A kind of leaching solution for ionic rare earth ore and its application method
An ionic rare earth ore and rare earth ore technology, applied in the direction of improving process efficiency, can solve the problems of heavy metal activation, heavy metal pollution, etc., and achieve the effect of strong chelating ability, easy regeneration and reuse, and reducing residues
Active Publication Date: 2019-12-27
CHINA UNIV OF GEOSCIENCES (BEIJING)
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Problems solved by technology
[0006] The purpose of the embodiments of the present invention is to provide a leaching solution for ionic rare earth ore, to solve the problem that the existing leaching solution will cause the activation of associated heavy metals, and the heavy metals remaining in the ore body will pollute the environment ; Not only improves the extraction efficiency of rare earth and heavy metals, but also has better economy, and can reduce the harm to the environment
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Embodiment 1
[0032] Influence of Compounding EDTA and Ammonium Sulfate on La / Pb Desorption
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The embodiment of the invention discloses ore leaching liquid for ionic rare earth ore. The ore leaching liquid comprises ammonium sulfate and EDTA. The ore leaching liquid is used for solving the problems that the conventional ore leaching liquid can cause associated heavy metal activation and heavy metal remained in the ore pollutes the environment; the extraction efficiency of rare earth and heavy metal is improved, excellent economic property is achieved, and harm to the environment can be reduced.
Description
technical field [0001] The invention relates to the technical field of rare earth ore mining, in particular to an ore leaching solution for ionic rare earth ore and a method for using the same. Background technique [0002] The rare earth elements in the formation mainly exist in the following three forms: (1) a single rare earth mineral in the ore, such as bastnaesite, monazite, and xenotime; (2) the rare earth element combines calcium, barium, strontium, etc. After component replacement, it exists in rock-forming minerals and other metal and non-metal minerals; (3) Rare earth ions are adsorbed on the surface of clay minerals or between crystal layers to form ionic rare earth ores. [0003] my country is the country with the richest rare earth resources in the world, with large reserves and high output. The north is dominated by single rare earth minerals, while the south is dominated by ionic rare earth minerals. Among them, ionic rare earth ore is a new type of exogenou...
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IPC IPC(8): C22B3/14C22B59/00
CPCC22B3/14C22B59/00Y02P10/20
Inventor 薛强唐杰乔继扬
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)