Active lime production line refers to the production line of active lime. Lime production line is mainly composed of body, crushing cone and suspension transmission device. The machine body is composed of upper, middle and lower parts, which are connected with each other by bolts. There are two rows of high manganese steel lining plates in the upper and middle parts. The lining plates of the middle body are supported on the flange of the machine body. The upper end of the upper body of the lime production line is provided with a groove to block the lining plate, so as to avoid pushing the lining plate out by the upward thrust during crushing.