A low-temperature instant phosphate rock flotation collector and its preparation method

Abstract

The invention relates to a low-temperature quick-dissolving phosphate ore flotation collector and a preparation method thereof. The preparation method comprises the steps that raw materials comprising, by weight, 40-44% of multiple-hydroxy fatty acid, 25-27% of oleic acid, 22-24% of water and 5-13% of AEO3 are added into a reaction kettle and are stirred and mixed at 70-90 DEG C for 20-40 minutes to obtain mixed materials; a caustic soda solution which accounts for 25-35% of the mixed materials is added into the mixed material, wherein the mass concentration of the caustic soda solution is 30%, the reaction temperature is controlled to be 90-100 DEG C, and the reaction is subjected to heat insulation for 100-140 min; and cooling is conducted, and the low-temperature quick-dissolving phosphate ore flotation collector is obtained. The low-temperature quick-dissolving phosphate ore floatation collector has the advantages that the product is quickly dissolved at low temperatures, and a collector solution with the mass concentration being 5% is dissolved within 40 min at the temperature of 40 DEG C; the product low-temperature mineral separation effect is good, a good mineral separation effect can still be achieved at 20 DEG C, and energy consumption is lowered; the product still does not gels at 15-17 DEG C, the equipment fault rate is lowered, and separation concentrator capacity is improved; and the Krafft point of the collector is lowered, the dissolving performance is improved, the collector has high lime soap dispersion, and softening water capability is high.

Description

technical field [0001] The invention belongs to the technical field of ore dressing collectors, and relates to a low-temperature instant phosphate rock flotation collector and a preparation method. Background technique [0002] Most phosphate rock beneficiation plants are equipped with sulfuric acid plants, which can use the steam generated in the sulfuric acid production process for heating and dispensing. However, in Guizhou, Sichuan and other places, there are still some concentrators with only ore concentrators and no steam. During the dispensing process, electric heating rods need to be used to heat water for dispensing. This method not only has low heating efficiency and slow heating speed, but also leads to incomplete dissolution of conventional fatty acid collectors, resulting in high consumption of flotation collectors. What's more serious is that conventional fatty acid collectors tend to gel at low temperatures, which can block pipelines and cause the processing ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a low-temperature instant phosphate rock flotation collector to solve the problems of low temperature dissolution efficiency, high energy consumption, high consumption of flotation collector and high equipment failure rate of the above-mentioned flotation collector. agent and preparation method, the flotation collector provided by the invention has a fast dissolution rate at low temperature, and under the condition of 40°C, the collector solution with a mass concentration of 5% can be dissolved within 40min, and the low-temperature ore dressing effect is good, and it remains stable at 20°C It has a good beneficiation effect and reduces energy consumption; low temperature does not gel, reduces equipment failure rate, and improves the production capacity of the beneficiation plant