在我们进行球铁实验时,原材料(生铁)中的磷含量很高,有的甚至达0．4%以上,使韧性大大下降。因此必须设法将磷量降低。从金属中去磷可以利用炉渣来进行。磷在铁水中,多是以磷化二铁(Fe2P)的形式存在,当炉渣中碱度相当高时,它是以阴离子PO34-的形式存在。要使磷化二铁还元,即使 In our experiments with ductile iron, the phosphorus content in the raw material (pig iron) was high, some of which was even above 0.4%, resulting in a significant decrease in toughness. Therefore, we must try to reduce the amount of phosphorus. Dephosphorization from metals can be carried out using slag. Phosphorus in molten iron, mostly in the form of iron phosphate (Fe2P) exists, when the slag is relatively high alkalinity, it is in the form of anionic PO34-. To make phosphate iron phosphate still yuan, even