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KENNECOTT TAPS PRAXAIR GASES FOR INNOVATIVE PLANT IN UTAH

 SALT LAKE CITY, Aug. 12 /PRNewswire/ -- Kennecott Utah Copper Corporate has awarded Praxair, Inc. a 20-year contract to supply oxygen and nitrogen for a modernized, $880-million copper smelter and refinery in the Salt Lake Valley where Kennecott is the nation's third largest copper producer and a major producer of gold.
 Kennecott's new operations will feature the world's cleanest copper smelter, which will capture 99 percent of the sulfur generated in the smelting process. The company has been praised by environmental organizations, government regulators and community leaders for the project, which is replacing an existing 16-year-old operation.
 Praxair will invest over $30 million at its Garfield, Utah, operations to build a new 1300-metric-ton-per-day air separation plant. The new capacity, coupled with modifications to existing 450-metric-ton- per-day equipment, will provide Kennecott with a daily supply of 1,750 metric tons of gaseous oxygen and 1,870 metric tons of gaseous nitrogen. Financial terms of the contract were not disclosed.
 Oxygen supplied by Praxair will be used in Kennecott's smelting process to remove impurities such as sulfur and iron from the ore. The iron is oxidized, forming a layer of slag that floats on top of the molten bath in the flash-smelting furnace. Sulfur dioxide is removed from the furnace off-gases, converted into sulfuric acid and sold as an industrial commodity. In addition, nitrogen -- an inert gas -- supplied by Praxair will be used by Kennecott for various protective atmosphere applications.
 Kennecott is a wholly-owned subsidiary of RTZ Corp. PLC (NYSE: RTZ), a British-based, international natural resource company.
 Praxair (NYSE: PX) is the largest industrial gases supplier in North and South America and one of the largest in the world, with 1992 sales of $2.6 billion. The company also is a leading international supplier of metallic and ceramic coatings and powders.
 -0- 8/12/93
 /CONTACT: Susan Szita Gore of Praxair, 203-794-5593/
 (PX RTZ)


CO: Praxair; Kennecott Utah Copper Corporate ST: Connecticut IN: SU: CON

MP -- NY063 -- 2186 08/12/93 14:41 EDT
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Publication:PR Newswire
Date:Aug 12, 1993
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