IGNITION METHOD FOR LOWER SUCTION TYPE SINTERING MACHINE

摘要

PURPOSE: To dispose waste plastics which are waste by utilizing a sintered ore producing stage. ;CONSTITUTION: Waste plastic powder 22 having an average grain size of 0.5 to 20.0mm and the max. grain size of ≥30.0m is injected from an injection port of a waste plastic injector 25 installed in the upper part of an ignition furnace 11 of a lower suction type sintering machine and is burned by an ignition burner 12 to ignite the surface layer of a raw material packed bed 5 at the time of igniting the surface layer of the raw material packed bed 5 in the ignition furnace 11. The waste plastic injector 25 is installed adjacently to the ignition burner 12 or a tubular waste plastic injector internally having the ignition burner 12 is preferably used. As a result, the air permeation of the sintered layer is not hindered and a yield is improved even if the waste plastic powder 22 is added to the raw material packed bed. Disposition of the waste plastic of which incineration and reclamation are difficult is thus made possible.;COPYRIGHT: (C)1996,JPO