Method for adding collecting agent in process of floating bauxite

A flotation process, bauxite technology, applied in flotation, solid separation and other directions, can solve the problems of mother liquor polluting the environment, unstable product content, inconvenient transportation and measurement of solid products, etc., to achieve strong collection performance, separation Good effect, reducing the effect of the synthesis process

Inactive Publication Date: 2011-07-13
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of production method has the problems of unstable product content, inconvenient transportation and measurement of solid products, and environmental pollution caused by the mother liquor produced by filtration.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Reaction raw materials: caustic soda, hydroxylamine hydrochloride, and esters are fed in a certain proportion, the reaction temperature is controlled at 10°C, and cooling water is used to cool down. After 6 hours of reaction, a white milky mixture is formed. The mixture is diluted with water, and the dilution ratio is 1:4. When collecting the agent, add it to the flotation process in the amount of 1000g / ton of raw ore.

[0014] Flotation test:

[0015] Raw ore Al-Si ratio 4.35, Al 2 o 3 Content 60.20%, SiO 2 The content is 13.83%, and the ore is ground for 5 minutes with a ball mill, and the fineness is -0.074mm, which accounts for 75%. In the laboratory, a small flotation machine is used for roughing and sweeping for flotation tests, and the prepared collector is pressed by Add 800g / ton of raw ore for roughing and 200g / ton of raw ore for sweeping.

[0016] Beneficiation indicators: tailings aluminum silicon ratio 1.23, Al 2 o 3 The recovery rate is 78%.

Embodiment 2

[0018] Reaction raw materials: caustic soda, hydroxylamine hydrochloride, and esters are fed in a certain proportion, the reaction temperature is controlled at 20°C, and cooling water is used to cool down. After 6 hours of reaction, a white milky mixture is formed. The mixture is diluted with water, and the dilution ratio is 1:4. When collecting the agent, add it to the flotation process in the amount of 900g / ton of raw ore.

[0019] Flotation test:

[0020] Raw ore Al-Si ratio 4.35, Al 2 o 3 Content 60.20%, SiO 2 The content is 13.83%, and the ore is ground for 5 minutes with a ball mill, and the fineness is -0.074mm, which accounts for 75%. In the laboratory, a small flotation machine is used for roughing and sweeping for flotation tests, and the prepared collector is pressed by Add 700g / ton of raw ore for roughing and 200g / ton of raw ore for sweeping.

[0021] Beneficiation indicators: tailings aluminum silicon ratio 1.26, Al 2 o 3 The recovery rate is 79.53%.

Embodiment 3

[0023] Reaction raw materials: caustic soda, hydroxylamine hydrochloride, and esters are fed in a certain proportion, the reaction temperature is controlled at 40°C, and cooling water is used to cool down. After 6 hours of reaction, a white milky mixture is formed. The mixture is diluted with water, and the dilution ratio is 1:4. When collecting the agent, add it to the flotation process in the amount of 800g / ton of raw ore.

[0024] Flotation test:

[0025] Raw ore Al-Si ratio 4.35, Al 2 o 3 Content 60.20%, SiO 2 The content is 13.83%, and the ore is ground for 5 minutes with a ball mill, and the fineness is -0.074mm, which accounts for 75%. In the laboratory, a small flotation machine is used for roughing and sweeping for flotation tests, and the prepared collector is pressed by Add 600g / ton of raw ore for roughing and 200g / ton of raw ore for sweeping.

[0026] Beneficiation indicators: tailings aluminum silicon ratio 1.34, Al 2 o 3 The recovery rate is 77.58%.

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PUM

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Abstract

The invention relates to a method for adding a collecting agent in a process of floating bauxite, in particular to a method for preparing and adding a KL collecting agent in a process of positively floating bauxite. The method is characterized by comprising the steps of: with a caustic soda solution, a hydroxylamine hydrochloride solution and methyl benzoate as raw materials, obtaining a mixed solution containing sodium hydroxamate, sodium chloride, methanol and water after carrying out hydroxyl-oximating reaction; and secondly, diluting the prepared mixed solution with water, adding the diluted mixed solution as the collecting agent into the bauxite for floatation. Due to the adoption of the invention, hydroxamate is synthesized through controlling the proper reaction temperature, the synthesized solution containing hydroxyoximate is directly used for preparing the collecting agent, and thus the crystallization separation process is eliminated. The collecting agent prepared from a sodium hydroxamate mixing solution produced by using the method has better application effect in the process of floating the bauxite, and has the advantages of strong collection property, less consumption, good separation effect and wide application prospect.

Description

technical field [0001] The invention relates to a method for adding a collector in the bauxite flotation process, and relates to a method for preparing and adding a KL collector used in the bauxite forward flotation. Background technique [0002] In the positive flotation process of bauxite, KL hydroxamate sodium benzyl hydroxamate is added as a collector. The production method of hydroxamate is to use hydroxylamine hydrochloride and caustic soda as raw materials, and use a refrigerator to control the reaction temperature Under the condition of 5-10°C, the reaction is carried out to generate sodium benzyl hydroxamate, and sulfuric acid is added in the later stage of the reaction to generate hydroxamic acid, which is crystallized by lowering the temperature and cooling, and the solid-liquid separation is realized by vacuum filtration. The separated benzhydroxamic acid is used as a collector and added to the flotation process of bauxite. This kind of production method has the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D103/02
Inventor 李培增郝红杰李庆刚李正东宋江红张延喜李建强杨磊陈晓静刘万城
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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