Rare earth metals are important today, especially for heavy rare elements (HREEs). Dy and Yb, included in the HREE group, widely used permanent magnets sensors. On other hand, accumulated solid waste of zircon tailings is an environmental issue mineral processing. Valuable minerals such as (REEs) also remain tailings. This study aims to determine optimum conditions experimental parameters obtai...

Bacterial leaching is the extraction of metals from their ores using microorganisms. The most important player in the bioleaching process is. 4 Bacterial Attachment on Mineral Surfaces 200. 5 Microbial Diversity in Bioleaching Environments 200. Minerals are obtained using a leaching process.greater understanding of the mechanism of bacterial leaching of sulphide minerals. This latter process wh...

Upon rewetting, lichens lose polyols through leaching. We quantified leaching losses for 21 species under simulated rainfall. Polyol concentrations in these lichens range from 1.0 to 8.8%, with a mean of 2.8%. Leaching losses range up to about 7.5 mg (polyol)/g (lichen dry weight) in a typical rain event. The rate of polyol leaching declines exponentially, becoming negligible within 1 hour of c...

In this work, Si-Ca-Mg alloys were made with different compositions and solidification conditions to investigate the impurity segregation separation performance from Si, especially for crucial P at several ppmw levels. Varying acid leaching parameters also employed optimized process window. Results indicate that novel alloying-leaching system is valid high extraction. The ternary intermetallic ...