... Ball for Ethylene Dryers 1.20 years professional manufacture 2.ISO9001:2008 3.size:3,6,10,13, ... 19,25,38,50mm 99% High Alumina Ball for Ethylene Dryers XINGFENG 99 ... ), it's a very excellent and ideal product for high temperature and steam applications, such as secondary ... °C , also it's a good choice for heat retention or equilibration media. Chemical composition Al2O3Fe2O3MgOSiO2Na2OTiO2 ...