Bureau of Mines / Minerals yearbook: Metals and minerals 1978-79
Year 1978-79, Volume 1 (1978-1979)
Rowland, T. John, Jr.; Cammarota, V. A., Jr.
Antimony, pp. 63-70 PDF (797.4 KB)
MINERALS YEARBOOK, 1978-79 64: duction of antimony to 299 tons, compared with 207 tons in 1978. The Sunshine Mining Co. operated the Sunshine mine in the Coeur d'Alene district of Idaho and produced 423 tons of antimony, a decrease of 168 tons from the 1978 output. Antimony was produced as a byproduct of the treatment of tetrahedrite, a complex silver-copperantimony sulfide, one of the principal ore minerals in the Kellogg, Idaho, area. In June 1979, a 19% stock interest in Sunshine Holdings Corp. was sold to Arab Investors Group SA, a Luxembourg corporation. Antimony was also produced as a byproduct in smelting primary lead from domestic concentrates. The total antimony supply from domestic mines was 1,337 tons in 1978 and 930 tons in 1979. Two primary lead refiners reported production in 1978 and 1979. Table 2.—Antimony mine production and shipments in the United States (Short tons) Antimony Antimony concentrate Produced Shipped 1975 4,505 886 966 1976 1,111 283 310 1977 3,496 610 534 1978 4,231 798 863 1979 3,294 722 701 SMELTER PRODUCTION M&T Chemicals Inc., Baltimore, Md.; and McGean Chemical Co., Inc., Cleveland, Prirnary.—Production of primary SIlti Ohio. Producers of antimony metal included mony products m 1979 was the highest smce Sunshine Mining Co., Kellogg, Idaho, and 1974. Metal production increased after 2 years of decline, and the production of USAC at Thompson Falls, Mont., which also produced sodium antimonate. antimony oxide remamed strong. The production of metal more than doubled in 1978 Secondary—Production of antimony with the reopening of the expanded Laredo, from secondary sources decreased in 1978 Tex., smelter which Anzon America Inc. from that of 1977. Data were not available bought from NL Industries. ASARCO Incor- for 1979. Secondary smelters recovered porated produced and sold a small amount 22,371 tons, primary smelters recovered 73 of metal in 1979 from its new smelter in El tons, and manufacturers and foundries rePaso, Tex., but mechanical problems pro covered the remaining 4,012 tons. Old scrap, Cluded full-scale operation. ASARCO began predominantly battery plates, was the full production at its Omaha, Nebr., anti- source of most of the secondary output; new mony oxide plant in early 1979. The plant, scrap, mostly in the form of drosses and built at a cost of approximately $2.2 million, residues from various sources, supplied the has a rated capacity of 225 tons of antimony remainder. The antimony content of scrap oxide per month and utilizes an enclosed is usually recovered and consumed as anti- and automated process. monial lead with removal or addition of The major producers of antimony oxide antimony as required in the refining stage were Harshaw Chemical Co., Gloucester to meet specifications for various antimo City, N.J.; Chemetron Corp., La Porte, Tex.; nial lead alloys. Table 3—Primary antimony produced in the United States (Short tons of antimony content) Class of material produced Byproduct Total Metal Oxide Residues antimonial lead 1975 —- 3,254 7,890 595 450 12,1891976 —- 3,102 10,628 191 697 14,6181977 1,877 9,907 277 766 12,8271978 —- 1,108 12,117 184 701 14,1101979 —- 2,642 12,141 —— 279 15062
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