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Companhia Brasileira de Metalurgia e Mineração (Portuguese for Brazilian Metallurgy and Mining Company), or CBMM for short, is a Brazilian company that specializes in the processing and technology of niobium, extracted from its pyrochlore mine near the city of Araxá, in the Brazilian state of Minas Gerais.
The Boa Vista mine is an open pit niobium and phosphate mine located near the city of Catalão in Goiás state in Brazil. Geologically, it is located on the Catalão II carbonatite complex. [2] [3] The mine was opened by Anglo American plc, and had an output of 4,700 tons of niobium in 2014. [4]
In 2019, Brazil's figures were as follows: it was the world's largest producer of niobium (88.9 thousand tons); [2] the 2nd largest world producer of tantalum (430 tons); [3] the 2nd largest world producer of iron ore (405 million tons); [4] the 4th largest world producer of manganese (1.74 million tons); [5] the 4th largest world producer of bauxite (34 million tons); [6] the 4th largest ...
It was not until the early 20th century that niobium was first used commercially. Niobium is an important addition to high-strength low-alloy steels. Brazil is the leading producer of niobium and ferroniobium, an alloy of 60–70% niobium with iron. Niobium is used mostly in alloys, the largest part in special steel such as that used in gas ...
Pages in category "Niobium mines in Brazil" The following 2 pages are in this category, out of 2 total. This list may not reflect recent changes. B. Boa Vista mine; C.
The National Department of Transport Infrastructure said the central span of the 533-meter (0.3-mile) bridge, linking the cities of Estreito in Maranhao state and Aguiarnopolis in Tocantins state ...
The 163 Chinese workers found by Brazil's labor ministry in what it described as "slavery-like conditions" at a factory construction site owned by Chinese electric vehicle producer BYD have been ...
CMOC or CMOC Group Limited (simplified Chinese: 洛阳钼业; traditional Chinese: 洛陽鉬業; pinyin: Luòyáng mù yè), previously known as China Molybdenum Company Limited, [4] is one of the world's largest producers of molybdenum, tungsten, niobium and cobalt.