Method for floatation of apatite using collector prepared from illegal cooking oils

A collector, waste oil technology, applied in flotation, solid separation and other directions, can solve the problem of lack of research reports, and achieve the effects of simple process flow, reduced production cost, and easy centralized treatment

Active Publication Date: 2014-08-13
鄂尔多斯市君致清环境科技有限公司
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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

[0066] Embodiment 1 prepares collector I

[0067] 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

[0068] Embodiment 2 prepares collector II

[0069] 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

[0070] Embodiment 3 prepares collector III

[0071] 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 the floatation of apatite using a collector prepared from illegal cooking oils, wherein the preparation of the collector comprises the following steps of: (a) cleansing and purifying the illegal cooking oils; and (b) performing a hydrolysis reaction on the illegal cooking oils cleansed and purified in the step a, thereby obtaining the collector for the floatation of minerals. The collector prepared from the illegal cooking oils in the invention, if used for the floatation of apatite, is capable of improving the selectivity of the collector and advantageous to increasing the technique indexes and the economic indexes of the floatation; as the raw materials for preparing the collector in the invention are the illegal cooking oils, the technical solution of the invention plays an important role in avoiding environmental pollution, simplifying production process and 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 apatite 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 Alkalin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/008B03D1/00B03D101/02B03D103/06
Inventor 王化军马鸿志于慧梅葛鹏刘旭仵晓丹何秋慧
Owner 鄂尔多斯市君致清环境科技有限公司
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