Home / Standards / GB/T 24531-2009 GB/T 24531-2009 Active Iron ores for blast furnace and direct reduction feedstocks - Determination of the tumble and abrasion indices 高炉和直接还原用铁矿石 转鼓和耐磨指数的测定 Standard Type GBT ICS 73.060.10 CCS H31 Status 现行 Issue Date 2009-10-30 Implementation 2010-05-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A