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(Archived) Praxair China Combustion Technology Applied by Jinchuan Group Ltd.

SHANGHAI, China, January 4, 2011 — Praxair China has successfully commercialized Praxair Dilute Oxygen Combustion (DOC) technology at two copper smelting furnaces of Jinchuan Group Limited (JNMC) in Jinchang city, Gansu province of northwest China.

The Praxair DOC technology is expected to help JNMC achieve cost savings over 10 million RMB per year via reduced fuel consumption and reduction of carbon dioxide emissions of over 50%. In addition, nitrogen oxide emissions will be lowered significantly.

Praxair DOC technology provides higher energy efficiency and furnace operation flexibility at lower capital cost. This technology uses high-momentum fuel and oxygen jets to provide strong in-furnace gas recirculation, promoting uniform flame, uniform heat release pattern and ultra-low nitrogen oxide emissions.

In 2009, Praxair DOC technology made its debut in China at Jinlong Copper in Anhui province, East China.

Mr. Tang Hongcai, vice plant director of JNMC’s melting plant, said, “We appreciate the great efforts and enthusiasm of Praxair team in the successful commissioning of the DOC system. This has enabled our company to meet a tight project schedule.”

“It is very encouraging to see our DOC technology being applied by another customer in China," said Joe Cappello, president of Praxair Asia. “We are confident that with the great potential of the metallurgy market demand in this country, our DOC and other applications technologies for the metal industry will have more success across China, providing these customers with energy efficiency and environmental protection.”

About Jinchuan Group Limited
JNMC is a large integrated non-ferrous metallurgical and chemical industrial enterprise. It produces nickel, copper, cobalt, rare and precious metals as well as some chemical products. It is the largest nickel producer in Asia and the largest producer of cobalt in China.

About Praxair China
Praxair (China) Investment Co., Ltd is a leading industrial gas provider in China. It is headquartered in Shanghai, has 20 wholly owned companies, 9 joint ventures and over 1300 employees in the country. More information on Praxair China is available on the Internet at

About Praxair
Praxair, Inc. (NYSE:PX) is the largest industrial gases company in North and South America, and one of the largest worldwide, with 2009 sales of $9 billion. The company produces, sells and distributes atmospheric, process and specialty gases, and high-performance surface coatings. Praxair products, services and technologies bring productivity and environmental benefits to a wide variety of industries, including aerospace, chemicals, food and beverage, electronics, energy, healthcare, manufacturing, metals and others. More information on Praxair is available on the Internet at


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