The Garfield Smelter Stack was completed in 1974, replacing several earlier smokestacks, the tallest of which was 413 feet (126 m) high. The extra height was needed to meet the requirements of the Clean Air Act of 1970, to disperse waste gases according to new standards.[1]
In response to new emissions limits and anticipated future state and federal standards, Outokumpu and Kennecott had conducted flash converting pilot tests from 1985 at Outokumpu's research facility in Finland. With the introduction of strict new environmental regulations in the state of Utah, the smelter's maximum permissible sulphur emission was decreased to 1,082 short tons (982 t) per year from the earlier 18,574 short tons (16,850 t). In 1995 a new, cleaner flash smelting furnace was commissioned. By 2004, the annual average SO2 emissions from the stack were 161.5 lb/h (73 kg/h), below the permitted average annual level of 211 lb/h (96 kg/h) (with a three-hour permitted SO2 limit of 552 lb/h (250 kg/h)).[2][3][4]
The off-gases from the flash smelting furnace contain 35-40% sulfur dioxide. They are cooled and cleaned in a waste-heat boiler, electrostatic precipitator and scrubbing system before being sent to the sulfuric acid plant. The acid plant produces either 94% or 98% sulfuric acid with tail gas containing typically 50-70 ppm sulfur dioxide, resulting in a measured sulfur fixation of greater than 99.9%. In 2006 the company produced and sold approximately 833,000 short tons (756,000 t) of sulfuric acid, made from the formerly released gas. The acid recovery plant is designed to also recover waste heat from the process to produce electrical power. Approximately 24 MW of electrical power is generated, representing 70% of the smelter’s electrical requirements.[5][6]
Design and construction
The stack is 177 feet (54 m) in diameter at the bottom with 12-foot (3.7 m) walls, and rises directly from the ground. At the top it is 40 feet (12 m) in diameter and 12 inches (0.30 m) thick. A large fiberglass duct passes up the stack and carries gases to the top.[1][7]
26,317 cubic yards (20,121 m3) of wood and 900 short tons (820 t) of steel were used in its construction. Construction commenced on August 26, 1974 and finished on November 19, an 84-day concrete pour. It cost $16.3 million at the time to build, the equivalent of $78.7 million in 2015 dollars.[1][7]
The top can be accessed by a Swedish-built elevator that crawls up a gear track on the inside surface. It takes 20 minutes to ascend the stack, although workers only need to travel up to the 300-foot level each day, to service the air-sampling station.[1]
The Garfield Smelter Stack is the tallest free-standing structure west of the Mississippi River, the fourth tallest smokestack in the world and the fifty-ninth tallest free-standing structure on earth. It is the only operating smelter chimney left in Utah.[6][1]
^ abcdefArave, Lynn (16 November 2009). "Holy smokes: Kennecott smelter, Utah's tallest man-made structure, to turn 35". Deseret News. Retrieved 13 November 2015.
^"Sustainable Development Report" (PDF). Kennecott Utah Copper. Rio Tinto. 2004. p. 44. Retrieved 13 November 2015.
^"A Big Step for Copper Smelting: Flash Converting". Outokumpu News. Copper Development Association Inc. February 1998. Retrieved 15 November 2015.
^Pipkin, Bernard W.; Trent, Dee; Hazlett, Richard; Bierman, Paul (2013). "Mineral Resources and Society". Geology and the Environment. Belmont, CA: Cengage Learning, National Geographic Society. p. 478. ISBN9781133603986. Retrieved 16 November 2015.
^"Sulfuric Acid Environmental Profile Life Cycle Assessment" (PDF). Kennecott. Kennecott Utah Copper, LLC. 2006. p. 2. Retrieved 13 November 2015.
^ abNewman, C.J.; Collins, D.N.; Weddick, A.J. (1999). "Recent Operation and Environmental Control in the Kennecott Smelter". In Diaz, C.; Landolt, C.; Utigard, T. (eds.). (PDF). Warrendale, PA: Minerals, Metals, and Materials Society. p. 29. ISBN9780873394406. Archived from the original (PDF) on 4 March 2016. Retrieved 15 November 2015.
^ ab"Quick Facts about Kennecott Utah Copper's Garfield Smelter Stack" (PDF). Kennecott Utah Copper. Rio Tinto. Retrieved 16 November 2015.
External links
Wikimedia Commons has media related to Kennecott Smokestack.
