Rutile (TiO2) is heavily used in pigments mid colormlts, mid the most abundmlt source of rutile is ilmeinte. Upon oxidation of ilmeinte, mtile cml be formed wiffl modest energy consumption; furfflermore, after leach...Rutile (TiO2) is heavily used in pigments mid colormlts, mid the most abundmlt source of rutile is ilmeinte. Upon oxidation of ilmeinte, mtile cml be formed wiffl modest energy consumption; furfflermore, after leaching, only a few byproducts are formed. Unfortunate- ly, one drawback is file necessarily long oxidative process of typically used mefflods. In fflis study, we show fflat a fluidized bed reactor cml be used to oxidize ilmeinte ore to rapidly form ruffle mid pseudobrookite (Fe2TiOs) phases. Ilmeinte was oxidized wiffl 5vo1% 02 in Ar at temperatures of 1173 K or 1223 K mid subsequently leached using a diluted H2SO4 solution to dissolve file pseudobrookite phase. The effects of acid concentration, temperature, mid cooling rate after oxidation were investigated. We show fflat file ilmeinte was rapidly oxidized to form rutile mid pseudobrookite phases at 1173 mid 1223 K in a 5vo1% O2/95vo1% Ar environment wifflin 40 min. The fmal maximum mtile yield was 84.2mo1% after leaching in (1 + 1) H2SO4 solution at 393 K for 12 h.展开更多
2015年8月26-28日,上海发那科机器人有限公司将携点焊、喷涂、装配及激光切割四套高效机器人解决方案亮相海国际汽车制造技术及装备材料展。FANUC两款点焊机器人主力机型R-1000i A和R-2000i C具有高速、智能、紧凑等特点,配合FANUC i RV...2015年8月26-28日,上海发那科机器人有限公司将携点焊、喷涂、装配及激光切割四套高效机器人解决方案亮相海国际汽车制造技术及装备材料展。FANUC两款点焊机器人主力机型R-1000i A和R-2000i C具有高速、智能、紧凑等特点,配合FANUC i RVision视觉系统、伺服定位装置、视觉电极帽检测和学习减振等多种智能功能,能大幅提高焊接稳定性并缩短系统生产节拍,使点焊作业更智能化。展开更多
本文介绍了GE Fanuc的PAC System RX7i系统在济钢1700mm中薄板坯热连轧带钢生产线中的应用。作者概述了热连轧工艺对控制系统的要求,强调了其高精度、连续性、高速控制和高速通讯的特点,详细阐述了系统的构成和主要功能。投产后,该...本文介绍了GE Fanuc的PAC System RX7i系统在济钢1700mm中薄板坯热连轧带钢生产线中的应用。作者概述了热连轧工艺对控制系统的要求,强调了其高精度、连续性、高速控制和高速通讯的特点,详细阐述了系统的构成和主要功能。投产后,该系统运行稳定,功能正常,是该热连轧生产线获取巨大经济效益的可靠保证,具有良好的推广应用价值。展开更多
基金Financial support was given by the Grants-in-Aid for Challenging Exploratory Research(No.26630374)in 2014–2015,Japan Society for Promotion of Science(JSPS)
文摘Rutile (TiO2) is heavily used in pigments mid colormlts, mid the most abundmlt source of rutile is ilmeinte. Upon oxidation of ilmeinte, mtile cml be formed wiffl modest energy consumption; furfflermore, after leaching, only a few byproducts are formed. Unfortunate- ly, one drawback is file necessarily long oxidative process of typically used mefflods. In fflis study, we show fflat a fluidized bed reactor cml be used to oxidize ilmeinte ore to rapidly form ruffle mid pseudobrookite (Fe2TiOs) phases. Ilmeinte was oxidized wiffl 5vo1% 02 in Ar at temperatures of 1173 K or 1223 K mid subsequently leached using a diluted H2SO4 solution to dissolve file pseudobrookite phase. The effects of acid concentration, temperature, mid cooling rate after oxidation were investigated. We show fflat file ilmeinte was rapidly oxidized to form rutile mid pseudobrookite phases at 1173 mid 1223 K in a 5vo1% O2/95vo1% Ar environment wifflin 40 min. The fmal maximum mtile yield was 84.2mo1% after leaching in (1 + 1) H2SO4 solution at 393 K for 12 h.
文摘2015年8月26-28日,上海发那科机器人有限公司将携点焊、喷涂、装配及激光切割四套高效机器人解决方案亮相海国际汽车制造技术及装备材料展。FANUC两款点焊机器人主力机型R-1000i A和R-2000i C具有高速、智能、紧凑等特点,配合FANUC i RVision视觉系统、伺服定位装置、视觉电极帽检测和学习减振等多种智能功能,能大幅提高焊接稳定性并缩短系统生产节拍,使点焊作业更智能化。
文摘本文介绍了GE Fanuc的PAC System RX7i系统在济钢1700mm中薄板坯热连轧带钢生产线中的应用。作者概述了热连轧工艺对控制系统的要求,强调了其高精度、连续性、高速控制和高速通讯的特点,详细阐述了系统的构成和主要功能。投产后,该系统运行稳定,功能正常,是该热连轧生产线获取巨大经济效益的可靠保证,具有良好的推广应用价值。