A research team from China Minmetals Corporation has developed a key technology for the high-temperature purification of graphite, successfully developing ultra-high purity graphite products with a purity exceeding 99.99995 percent, marking that China's ultra-high purity graphite products have reached the international leading level, experts said at a news conference held on Tuesday in Hegang city, Heilongjiang province.
Ultra-high purity graphite refers to graphite with a carbon content of over 99.99 percent, which features good self-lubrication, good conductivity, corrosion resistance, high-temperature resistance and excellent chemical stability.
Wang Jionghui's team is studying graphite purification technology
"In collaboration with leading equipment manufacturing companies in the industry, we independently developed a continuous graphite purification process and equipment," said Wang Jionghui, the team leader. "Through a combination of physical and chemical purification, low-temperature and high-temperature continuous purification, and ultra-high vacuum purification, we achieved a stepwise purification process that increased the graphite purity from 95 percent to over 99.99995, while maintaining product quality stability."
The company owns one of the largest graphite mine across the world - Yunshan Graphite Mine in Hegang, which has an annual production capacity of 200,000 metric tons and a deep processing industrial chain.
"Our team is accelerating the research and development of high-end anode materials, nuclear-grade graphite, and graphite for semiconductor applications and other carbon-based materials," said Wang.(By Zhou Huiying)
About CHINA MINING
China Mining Conference and Exhibition (CHINA MINING) is officially supported by Ministry of Natural Resources China. Since first held in 1999, CHINA MINING has become one of the world’s top mining events and one of the world’s largest mining exploration, development and trading platforms, covering all aspects of the whole mining industry chain, including survey and evaluation, exploration and mining, techniques and equipment, investment and finance, trade and services, etc., playing an active promotion role in creating exchange opportunities and enhancing mutual cooperation between domestic and foreign mining enterprises.
With the theme of "Promote Mining Cooperation for a Better Future", the 26th session of China Mining Conference and Exhibition (CHINA MINING 2024) will be held at Tianjin Meijiang Convention Center of Tianjin China on October 15-18, 2024 in a combination of “offline + online”. Relying on the "Cloud Platform for China Mining Conference and Exhibition ", it will provide the industry and the society with 24-hour uninterrupted information services and realize the "never ending" of the event. CHINA MINING 2024 consists of the opening ceremony, keynote session, summit forums, thematic forums, "offline + online" exhibition, VIP tours, ministerial bilateral talks, BOCI night, welcome party, networking dinner, etc. For more information about CHINA MINING 2024, please visit: www.chinaminingtj.org/en/.
