American Smelting and Refining

ASARCO [American Smelting and Refining Company] This large metallurgical company has given its name to a flue-gas desulfurization process in which the sulfur dioxide is absorbed in dimethylaniline and subsequently desorbed at a higher temperature. Operated in California, Tennessee, and Norway. 

Three major companies accounted for the bulk of US arsenic production in the first half of the twentieth century American Smelting and Refining Co. (ASARCO both copper and lead smelting in several domestic plants), Anaconda Copper Co. (copper smelting), and US Smelting Co. (lead smelting), along with several minor producers. Notably, from 1974 to 1985, the domestic supply of arsenic was controlled by ASARCO, and since 1985 by imports primarily from China, Chile, and Mexico (Mineral Commodity Summaries, 2004). 

Similar acid-base chemistry is involved in the American Smelting and Refining Company s (ASARCO s) sulfur dioxide capture process using aqueous dimethylaniline (Eq. 3.25). 

Sulfur dioxide capture and subsequent reduction to a sulfur product has also been tested. The American Smelting and Refining Company s process involves combustion of the cooled and cleaned smelter gases with methane (Fig. 13.10 Eq. 13.38). 

Preparation. Pure sulfur (American Smelting and Refining Co.) is heated to 165°, and pure chlorine is passed through the melt until all sulfur remains dissolved when the solution is cooled to room temperature. The product is then fractionated S2C12, b.p. 40722 mm. 

Central Research Laboratories, American Smelting and Refining Co.,... 

Materials. Sulfur was obtained from the American Smelting and Refining Co. with a purity specification of 99.999+%. No further purification was attempted. The P4S3 was procured from the Eastman Kodak Co. One batch of this material, which was purified by extraction wUh CS2 followed by sublimation, had a melting point of 171.4 0.1 °C. Ihe best literature value for the melting point of P4S3 appears to be 174 1°C... 

Jackson Ml, and there was engaged in the design of major hydroelectric plants for 30 years. He also was associated with the Consumers Power Company, the Commonwealth and Southern Corporation, and the Ambursen Engineering Company as vice-president, then headed by Nils F. Ambursen (1876-1953). He conducted his own consulting office, and for the last eight years of his life served as hydraulic consultant to the American Smelting and Refining Company, Tucson AZ. 

American Smelting and Refining American Metal Climax Anaconda Co. 

Betterton (2) A process for removing zinc from lead by reaction with gaseous chlorine at400°C. The resulting zinc chloride floats on the molten metal and is skimmed off. Invented in 1928 by J.O. Betterton at the American Smelting and Refining Company. 

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