The dissolution behavior of lime particles in CaO?FeO?SiO2?P2O5 slag at 1400℃ was studied by putting the average size about 70 ?m lime into the CaO?SiO2 saturated slag. The results showed that six areas were formed along calcium oxide around after the lime particles were adding into the slag, namely unmelted calcium oxide region, transition layer of lime dissolution transformation to calcium ferrite, calcium ferrite layer, discontinuous solid solution layer, dense solid solution layer and original slag. The C2S?C3P solid solution was formed in 5 s, its P2O5 content reached the maximum about 120 s, then the size of solid solution increased and P2O5 content decreased with time. When P2O5 was in slag, the xC2S?C3P layer was formed in the reaction interface of lime, instead of C2S, the formation of C2S?C3P solid solution layer prevented the dissolution of lime.
Yunjin XIA Xiaopan LI Jie LI Dingdong FAN Xin GUO
. Dissolution Behavior of Lime Particles in CaO-FeO-SiO2-P2O5 Slag[J]. The Chinese Journal of Process Engineering, 2017
, 17(5)
: 1041
-1046
.
DOI: 10.12034/j.issn.1009-606X.217121
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