... :Ferrosilicon powder: 75# , 72#Ferrosilicon briquette : 75# , 72# , 65# , 60# ,50#Water atomization Ferrosilicon . NormsThe main chemical composition (%)SiAlCSP%(min) %(max ... .020.04751.5-2.00.200.020.04Ferrosilicon 72#721.50.200.020.04721.5-2.00.200.020.04Ferrosilicon 65 ... #652.00.200.020.04Size (lump)10-50mm, 50-100mm, 10-100mm, 50-150mm, 90%min,or at customer’s option;Size ...