Anaconda

For operations producing 30,000 tons or less of copper annuaHy, hydrometaHurgy offers an alternative to smelting that avoids problems associated with sulfur dioxide recovery and environmental controls. Techniques include the Anaconda oxygen—ammonia leaching process, the Lake Shore roast-leach-electrowin process, and ferric chloride leaching processes for the treatment of copper sulfides. AH the facHities that use these techniques encountered serious technical problems and were shut down within a few years of start-up. 

Riesen-, gigantic, colossal. -schlange, /. python, boa constrictor, anaconda, -zelle, /. giant cell. 

Cornelison, K, Voltage Drop Table, Anaconda Wire and Cable Co. (1984). 

Anaconda ... 

Arbiter Previously known as the Sherritt-Gordon ammonia process. A process for leaching copper from sulfide concentrates, using ammoniacal ammonium sulfate solution at 85°C and relying on air oxidation. Copper is produced from the leachate by solvent extraction and electrowinning. Sulfur is recovered as ammonium sulfate. Operated on a large scale by the Anaconda Copper Company in Montana from 1974 to 1979. See Sherritt-Gordan. 

CnFeS2 + 4H2S04 = CuS04+ FeS04 + 2S02 + 2S + 4H20 Developed by the Anaconda company in 1968 but not commercialized. 

Anonymous. 1990. Health assessment for ALSCO Anaconda National priorities list. NTIS PB90-100330. 

Danger lurks everywhere. Never swim alone in the river. Huge forms move beneath its surface. There is the anaconda. The rivers abound with them. Snakes are everywhere. Be aware of this as you make your way to La Chorrera. The forest is unforgiving of error."... 

Montana Anaconda Smelter Smelter Walker and Griffin (1998)... 

Burt, R., Wilson, M. A., Keck, T. J., Dougherty, B. D., Strom, D. E., and Lindahl, J. A. (2003). Trace element speciation in selected smelter-contaminated soils in Anaconda and Deer Lodge Valley, Montana, USA. Adv. Environ. Res. 8, 51—67. 

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). 

In the case of lead arsenate (acid form), calcium arsenate, and sodium arsenate, the Pb-isotopic compositions closely match those of sulfides from porphyry copper deposits from southeastern Arizona, specifically from the Pima and Silver Bell districts (Bouse et al., 1999). Notably, other major historical producers of arsenic trioxide (e.g., Anaconda Copper Co., US Smelting Co., Jardine Mining Co.) used... 

Momeni MH, Kisieleski WE. 1980. Measured concentrations of radioactive particles in air in the vicinity of the Anaconda uranium mill [Bluewater, New Mexico]. Report ISS NUREG/CR-1320, ANL/ES-89. 

A major source of water for leaching is the normally acidic run-off water from the mining operation itself. O Leary (02) describes a technique of cleaning up to 900 gal/min of mine and tailings water at the Butte operation of the Anaconda Company. The suspended solids, which at times are in excess of 2% by weight, are equivalent to about 50 tons of mud per day. Since copper is recovered from this stream by precipitation and the barren liquor is used to leach the mine w aste dumps, solids, and colloidal materials have to be removed. With a flocculant, a 98% reduction in solid content is attained with a feed stream containing 0.22% solid. 

As the Union s anaconda tightened, the South desperately sought alternatives to foreign drag supplies that were always chancy at best. The South did so by establishing a supply table of indigenous South-... 

The drainage basin of the Clark Fork, an eastern tributary of the Columbia River, has been affected for long distances by the copper mining and ore treatment processes that were conducted at Butte and Anaconda, Montana, for about 125 years, ending in 1982. Conditions in this stream have been described (28). A more recent paper (29) pointed out that many streams in mineralized areas had relatively high metal concentration prior to the beginning of niining activity. 

The residents also noted that prior to Champion s purchase of the property, in the early 1970 s, Anaconda Mining Company operated a sawmill on the property, producing timbers for the mines at Butte (a large mining... 

A few of the residents also wondered what was in the small reservoir to the south that dammed the Clark Fork River. The river had received mining and milling wastes for over 100 years from the Butte and Anaconda areas 190 to 240 km upstream. In 1975, Bailey, as part of her Master of Science at the University of Montana, sampled reservoir sediments (Bailey, 1976) and found elevated concentrations of copper, lead and zinc (Bailey and Weisel, 1976). However, she did not analyze the sediment for arsenic. 

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