Phosphate rock grinding aid and preparation method thereof

Abstract

The invention discloses a phosphate rock grinding aid and a preparation method thereof, which are mainly suitable for ore grinding production of flotation magnesium-removal phosphate rock. The phosphate rock grinding aid is prepared from the oleic acid, the lauryl amine and the triethanolamine at the weight ratio of (300-410):(150-190):(120-190). The phosphate rock grinding aid is good in dispersion effect, improves the grinding efficiency of phosphate rock, increases the ore grinding yield, reduces the energy consumption, increases the new surfaces of particles and reduces the dosage of the flotation magnesium-removal phosphate rock.

Description

technical field

[0001] The invention relates to a grinding aid and a preparation method thereof, in particular to a phosphate rock grinding aid and a preparation method thereof. Background technique

[0002] After flotation of low-grade phosphate rocks, the amount of sulfuric acid used in the phosphoric acid production process is reduced, and the concentration of phosphoric acid produced is increased, which is conducive to the production of high-nutrient fertilizers. Phosphate rocks generally require monomer dissociation before flotation. Fine-grained minerals have higher requirements for fineness, so phosphate rock must be ground before flotation, and the cost of crushing and grinding generally accounts for 10% of production costs and 50% of flotation costs, so research on how to improve Grinding efficiency, increasing output and reducing energy consumption are effective ways to save resources and reduce costs.

[0003] There are two main factors affecting mineral grinding...