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Due to the presence of a certain amount of impurities in dilute phosphoric acid, during the concentration production process, the evaporation of water also concentrates these impurities in the dilute phosphoric acid. When their concentration exceeds their solubility, they will precipitate in a supersaturated state, leading to the deposition of scale on the heat exchangers, evaporators, acid pumps, and pipelines of the concentrated phosphoric acid production equipment, which severely affects the continuous normal operation of production and causes significant economic losses to the enterprise. This product is a specialized additive developed to solve the problem of harmful salt deposits and scaling in phosphoric acid concentration production. It effectively prevents or slows down the deposition, loosens, and reduces the adhesion of deposits formed by impurities such as potassium and sodium salts during phosphoric acid concentration production. With a certain amount of addition, it can greatly extend the continuous normal production cycle without adversely affecting the production process and its subsequent processes, making it a very effective specialized additive for phosphoric acid concentration production.
Key words: Phosphate compound fertilizer auxiliariesproductionconcentrated
This product is a graft copolymer of polyacrylamide, which contains a certain number of polar groups in its molecular chain. It can adsorb solid substances suspended in phosphoric acid and charged particles, bridging between particles or causing them to coagulate into larger flocs that settle down through charge neutralization. After adding a settling agent in the filtration process, the settling speed of acid residue in phosphoric acid can be accelerated, making it easier to filter phosphoric acid; adding a settling agent in the concentrated acid storage tank can reduce the residence time of concentrated acid in the tank, lower the solid content in concentrated acid, and increase the load of the device. This product is mainly used in the flotation, filtration, and settling processes in phosphate fertilizer production.
Key words: Phosphate compound fertilizer auxiliariesacidconcentrated
