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
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[0061] Example 1 Preparation of collector I
[0062] Centrifuge the waste oil to remove suspended solids, add a certain amount of water to remove colloidal substances, dry and dehydrate, decolorize the 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 the waste oil. After cooling the obtained hydrolysate, it is extracted with petroleum ether. The upper layer is non-saponifiable and the lower layer is saponified; remove the saponified from the lower layer and add 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 to obtain collector I.
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[0063] Example 2 Preparation of collector II
[0064] Centrifuge the waste oil to remove suspended solids, add a certain amount of water to remove colloidal substances, dry and dehydrate, decolorize the 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 the waste oil. After cooling the obtained hydrolysate, it is extracted with petroleum ether. The upper layer is non-saponifiable and the lower layer is saponified. The saponified product from 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 to obtain the collector II of the present invention.
Example Embodiment
[0065] Example 3 Preparation of Collector III
[0066] Centrifuge the waste oil to remove suspended solids, add a certain amount of water to remove colloidal substances, dry and dehydrate, decolorize the 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 the waste oil. After cooling the obtained hydrolysate, it is extracted with petroleum ether. The upper layer is non-saponifiable and the lower layer is saponified; the saponified substance from 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 to obtain collector III.
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