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China drying wire Reuters, held in Linli County, Hunan Non-metallic Minerals Industry Association scientific and technological innovation spot cum sulfuric acid anhydrite cement carbon cycle cogeneration technology projects put into operation at the press conference, Hunan Xiangfu New Building Materials Co., Ltd. announced that it will build A new type of gypsum chemical base with a total investment of 500 million yuan is used to build the world's most technologically advanced production line of anhydrite and sulfuric acid co-production cement. The first phase of a 200,000-yuan cement production line with an annual output of 100,000 tons of sulfuric acid and 150,000 tons of sulfuric acid is officially completed. Put into production. Experts at the meeting believed that the gypsum-based sulfuric acid cogeneration cement technology independently developed by Xiangfu Co., Ltd. has achieved industrialization and created a new raw material route for our country's sulfuric acid industry. It is a major initiative for our country's sulphuric acid industry.
According to Liu Liwen, the chairman of the company, the project uses anhydrite as the basic raw material, calcined, waste residue to produce cement, and flue gas to produce sulfuric acid. The entire production system uses water to close the cycle and achieves zero discharge of “three wastesâ€. The main resource cost of the anhydrite sulphuric acid process is only 10% to 15% of the sulphuric acid, and 15% to 20% of the pyrite sulphuric acid. At the same time, the carbon dioxide emissions of waste co-produced cement are also significantly lower than traditional processes.
Using this innovative technology, the company plans to invest 500 million yuan to build a production line of anhydrite (300,000 tons/year) combined cement (500,000 tons/year) in Linyi County to create a new gypsum chemical base. The entire project will be carried out in two phases. The first phase will invest 200 million yuan to build an annual output of 100,000 tons of sulfuric acid cogeneration 150,000 tons cement production line. The project started in 2010 and has now been completed and put into operation. After the completion of the project, annual sales income of 400 million yuan will be realized.
China has abundant reserves of gypsum. In the past, it was mainly used as a retarder for cement. The added value of the product was low, and its usage was not large. Sulfuric acid is an important basic chemical raw material. With the development of our country's economy, the demand for sulfuric acid is increasing. However, sulfur, which is a raw material for the production of sulfuric acid, is heavily dependent on imports. As a high-tech private enterprise integrating gypsum mining, production and scientific research, Xiangfu Company has used Linyi's rich anhydrite resources and passed 8 years of R&D. It has successfully broken through the limitation of sulfuric acid raw materials to improve the industrialized gypsum-to-sulphuric acid co-production cement. Key technologies and complete system operation assurance technologies have achieved the goal of transforming the advantages of bulk inexpensive gypsum resources into economic advantages and industrial advantages.
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