pa1778data.pdf
pa1778data.pdf
pa1778data.pdf
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U.S. STEEL DUQUESNE WORKS<br />
HAER No. PA-115<br />
(Page 194)<br />
upwards to the flux storage floor of the building. The lances<br />
enter the top opening of each furnace through a collar protected<br />
opening on each fume hood.<br />
4. Batching Floor: The 86'-0" wide x 225'-0" long batching<br />
floor is located on a steel framed platform 2 0'-3" directly above<br />
the service floor.<br />
a. Weigh Hoppers: Located in the middle of the floor<br />
and laid out linearly on a north-south axis are six weigh hoppers<br />
hanging from the weighing floor. They are composed of two 100<br />
cu. ft. capacity spar hoppers, two 100 cu. ft. capacity ore<br />
hoppers, and two 600 cu. ft. capacity lime hoppers. Attached to<br />
the bottom of each hopper is a Carrier feeder conveyor.<br />
b. Scales: Six Rex scales are located directly<br />
opposite their respective weigh hoppers on the western side of<br />
the floor.<br />
c. Main Flux Conveyor Belt: A 30" wide x 95 '-0 M long,<br />
268 ton per hour reversible conveyor belt powered by a 7.5 hp<br />
motor is located directly below the feeder conveyors attached to<br />
the bottom of each weigh hopper. Laid out on a north-south axis,<br />
the main conveyor belt delivers the raw material batches to one<br />
of two cross conveyors.<br />
d. Cross Conveyor Belt: A 30" wide x 15 f -0" long<br />
conveyor belt, running in a easterly direction, is located at the<br />
north end of the main conveyor belt. The conveyor is powered by<br />
a 5 hp motor. The raw material batches drop onto the cross<br />
conveyors from the main belt and are delivered to the top opening<br />
of the batching hoppers.<br />
5. Weighing Floor: Located 14'-6" directly above the<br />
batching floor, the 86'-0" wide x 225'-0" long weighing floor is<br />
made up of a steel framed platform.<br />
a. Storage bins: Laid out on a north-south axis, seven<br />
storage bins are suspended from the flux storage floor. Two 2750<br />
cu. ft. capacity lime bins, two 1890 cu. ft. capacity spar bins,<br />
and two 1800 cu. ft. capacity ore bins are located directly above<br />
their respective weigh hoppers on the floor below. A 1750 cu.<br />
ft. capacity coke storage bin is located at the southern end of<br />
the line. Each of the lime, spar, and ore bins has a Carrier<br />
feeder conveyor attached to its bottom opening. The conveyors<br />
drop their contents into a chute which leads to the top openings<br />
of the weigh hoppers below.<br />
b. Oxygen Lance, Fume Hood and Stack Cooling Water