Antifoaming agent for phosphoric acid extracting production, and preparation method thereof

Abstract

The invention discloses an antifoaming agent for phosphoric acid extracting production. The antifoaming agent comprises, by weight, 20-40 parts of an antifoaming dispersant, 20-50 parts of a foaming inhibitor, 5-30 parts of an emulsifier and 20-60 parts of water. The antifoaming agent of the invention solves the defoaming problem of wet process phosphoric acid by combining the antifoaming and foam-inhibiting components; and the antifoaming agent of the invention does not affect the quality of the phosphoric acid, and has good antifoaming and foam-inhibiting effect in phosphoric acid extraction. The invention also discloses a preparation method of the antifoaming agent for phosphoric acid extracting production. The preparation method comprises the following steps: adding water into a reaction kettle, simultaneously slowly adding the foam inhibitor and the emulsifier to the obtained water bath pot, performing stirring at room temperature for 10-20 min, then slowly adding the antifoamingdispersant, and performing stirring for 2-4 min. The preparation method of the invention has the advantages of simple process, easiness in preparation, and short reaction time.

Description

technical field [0001] The invention belongs to the technical field of phosphoric acid production, and in particular relates to a defoamer for extracting phosphoric acid production and a preparation method thereof. Background technique [0002] A large amount of flotation agents remain in the phosphate rock during the flotation process. The presence of these flotation agents leads to a large amount of stable foam in the subsequent wet-process phosphoric acid extraction section, which seriously affects the entire wet-process phosphoric acid production. The phosphate rock industry has been using scrubbing phosphoric acid ore to produce wet-process phosphoric acid for many years. At present, due to the sharp decrease of scrubbing high-grade phosphorous concentrate and the increase of flotation phosphorous concentrate, foaming occurs in the production process of wet-process phosphoric acid. It will take some time for enterprises to adapt to the production of flotation phosphate...

AI Technical Summary

Problems solved by technology

At present, there are many kinds of defoamers used in the market, all of which have problems such as poor defoaming effect, poor foam suppression effect, and poor mineral adaptability.

At the same time, the current defoamers are aimed at the production of wet-process phosphoric acid defoamers from carbonate-type phosphate rocks. There are no reports on the defoamers for silicate-type, mixed-type, associated organic matter in phosphate rocks, and new flotation agents.

Images