pa1778data.pdf

More documents

Recommendations

Info

$lit- \NBS)NE/$

U.S. STEEL DUQUESNE WORKS HAER No. PA-115 (Page 153) The north and south stockhouse sinter conveyor belts also serviced one 6,000 cu. ft. capacity sinter fines bin and one 3,000 cu. ft. capacity scrap and scale bin each, the material from these bins passed through a sinter weigh hopper before being delivered by a chute to its respective skip car. Upon being filled with raw material, the skip car was hoisted up to the top of the furnace by means of a 275 hp direct current motor/drive/winch drum assembly located in the elevated hoist house. After reaching the furnace top, the car dumped its contents into a receiving hopper where it was delivered by gravity to the hopper of the revolving distributor. The distributor sat directly on top of the small bell and was designed to have a flexible rotating system. It could be set to rotate a preselected number of degrees in increments of 60 degrees after the dumping of each skip car or it could be set to spin continuously immediately before and during the dumping of each car. Subsequently, the small bell was lowered by means of a compressed air powered hydraulic cylinder located in the hoist house until it had dropped its load onto the intermediate bell. The lowering of the intermediate bell was accomplished in the same manner in order to drop the raw materials onto the large bell. Operation of the large bell was set to dump its contents into the furnace proper after a preselected number of skip loads had passed through the upper two bells onto it. The primary advantages of the three bell system was its ability to handle the larger raw material requirements of Dorothy 6 and to facilitate the charging of raw materials into a furnace operating with high top pressures without the loss of valuable gases. 10 The coke breeze removal system was altered in 1960 in conjunction with the construction of Dorothy 6. The existing conveyor and coke dust larry cars were succeeded by a 3 hp motor powered 20" conveyor belt carrying coke breeze from the dust hoppers under the vibrating coke screens to a 24" motor powered main coke breeze conveyor running along the entire eastern wall of the stockhouse to the newly built stockhouse for Dorothy 6. From there the coke breeze was dropped into a chute leading down through a skip pit into a waiting skip car with a capacity of 50 cu. ft. The skip car was periodically hoisted to an above ground bin where it deposited its contents. 11 During the late 1960s the Neeland designed system at blast furnace number 2 was dismantled along with the furnace itself. This was the result of a "breakout" of molten ferro-manganese through the lining and shell at the furnace's hearth. 12 When the blast furnace plant at the Duquesne Works was shut down in 1984 it contained three generations of raw materials
U.S. STEEL DUQUESNE WORKS HAER No. PA-115 (Page 154) delivery systems. The Neeland system remained operational until blast furnace number 1 was retired in 1982. Although the Neeland design represented a breakthrough in raw materials delivery technology at the blast furnace, it was adapted more widely in Europe than in America. American blast furnace plants more frequently utilized the skip car delivery system developed shortly after the Neeland process. One of the most widely used American skip car delivery systems, the McKee system, was represented at Duquesne blast furnaces numbers 3 and 4. The Mohr designed system at blast furnace number 6 represented a major upgrading of the raw materials delivery systems developed by Neeland and McKee. Its computer controlled system was able to deliver a larger amount of raw materials from the stockhouse to the furnace in a more accurate, regular, and efficient manner. 