A pilot project containing rare earth reached the international advanced level

Recently, the Beijing General Research Institute of Mining and Metallurgy responsible, and Guizhou Jinlin Chemical Co., Ltd. and Guizhou University to complete the "low-grade phosphate rock containing rare earth enrichment and separation of industrial test" project through the Science and Technology Department of Guizhou Province scientific and technological achievements identification, research results reached the international advanced level.

Identification of the Committee examines the industrial test site, listened to project completion reporting unit, review the relevant information, and on related technical problems and answering questions. Group spoke highly of the project's research work, agreed that low-grade phosphate rock containing rare earth separation and enrichment Industrial Test results reached the international advanced level, agreed to adopt scientific and technological achievements.

Project developed with independent intellectual property rights associated selective enrichment of rare earth phosphate concentrate separation technology, for the first time using phosphoric acid phosphorus associated rare earth concentrates, additives achieved without adding rare earth and under the conditions of phosphorus, calcium effectively separated by leachate the use of renewable loop to achieve the production of phosphoric acid and comprehensive recovery of rare earth organic convergence; built the annual processing 10,000 tons of industrial test line, the device is stable, reliable indicators; phosphoric acid leaching process, phosphorus leaching rate of more than 95% of rare earth-rich slag set 83%, greater than 55% recovery of rare earth, rare earth oxide content greater than 50%, gypsum quality has been significantly improved project implementation process to obtain two national invention patents.

By Associated rare earth phosphate in the comprehensive recycling, open up new sources of rare earths, easing the south of the heavy rare earth rare earth ion adsorption resource dependency of our country's rare earth resources useful complement existing industrial tests carried out smoothly for the next construction equipment industry to provide technical support for the world's rare earth containing the same type of comprehensive development and utilization of phosphate rock provides a role model.


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