Recently, the world's first industrial-scale double reverse flotation plant for collophane was successfully launched at Hubei Yihua Group. This marks a significant breakthrough in the efficient utilization of phosphate resources, following years of research and development in heavy medium mineral processing technology to tackle long-standing global challenges in this field.
The facility, which cost 4.5 million yuan to build, began construction in October 2005 and was completed and started operations by the end of March 2006. It is now running smoothly, with all economic and technical indicators meeting or exceeding standards. The magnesium content in the final product is below 0.6%, and the recovery rate exceeds 90%. The P₂O₅ content in the ore is over 32%, and the ratio of sesquioxide to phosphorus is less than 10%. The project received strong support from national key scientific institutions such as Lianyungang Design Institute and Qingdao Chemical Design Institute, as well as local science and technology departments. This collaboration led to the establishment of the country’s largest beneficiation laboratory.
Through extensive small-scale trials and pilot tests, the successful industrial test has laid a solid foundation for future large-scale implementation. Currently, the beneficiation process costs over 200 yuan per ton, but it can upgrade low-grade phosphate rock (20% grade) to over 32% P₂O₅. This not only helps protect Yichang’s phosphate resources but also provides a scientifically sound, technologically viable, and economically efficient method for sustainable development in the phosphor chemical industry across Hubei Province and the nation.
The successful operation of this facility eliminates the traditional mining practice of "producing wealth while leaving behind poverty" and offers critical technical support to overcome the global challenge of beneficiating Yichang collophane ore. During the "Eleventh Five-Year Plan," Yihua Group plans to leverage its proprietary technology to establish a large-scale integrated project in Yichang, including a 3-million-ton-per-year high-concentration phosphorus compound fertilizer plant and a 1.5-million-ton-per-year phosphate ore beneficiation plant. This initiative has helped Yihua become China’s largest phosphorus chemical industry base.
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