Coal is a fossil that has been subjected to geological action for a long time and contains a certain amount of rare earth elements. When coal is burned, the rare earth elements in it are enriched in the coal ash. Therefore, using coal ash as a raw material to extract high-value rare earth elements can not only produce rare strategic materials, but also effectively solve the problem of low utilization rate of coal ash, a major industrial waste.

The acid leaching method is generally used to extract rare earth elements from coal ash. The coal ash is immersed in strong acids such as sulfuric acid, hydrochloric acid, and nitric acid. The rare earth elements in the coal ash will enter the acid leaching solution in the form of ions. Then, the rare earth elements are separated from the solution by precipitation, solvent extraction, leaching resin, etc.

As experts and scholars at home and abroad continue to deepen their research on fly ash, a series of technologies for extracting valuable elements from fly ash have been developed, which makes it possible to utilize fly ash as a resource. The scarcity of traditional minerals and the rise in raw material prices have also made people see the commercial value of extracting valuable elements such as silicon, aluminum, rare metals, and rare earth metals from fly ash as raw materials.

Suzhou KP Chemical Co., Ltd can provide rare metal oxides such as Lanthanum oxide (La₂O₃), Cerium(IV) oxide (CeO₂), Neodymium oxide (Nd₂O₃), Praseodymium oxide (Pr₆O₁₁), Aluminum oxide (Al₂O₃), Gallium(III) oxide (Ga₂O₃), Indium(III) oxide (In₂O₃), and Germanium oxide (GeO₂). Please contact info@szkpchem.com or 086-18915544907.