Bureau of Mines / Minerals yearbook area reports: international 1972
Year 1972, Volume 3 (1972)
Wessel, F. W.
Brazil, pp. 155-169 ff. PDF (1.6 MB)
164 MINERALS YEARBOOK, 1972 Table 3.—Brazil: Imports of mineral conunodities—Continued (Metric tons unless otherwise specified) Commodity 1970 1971 Principal sources, 1971 MINERAL FUELS AND RELATED MATERIALS—Continued Mineral tar and other hydrocarbon-based chemicals 113,055 152,855 UnitedStatesl4l,960. ' Revised. ' Less than 3~ unit. 2 Excludes jewelry and other ornamental items. ' Includes some material not identified by commodity in source, and commodities not listed separately in table. COMMODITY REVIEW METALS Aluminum.—Production of bauxite, alumina, and primary aluminum increased 12.5%, 15.1%, and 20.8%, respectively, in 1972. The increasing efficiency of the industry was demonstrated by its consumption of 6.22 tons of bauxi-te per ton of metal, down from 6.68 tons in 1971 and 8.74 tons in 1970, and its alumina-to-metal ratio of L97, down from 2.07 in 1971. Four smelters operated during the year. Cia. Brasileira de AlumInio (CBA), a Votorantim-group company, produced aluminum at -Sorocaba; Cia. Mineira de AlumInio produced primary metal at Pocos de Caldas; and Cia. AlumInio Minas Gerais produced aluminum at both Saramenha and Aratd; the latter plant used alumina produced at Saramenha. With developmen-t of additional bauxite reserves, several smelters were planning expansion, notably CBA, which has as its goal a 70,000-ton capacity by 1977 and 100,000 tons by 1980. The numerous teams exploring for bauxite in the lower Amazon Basin suspended activities about midyear as a result of a slump in world demand for aluminum; this condition was regarded as temporary. Prominent in the field was MineraçAo Rio do Norte, S.A., which has been examining deposits in Pará, north of the Amazon River and west of the Trombetas River, and has measured 130 million tons of alumina contained in bauxite. An annual production of 2 million tons of bauxite, mostly for export, is targeted for 1975. The company, originally a subsidiary of Alcan Aluminium, Ltd., transferred some of its holdings to the Cia. Vale do Rio Doce (CVRD). Several companies were prospecting in the Paragominas area of Pará, south of -the Amazon River and east of the Belem—B-rasilia highway. Chromite.—A newly formed Japanese company, Brazilian Chrome Resources Development Co., joined with Cia. de Ferro-Ligas da Bahia, S.A. (FERBAiSA), to expand Brazilian production of chromite and ferrochromium. Exploration increased reserves at Campo Formoso, Bahia, and from this deposit the Pedrinhas mine of FERBASA supplied that company's ferroalby furnaces and shipped concentrates to Salvador for export to Japan. Annual production of 100,000 tons of chromite and 5,000 tons of low-carbon ferrochromium, in addition to the present 10,000 tons of high-carbon alloy, was sought; however, ore reserves may support only a more limited expansion. Columbium.—Late in the year Cia. Brasileira de Metalurgia é MineraçAo (CBMM) and Cia. AgrIcola de Minas Gerais (CAMIG), a state-government corporation, formed a new company, Cia. Mineradora do Pirocboro de Araxá (COMPIRA), to exploit their adjoining m-ining concessions. The concessions were leased to COMPIRA for a nominal fee. COMPIRA will sell its ore to CBMM at cost plus 10%, and CB-MM will process the ores and market the products. Copper.—Mine production of copper declined to 4,300 tons, a decrease of 16%. Cia. Brasileira do Cobre was the sole producer. Copper has been known at Caraiba, BahIa, since 1870. The most recent resource estimate is 40 million tons of ore at a grade of not quite 1%; gold and silver are present and can be concentrated with the copper. Caraiba Metais was formed to conduct additional drilling and to start de
http://rightsstatements.org/vocab/NoC-US/1.0/| As a work of the United States government, this material is in the public domain.| For information on re-use see: http://digital.library.wisc.edu/1711.dl/Copyright