By David Lea
An in-depth survey of the key commodities of the realm * Profiles every one commodity intimately * presents in-depth facts on creation * comprises a useful listing Contents: * Introductory essays * Covers all significant agricultural and mineral items together with aluminium, coal, cotton, nickel, petroleum, bananas, rice, rubber, tea, espresso, tobacco, wheat, average fuel, soybeans, zinc, lead and phosphates * each one commodity is profiled intimately with info on actual visual appeal, background, makes use of, significant markets, developments popular, significant importers and exporters * Statistical information of contemporary degrees of construction at an international and person kingdom point * fresh traits in costs with indexes of export costs * A listing of organisations keen on commodities.
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Ghana’s bauxite reserves are estimated at 780m. tons. Although the country lacks an alumina refinery, it possesses a substantial aluminium smelter facility, located at Tema, which processes imported alumina. The smelter is operated by the Volta Aluminium Co (VALCO), which is 90% owned by Kaiser. However, in recent years severe drought has caused serious shortages of electricity for the VALCO smelter, and by mid-1998 only one of its five potlines was in operation. By 2000, however, the situation had improved, VALCO operating an average of four potlines in that year.
However, the proposed terms of the Pechiney-Alcanalgroup merger encountered opposition from the European Commission, on the grounds that the combined grouping could restrict market competition and adversely affect the interests of consumers. The tripartite merger plan was abandoned in April 2000, in favour of a merger between Alcan and algroup, which was effected in 34 AGRICULTURAL AND MINERAL COMMODITIES YEAR BOOK Production of Bauxite (crude ore, ’000 metric tons) * Estimated production. †Dried equivalent of crude ore.
After mining, bauxite is fed to process directly if mine-run material is adequate (as in Jamaica) or is crushed and beneficiated. Where the ore ‘as mined’ presents handling problems, or weight reduction is desirable, it may be dried prior to shipment. At the alumina plant the ore is slurried with spent-liquor directly, if the soft Caribbean type is used, or, in the case of other types, it is ball-milled to reduce it to a size which will facilitate the extraction of the alumina. The bauxite slurry is then digested with caustic soda to extract the alumina from the ore while leaving the impurities as an insoluble residue.