pa1778data.pdf
pa1778data.pdf
pa1778data.pdf
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U.S. STEEL DUQUESNE WORKS<br />
HAER No. PA-115<br />
(Page 147)<br />
c. Sinter Fines Screen: Located below each sinter bin<br />
feeder conveyor is a 226 ton per hour, 72" x 96" vibrating screen<br />
for separating out the sinter fines from the sinter bins.<br />
d. Main Conveyor Belt: The 48" x 133*-6" long main<br />
conveyor belt (capacity = 260 feet per minute) is laid out on a<br />
north-south axis directly below the bins and screens. It runs in<br />
a southerly direction.<br />
e. Weigh Hopper: A 30-ton weigh hopper is located<br />
below the main conveyor belt at its southern end.<br />
8. South Stockhouse Delivery Systems: The arrangement of<br />
the equipment making up the delivery systems in the south<br />
stockhouse are a mirror image of the equipment arrangement in the<br />
north stockhouse.<br />
Installation Date: 1962.<br />
9. Main Control Room: Located above the conveyor belt<br />
systems on a i6'-0" high steel framed platform approximately 10'-<br />
0" west of the skip pit is an approximately 6 , -0" wide x 10'-0"<br />
long x 8'-0" high main control room for the north and south<br />
stockhouse. Contained within it are lights and switches which<br />
monitor and regulate all activity taking place in the stockhouse<br />
for blast furnace number 6.<br />
Construction Date: 1962.<br />
HISTORY<br />
Originally built in 1896, the raw materials delivery system<br />
was part of the construction of a new blast furnace plant at the<br />
Duquesne Works which consisted of four furnaces. In 1907 two<br />
additional blast furnaces were constructed. The system delivered<br />
raw materials (i.e. coke, limestone, and iron ore) to the top of<br />
each furnace, automatically, and was considered an outstanding<br />
feature of the plant. Designed by M. A. Neeland, superintendent<br />
of the drafting department at the Duquesne Works, the system<br />
enabled the blast furnace plant to set world production records<br />
and cut labor costs by 50 percent. 1<br />
Before the application of Neeland's design, loading or<br />
charging the blast furnace was performed by manual labor. Men<br />
loaded wheel barrows on the ground and drove them to a hoist at<br />
the base of the furnace where they were lifted up by a steam<br />
engine attached to a block and pulley system to the furnace top.<br />
After reaching the top, the barrows were taken over by men called<br />
top fillers, who manually dumped their contents into the<br />
furnace. 2