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A method of controlling a supply of coolant gas or air (42) to a dry slag granulation system comprising a rotary atomising granulator (44); and a slag collection housing (13) divided into a plurality of zones or chambers(49, 50), e.g. by walls 1-8, the method comprising detecting the height of a slag bed (14, 54) in each zone; detecting the temperature of the slag bed in each zone; determining energy density in the slag bed for each zone; and controlling supply of coolant gas to each zone according to the energy density. The cooled slag may be discharged through the base of the housing. The rate of gas delivery and/or slag discharge may depend in part on the rate of slag input from a blast furnace.
A method of controlling a supply of coolant gas or air (42) to a dry slag granulation system comprising a rotary atomising granulator (44); and a slag collection housing (13) divided into a plurality of zones or chambers(49, 50), e.g. by walls 1-8, the method comprising detecting the height of a slag bed (14, 54) in each zone; detecting the temperature of the slag bed in each zone; determining energy density in the slag bed for each zone; and controlling supply of coolant gas to each zone according to the energy density. The cooled slag may be discharged through the base of the housing. The rate of gas delivery and/or slag discharge may depend in part on the rate of slag input from a blast furnace.
Slag granulation system
MCDONALD IAN JAMES (author)
2016-02-10
Patent
Electronic Resource
English