Phosphogypsum Turns into Green Building Materials: A Technological Fix for the Phosphorus Chemical Industry's Environmental Challenge"

Phosphogypsum is the main solid waste generated during the production of wet-process phosphoric acid. For every ton of phosphoric acid produced, about 4–5 tons of phosphogypsum are generated as a byproduct. For a long time, large stockpiles of phosphogypsum have not only occupied land but also posed environmental risks, becoming a "heartache" restricting the green development of the phosphorus chemical industry.

Today, a mature technical pathway is turning this challenge into a resource — using phosphogypsum to produce building materials. Through processes such as washing, neutralization, and calcination, impurities such as residual phosphoric acid and fluorides in phosphogypsum can be effectively removed, transforming it into construction gypsum powder that meets national standards. This can then be further processed into high-value-added products such as gypsum blocks, plastering mortar, and self-leveling compounds.

The value of this technology is multidimensional: in terms of environmental protection, it reduces solid waste stockpiling and lowers the risk of leakage; economically, it turns waste into wealth and opens up new profit growth points; socially, it reduces the mining of natural gypsum and protects the ecological environment.

For phosphorus chemical enterprises, the resource utilization of phosphogypsum is no longer an "option," but a "must-answer question" for achieving sustainable development.