Technical data

CHAP-03 BRIEF SYSTEM DESCRIPTION Page 14 of 20
5 BF sinter return fines - 8 mm +8mm (5% max.)
6 Flue dust - 1 mm +1mm (5% max.)
03.04.02 ADDITIONS/ MODIFICATIONS AND UPGRADATION IN EXISTING
RAW MATERIAL PREPARATION SYSTEM
03.04.02.01 EXISTING FUEL crushing and screening facility
There is a provision of covered storage for coke breeze received from
blast furnace adjacent to coke crushing and screening building. The
coke breeze is reclaimed by front end loaders and conveyed to coke
crushing and screening building through series of conveyors C101,
C102, C103, C104, C105 and finally C106. The coke breeze gets
crushed by 2 roll crusher to -10 mm from -25mm size and subsequently
screened by Mogensen sizer. +3mm output from the sizer is
conveyed to coke grinding building by conveyor C111and discharged
onto reversible conveyor C112. Conveyor C112 discharges into 2 nos.
surge bins from where belt feeders extracts material and feeds to rod
mill (2 nos.) where it gets crushed to -3mm. (-)3 mm size from crushing
and screening building is directly conveyed and discharged onto
conveyor C114 through conveyors C110 and C113 ,which in turn
discharges to conveyor C 115.
03.04.02.02 Existing FLUX crushing and screening facility
Limestone and dolomite required for the existing machine of Sinter Plant
III is drawn from bunkers of flux proportioning building and conveyed by
conveyor 105 to surge bin of existing flux crushing building. The material
is discharged onto reversible shuttle conveyor L106 from where it is
discharged onto bins. The material is withdrawn by vibratory feeder and
fed to primary hammer mill (3 nos.) of 250tph capacity. From the
hammer mills the crushed flux is conveyed by conveyors L109, L110 and
L111 onto secondary hammer mills (3 nos.) These three conveyors carry
crushed flux to flux screening building and discharge into surge bins(3
nos.). Material is withdrawn from each of the two openings by traveling