On April 8, the Fifth National Seminar on High-Efficiency Utilization Technology of Low-grade and Refractory Metallurgical Mineral Resources was successfully held in Zhengzhou, Henan.

The participating units were: Beijing General Research Institute of Mining and Metallurgy, Zhengzhou University, Central South University, Fuzhou University professor, Hunan Institute of Nonferrous Metals, University of Science and Technology Beijing, Zhengzhou Institute of Comprehensive Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Zijin Mining Group, China Minmetals Group, Xiamen Zijin Mining and Metallurgical Technology Company, and our company-Henan Lvjin Mining Technology Co., Ltd. The company also participated in this meeting, and many companies and institutions have expressed strong interest in our products-environmentally friendly gold extractors and gold flotation collectors, and hope to have opportunities for cooperation with our company. The theme of this conference is "strengthening scientific and technological innovation and welcoming the new revitalization of the mining industry". The main contents include:

1. The combined technology and process of low-grade, refractory mineral resources beneficiation and smelting

2. High-efficiency pre-selection technology and equipment for extremely low-grade mineral resources;

3. Bioleaching technology for low-grade and difficult-to-select non-ferrous metal ore;

4. Ultra-fine crushing and dry separation technology of low-grade ore;

5. The key technologies and industrialization technologies for the comprehensive utilization of extremely low or ultra-low grade polymetallic co-associated mineral resources;

6. Progress in pretreatment technology for difficult-to-select polymetallic mineral resources;

7. The latest research status of flotation reagents;

8. The latest development of non-cyanide leaching reagents for gold ore;

9. Research on crystal chemistry genes based on mineral flotation;

10. The concept and application of harmonious beneficiation;

11. Application of quantum chemistry theory in the research of flotation reagents;

12. Research on energy-saving and consumption-reducing model and application of grinding;

13. Real-time detection and intelligent optimization technology of the beneficiation process.

14. Research on separation, extraction and purification of valuable metal elements from industrial waste;

15. Research on the recycling mechanism of mineral processing wastewater;

16. New technologies for comprehensive utilization of tailings, waste residues and wastewater;

17. Research and practice of comprehensive utilization technology of mine tailings.

18. Progress in the transportation and storage of tailings;

The purpose of this conference is to exchange research results in the field of mineral processing during the economic transition of our country, promote resource conservation of enterprises, discuss the development direction of new technologies, new processes, and new equipment for mineral processing, enhance core competitiveness, and strengthen mining enterprises, scientific research institutes, and research institutes. The cooperation and exchanges between universities, colleges and equipment manufacturing companies ended successfully after two days of meetings!