Mineral-floating foaming agent and its prepn

A mineral flotation and foaming agent technology, applied in flotation, solid separation, etc., can solve the problems of poor biodegradability, high foam viscosity, difficult defoaming, etc., and achieve good biodegradability, foam toughness and brittleness, The effect of high bubble speed

Inactive Publication Date: 2003-03-19
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many defects in the terpineol foaming agent. For example, in the flotation of copper oxide with high mud content and cationic reverse flotation of some oxidized ores, it is difficult to defoam due to the high viscosity of the foam produced by it, which leads to run-off and affects The production is going on normally, and its dosage is correspondingly increased. At the same time, the smell of terpineol is very strong, which affects human health.
Terpineol discharged with tailings has poor biodegradability and pollutes aquatic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The ingredients are mixed according to the weight ratio of isopropanol: propylene oxide = 1:1.1, and at the same time, 0.3% of the total weight of the raw materials is added. Potassium oxide is put into the autoclave, and the reaction is performed at a pressure of 0.5-1MPa and a temperature of 170-190℃. After hours, the pressure was reduced to normal pressure, cooled to 50°C with water, and the catalyst was filtered to obtain a flotation foaming agent product. This product is suitable for flotation of mixed ore containing muddy copper oxide and copper sulfide. Conducive to the recovery of fine-grained gold and silver.

Embodiment 2

[0028] Mix the ingredients according to the weight ratio of isobutanol: propylene oxide: ethylene oxide = 1:1.5:1.5, add 0.6% of the total weight of the raw material amount of sodium oxide, and put it into the autoclave at a pressure of 0.1-1.1MPa, After reacting at 170-190°C for 2.5 hours, cooling with water, depressurizing to normal pressure, and cooling to a temperature of 48°C, filter to remove the catalyst to obtain a flotation foaming agent product. The product has good foaming performance and moderate brittleness, and can be used for the flotation of general copper sulfide ore.

Embodiment 3

[0030] According to the weight ratio of isoamyl alcohol: ethylene oxide = 1:5.5 and add 0.4% of the total weight of raw materials sodium oxide, in an autoclave, react at a pressure of 0.8-1MPa and a temperature of 170-190℃ for 2 hours , Then cool to below 50℃, reduce the pressure to normal pressure, filter to remove the catalyst to obtain the flotation foaming agent product. The foaming property of this product is relatively low, and it has good viscosity, which is suitable for the flotation of general sulfide ore.

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PUM

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Abstract

The present invention proposes one kind of mineral-floating foaming agent and its preparation. The foaming agent contains alcohol with branch chain and epoxy ethane and/or epoxy propane in the weight ratio of 1 to 1-6, and the alcohol with branched chain may be isopropyl alcohol, isobutyl alcohol or isoamyl alcohol. It is prepared through mixing alcohol with branched chain and epoxy ethane and/or epoxy propane, adding oxide of K or Na in 0.3-1% of material weight as catalyst, reaction at 0.01-1.2 MPa pressure and 170-190 deg.c temperature for 2-3 hr, decreasing the pressure to nomral pressure, cooling to below 50 deg.c and filtering. The foaming agent is water soluble, good in dispersivity, great in formed foam, favorable to secondary enrichment and recovery of fine mineral and has no environmental pollution.

Description

Technical field [0001] The invention relates to a foaming agent selected for mineral floatation and its preparation technology. Background technique [0002] In order to effectively separate useful minerals from gangue minerals, in flotation technology, foaming agents are often used to generate a large amount of foam and form a large amount of liquid-gas interface. When useful minerals are enriched and float on the liquid-gas interface and separate from the gangue, it is called flotation. When gangue minerals are enriched and float on the liquid-gas interface, and useful minerals do not float, it is called reverse flotation. [0003] Flotation has strict requirements on the size, brittleness, toughness, and strength of the foam, and it does not only need to be foamed. Under normal circumstances, coarse particle flotation requires large bubbles, and fine particle flotation requires micro bubbles. The brittleness and toughness should also be moderate. If the foam is too brittle, it...

Claims

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Application Information

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IPC IPC(8): B03D1/008
Inventor 葛英勇
Owner WUHAN UNIV OF TECH
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