However, due to indiscriminate mining and the use of backward pond leaching technology, the recovery rate is less than 30%, resulting in serious waste of resources, failure to fully utilize the value

However, due to indiscriminate mining and the use of backward pond leaching technology, the recovery rate is less than 30%, resulting in serious waste of resources, failure to fully utilize the value of comprehensive utilization, and also causing environmental pollution. Efforts to improve and comprehensively promote new in-situ leaching technology, ionic rare earth smelting technology and equipment are the top priority for the development and utilization of ionic rare earths to enter a healthy development stage. More than 90% of my country's total rare earth ore is concentrated in the Bayan Obo Mine in Baotou. The endogenous light rare earth iron deposit in Bayan Obo is a multi-element primary ore containing iron, rare earths, thorium, niobium, manganese, phosphorus, fluorite, etc. . The currently mined East Mine is poor in iron (grade 34) and rich in rare earths (grade 5). The utilization rate of rare earths is only about 10. A large amount of rare earths are stored in the tailings pond, with about 10 million tons of rare earth oxides (REO). The northern rare earth mines represented by the Bayan Obo raw ore should focus on the research on combined smelting and separation technology of niobium, zirconium and rare earths, clean production of rare earth oxides and comprehensive resource recycling technology, and propose reasonable, feasible, economical and environmentally friendly solutions. Smelting process.