Recently, the Hunan Changsha Institute of Mining and Metallurgy undertook... “ Complex Associated Fluorite Low-Temperature High-Efficiency Flotation Technology ” The key research project has passed acceptance and officially entered production. This signifies a major breakthrough in Hunan Province regarding the globally challenging issue of the comprehensive recovery of complex associated fluorite.

　　Chenzhou Shizhuyuan is a rare global deposit rich in multiple non-ferrous metals, with reserves of associated fluorite nearing— 1 100 million tons, accounting for the nation's total associated fluorite reserves. 70% , with potential value up to 2200 Over 100 million yuan. After preliminary multi-metal beneficiation, the tailings still contain substantial unrecovered fluorite resources. However, they suffer from issues such as low main-grade content, high impurity levels, and significant interference from residual reagents left over from multi-metal beneficiation on the fluorite flotation process. Consequently, their purification and recovery have become widely recognized as a major challenge in the industry and have been included numerous times in national science and technology research programs.

　　To fully utilize the fluorite resources in the Shizhuyuan tailings, Hunan Nonferrous Chenzhou Fluorochemical Co., Ltd. organized a special research effort. However, due to technological limitations, in recent years the grade of fluorite concentrate recovered from the tailings has only reached— 88% , the recovery rate is approximately 45% The recovered fluorite concentrate is difficult to meet the requirements for chemical-grade industrial applications.

　　The Changsha Institute of Mining and Metallurgy has launched research on the comprehensive recovery of associated fluorite. After... 5 Through year-long focused research, we have developed a complete set of efficient technologies for the recovery of complex coexisting fluorite: Based on the optimal flotation separation ranges unique to fluorite and gangue minerals, we have pioneered a stepwise inhibition process that significantly enhances the grade of fluorite concentrate. ; Develop a new stripping technology to improve the surface properties of fluorite, enhance its floatability, and increase recovery rates. ; Develop innovative fluorite flotation reagents to address the challenge of unstable fluorite recovery caused by the poor low-temperature and acid-base resistance of conventional fluorite flotation reagents.

　　2016 Year 8 In the month, Hunan Nonferrous Chenzhou Fluorine Chemical Co., Ltd. conducted industrial trials of its breakthrough achievements, resulting in simultaneous improvements in both the quality and output of fluorite concentrate. Currently, the concentrate grade can reach... 93% Above, the recovery rate can reach 70% The above—Zhang Yongzhong, General Manager of Hunan Nonferrous Chenzhou Fluorine Chemical Co., Ltd., stated that the company has firmly established itself at a world-leading level.