当东南DX7车队到达世界时尚之都意大利米兰,走进米兰世博会中国馆时,此次"一带一路"万里行完美收官1 0月1 9日,东南D X 7车队到达世界时尚之都意大利米兰,走进米兰世博会中国馆,意味着此次"一带一路"万里行完美收官。东南DX7"一带...当东南DX7车队到达世界时尚之都意大利米兰,走进米兰世博会中国馆时,此次"一带一路"万里行完美收官1 0月1 9日,东南D X 7车队到达世界时尚之都意大利米兰,走进米兰世博会中国馆,意味着此次"一带一路"万里行完美收官。东南DX7"一带一路"万里行出色地完成了国际品质检验之旅,印证了卓越的造车品质。"一带一路"万里行是贯彻落实中共中央总书记、国家主席习近平提出建设"丝绸之路经济带"战略构想举办的首个大型系列活动,是目前最具官方代表性,展开更多
In current paper, the effect of different factors on extraction of silver from tailings of lead flotation plant using thiourea leaching was studied. According to the mineralogical studies and chemical analysis taken f...In current paper, the effect of different factors on extraction of silver from tailings of lead flotation plant using thiourea leaching was studied. According to the mineralogical studies and chemical analysis taken from the tailings dam, the representative sample taken from there contained 30 ppm Ag and the minerals such as calcite, dolomite, barite, microcline, galena etc. In this research, the effects of iron(III) sulfate concentration, thiourea concentration, size and temperature onextraction of silver from Ravanj flotation plant tailings were analyzed using statistics design of experiment and DX7 software;and it was determined that iron(III) sulfate concentration and temperature were the most effective factors on the extraction of silver. The results showed that the best recovery obtained in particle size of 75 microns, 1 kg/m<sup>3</sup> thiourea concentration and 1 kg/m<sup>3</sup> iron(III) sulfate concentration in the temperature of 60℃ for 2 hours.展开更多
文摘当东南DX7车队到达世界时尚之都意大利米兰,走进米兰世博会中国馆时,此次"一带一路"万里行完美收官1 0月1 9日,东南D X 7车队到达世界时尚之都意大利米兰,走进米兰世博会中国馆,意味着此次"一带一路"万里行完美收官。东南DX7"一带一路"万里行出色地完成了国际品质检验之旅,印证了卓越的造车品质。"一带一路"万里行是贯彻落实中共中央总书记、国家主席习近平提出建设"丝绸之路经济带"战略构想举办的首个大型系列活动,是目前最具官方代表性,
文摘In current paper, the effect of different factors on extraction of silver from tailings of lead flotation plant using thiourea leaching was studied. According to the mineralogical studies and chemical analysis taken from the tailings dam, the representative sample taken from there contained 30 ppm Ag and the minerals such as calcite, dolomite, barite, microcline, galena etc. In this research, the effects of iron(III) sulfate concentration, thiourea concentration, size and temperature onextraction of silver from Ravanj flotation plant tailings were analyzed using statistics design of experiment and DX7 software;and it was determined that iron(III) sulfate concentration and temperature were the most effective factors on the extraction of silver. The results showed that the best recovery obtained in particle size of 75 microns, 1 kg/m<sup>3</sup> thiourea concentration and 1 kg/m<sup>3</sup> iron(III) sulfate concentration in the temperature of 60℃ for 2 hours.