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Zinc was the economic mainstay until 1931, when low zinc prices forced the company to switch to mining copper-silver ores. [8] Zinc production resumed in 1941, and remained the principal product of the mines until they were closed in the 1980s. The town population was a few hundred in the 1960s.
According to the company's 2018 annual report, the Vancouver-headquartered Teck Resources is a "diversified resource company" that focuses on "steelmaking coal, copper, zinc and energy", [1]: 1 with ownership or interests in thirteen "operating mines, a large metallurgical complex, and several major development projects in the Americas."
The trihydrate salt is obtained as a reddish-brown precipitate by adding two equivalents of potassium cyanide to a cobalt salt solution: [3]. CoCl 2 (H 2 O) 6 + 2 KCN → Co(CN) 2 + 2 KCl + 6 H 2 O
In 2019, 552,400 tonnes of zinc, 71 percent of US mined zinc production, and 4.2 percent of world zinc production, came from Teck Resources' Red Dog mine, the world's most productive zinc mine, in northwest Alaska, near Kotzebue. [2] [3] [1] The mine opened in 1989. [4] The zinc is shipped as concentrate to foreign smelters.
For commercial applications, some effort is made to avoid halide impurities by using acetate salts of zinc: [5] [6] Zn(CH 3 COO) 2 + HCN → Zn(CN) 2 + 2 CH 3 COOH. Zinc cyanide is also produced as a byproduct of certain gold extraction methods. Procedures to isolate gold from aqueous gold cyanide sometimes call for the addition of zinc:
The ZINC database (recursive acronym: ZINC is not commercial) is a curated collection of commercially available chemical compounds prepared especially for virtual screening. ZINC is used by investigators (generally people with training as biologists or chemists ) in pharmaceutical companies , biotechnology companies , and research universities .
Artazn, formerly known as Jarden Zinc Products LLC. is a manufacturer of zinc products. The company is a subsidiary of One Rock Capital. The company is a subsidiary of One Rock Capital. The company is most notable for being the sole manufacturer of planchets used in the production of the United States penny .