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Method for using collector prepared from illegal cooking oil in fluorite flotation

A collector and waste oil technology, applied in the field of fluorite flotation, can solve the problem of lack of research reports, and achieve the effects of improving technical indicators, reducing the loss of concentrates, and reducing production costs

Active Publication Date: 2011-11-16
BEIJING JUNZHIQING SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] After reviewing a large amount of literature, there is no research report on the mixed fatty acids prepared from waste oil as collectors.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Embodiment 1 prepares collector I

[0062] Centrifuge the waste oil to remove suspended solids, add a certain amount of water to remove colloidal substances, dry and dehydrate, bleach with clay, and then add sodium hydroxide for hydrolysis. The reaction temperature is 60-80°C, the reaction time is 60 minutes, and the amount of sodium hydroxide It is 2% of the quality of gutter oil. After the obtained hydrolyzate is cooled, it is extracted with petroleum ether, wherein the upper layer is unsaponifiable, and the lower layer is saponifiable; the saponifiable in the lower layer is added with a certain amount of hydrochloric acid with a mass concentration of 10%. Solution, so that the weight ratio of mixed fatty acid and mixed fatty acid sodium salt in the product is 1:1, promptly obtains collector I.

Embodiment 2

[0063] Embodiment 2 prepares collector II

[0064] Centrifuge the waste oil to remove suspended matter, add a certain amount of water to remove colloidal substances, dry and dehydrate, bleach with clay, and then add sodium hydroxide for hydrolysis. The reaction temperature is 50-70°C, the reaction time is 70 minutes, and the amount of sodium hydroxide It is 4% of the quality of gutter oil. After the obtained hydrolyzate is cooled, it is extracted with petroleum ether, wherein the upper layer is unsaponifiable, and the lower layer is saponifiable; the saponifiable in the lower layer is added with a certain amount of hydrochloric acid with a mass concentration of 8%. Solution, so that the weight ratio of mixed fatty acid and mixed fatty acid sodium salt in the product is 1:10, promptly obtains collector II of the present invention.

Embodiment 3

[0065] Embodiment 3 prepares collector III

[0066] Centrifuge the waste oil to remove suspended solids, add a certain amount of water to remove colloidal substances, dry and dehydrate, bleach with clay, and then add sodium hydroxide for hydrolysis. The reaction temperature is 70-90°C, the reaction time is 30 minutes, and the amount of sodium hydroxide It is 5% of the quality of gutter oil. After the obtained hydrolyzate is cooled, it is extracted with petroleum ether, wherein the upper layer is unsaponifiable, and the lower layer is saponifiable; the saponifiable in the lower layer is added with a certain amount of hydrochloric acid with a mass concentration of 12%. Solution, so that the weight ratio of mixed fatty acid and mixed fatty acid sodium salt in the product is 10:1, namely obtain collector III.

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PUM

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Abstract

The invention relates to a method for using a collector prepared from illegal cooking oil in fluorite flotation. The collector is prepared by the following steps: (a) purifying and extracting illegal cooking oil; and (b) subjecting the purified and extracted illegal cooking oil obtained by the step (a) to a hydrolysis reaction and thus obtaining the collector for use in ore floatation. When the collector prepared from the illegal cooking oil, which is used in the invention, is used in fluorite flotation, the selectivity of the collector is improved, and the technical index and economic index of the flotation can be improved. As the illegal cooking oil is used as the raw material for preparing the collector, the technical scheme adopted by the invention has a great significance for avoiding environment pollution, simplifying production process, reducing food safety threats and the like.

Description

technical field [0001] The invention belongs to the field of collectors for flotation ores, in particular to a method for using a collector prepared from waste oil for fluorite flotation. Background technique [0002] Fatty acid compounds have important applications as collectors in mineral flotation. Commonly used fatty acid collectors include higher fatty acids and their sodium salts, such as: oleic acid, sodium oleate, and by-products from animal and plant and petroleum processing, Products containing a variety of fatty acids extracted from papermaking waste liquid, such as animal and vegetable fatty acids (soap), naphthenic acid (soap), oxidized paraffin wax (soap), tall oil (soap) and their refined products. [0003] Because fatty acids have very active carboxyl functional groups, they can float many minerals. Fatty acid compounds, as anion collectors, have been widely used in mineral flotation for a long time. The minerals that can be floated mainly include: ① Alkali...

Claims

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Application Information

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IPC IPC(8): B03D1/008B03D1/00B03D101/02B03D103/02
Inventor 王化军马鸿志刘旭仵晓丹葛鹏何秋慧
Owner BEIJING JUNZHIQING SCI & TECH
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