Application of collecting agent in reverse floatation of bauxite

A collector and bauxite technology, applied in flotation, solid separation, etc., can solve problems such as constraints, and achieve the effects of small foam volume, good foam mineralization effect, and good selection ability
CN101844112AActive Publication Date: 2010-09-29CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2010-09-29

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Abstract

The invention relates to the application of a collecting agent in reverse floatation of bauxite. The application of quaternary phosphonium salt in the reverse floatation of the bauxite is developed in full accordance with the characteristics of low-grade bauxite and the strong electrostatic attraction of the quaternary phosphonium salt to silicate minerals, so selective collection of diasporite and kaolinite by using the collecting agent is realized. The agent has higher selecting capability and collecting performance than the conventional reverse floatation collecting agents such as primary amine, tertiary amine and quaternary ammonium, and has the advantages of small dosage, good index, environmental friendliness and the like. When the agent is used for treating the bauxite of which theratio of aluminum to silicon in raw ore is 5 to 5.5, the ratio of the aluminum to the silicon in obtained finished ore is more than 8 and the recovery rate of Al2O3 is more than 88 percent.
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Description

technical field

[0001] The invention belongs to the field of ore dressing, and relates to the application of a reverse flotation collector for bauxite, in particular to the application in the field of desiliconization of bauxite with a low aluminum-silicon ratio. Background technique

[0002] my country's bauxite has the characteristics of high aluminum, high silicon, and low aluminum-silicon ratio. Among the 255 mining areas in 7 provinces including Shanxi, Henan, Guangxi, Guizhou, Shandong, Sichuan and Yunnan, which account for 96% of my country's total bauxite reserves, the average grade (mass fraction) of bauxite is: Al 2 o 3 61.99%, SiO 2 10.4%, Fe 2 o 3 7.73%. The average aluminum-silicon ratio is 5.96, and the aluminum-silicon ratio of nearly half of the bauxite reserves is 4-6. The dissolution of diaspore requires high temperature, pressure and caustic ratio conditions; in addition, due to the low aluminum-silicon ratio of the ore, when this ore is used as a ra...

Claims

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