Abstract: For treating the raw coal containing a high proportion of intermediate-density materials with the use of conventional intelligent two-product dry separator, it is liable to result in waste of coal resource and cutdown of economic income of coal preparation plant. To cope with this situation, a novel intelligent three-product dry separator is developed based on the two-product version. The separator features the use of a CCD camera, and an X-ray and image combined identification system instead of the traditionally used simply X-ray system, the face fabric for the large belt-type double-split feed coal distributor, and double-row array nozzles with distinctively differential blowing forces. Verification test on its performance shows the clean coal, middling and reject can be effectively identified with an identification rate for each material being over 90%, the coal distributor can work with a satisfactory result, and the use of the special nozzles can lead to a much higher separation precision, basic consistency with recognition accuracy. Compared with the two-product version, the use of the three-product separator developed works remarkably well for its possibility to fully meet the required calorific values of clean coal and reject, and recover a certain amount of middling product.