, start the peristaltic pump 3 to send the primary slurry from the slurry storage 7 to the cavitation pipe 5, and adjust the speed of the peristaltic pump 3 to 450rpm. At this time, the liquid flowmeter 4 The flow velocity shown is 1.4m / s, the jet flow velocity of the jet shrinkage cavity 5-1 of the cavitation pipe is 18.3m / s, the cavitation effect is strong, and micro-nano bubbles are generated, and the pulp returns to the pulp storage 7 through the cavitation pipe 5 and starts In the next cycle, after the cavitation reaction is continued for ...

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Abstract

The invention discloses a flotation method of fine-grained diaspore. The method comprises the following steps that 1 ) water, a pH regulator and a collecting agent are added into a fine-grained diaspore mineral in sequence, and stirring and size mixing are performed to obtain a primary ore pulp; 2 ) the primary ore pulp is transferred into a jet flow circulation cavitation system for cavitation treatment to obtain a flotation ore pulp; and 3 ) the flotation ore pulp is guided into a flotation machine for flotation, and a diaspore foam product is obtained. According to the method, the jet flowcavitation is adopted for processing the fine-grained bauxite ore pulp; the high-speed jet flow formed during the jet cavitation treatment enables a target mineral to remove the cover of ore mud, andthe direct action of a flotation chemical and mineral particles is promoted; the jet flow cavitation treatment enables the surface of a hydrophobic mineral to directly generate nano bubbles, and bulk-phase micro-nano gas bubbles are generated in a ore pulp solution, the hydrophobic agglomeration among the micro-fine-particle particles is promoted; and meanwhile, the collection of the mineral particles by the flotation bubbles is further promoted, so that the flotation efficiency of the fine-grain diaspore is improved.

Description

technical field [0001] The invention belongs to the field of mineral processing, and in particular relates to a method for flotation of fine-grained diaspore. Background technique [0002] The flotation recovery of fine-grained minerals is a major scientific problem in the field of modern mineral processing. With the large-scale mining and application of mineral resources, the proportion of lean, fine and miscellaneous ores is increasing, and the research on fine-grain flotation technology has attracted more and more attention. The fine-grained minerals have small mass and low momentum, which leads to a small probability of collision and adhesion with air bubbles, which makes the flotation rate and recovery rate low, and reduces the concentrate grade due to fine-grained mixing; at the same time, the fine-grained minerals have a large specific surface area , the serious non-selective adsorption of the agent leads to a large consumption of the agent and a decrease in the grad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/02B03D1/002B03B1/00B03D103/02B03D101/02
CPCB03B1/00B03D1/002B03D1/025B03D2201/007B03D2201/02B03D2203/02
Inventor 欧乐明周伟光冯其明卢毅屏张国范石晴
Owner CENT SOUTH UNIV
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