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With an annual production of 80 million tons, the industry is actively exploring new ways to utilize phosphogypsum

2024-04-17View Original

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The industry is actively exploring new ways to utilize phosphogypsum. According to Sinochem News, in order to further reduce the amount of phosphogypsum produced, ensure its harmless treatment, and enable its recycling, as well as to improve the level of comprehensive utilization of phosphogypsum, seven departments including the Ministry of Industry and Information Technology have recently jointly issued the \"Action Plan for the Comprehensive Utilization of Phosphogypsum\" (hereinafter referred to as the \"Plan\"). In this regard, many industry experts believe that this move points the way to addressing the industry’s key challenges; it will have a positive impact on the industry in terms of both capacity and output, as well as on economic efficiency. In interviews, the reporter learned that with the goal of achieving a comprehensive utilization rate of 65%, the industry is actively exploring new ways to utilize phosphogypsum. China generates approximately 80 million tons of phosphogypsum each year, which not only wastes land resources but also affects the environment and soil ecology. How to make use of phosphogypsum to the fullest extent has become a pressing challenge for the industry. The reporter noted that the plan sets a target of achieving a 65% comprehensive utilization rate for phosphogypsum by 2026, yet the current comprehensive utilization rate in China is only around 40%. What further efforts does the industry need to make to achieve this goal? “With technological innovation and progress, there will be an increasing number of ways to utilize phosphogypsum as a resource, and it is entirely achievable for China to achieve a comprehensive utilization rate of 65% for phosphogypsum. ”Tang Jianwei, director of the Henan Province Engineering Research Center for Pollution Reduction and Carbon Emission Cutting, as well as a professor at the School of Ecology and Environment at Zhengzhou University, explained that \"currently, the industry is making active efforts to achieve simultaneous increases in both the volume and efficiency of the comprehensive utilization of phosphogypsum. This is done first by employing pre-treatment processes such as washing and purification, as well as calcination, to improve the quality of phosphogypsum for use as a resource.\" Secondly, in terms of comprehensive utilization, chemical or microbial methods are employed to process and produce chemical raw materials, such as producing sulfuric acid while also generating cement ; Production of α-high-strength gypsum cementitious materials, etc. ” Tang Jianwei said, “Given the large volume of phosphogypsum generated, in addition to exploring various ways for its comprehensive utilization, it is also necessary to find mainstream application areas with high demand.” Currently, many companies in the industry are actively exploring the agricultural sector, which has significant potential demand, as a new area for utilizing phosphogypsum. In addition to conducting research in the agricultural field, our team has also been working on developing phosphogypsum-based energy storage materials by combining phosphogypsum with energy storage materials. ” According to reports from journalists, regions such as Yunnan, Hubei, Guizhou, Sichuan, and Anhui are currently making active efforts to promote the comprehensive utilization of phosphogypsum, and relevant enterprises are also exploring new ways to utilize this material. The introduction of the \"Plan\" has provided a direction for the industry; it is necessary to innovate not only in technology but also in products, as well as in expanding application scenarios. Following this development approach, the company’s comprehensive utilization rate of phosphogypsum has now reached 70%, with it being primarily used in two areas: cement retarders and building materials. Among them, cement retarding agent products employ a pressurized transformation process to achieve greater stability in product quality ; The gypsum powder product utilizes the country’s first flotation process, achieving a removal rate of 90%. In the Dongbao Industrial Park of Jingmen City, the test road constructed by Xinyangfeng using phosphogypsum base material with a 90% content is currently in good condition. At Guizhou Phosphorus Chemical Group, the country’s first pilot production line capable of producing 25,000 tons per year of anhydrous gypsum masterbatches and packaging materials has opened up a new pathway for the utilization of phosphogypsum. According to officials from Guizhou Phosphorus Chemical Group, this project uses anhydrous gypsum as the main raw material, with a usage rate of up to 70%, which significantly improves resource utilization efficiency and reduces production costs. Moreover, anhydrous gypsum cartons can replace traditional packaging materials, effectively reducing deforestation, and are of great significance for protecting the ecological environment and promoting sustainable development. Jian Min, head of the New Energy Division of Kim Jong-dae Group and head of the Guizhou company, said, “The introduction of this ‘Plan’ will further promote the development of the industry, and it will have a positive impact on capacity utilization, production levels, and economic benefits.” ” According to him, the comprehensive utilization rate of phosphogypsum at Kim Jong-dae’s facility in Guizhou has now reached 100%, with phosphogypsum being used primarily to produce acid, as well as cement and calcium-silicon-potassium-magnesium fertilizers. In the future, the company will also build on its presence in the building materials industry to expand the applications of products such as cement retarders and blocks.

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