Jiangxi Yichun Hezong Lithium Technology Co., Ltd. announced on the 17th that the company’s completed lepidolite fluoride-fixed reconstruction comprehensive extraction lithium carbonate project passed the Jiangxi Provincial Committee last week The key new product identification organized by the Department of Science and Technology is currently building a continuous pilot production line and plans to put it into production in the second half of the year. The new process has outstanding cost advantages, strong innovation, environmental protection and practicality. It solves the key technical problem of low-cost and efficient comprehensive utilization of lepidolite, and provides an effective way for the development of the lithium battery new energy industry.
This new technology developed by the team of Professor Li Xinhai of Central South University and Hezong Lithium Industry Company is the first to use high and low temperature twice mineral phase reconstruction technology in the process of extracting lithium from lepidolite. , improves the reconstruction effect, avoids pressure leaching, and has a high alkali metal leaching rate. This achievement uses recycled lithium carbonate to remove calcium, eliminating the cost of using sodium carbonate. At the same time, it uses a hydroxide system, which is conducive to directly obtaining battery-grade lithium carbonate. The technology is at the internationally advanced level.
It is understood that the project was established in 2008. After nearly three years of joint research, the scientific researchers conducted repeated industrial research tests and pilot tests in Hunan and Jiangxi, and finally succeeded. Produce qualified battery gradelithium carbonate. The product has been tested by national authoritative institutions, and all technical indicators have reached and exceeded industry standards. It has been used by many lithium battery material companies in Hunan, Jiangxi and other places and has received good feedback. Its performance can fully meet the technical requirements for the production of lithium-ion battery cathode materials.
According to reports, the fluorine fixation technology in lithium mica ore can make the fluorine and calcium fluoride in lepidolite ore remain in the slag in solid form, preventing the release of hydrogen fluoride gas during high-temperature roasting from corroding equipment and polluting the environment. The mineral phase reconstruction and controlled metathesis technology of lepidolite ore converts lithium and other alkali metals into water-soluble chlorides, avoiding the reaction of chlorine ions and oxygen ions in the material to produce chlorine gas and react with water to release fluorphlogopite. The release of hydrogen chloride gas causes equipment corrosion and tail gas pollution.
It is also understood that lithium is known as the clean energy of the 21st century and has become the driving force for the advancement of automobiles together with oil. Lithium nuclear fusion technology is a key area of current nuclear energy research. Once basic zinc carbonate is obtained, the energy generated by the same amount of lithium will be several times that of uranium. For this reason, more and more countries have positioned lithium as a national strategic material as important as oil. Battery-grade lithium carbonate products are raw materials for key materials in lithium-ion batteries and will have broad industrialization prospects.
Information source: China Chemical Industry News
