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Defoaming agent of bauxite flotation froth

A technology of defoaming agent and bauxite, which is applied in the direction of foam dispersion/prevention, etc. It can solve the problems of the total concentrate tank leaking, unstable production, low efficiency, etc., and achieves controllable half-life, shortened half-life, and less dosage Effect

Inactive Publication Date: 2012-06-13
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The foam is difficult to eliminate, so that the total concentrate transport pump often forms "cavitation", the efficiency is low, and the total concentrate tank leaks, resulting in unstable production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Under the grinding fineness of 88%, the pH is 9.5, the dosage of sodium hexametaphosphate is 60 g / ton of raw ore, and the dosage of collector is 1000 g / ton of raw ore. Bauxite positive flotation concentrate froth. Mix positive flotation concentrate foam with defoamer, defoamer composition is C 7 h 15 O(EO) 200 (PO) 300 C 9 h 19 : Polyfatty acid amide: aromatic hydrocarbon oil = 1: 0.6: 1.3, wherein the composition of polyfatty acid amide is polyethylenediamine adipamide: polyethylenediamine sebacic acid amide = 3:4, and the amount of defoamer added is 5g / t-raw ore, the stirring speed is 500r / min, which can shorten the half-life of foam from 20.5min to 5.5min.

Embodiment 2

[0022] Under the grinding fineness of 88%, the pH is 9.5, the dosage of sodium hexametaphosphate is 60 g / ton of raw ore, and the dosage of collector is 1000 g / ton of raw ore. Bauxite positive flotation concentrate froth. Mix positive flotation concentrate foam with defoamer, defoamer composition is C 6 h 5 O(EO) 100 (PO) 200 H: polyfatty acid amide: aromatic hydrocarbon oil = 1.4: 0.9: 3.1, the composition of polyfatty acid amide is polyethylenediamine adipamide: polyethylenediamine sebacic acid amide = 1: 1.5, the amount of defoamer added It is 300g / t-raw ore, and the stirring speed is 250r / min, which can shorten the foam half-life from 40min to 4.5min.

Embodiment 3

[0024] Under the grinding fineness of 88%, the pH is 9.5, the dosage of sodium hexametaphosphate is 60 g / ton of raw ore, and the dosage of collector is 1000 g / ton of raw ore. Bauxite positive flotation concentrate froth. Mix positive flotation concentrate foam with defoamer, the composition of defoamer is HO(EO) 1 (PO) 1 C 15 h 31 : polyfatty acid amide: aromatic hydrocarbon oil = 1.2: 0.7: 2, the composition of polyfatty acid amide is polyethylenediamine adipamide: polyethylenediamine sebacic acid amide = 1: 2, the amount of defoamer added is 50g / t-raw ore, the stirring speed is 750r / min, which can shorten the half-life of foam from 2min to 1.08min.

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PUM

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Abstract

A defoaming agent of bauxite flotation froth relates to a defoaming agent used for eliminating the concentrate froth generated in the bauxite positive flotation desilication process. The defoaming agent is characterized in that the defoaming agent is a mixture of polyether, poly(fatty acid amide) and hydrocarbon oil. By adopting the defoaming agent, the half-life of froth can be effectively shortened; the dosage is low, the half-life of froth is controllable; and as the half-life of froth can be adjusted in a wide range, the defoaming agent influences the subsequent technology less and the application range of the defoaming agent can be widened.

Description

technical field [0001] The invention relates to a defoamer for bauxite flotation foam, which relates to a defoamer for eliminating concentrate foam produced in the process of bauxite positive flotation desiliconization. technical background [0002] Foam flotation is a complex physical and chemical process completed in a gas-solid-liquid three-phase system. According to the differences in the surface properties of various materials, using foam, hydrophobic minerals adhere to the bubbles, and hydrophilic minerals remain in the water. In this way, the useful components in the ore are separated from the gangue minerals. [0003] Bauxite positive flotation desiliconization is an effective way to improve the quality of ore. The process technology is relatively mature. At present, it has realized industrialization and achieved good results. During the flotation separation process, the useful mineral diaspore is enriched on the foam. Due to the characteristics of the ore component...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/04
Inventor 严育红池清泉喻东王树祥白璐
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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