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.