Method for dehydrating a mixed dust slurry
AssigneesSumitomo Heavy Industries, Ltd., Sumitomo Metal Industries, Ltd.
InventorsIzumi Arai, Yasuteru Yamada, Akio Mutsuta, Kenji Kadota
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Abstract
A method is disclosed for feeding a constant amount of filter cake to a dryer thereby producing dried powder having a predetermined moisture content so that materials of uniform quality are fed at a constant rate to the stages subsequent to the dryer in a pelletizing system of the iron and steel industry.
Claims6
In a method for dehydrating a dust-containing slurry mixture of a blast furnace slurry and a converter slurry collected in iron and steel works to produce a filter cake and feeding the filter cake thus produced to a stage for recovering dust, the slurry mixture being fed to a rotary type belt filter for dehydration, the steps of maintaining the solid dust concentration of the mixture within a range of 35% to 45%, by weight, before the mixture is fed to the filter such that the moisture content of the filter cake produced on the filter is kept substantially constant at about 30% by weight regardless of variations in the rotational speed of the filter.
Dependencies are inferred from the claim text.