Progress in the Preparation of Calcium Carbonate by Indirect Mineralization of Industrial By-Product Gypsum

To avoid the long-term pollution of land and water by industrial gypsum by-products, the exploitation of this resource has become a priority. The indirect synthesis of calcium carbonate from the industrial by-product gypsum has received substantial attention as a viable method for resource utilization. Currently, the primary problems in the indirect manufacture of calcium carbonate from the industrial by-product gypsum are additive recycling and process simplification. This paper describes the present state of development and compares various indirect mineralization systems. The factors affecting leaching and mineralization in the indirect mineralization of CO2 from by-product gypsum and the management of CaCO3 crystallinity are discussed, and the current additive regeneration cycle is summarized. The applications of other technologies in the indirect mineralization of by-product gypsum are also summarized, as are the obstacles, and required future work. This review provides guidelines for the laboratory indirect mineralization of by-product gypsum as well as practical applications.

Automated summary

To prevent long-term pollution of land and water by industrial gypsum by-products, the utilization of this resource has become a priority. The indirect synthesis of calcium carbonate from the industrial by-product gypsum has received significant attention as a viable method for resource utilization. This paper discusses the current state of development, compares different indirect mineralization systems, and addresses challenges such as additive recycling and process simplification. It provides guidelines for laboratory research and practical applications in the indirect mineralization of by-product gypsum.