Conversion of Mill Scale Waste into Valuable Products via Carbothermic Reduction

Table 7

Experimental series according to variation of the flux materials and chemical composition of the castable metal (using coke as reducing agent).

Series	Fluxing materials, gm		Chemical analysis of produced metal, wt%
	With charge (CaO)-(CaF2)	In mould	C	Si	Mn	S	P
3.1	—	—	3.46	0.356	0.217	0.128	0.0241
	(400)-(100)	—	3.84	0.079	0.437	0.053	0.0153
	(600)-(150)	—	3.65	0.725	0.649	0.0162	0.0216
3.2	(200)-(50)	(CaO)-(CaF2); (200)-(50); (80%)-(20%)	3.37	0.300	0.26	0.118	0.0181
	(200)-(50)	(CaSi); (250)	3.49	1.11	0.549	0.060	0.0211
	(200)-(50)	(CaO)-(CaF2)-(FeSi)-(C); (157)-(31)-(31)-(31); (62.5%)-(12.5%)-(12.5%)-(12.5%)	3.42	0.679	0.57	0.085	0.0185
	(200)-(50)	(CaO)-(CaF2)-(Al2O3); (38)-(137)-(75); (15%)-(55%)-(30%)	3.66	0.502	0.524	0.103	0.0234
	(200)-(50)	(Na2CO3); (250)	3.59	0.601	0.493	0.109	0.0238
3.3	(400)-(100)	(CaO)-(CaF2); (200)-(50); (80%)-(20%)	3.62	0.855	0.604	0.0107	0.0229
	(400)-(100)	(CaSi); (250)	3.61	1.92	0.60	0.0028	0.0199
	(400)-(100)	(CaO)-(CaF2)-(FeSi)-(C); (157)-(31)-(31)-(31); (62.5%)-(12.5%)-(12.5%)-(12.5%)	3.59	0.973	0.650	0.0174	0.0241