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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.
This is a list of countries by bauxite production in 2023. There have been some changes from the geographical rankings of 2022. Data
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.
The Mediterranean Bauxite Province is a major region of high-quality bauxite ores that stretches for 3,000 km along the northern shore of the Mediterranean Sea from Spain to Turkey, encompassing parts of southern France, Italy, countries of ex-Yugoslavia, and Greece. The province covers an area of about 2 million km 2.
Most of Indonesia's known reserves of bauxite are located in the Riau Islands (namely Bintan), the Bangka Belitung Islands, and West Kalimantan. [6] The reserves are in form of laterite ores, [7]: 163 and the United States Geological Survey gave a figure of 1.2 billion tonnes of bauxite in Indonesia's reserves.
Bauxite: The bauxite is best developed from Nilawahn to Khura in the south of the Salt Range. In general the content of alumina and silica has inverse relationship from east to west. [1] Jhelum District: Bentonite: It is presently being extracted from Siwalik rocks found near Villages of Jalalpur Sharif and Dina in Jhelum District.
Bauxite ore from mines in South America (Kaiser later owned their bauxite mines in Jamaica) was shipped to Baton Rouge, LA to be separated into alumina powder and ore. The alumina was shipped to two plants in Washington State to be reduced to ingots and to a third plant in Washington to be turned into plate, sheet and strip aluminum.