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A kind of collector for bauxite flotation and preparation method thereof

A collector and bauxite technology, applied in the field of metallurgy, can solve the problems of large dosage of flotation agents, high production cost, poor solubility, etc., achieve good selectivity and collection capacity, low surface tension, and easy defoaming Effect

Active Publication Date: 2018-06-15
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Positive flotation collectors are mainly fatty acids and their soaps, and their main disadvantages are poor solubility and often need to be heated before use. At the same time, the amount of flotation reagents is large and the production cost is high.

Method used

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  • A kind of collector for bauxite flotation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] at 2m 3 In the reaction kettle, add 50 parts by weight of oleic acid, add 10 parts by weight of Tween80 under the action of mechanical stirring, and after stirring at a high speed of 3000r / min for 10 minutes, slowly add caustic soda aqueous solution (prepared by 10 parts by weight of caustic soda and 25 parts by weight of water) ), after 3000r / min high-speed stirring for 10min, add 10 parts by weight of naphthenic acid, then dropwise add 10 parts by weight of ethylamine, and finally add 3 parts by weight of dimethicone, and stir at 3000r / min at 15°C for 30 minutes to obtain The yellow oily liquid is the collector and is marked as HLT-1.

Embodiment 2

[0021] at 2m 3 In the reactor, add 50 parts by weight of oleic acid, add 12 parts by weight of Triton X-100 under mechanical stirring, after stirring at a high speed of 3000r / min for 10min, slowly add caustic soda aqueous solution (10 parts by weight of caustic soda and 25 parts by weight of water After stirring at a high speed of 3000r / min for 10min, add 10 parts by weight of naphthenic acid, then dropwise add 12 parts by weight of n-propylamine, and finally add 3 parts by weight of dimethylpolysiloxane, and stir at a high speed of 3000r / min at 15°C After 20 minutes, a yellow oily liquid was obtained, which was the collector and was designated as HLT-2.

Embodiment 3

[0023] at 2m 3 In the reaction kettle, add 50 parts by weight of tall oil, add 15 parts by weight of Tween20 under the action of mechanical stirring, after stirring at a high speed of 3000r / min for 10min, slowly add caustic soda aqueous solution (prepared by 10 parts by weight of caustic soda and 25 parts by weight of water) into), after 3000r / min high-speed stirring for 10min, add 10 parts by weight of naphthenic acid, then dropwise add 15 parts by weight of n-propylamine, and finally add 3 parts by weight of dimethyl polysiloxane, stir at 3000r / min at 15°C for 30 minutes, Obtained yellow oily liquid, which is the collector, marked as HLT-3.

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Abstract

The invention discloses a collecting agent for bauxite floatation and a preparation method of the collecting agent. The collecting agent for bauxite floatation is prepared from the raw materials comprising aliphatic acid, aliphatic amine, naphthenic acid, dimethicone, emulsifier, caustic soda and water, wherein the weight ratio of the aliphatic acid to the aliphatic amine to the naphthenic acid to the dimethicone to the emulsifier to the caustic soda and to the water is 50:10-15:10:3:10-15:10:25. According to the collecting agent for bauxite floatation and the preparation method of the collecting agent, the emulsifier and the caustic soda are added stepwise, and the emulsification function and the saponification function on the aliphatic acid are achieved; and in this way, the defect that after saponification, conventional aliphatic acid is poor in mobility is relieved, the HLB number is improved, and meanwhile the good mobility of the aliphatic acid can be maintained. The collecting agent for bauxite floatation can be directly added in the bauxite floatation process or is prepared into a milky solution at the normal temperature to be used. Compared with a conventional collecting agent, the obtained collecting agent for bauxite floatation has the beneficial effects of being good in water solubility, resistant to low temperature, low in dosage, easy to defoam, good in selectivity and collecting capacity and the like.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a collector for bauxite flotation and a preparation method thereof. Background technique [0002] my country is rich in bauxite resources, but most of the ores are high-alumina, high-silicon, low-iron insoluble ores, and the ratio of aluminum to silicon is low. The impurity minerals in bauxite are mainly hematite, limonite, goethite, kaolinite, illite, opal, anatase, rutile, calcite, dolomite, pyrite, marcasite, etc. Silicon is a harmful element in bauxite. When the mineral is dissolved, it will form sodium aluminosilicate (sodium silicon slag) with aluminum, which not only causes the loss of aluminum, but also increases the alkali consumption. Therefore, the current research on bauxite flotation Mainly for desiliconization and impurity removal of bauxite. [0003] The aluminum-silicon ratio of bauxite after flotation desiliconization can be increased from about ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/018B03D1/004B03D1/008B03D1/01B03D101/02
CPCB03D1/0046B03D1/008B03D1/01B03D1/018B03D2201/02
Inventor 邓荣东胡元库建刚刘述忠马英强
Owner FUZHOU UNIV
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