Bauxite - an overview | ScienceDirect Topics Bauxite is defined as a mineral ore composed primarily of aluminum oxides and or hydroxides, along with smaller amounts of iron oxyhydroxides and clay minerals It is specifically classified based on its aluminum content and weight ratios, meeting industrial standards for aluminum production
Bauxite - an overview | ScienceDirect Topics Bauxite occurs mainly in tropical and subtropical areas In 2000, Australia was the leading worldwide bauxite producer with a production share of 39%, followed by Guinea (13%), Brazil (10%), and Jamaica (8%) (Table II) Bauxite reserves are estimated to be 23,000 million tons
Dealkalization processes of bauxite residue: A comprehensive review . . . Bauxite residue (BR) is a kind of alkaline solid waste generated from the alumina refining industry (Zhu et al , 2016a; Liu et al , 2007; Khairul et al , 2019; Zhang et al , 2016) Bauxite residue is also known as red mud, which is named because it is mostly red silty for containing a certain amount of iron oxide (Aluminium, 2015)
A comparative review of the mineralogical and chemical composition of . . . Bauxite is the main source of the world's aluminium, supplying 99% of metallic aluminium Thus Bauxites are economic concentrations of aluminum, developed from the weathering of aluminosilicate-rich parent rocks [4] Aluminium in bauxites is known to be precipitated in the form of gibbsite [Al(OH) 3] or amorphous Al-hydroxides
Bauxite residue (red mud) treatment: Current situation and promising . . . Bauxite residue consists of fine-grained sub clay minerals and has a diverse range of chemical and mineral components similar to clay (Atan et al , 2021; Song et al , 2021) The bauxite residue powder exhibits remarkable thermal stability, strong reinforcement, outstanding flame retardancy, and excellent aging resistance
Chapter 4 Classification of Bauxites - ScienceDirect Historical record of bauxite formations The oldest larger bauxite deposits so far observed occur in Early Palaeozoic sediments STRACHOW (1961) tried to compile the known deposits in chronological order He found that bauxite was often associated with coal or sedimentary iron ores of neighbouring areas
Provenance and genesis of karstic bauxite deposits in China . . . The bauxite-bearing rock series of the karstic bauxite deposits is primarily composed of bauxite and claystone interlayers, and the bauxite primarily is light gray in color (Fig S1K and L) and exhibits oolitic, clastic, and nodular textures (Fig S2G and H; Zhang et al , 2022)
Research progress on the enrichment of gallium in bauxite Bauxite is the product of surface weathering under humid tropical–subtropical conditions, and is one kind of aluminum hydroxides and oxides containing Si, Fe, and Ti (Bárdossy, 1982, Bárdossy and Aleva, 1990) The aluminum hydroxides in bauxite mainly consists of gibbsite [Al(OH) 3], boehmite [γ
Genesis of Danping bauxite (Northern Guizhou, China) and associated . . . In northern Guizhou, the average Li content of bauxite in Xinmin and Wachangping bauxite deposits is 1436 and 1132 ppm, respectively, (Long et al , 2021; Jin et al , 2023 The largest lithium clay deposit, located in the McDermitt crater of Nevada, USA, has average Li content of ∼2000 ppm ( Castor and Henry, 2020 )
Bauxite residue issues: II. options for residue utilization Bauxite is commonly used directly in cement making as a source of alumina and iron for the production of both Portland and calcium aluminate cements The global usage of bauxite in this application in 1999 was estimated at 1 0–1 2 Mtpa, making its use as a cement additive the largest non-metallurgical use of bauxite (Kogel, 2006)