Last week, the first China Mining Technology Innovation and Sustainable Development Forum was held in Shanghang County, Fujian Province. Chen Jinghe, Chairman of Zijin Mining Group Co., Ltd., introduced Zijin Mining's practical achievements in the field of green and high-quality development with the title of "Green, High-quality and Sustainable Development of Mining Engineering".
Chen Jinghe said that mining development is essentially just one of many geotechnical projects. Due to the limitations of history and knowledge, traditional mining development was once considered a destroyer of the environment. However, modern geotechnical engineering such as highways, high-speed railways, park landscapes, etc., are highly praised because of their high emphasis on ecological reconstruction and their "high-looking appearance". In fact, mining projects can also achieve ecological reconstruction, and the "value" will be high.
"Modern mining projects can completely realize the harmony and unity of development and the environment. Zijin Mining's mining development practices and development show that the mining industry can completely achieve green, high-quality and sustainable development." Chen Jinghe said.
At the forum, Chen Jinghe introduced the practice of green and high-quality development of Zijinshan Gold and Copper Mine. He said that Zijinshan Gold and Copper Mine, as a practitioner of green and high-quality development, has become an excellent case of green and high-quality development of low-grade resources through continuous technological innovation.
In the 1980s, the Zijinshan gold-copper deposit made important prospecting breakthroughs. The prospecting results won the first prize of the National Science and Technology Progress Award and the first prize of the Ministry of Geology and Mineral Resources. After that, Zijinshan Gold and Copper Mine continued to innovate in thinking and caused a major fission of resources.
Chen Jinghe said that Zijinshan Gold and Copper Mine has been continuously optimizing all aspects of the process, especially for Zijinshan’s copper-containing acid wastewater with different concentrations. Zijin performs deep extraction/selective precipitation/membrane mass transfer separation and copper biological copper extraction system coupling. Zero discharge of waste water was realized, and the soil modification was carried out by screening the native plants with strong tolerance to realize the successful reconstruction of the ecological environment of large mines.
"Purple Mountain has become a national industrial tourism demonstration site, built a national mine park, was selected as a national green mine list, won the honorary title of the national comprehensive utilization of resources demonstration base and other honorary titles, green has become the new business card of the company's development." Chen Jinghe said.
Chen Jinghe also introduced the current development status of my country's mining industry. He said that China's resource reserves and consumption are seriously imbalanced. In 2019, China’s major metal resource reserves accounted for 7% of the world’s gold, 4% of copper, 9.6% of iron, and 9% of zinc. In 2019, China’s major metal consumption accounted for 23% of the world’s gold and 47% of copper. %, iron is 53%, zinc is 48%. Taking copper concentrates as an example, the degree of dependence on foreign sources rose from 61% in 2007 to 76% in 2019; the degree of dependence on iron ore has risen even more rapidly, reaching 67% in 2013 and nearly 90% last year.
At the same time, the profitability of my country's metal mining companies is relatively low. According to the China Enterprise Federation's "2019 China Top 500 Enterprises Development Report", the average net profit of the listed metal mining companies is only 200 million yuan, and the return on net assets is 0.92%; while the average net profit of the 500 companies on the list is 7.1 billion yuan , The return on net assets is 9.65%.
"These all show that the mining industry urgently needs green and high-quality development programs, such as the development of a large number of low-grade and difficult-to-treat mineral resources through a series of technology and management innovations." Chen Jinghe said.
