Complete melting at 4% CaO
For high silica-alumina ash in entrained flow gasification, CaO addition enables complete melting at 1400°C and accelerates dissolution, aiding slag discharge for coals with high ash fusion temperatures.
Zhang, Haigang · Shen, Zhongjie · Lihong, Yu · Junjie, Liu · Guo, Xiaolei · Liu, Haifeng
Chemical Engineering Journal 2024
Initial melting temperature around 1270°C
Difficult to achieve complete melting at 1400°C
Complete melting at 4 wt% CaO addition
Melting rate increased with increasing temperature or decreasing particle size