Abstract：In order to fully control the ringing behavior in magnesian fluxed pellets rotary kiln, two kinds of pellets with basicity of 0.3 and 1.0 were produced in grate- kiln process, respectively. The raw materials properties and production process were analyzed. Also the macrostructure, microstructure and chemical composition of rotary kiln ringing materials were tested. It was shown that the ringing rate in rotary kiln of pellets with the basicity of 0.3 was less than that of pellets with the basicity of 1.0. The ringing materials of pellets with the basicity of 0.3 had compact structure, the main reasons were the high temperature consolidation of powder accumulated and part of the low melting liquid phase. The ringing materials of pellets with the basicity of 1.0 had low strength and layer plate structure, the main reasons were relatively lower calcination temperature, and higher pellet powders rate which were accumulated.
2018, Vol. 28 
