摘要
为了确定钢液炉外精炼过程中加入钙使Al2O3夹杂物变性或与硫生成CaS的条件,通过热力学计算得出了1 600℃和1 550℃时Fe-Al-Ca-O-S系的平衡图。在CaO-Al2O3熔体组成,钢液中铝、硫和氧的活度以及钙的蒸气分压这5个变量中,只需知道其中两个变量,由此图就可直接查出与之平衡的其余3个变量。
In order to determine the conditions under which the added calcium in secondary refining process can form CaS or modify Al2O3 inclusions, the equilibrium diagrams for the Fe-Al-Ca-O-S system at 1 600 ℃ and 1 550 ℃ were obtained by means of thermodynamic calculation. If two variables of the five variables the composition of CaO-Al2O3 melt, the activities of Al, S and O in molten steel and the partial pressure of Ca two variables are known, the others which are in equilibrium with them could be found out immediately from this diagram.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2005年第5期39-42,共4页
Journal of Iron and Steel Research
关键词
平衡图
夹杂物变性
脱硫
钢液
炉外精炼
quilibrium diagram
inclusion modification
desulfurization
molten steel
secondary refining