Kennecott Utah Copper
A comparison with other large stacks of the world can be seen at skyscraperpage
January 26, 2023
kennecott, garfield, smelter, stack, coordinates, 721563, 198118, 721563, 198118, kennecott, utah, copper, garfield, smelter, stack, feet, high, smokestack, west, magna, utah, alongside, interstate, near, great, salt, lake, built, disperse, exhaust, gases, fro. Coordinates 40 43 18 N 112 11 53 W 40 721563 N 112 198118 W 40 721563 112 198118 Kennecott Utah Copper LLC s Garfield Smelter Stack is a 1 215 feet 370 m high smokestack west of Magna Utah alongside Interstate 80 near the Great Salt Lake It was built to disperse exhaust gases from the Kennecott Utah Copper smelter at Garfield Utah 1 Kennecott Utah Copper s Garfield Smelter Stack Interstate 80 in foreground with the Oquirrh Mountains behind Aerial view of 1215 foot tall Garfield Smelter Stack the north end of the Oquirrh Mountains and the Great Salt Lake 2016 Contents 1 Waste gases 2 Design and construction 3 See also 4 References 5 External linksWaste gases EditThe Garfield Smelter Stack was completed in 1974 replacing several earlier smokestacks the tallest of which was 413 feet 126 m high The extra height was needed to meet the requirements of the Clean Air Act of 1970 to disperse waste gases according to new standards 1 In response to new emissions limits and anticipated future state and federal standards Outokumpu and Kennecott had conducted flash converting pilot tests from 1985 at Outokumpu s research facility in Finland With the introduction of strict new environmental regulations in the state of Utah the smelter s maximum permissible sulphur emission was decreased to 1 082 short tons 982 t per year from the earlier 18 574 short tons 16 850 t In 1995 a new cleaner flash smelting furnace was commissioned By 2004 the annual average SO2 emissions from the stack were 161 5 lb h 73 kg h below the permitted average annual level of 211 lb h 96 kg h with a three hour permitted SO2 limit of 552 lb h 250 kg h 2 3 4 The off gases from the flash smelting furnace contain 35 40 sulfur dioxide They are cooled and cleaned in a waste heat boiler electrostatic precipitator and scrubbing system before being sent to the sulfuric acid plant The acid plant produces either 94 or 98 sulfuric acid with tail gas containing typically 50 70 ppm sulfur dioxide resulting in a measured sulfur fixation of greater than 99 9 In 2006 the company produced and sold approximately 833 000 short tons 756 000 t of sulfuric acid made from the formerly released gas The acid recovery plant is designed to also recover waste heat from the process to produce electrical power Approximately 24 MW of electrical power is generated representing 70 of the smelter s electrical requirements 5 6 Design and construction EditThe stack is 177 feet 54 m in diameter at the bottom with 12 foot 3 7 m walls and rises directly from the ground At the top it is 40 feet 12 m in diameter and 12 inches 0 30 m thick A large fiberglass duct passes up the stack and carries gases to the top 1 7 26 317 cubic yards 20 121 m3 of wood and 900 short tons 820 t of steel were used in its construction Construction commenced on August 26 1974 and finished on November 19 an 84 day concrete pour It cost 16 3 million at the time to build the equivalent of 78 7 million in 2015 dollars 1 7 The top can be accessed by a Swedish built elevator that crawls up a gear track on the inside surface It takes 20 minutes to ascend the stack although workers only need to travel up to the 300 foot level each day to service the air sampling station 1 The Garfield Smelter Stack is the tallest free standing structure west of the Mississippi River the fourth tallest smokestack in the world and the fifty ninth tallest free standing structure on earth It is the only operating smelter chimney left in Utah 6 1 See also EditList of chimneys List of tallest freestanding structures in the worldReferences Edit a b c d e f Arave Lynn 16 November 2009 Holy smokes Kennecott smelter Utah s tallest man made structure to turn 35 Deseret News Retrieved 13 November 2015 Sustainable Development Report PDF Kennecott Utah Copper Rio Tinto 2004 p 44 Retrieved 13 November 2015 A Big Step for Copper Smelting Flash Converting Outokumpu News Copper Development Association Inc February 1998 Retrieved 15 November 2015 Pipkin Bernard W Trent Dee Hazlett Richard Bierman Paul 2013 Mineral Resources and Society Geology and the Environment Belmont CA Cengage Learning National Geographic Society p 478 ISBN 9781133603986 Retrieved 16 November 2015 Sulfuric Acid Environmental Profile Life Cycle Assessment PDF Kennecott Kennecott Utah Copper LLC 2006 p 2 Retrieved 13 November 2015 a b Newman C J Collins D N Weddick A J 1999 Recent Operation and Environmental Control in the Kennecott Smelter In Diaz C Landolt C Utigard T eds Copper 99 Cobre 99 Smelting Technology Development Process Modeling and Fundamentals PDF Warrendale PA Minerals Metals and Materials Society p 29 ISBN 9780873394406 Archived from the original PDF on 4 March 2016 Retrieved 15 November 2015 a b Quick Facts about Kennecott Utah Copper s Garfield Smelter Stack PDF Kennecott Utah Copper Rio Tinto Retrieved 16 November 2015 External links Edit Wikimedia Commons has media related to Kennecott Smokestack Kennecott Utah Copper A comparison with other large stacks of the world can be seen at skyscraperpage Retrieved from https en wikipedia org w index php title Kennecott Garfield Smelter Stack amp oldid 1080005571, wikipedia, wiki, book, books, library,
