Obverse flotation collecting agent for low temperature-resistant collophanite and preparation method thereof

Abstract

The invention relates to an obverse flotation collecting agent for low temperature-resistant collophanite and a preparation method thereof. The preparation method comprises the following technological steps of using plant oil residue acidified oil fatty acid as a raw material, utilizing a urea inclusion fractionating method to remove the saturated fatty acid with high melting point and low solubility, and preparing liquid acid with iodine value range of 140-165I2 / 100g, low melting point and high solubility and without saturated fatty acid; adding NaOH (sodium hydroxide) into the liquid acid to saponify, and then adding an additive, so as to obtain the obverse flotation collecting agent for the low temperature-resistant collophanite. The obverse flotation collecting agent for the low temperature-resistant collophanite has the characteristics that the chemical property is stable, the low temperature-resistant property is good, the solution and dispersing properties in water are good, the usage amount is less, the collecting property is strong, the selectivity is good, and the like; the grade of the concentrate can be effectively improved at the lower flotation temperature, and the content of impurities of the concentrate product can be reduced.

Description

Technical field [0001] The invention relates to a collophanite positive flotation collector, in particular to a method for preparing a collophanite positive flotation collector that does not contain high melting point saturated fatty acids at low temperature. Background technique [0002] In the flotation of phosphate rock, the collectors commonly used abroad are tall oil, oleic acid and their saponified compounds, and most of our country uses sodium fatty acid. Most of the fatty acids used as flotation collectors are derived from natural vegetable oils, but the fatty acid composition of different vegetable oils varies greatly depending on the variety. Therefore, the fatty acid collectors used in the flotation process of phosphate rock differ greatly in their fatty acid composition due to different sources. After experimental research, it is found that different fatty acids have greater differences in the separation of phosphate rock. Fatty acids can be divided into saturated f...

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Problems solved by technology

Therefore, when the water temperature in the northern region is lower than 15°C in winter, the pulp needs to be heated before flotation, and even in some concentrators, the pulp is heated all year round, and the energy consumption of flotation is large.

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