The invention relates to the field of primary crushing of needle
coke (green
coke), and particularly relates to a primary crushing method of
coal-series needle
coke. The primary crushing method is characterized in that a multi-cone hammer head is driven by a full-
station mechanical arm provided with an impaction hammer to
impact and crush
tower-discharged green coke in a
free state. The multi-cone hammer head is in an integrated structure, a
drill rod is arranged at one end of the multi-cone hammer head, and a crushing head is arranged at the other end of the multi-cone hammer head and is provided with circular
conical teeth and square
conical teeth. Compared with the prior art, the primary crushing method of
coal-series needle coke and the device adopted by the method, disclosed by the invention, have the following advantages that: (1) the problem of device appearance selection of large or ultralarge crushed material in the
coal-series needle coke (the
tower-discharged green coke) is solved, and the investment of a crushing device is reduced largely; (2) an impaction crushing manner is suitable for anisotropic structure characteristics of the needle coke, and is also beneficial for improving the quality of the needle coke; (3) high-efficiency transmission of impaction energy is ensured and the crushing work efficiency is improved due to a unique structure of the multi-cone hammer head; and (4) the full-
station (in a three-dimensional space and five freedom degrees) mechanical arm meets
station requirements during operation and is convenient to capture objects to be hammered.