钢精炼过程非金属夹杂物演变与控制

朱苗勇, 邓志银

Evolution and Control of Non-Metallic Inclusions in Steel During Secondary Refining Process

ZHU Miaoyong, DENG Zhiyin

表2 1600℃时常见夹杂物与钢液的接触角^[69,70]

Table 2 Contact angles between inclusions and liquid steel at 1600^oC^[69,70]

State	Inclusion	Composition	Contact
		(mass ratio)	angle / (°)
Liquid	CaO-Al₂O₃	36∶64	65
	CaO-Al₂O₃	50∶50	58
	CaO-Al₂O₃	58∶42	54
	CaO-Al₂O₃-SiO₂	44∶45∶11	43
	CaO-Al₂O₃-SiO₂	40∶40∶20	40
	CaO-Al₂O₃-SiO₂	33∶33∶33	36
	CaO-SiO₂	58∶42	29
	CaO-SiO₂	50∶50	31
	CaO-SiO₂	5∶95	47
Solid	Al₂O₃		135
	SiO₂		115
	CaO		132
	MgO		125
	TiN		132
	CaS		87
	MgO·Al₂O₃		134
	CaO·2Al₂O₃		136