Impact screen for an impact crusher, impact crusher provided with said impact screen, and crushing facility

Impact shield for an impact grinding mill, said grinding mill containing a horizontal rotor having at an upper end a first link for connecting the impact shield in a pivoting way to a frame of the impact grinding mill, said frame defining a grinding chamber, and, near to an lower end, a second link for connecting the impact shield to adjusting means adapted to pivot the impact shield, said impact shield comprising:

• a plurality of armor bodies of a strongly wear resisting material, said armor bodies being fixed on said impact shield by fixing means making it possible to detach them from the impact shield for their replacement,
• wherein said impact shield is composed of a fixed part connectable to the frame, and a removable part carrying the armor bodies and making it possible to remove simultaneously all the armor bodies fixed on the same, out of said grinding chamber.