The invention relates to an active lime production plant for rotary kilns, which comprises a coal powder preparation part, a limestone preheating and calcining part, a finished product screening, storage and transportation part and a dust removal part, wherein a quantitative coal feeder in the coal powder preparation part is communicated with a high-efficiency high-fineness ball mill through a hot blast heater; the high-efficiency high-fineness ball mill is communicated with a coal-milling dynamic powder selector; the coal-milling dynamic powder selector is communicated with a powder collector; a coal powder bin is arranged below the powder collector; a powder screening machine and a limestone powder bin in the limestone preheating and calcining part are communicated with a rotary kiln; and the finished product screening, storage and transportation part is provided with a finished product powder bin and a finished product block bin. The invention can use high-quality soft coal, blind coal, low-quality soft coal, the mixture thereof or any other low volatile coal as the calcining fuel.