During the in situ leaching process of ion-adsorption rare earths, solution needs to be constantly injected mine slopes. As a consequence, landslides are highly likely occur due increasing water level soil mass. To solve this problem, we conducted mechanical analysis on rising after injection, which shed light principle slope instability brought about by level. With variation as major factor, e...

The presence of aluminum in the weathering crust leaching rare earth ore harms subsequent extraction and separation earths. High-quality production processes must reduce content their feed liquid. Groups containing lone pairs electrons can form stable insoluble complexes with metal ions under certain conditions. In this paper, 3-hydroxyphenylphosphoryl propionic acid is used to selectively sepa...

THE discovery of a new drug, terra Silesiaca, in the sixteenth century and the publicity and experimentation that were a part of marketing it provide an interesting insight into the medical practice and the pharmaceutical trade of that period. Various earths had long been used in medicine as alexipharmics, astringents, and absorbents. In the first century AD, Dioscorides and Pliny the Elder des...

J. G. He, Y. Li, X. X. Xue, H. Q. Ru, H. Yang School of Material and Metallurgy, Northeastern University, Shenyang, Liaoning, China. X. W. Huang National Engineering Research Center for Rare Earth Materials, General Research Institute for Nonferrous Metals, and Grirem Advanced Materials Co., Ltd., Beijing, China In this paper the removal of fl uoride from fl uoride-bearing cerium sulfate soluti...

We report the discovery of resolved magnetically split lines in two chemically peculiar stars, the SrEuCr star HD 92499 and the Bp SiCr star HD 157751. From FEROS spectra, we have measured a mean magnetic field modulus of 8.5 kG for HD 92499 and a mean magnetic field modulus of 6.6 kG for HD 157751. Both stars have small projected rotational velocities: v sin i = 3.0 km s −1 and 8.5 km s −1 , r...

Systematic parameter survey calculations were performed to investigate basic characteristics (burnup reactivity loss, Doppler coefficient, sodium void reactivity , control rod worth , power distribution, transmutation rate, breeding ratio etc.) of an LMFBR core loaded with minor actinide (MA) fuels which contain rare earths (RE) and a}so to establish MA and RE loading method which has no seriou...