Calcium sulfate is a byproduct of the most with the sulfuric acid chemical processes.

In many cases, this product is turned into a dry cake with high purity in the factory after separation, filtration and washing.

Despite its high purity and gypsum phase conversion, it cannot be used as a construction material.

Therefore, many industries face large volumes of acidic waste depots that have high environmental accumulation costs.

The challenge: Inventing a method for converting process gypsum to construction gypsum with technical and economic justification on an industrial scale