Optimal Dearsenification Parameters of Gold Sulfide Concentrate with a High As Content

The gold sulfide concentrate with a high As content in Liangshan District, Sichuan Province, China, is a potentially important resource. This paper describes experiments of dearsenification of gold concentrate in a weakly reduced atmosphere in a rotary pipe furnace. The results showed that the optimal parameters were a temperature range of 650-700℃, 15%-16% CO2 of gas and a reaction time of 30-40 min. The removal rate of arsenic and sulfur was over 95% and 25%-28%, respectively. With further oxidization and roasting, residue sulfur in the roasted materials was dropped to below 4%, and the cyanide leaching recovery of gold was over 92%.

Hydrogen sulfide protects against high glucose-induced H9c2 cardiomyocyte injury and inflammatory response by inhibiting ROS-TLR4 pathway

Objective To investigate whether exogenous hydrogen sulfide（H2S）protects high glucose（HG）-inducedH9c2 cardiomyocyte injury and inflammation response by inhibiting reactive oxygen species（ROS）-Toll-like receptor 4（TLR4）pathway.Methods Cell counter kit-8（CCK-8）assay was used to measure the cell viability,