Solved 1. Trap rock is crushed in a gyratory crusher. The
WEBChemical Engineering questions and answers. 1. Trap rock is crushed in a gyratory crusher. The feed is nearly uniform 2in. spheres. The differential screen analysis of the product is given in column (1) of Table The power required to crush this material is 400 kW/ ton. Of this 10 kW is needed to operate the empty mill.