Home / Standards / GB/T 1509-2016 GB/T 1509-2016 Active Manganese ores—Determination of silicon content—Perchloric acid dehydration gravimetric method 锰矿石 硅含量的测定 高氯酸脱水重量法 Standard Type GBT ICS 73.060.20 CCS D32 Status 现行 Issue Date 2016-10-13 Implementation 2017-09-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A