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

A collector and gutter oil technology, applied in flotation, solid separation, etc., can solve the problems of no research reports, etc., and achieve the effects of simple process flow, improved competitiveness, and reduced production costs

Active Publication Date: 2011-11-16
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] Example 1 Preparation of collector I

[0067] The waste oil is centrifuged to remove suspended solids, a certain amount of water is added to remove colloidal substances, dried and dehydrated, the clay is decolorized, and then hydrolyzed by adding sodium hydroxide, the reaction temperature is 60-80 ° C, the reaction time is 60 minutes, the amount of sodium hydroxide It is 2% of the quality of waste oil, after cooling the obtained hydrolyzate, use petroleum ether extraction, wherein the upper layer is a non-saponifiable matter, and the lower layer is a saponified matter; taking the saponified matter of the lower layer and adding a certain amount of hydrochloric acid with a mass concentration of 10% solution, so that the weight ratio of the mixed fatty acid and the mixed fatty acid sodium salt in the product is 1:1, that is, the collector I is obtained.

Embodiment 2

[0068] Example 2 Preparation of collector II

[0069] The waste oil is centrifuged to remove suspended solids, a certain amount of water is added to remove colloidal substances, dried and dehydrated, the clay is decolorized, and then sodium hydroxide is added for hydrolysis. The reaction temperature is 50-70 ° C, the reaction time is 70 minutes, and the amount of sodium hydroxide For 4% of the quality of waste oil, after cooling the obtained hydrolyzate, use petroleum ether to extract, wherein the upper layer is a non-saponifiable matter, and the lower layer is a saponified matter; The saponification of the lower layer is added to a certain amount of hydrochloric acid with a mass concentration of 8%. solution, so that the weight ratio of the mixed fatty acid and the mixed fatty acid sodium salt in the product is 1:10, that is, the collector II of the present invention is obtained.

Embodiment 3

[0070] Example 3 Preparation of collector III

[0071] The waste oil was centrifuged to remove suspended solids, a certain amount of water was added to remove colloidal substances, dried and dehydrated, the clay was decolorized, and then sodium hydroxide was added for hydrolysis. The reaction temperature was 70-90 ° C, the reaction time was 30 minutes, and the amount of sodium hydroxide It is 5% of the quality of the waste oil, after cooling the obtained hydrolyzate, use petroleum ether extraction, wherein the upper layer is a non-saponifiable matter, and the lower layer is a saponified matter; The saponified matter of the lower layer is added a certain amount of mass concentration and is 12% hydrochloric acid solution, so that the weight ratio of the mixed fatty acid and the mixed fatty acid sodium salt in the product is 10:1, that is, the collector III is obtained.

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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 of ores, in particular to a method for apatite flotation using a collector prepared from waste oil. Background technique [0002] As collectors, fatty acid compounds have important applications 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 various fatty acid components extracted from papermaking waste liquid, such as animal and vegetable fatty acids (soap), naphthenic acid (soap), oxidized paraffin (soap), tar oil (soap) and its refined products. [0003] Because fatty acids have very active carboxyl functional groups, they can float many minerals. As anionic collectors, fatty acid compounds have been widely used in mineral flotation for a long time. The main flotation minerals are: ① alkaline earth metal sal...

Claims

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Application Information

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Patent Type & Authority Applications(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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