The lime industry is using rotary kilns especially for the flexibility of this production tool. The energy efficiency of rotary kilns was along the time improved, especially with the development of shaft or vertical preheaters.
Practical experience shows that operators of rotary lime kilns face several challenges:
Rotary kilns equipped with vertical preheaters have to be frequently stopped since the preheaters are clogging for reasons that were until now unexplored and often considered as unavoidable. These stops trigger operational costs (cooling down of the kiln, cleaning of the...