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Flotation method based on active oily bubbles

A technology of oil quality and air bubbles, applied in flotation, solid separation, etc., can solve the problems of low flotation efficiency, large amount of collector, low solubility, etc., and achieve the effect of improving flotation recovery rate

Inactive Publication Date: 2017-09-15
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low solubility and poor dispersion of hydrocarbon oil collectors in water, high temperature or heating flotation is required, so the amount of collectors used in flotation is relatively large, and the dispersion in hydrocarbon oil pulp is poor. Collectors and various substances in pulp A synergistic effect is produced, resulting in lower flotation efficiency and higher flotation costs
The flotation of valuable minerals with poor hydrophobicity is relatively uneconomical or not feasible for flotation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A method for intensifying the flotation process based on active oily bubbles, for apatite intensified flotation with active oily bubbles, P in apatite 2 o 5 46.06%, CaO 48.18%, SiO 2 1.36%, Fe 2 o 3 0.12%. Its flotation process includes the following steps:

[0055] 1) Prepare fatty acid kerosene solution I (concentration of fatty acid is 110ppm), used to prepare active oily bubbles;

[0056] 2) the fatty acid kerosene solution I in step 1) is added in the storage tank of making active oily bubbles in the flotation column;

[0057] 3) Grinding and sieving the apatite, and taking 6 g of the grinding product with a grinding fineness of -200# accounting for 80-100%;

[0058] 4) Mix the grinding product in step 1) with 800 mL of water, stir evenly, adjust the pH of the mixed solution I to 6 with HCl solution and NaOH solution, and obtain the mixed solution II;

[0059] 5) Pour the mixed liquid II into the flotation column (the volume ratio of kerosene to the mixed l...

Embodiment 2

[0063] An intensified method of flotation process based on active oily bubbles, for dolomite, MgO 46.06%, CaO 60.27%, SiO 2 0.68%, Fe 2 o 3 0.91%. Its flotation process includes the following steps:

[0064] 1) Prepare fatty acid kerosene solution I (concentration of fatty acid is 110ppm), used to prepare active oily bubbles;

[0065] 2) the fatty acid kerosene solution I in step 1) is added in the storage tank of making active oily bubbles in the flotation column;

[0066] 3) Grinding and sieving the dolomite, and taking 6 g of the grinding product with a grinding fineness of -200# accounting for 80-100%;

[0067] 4) Mix the grinding product in step 1) with 800 mL of water, stir evenly, adjust the pH of the mixed solution I to 6 with HCl solution and NaOH solution, and obtain the mixed solution II;

[0068] 5) Pour the mixed liquid II into the flotation column (the volume ratio of kerosene to the mixed liquid II in the storage tank at the bottom of the flotation column i...

Embodiment 3

[0072] A flotation process intensification method based on active oily bubbles, for bastnaesite intensified flotation with active oily bubbles, in bastnaesite La29.44%, Ce38.64%, Pd6.94%, Ba13. 27%, Fe3.11%. Its flotation process includes the following steps:

[0073] 1) Prepare fatty acid kerosene solution I (concentration of fatty acid is 110ppm), used to prepare active oily bubbles;

[0074] 2) the fatty acid kerosene solution I in step 1) is added in the storage tank of making active oily bubbles in the flotation column;

[0075] 3) Grinding and sieving the bastnaesite, and taking 6 g of the grinding product with a grinding fineness of -200# accounting for 80-100%;

[0076] 4) Mix the grinding product in step 1) with 800 mL of water, stir evenly, adjust the pH of the mixed solution I to 6 with HCl solution and NaOH solution, and obtain the mixed solution II;

[0077] 5) Pour the mixed liquid II into the flotation column (the volume ratio of kerosene to the mixed liquid ...

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Abstract

The invention relates to a flotation method based on active oily bubbles. Kerosene and an oil soluble collecting agent are mixed to be used for preparing the active oily bubbles, and the prepared active oily bubbles replace traditional bubbles to serve as mineral particle flotation carriers and are applied to mineral flotation and separation. By adopting the flotation method based on the active oily bubbles, the problems that hydrocarbon oil collecting agents are poor in dispersibility, large in using amount, low in recovery rate and poor in selectivity and needs auxiliary heating in the flotation process can be solved, the recovery rate of primary flotation reaches 60-80%, and the flotation recovery rate is increased by 1.1-4.5 times compared with common bubble flotation under the same condition.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and relates to a flotation method based on active oil bubbles. Background technique [0002] Flotation has always been the most widely used technology and method for separating useful minerals in the mineral processing industry. Methods of sorting stone minerals. Conventional flotation mostly uses air bubbles as the flotation carrier, and hydrophobic mineral particles are floated by the air bubbles. Air bubbles play a pivotal role in flotation as a carrier for mineral particles to float up. The earliest flotation technology did not use air bubbles but oil droplets as the carrier. Conventional foam flotation generally uses air bubbles as the carrier. The combination of air bubbles and mineral particles floats up to the top of the slurry and is discharged into a foam product. In the process of froth flotation, the collision probability and adhesion probability of air bubbles and mine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/008B03D1/02B03D101/02B03D103/04B03D103/06
CPCB03D1/008B03D1/02B03D1/021B03D2201/02B03D2203/04B03D2203/06
Inventor 周芳徐政和池汝安徐源来余军霞
Owner WUHAN INSTITUTE OF TECHNOLOGY