Cr(VI) separation and detoxification of Cr(VI)-contained gypsum technology was developed through crystalline regulation at the interface;

The extracted Cr(VI) can be reused in chlorate industry, and the detoxified residue can be recycled in rubber, plastic, fertilizer, paint, textile, paper and other industries;

The cost of Cr-containing waste treatment was decreased 2000-3000 RMB per ton.