Brazil bauxite

It is also projected that Venezuela, because of its abundance of hydropower, will become a major aluminum producer. During the past decade, Brazil has attracted considerable interest because of its vast reserves of good quality bauxite and hydropower. Tile Tucurai hydroelectric power facility will double its output by 1995. 

Majm source is bauxite igihbsiie and boehmilcl Deposits, ire I ound worldwide, except in Antarctica. Major producers Australia Caribbean countries Venezuela, Brazil Indonesia... 

Aluminum Bauxite AI2O3 X H2O Australia, Brazil, Jamaica... 

An additional feature that makes obtaining many inorganic materials so difficult is that they are not distributed uniformly in the earth s crust. It is a fact of life that the major producers of niobium are Canada and Brazil, and the United States imports 100% of the niobium needed. The situation is similar for bauxite, major deposits of which are found in Brazil, Jamaica, Australia, and French Guyana. In fact, of the various ores and minerals that are sources of important inorganic materials, the United States must rely on other countries for many of them. Table 1.2 shows some of the major inorganic raw materials, their uses, and their sources. 

Bauxite Aluminum, abrasives, refractories, AI2O3 Brazil, Australia, Jamaica, Guyana 100... 

As of 2008, large reserves of bauxite were found in Australia, China, Brazil, Guinea, Jamaica, Russia, and Venezuela. Bauxite production statistics for the United States were not reported to protect trade secrets. 

Bauxite from the Guianas in South America is low in iron and silica impurities, so it is preferred when purity is important. Other important sources of bauxite are in Brazil, the southern United States, Southeast Asia, West Africa, and India. 

The production of aluminium is based on the electrolysis of molten alumina AI2O3 using the HaU-Herault process. Alumina is extracted in the Bayer process form the bauxite ore which contains 20 to 30 wt% Al. In 2002 the main producers of the ore are Australia (28%), Guinea (20%), Brazil (14%), Jamaica (7%), India (4%), and Guyana (3%) [1.9]. 

Bauxite (i.e., gibbsite, boehmite, and diaspora) China (4000), Greece (700), Brazil (350), France (300), Guyana (120) 122,000,000 Refractory grade 140-160 Abrasive grade 100-120... 

Bauxite. A mineral containing a high proportion of aluminium hydroxides, formed by weathering in tropical climates. Its principal sources are Australia, Brazil, France, French Guinea, Guyana, Hungary, Jamaica, Surinam, Russia and former Yugoslavia. It is purified in the bayer process (q.v.) to produce calcined alumina used in the abrasives, electroceramics, refractories and other branches of the ceramics industry. 

Bauxite, the main raw material for aluminum manufacturing, is found in deposits that may be very large. As a rule mining is carried out in open casts from strata typically some 4-6 m thick. The world mine production was 137 million tonnes in 2001. Austraha was the largest producer with 54 million tonnes, 40% of the total. Guinea, Brazil and Jamaica produced about 10% each, China and India 6% each, Russia, Suri-nameh and Venezuela 3% each. In Europe, Serbia, Croatia, Slovenia, Hungary and Greece are important producers [37.7]. 

Present annual world production of bauxite is about 70 000 000 ton, which results in the production of 35 000 000 ton of red mud. Many plants throughout the world have been operating for 40 years or more, and the resulting red mud wastes may exceed 1 0000000(X) ton. Assuming an average of 10ppm uranium in this mud, the volume of uranium is very large. The bulk of the radioactive bauxites are in Brazil, Cameroon, Surinam and the U.S.A. 

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