Mining technology of rare earth ore

Rare earth minerals exist mainly in the form of minerals in the earth's crust, and there are three main states of occurrence: as the basic constituent elements of minerals, rare earths are present in the mineral lattice in the form of ionic compounds, which constitute an essential component of minerals. Such minerals commonly referred to as rare earth minerals such as monazite, bastnaesite like. As the impurity element minerals to isomorphous replacement form, dispersed in a rock-forming minerals and mineral rare metals, rare earth element containing these minerals can be called minerals, such as apatite, fluorite and the like. It is adsorbed on the surface or particles of some minerals in an ionic state. These minerals are mainly various clay minerals and mica minerals. Rare earth elements in this state are easily extracted.

Commonly used rare earth mining technology

The technology of ionic rare earth is the independent intellectual property right owned by China. The Zhangzhou Nonferrous Metallurgy Research Institute is the main unit for the discovery and naming of ion-adsorbed rare earth minerals in China and the scientific and technological achievements of the second-generation rare earth extraction process. At the time, he was appointed as the deputy director of the research and the post of director of the Zhangzhou Nonferrous Metallurgy Research Institute. As the main participant and leader of the invention and application of the second generation extraction process of ionic rare earth ore, the historical development of this event. Have an unforgettable memory. In response to the reporter's covenant, Comrade Ding Jiaxuan made a comprehensive and systematic review and summary of this historical event.

In 1970, in the past 175 years of development and utilization of rare earth mineral resources, it was found that there are as many as 200 minerals containing rare earth elements and their compounds in nature. However, there are only a few rare earth mineral raw materials that actually have industrial use value, and the number is about ten. There are monazite, cerite, bastnaesite, gadolinite, xenotime, allanite, niobium xenotime, euxenite. But these minerals containing a certain amount of most of uranium or thorium, and rare earth minerals are solid, mineral mineral phase states exist, they are often associated with a radioactive element or a symbiotic.

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