What is the scale formed during the production of phosphate fertilizers?
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The pipeline used for producing phosphate fertilizers is made of glass fiber reinforced plastic with a polyethylene PE lining; over time, a thick layer of colorless, hard crystals forms inside the pipe wall as a result of its long-term use. What substance is it? Are there any good ways to dissolve it?
Phosphatic fertilizer or phosphoric acid? If the scaling occurs in the phosphoric acid production pipelines, it is usually caused by potassium and sodium fluosilicates as well as phosphogypsum; this scaling can be removed using hot water or dilute sulfuric acid
It is mainly hydrous silicate, and it is cleaned using fluorosilicic acid.