Application of adsorption.Due to their unique physical and chemical properties, rare earths are the core components of wind turbines, batteries, electric car engines, communication equipment and many high-tech fields, and industrial demand is rising dramatically.SourceRare earth magnet-https://www.rare-earthmagnet.com/show/8537.html

 SourceRare earth magnet-https://www.rare-earthmagnet.com/show/8537.html

China is a major producer of rare earths, but the over-exploitation of rare earths has led to the reduction of reserves, uneven distribution of rare earths, high radiation of associated ores and difficulty in utilization, etc. It has become urgent to expand the sources of rare earths and improve the separation efficiency of rare earths. The new rare earth sources mainly include associated mine tailings, brine, bauxite slag, fly ash and electronic waste, etc. The total amount and variety of rare earth elements in these sources are large.SourceRare earth magnet-https://www.rare-earthmagnet.com/show/8537.html

 SourceRare earth magnet-https://www.rare-earthmagnet.com/show/8537.html

It is of great economic value to enrich, recover and utilize rare earth metals from new rare earth resources. However, the concentration of rare earth elements in new resources is usually low, for example, the concentration of rare earth elements in solutions obtained by leaching is often at the ppm level; in addition, there are many other non-rare earth metal elements in these rare earth resources, for example, in the separation of rare earth elements from bauxite tailings, fly ash and mining brine, the acidic solutions usually contain high concentrations of Al~(3+), Ca~(2+) The acidic solution usually contains high concentrations of Al~(3+), Ca~(2+), Fe~(3+) and Mg~(2+) metal ions.SourceRare earth magnet-https://www.rare-earthmagnet.com/show/8537.html

 SourceRare earth magnet-https://www.rare-earthmagnet.com/show/8537.html

These pose a great challenge for the recovery and utilization of different rare earth metals from alternative rare earth resources. The industrial enrichment and separation of rare earth elements are mainly carried out by liquid-liquid extraction, which has a relatively high purity of rare earth elements and basically meets the technical requirements, but has many problems such as complex process, waste liquid generation, and environmental unfriendliness. In contrast, solid-phase adsorption is an important tool for the selective separation of rare-earth elements at low concentrations because of its relatively high separation efficiency, simple process and environmental friendliness, but its difficulty and core lies in the design and preparation of highly efficient solid adsorbent materials.SourceRare earth magnet-https://www.rare-earthmagnet.com/show/8537.html

 SourceRare earth magnet-https://www.rare-earthmagnet.com/show/8537.html