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Bauxite is the main source of the rare metal gallium. [17] During the processing of bauxite to alumina in the Bayer process, gallium accumulates in the sodium hydroxide liquor. From this it can be extracted by a variety of methods. The most recent is the use of ion-exchange resin. [18]
Bauxite forms by the weathering of aluminum-rich and silica-poor rocks in hot, humid, climates, at places with good drainage. Under the proper conditions, weathering disintegrates the aluminium silicate minerals, and dissolves and removes the silica, creating bauxite. The mined US bauxite deposits have all been in the southeastern United States.
Red mud near Stade Bauxite, an aluminium ore (Hérault department, France).The reddish colour is due to iron oxides that make up the main part of the red mud.. Red mud, now more frequently termed bauxite residue, is an industrial waste generated during the processing of bauxite into alumina using the Bayer process.
2023 bauxite production and reserves (thousands of tons) [1] Country Production Reserves World: 400,000: 30,000,000
Compagnie des bauxites de Guinée (CBG) is a Guinean mining company. Since 1963 it has extracted bauxite from the notable mine in Sangarédi, in Boké Region in Guinea.It is 49% owned by the Guinean State, with the remainder owned by the Boké Investment Company, a 100%-owned subsidiary of Halco Mining, a consortium opened in 1962 by Harvey Aluminum Company to run mining operations in Guinea.
Balmoral in Alum Bay Sand, by M Carpenter Georgian sand painting by Benjamin Zobel, c. 1800 Victorian sand picture of Steephill Castle by Edwin Dore. Marmotinto is the art of creating pictures using coloured sand or marble dust and otherwise known as sand painting.
Bauxite is a raw material used primarily in the production of aluminium. The bauxite ore is refined into alumina before being smelted into aluminium. [3] Australia is known for its high-grade ore, especially in the Weipa and Gove deposits. [2] The quality of bauxite ore is determined by its available alumina (Al 2 O 3) content.
Jotun merged with three other paint producers in 1971 and became not only Norway's largest paint producer but also one of the largest companies in Norway. [4] As of January 2021, the company has a presence in more than 100 countries around the world, with more than 10,000 employees, 67 companies in 45 countries, and 40 production facilities in ...
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