pa1778data.pdf

VII. Iron Purification and Delivery Facilities:
U.S. STEEL DUQUESNE WORKS
HAER No. PA-115
(Page 65)
A. Calcium Carbide Silo and Dispensers: The 220-ton calcium
carbide silo sits on a concrete pad located near the shoreline of
the Monongahela River, just east of the iron de-sulfurization
building. Located directly below the 20*-0" diameter x 35'-0"
high silo are two 4'-6" diameter x 12'-0" high dispenser tanks
which are connected to it by means of a 8" diameter pipeline. A
2" diameter pipeline leads from the 3.3-ton dispensers to a
flexible connection at the lance car assemblies on the second
floor of the iron desulfurization building. The silo and
dispenser arrangement was designed and manufactured by Canadian
Met-Chem Consultants, Limited of Montreal, Quebec.
Installation date: 1980.
B. Iron Desulfurization Building: The iron desulfurization
building is located between the calcium carbide silo and the new
ladle house. Built by the American Bridge Company, the two story
building is 32'-0" wide x 112'-0" long x 49'-3" to the bottom
chord of the craneway. A 2-ton service crane rests on the
craneway. A concrete foundation supports the building*s steel
framework. Its slightly gabled roof is supported by wide-flange
I-beams. The exterior of the building is made up of corrugated
metal sheeting on its roof and sides. Four ventilation ducts
protrude up through the roof. A 17'-0" wide x 17'-2" high
opening exists at both ends of the building. Running through the
openings is a standard gauge railroad track from which 175-ton
"submarine" ladle cars entered and exited the building by means
of a Stephens-Adamson car puller located outside of its eastern
wall.
A fume hood, located near each end of the building,
protrudes downwards through the first floor ceiling. Each hood
is connected to a 38" diameter duct which rises up the western
inside wall of the second story before exiting through the wall
into a bag house which is attached to the outside western wall at
an inlet elevation of 21'-0" above grade. The bag house consists
of three dust collectors connected at their bottom openings by a
screw conveyor leading to a swivel chute. A 4'-6" diameter x
70*-0" high stack is located just outside the building's western
wall at its northern end. A lance transfer car complete with its
lance is located near each end of the building on the second
floor. Each transfer car sits upon a standard gauge track which
is positioned directly above the track on the first floor. Their
lances are connected to 2" diameter pipe leading from the calcium
carbide dispenser by a flexible connection. An approximately 8 1 -
0" wide x 25'-0" long x 10'-0" high control room sits directly on
top of an electrical room of the same size along the inside
western wall of the second floor. All equipment within the