13 ENDNOTES: 1."Duquesne Furnaces and Steel Works," The Iron Trade Review 30 (March 4, 1897): 8-9; "The Duquesne Furnaces of the Carnegie Steel Co., Ltd.," The Iron Trade Review 30 (March 25, 1897): 7- 10; "The Duquesne Furnace Plant of the Carnegie Steel Company Limited," The Iron Age 59 (March 35, 1897): 5-11; Harold C. Livesay, Andrew Carnegie and the Rise of Big Business (Boston: 1975) : 150. 2.J. E. Johnson Jr., Blast Furnace Construction in America (New York: 1917), 15 - 16; Harold E. McGannon, ed., The Making, Shaping, and Treating of Steel, Eighth Edition (Pittsburgh: 1964), 9. 3.Johnson, 80-82; "The Duquesne Furnaces of the Carnegie Steel Co. Ltd.," 7-9; "The Duquesne Furnace Plant of the Carnegie Steel Company Limited," 6-8. 4.Duquesne Times, April 11, 18, 1924; The Daily News, McKeesport, Pa., April 18, 1924; "New Capacity in Iron and Steel Works," The Iron Acre 113 (January 3, 1924): 110. 5.Carnegie Steel Company, "General Arrangement of Coke Trestle, Sixth Lining - Reconstruction: Drawing #15416, March 20, 1924."; Carnegie Steel Co., "General Arrangement of Dust Pocket Screens and Hopper Coke Bin, Sixth Lining Reconstruction, No. 1 Blast Furnace: Drawing #14979, March 2, 1923."; Carnegie Steel Co., "Chute, Gate, etc. Coke Charging Equipment, 6th Lining - Reconstruction, No. 2 Blast Furnace: Drawing #15604, August 12, 1924."; Carnegie Steel Co., "General Arrangement of Dust Pocket, Screens and Hopper Coke Bin, Sixth Lining (Reconstruction) No.3 Blast Furnace: Drawing #13 959, August 28, 1920."; Carnegie Steel Co., "Coke Bin Gate, Coke Bins, Sixth Lining (Reconstruction) No.
Page 1 and 2:
U.S. STEEL DUGUESNE WORKS HAER Wo.
Page 3 and 4:
U.S. STEEL DUQUESNE WORKS HAER No.
Page 5 and 6:
U.S. STEEL DUQUESNE WORKS HAER NO.
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
# U.S. STEEL DUQUESNE WORKS HAER NO
Page 15 and 16:
Page 17 and 18:
• U.S. STEEL DUQUESNE WORKS HAER
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
FART THREE: 1946-1988 U.S. STEEL DU
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
seeks to develop it into an industr
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
• northern wall and 27'-0" from t
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Installation Date: 1955. U.S. STEEL
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
cooling tower has a capacity of 190
Page 91 and 92:
* * tunnel beneath the clarifier. I
Page 93 and 94:
* U.S. STEEL DUQUESNE WORKS HAER No
Page 95 and 96:
Page 97 and 98:
# U.S. STEEL DUQUESNE WORKS HAER No
Page 99 and 100:
Page 101 and 102:
# » U.S. STEEL DUQUESNE WORKS HAER
Page 103 and 104: • # # U.S. STEEL DUQUESNE WORKS H
Page 105 and 106: U.S. STEEL DUQUESNE WORKS HAER No.
Page 109 and 110: # U.S. STEEL DUQUESNE WORKS HAER No
Page 111 and 112: # U.S. STEEL DUQUESNE WORKS HAER No
Page 113 and 114: Historic Name Present Name: Locatio
Page 115 and 116: dumped. Construction Date: 1957. U.
Page 117 and 118: U.S. STEEL DUQUESNE WORKS HAER NO.
Page 121 and 122: U.S. STEEL DUQUESNE WORKS HAER NO.
Page 133 and 134: B. Hoist House,: U.S. STEEL DUQUESN
Page 135 and 136: • U.S. STEEL DUQUESNE WORKS HAER
Page 153: U.S. STEEL DUQUESNE WORKS HAER No.
Page 165 and 166: Historic Name: Present Name: Locati
Page 183 and 184: STEELMAKING PLANT - HEAT TREATMENT
Page 187 and 188: and is set into the floor of the bu
Page 191 and 192: STEELMAKING PLANT - BASIC OXYGEN U.
Page 205 and 206:
construction carbon and alloy steel
Page 207 and 208:
Page 209 and 210:
Page 211 and 212:
Page 213 and 214:
Page 215 and 216:
Page 217 and 218:
Page 219 and 220:
Page 221 and 222:
Page 223 and 224:
Page 225 and 226:
Page 227 and 228:
Page 229 and 230:
Page 231 and 232:
Page 233 and 234:
Page 235 and 236:
Page 237 and 238:
Page 239 and 240:
Page 241 and 242:
Page 243 and 244:
Page 245 and 246:
Page 247 and 248:
A U.S. STEEL DUQUESNE WORKS W HAER
Page 249 and 250:
Page 251 and 252:
A U.S. STEEL DUQUESNE WORKS W HAER
Page 253 and 254:
Page 255 and 256:
• • U.S. STEEL DUQUESNE WORKS H
show all

pa1778data.pdf

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?