Gypsum board, also known as drywall or plasterboard, is a common building material. The machinery used to produce it is complex and integrates several processes into a continuous production line. Understanding the core components and their functions is essential for anyone involved in the manufacturing or procurement of this equipment. Hengshui Decheng Machinery & Equipment Co., Ltd. focuses on the engineering and supply of such industrial systems.

The sulfur-containing flue gas generated by thermal power plants is treated through desulfurization, producing desulfurized gypsum. Once the desulfurized gypsum enters the workshop, it undergoes multiple processing steps, including grinding, additive mixing, foaming, water reduction, setting, and edge sealing, ultimately forming gypsum boards.

Tongling, a major hub for China’s copper industry and sulfur-phosphate chemical production, has long been known for its industrial by-products: the black copper slag mountain, the red sulfur slag mountain, and the white phosphogypsum mountain, collectively referred to as the “Three Mountains.” Today, through measures such as controlling new waste generation, reducing existing stockpiles, recycling, and industrial utilization, Tongling’s traditional industries are undergoing a green transformation.

According to Document No. 291 (2023) issued by the Ministry of Industry and Information Technology of China in October 2023, the third batch of industry standards revision and foreign-language projects includes the preparation of the 2023-1561T-JC “Test Method for Setting Time of Gypsum Cementitious Materials – Ultrasonic Method”. The Institute of Scientific and Technical Information of Building Materials Industry and other organizations are responsible for drafting this new industry standard.

Recently, the China Building Materials Federation (CBMF) announced the list of winners for the Building Materials Industry Product Instruction Contest. Among the award recipients, Tangshan Kaijie Desulfurization Gypsum Products Co., Ltd., a member unit of the Gypsum Building Materials Branch of the CBMF, received the Third Prize for its outstanding product — Lightweight Plaster Gypsum.