Enhancement of Xanthate Adsorption on Cerussite Surfaces by Pb(II) Activation and Its Effect on Floatability.

Cerussite is a lead oxide mineral resource that is typically enriched through sulfidization flotation. The surface sulfidation degree and the high solubility of cerussite strongly affect the flotation ability of cerussite. In the current work, lead ions were used to pretreat cerussite to intensify its sulfidization flotation.

Wavelength extension and power improvement of red Pr:YLF lasers.

High-power red lasers (mainly at 639 and 670 nm) based on Pr:YLF crystals have been presented in many works. However, the spectral resources of Pr:YLF in the red region have not been fully developed to obtain lasers due to their relatively low emission cross sections and the irrepressible strong emission at ∼639 nm. In this work, we propose a scheme to further develop the spectral resources of Pr:YLF in the red region and improve the red laser powers based on this crystal.