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28-roll tandem consisting of seven sets of four-roll mills.
The first mill is an all-steel Farrel kingboltless housing
with 41" x 84" rolls and 19" x 26" journals.
This first mill is driven through three enclosed Lufkin gear
boxes by a 1,200 hp. single-stage Terry steam turbine. The
second mill is an all-steel D.B.R. kingboltless housing with
40" x 84" rolls and 18" x 24" journals.
The second mill is driven through all steel gears by a 1,200
hp. single-stage Terry steam turbine. The third mill is an
all-steel D.B.R. kingboltless housing with 40" x 84"
rolls and 18" x 24" journals. The third mill is
driven through all-steel gears by a 1,500 hp. multi-stage
Terry steam turbine. The fourth mill is an all-steel D.B.R.
kingboltless housing with 39" x 84" rolls and 18"
x 24" journals. The fourth mill is driven through all
steel gears by a 1,200 hp. single-stage Terry steam turbine.
The fifth mill is an all-steel D.B.R. kingboltless housing
with 41" x 84" rolls and 18" x 24" journals.
The fifth mill is driven through all steel gears by a 1,200
hp. single-stage Terry steam turbine. The sixth mill is an
all steel D.B.R. kingboltless housing with 41" x 84"
rolls and 18" x 24" journals. This mill is driven
through all steel gearing by a 1,000 hp. multi-stage Terry
turbine. The seventh mill is a Simisa housing with 53”
x 95” rolls and 23.6” x 28.5” journals.
The seventh mill is driven through enclosed Falk gear boxes
by 2,000 hp. Multi-stage Terry steam turbine.
R.J. Tricon rubber belt Donnelly chutes are installed on
all mills except number seven. A Donnelly chute was installed
in 1993 on the sixth mill, three Donnelly chutes were installed
on the first mill, the fourth mill, and the fifth mill in
1994. The second and third mill Donnelly chutes were installed
in 1995. All mills were installed with by-passes in 1995.
The grooving on the first three mills is 3" pitch and
the last four are 2" pitch. A 78" x 78" Eriez
magnet is supported 16" over the first Donnelly chute
rubber belt carrier is used to remove most of the tramp iron
entering the mill tandem. All mill and knife turbines are
equipped with Woodward governors.
Installed a new imbibition system in 1995 consisting of four
ss 36" diameter tanks and four 6" by 6" Wemco
chokeless pumps. This system will allow us to use total compound
imbibition on the entire mill tandem.
To facilitate work on the mill, we have four electric-operated
steel traveling cranes with 40' span and double trolley length
of 150', along with two 20 ton hoists, two 12-ton Yale electric
hoists, and two 10 ton electric hoists.
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