Bauxite

bauxiticBauxitesAluminium orealuminum miningBauxite Minerbauxite orebauxite productionLargest bauxite produceruranium
Bauxite is a sedimentary rock with a relatively high aluminium content.wikipedia
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Aluminium

aluminumAlall-metal
Bauxite is a sedimentary rock with a relatively high aluminium content. At these temperatures, the aluminium is dissolved as sodium aluminate (the Bayer process).
The chief ore of aluminium is bauxite.

Boehmite

bohmite
Bauxite consists mostly of the aluminium minerals gibbsite (Al(OH) 3 ), boehmite (γ-AlO(OH)) and diaspore (α-AlO(OH)), mixed with the two iron oxides goethite (FeO(OH)) and haematite (Fe 2 O 3 ), the aluminium clay mineral kaolinite (Al 2 Si 2 O 5 (OH)) and small amounts of anatase (TiO 2 ) and ilmenite (FeTiO 3 or FeO.TiO 2 ).
Boehmite or böhmite is an aluminium oxide hydroxide (γ-AlO(OH)) mineral, a component of the aluminium ore bauxite.

Gibbsite

bayeritehydrargillite
Bauxite consists mostly of the aluminium minerals gibbsite (Al(OH) 3 ), boehmite (γ-AlO(OH)) and diaspore (α-AlO(OH)), mixed with the two iron oxides goethite (FeO(OH)) and haematite (Fe 2 O 3 ), the aluminium clay mineral kaolinite (Al 2 Si 2 O 5 (OH)) and small amounts of anatase (TiO 2 ) and ilmenite (FeTiO 3 or FeO.TiO 2 ).
Gibbsite is an important ore of aluminium in that it is one of three main phases that make up the rock bauxite.

Les Baux-de-Provence

BauxLes BauxBaux-de-Provence
In 1821 the French geologist Pierre Berthier discovered bauxite near the village of Les Baux in Provence, southern France.
The name bauxite (Aluminium ore) is derived from the village name when it was first discovered there by geologist Pierre Berthier in 1821.

Jamaica

JAMJamaicanJamaica, West Indies
The growth was fuelled by high levels of private investment in bauxite/alumina, tourism, the manufacturing industry and, to a lesser extent, the agricultural sector.

Laterite

lateriticlateritic soilslateritization
Vadász (1951) distinguished lateritic bauxites (silicate bauxites) from karst bauxite ores (carbonate bauxites):
Laterites are a source of aluminium ore; the ore exists largely in clay minerals and the hydroxides, gibbsite, boehmite, and diaspore, which resembles the composition of bauxite.

Diaspore

Diaspore (mineral)
Bauxite consists mostly of the aluminium minerals gibbsite (Al(OH) 3 ), boehmite (γ-AlO(OH)) and diaspore (α-AlO(OH)), mixed with the two iron oxides goethite (FeO(OH)) and haematite (Fe 2 O 3 ), the aluminium clay mineral kaolinite (Al 2 Si 2 O 5 (OH)) and small amounts of anatase (TiO 2 ) and ilmenite (FeTiO 3 or FeO.TiO 2 ).
Diaspore, along with gibbsite and boehmite, is a major component of the aluminium ore bauxite.

Pierre Berthier

In 1821 the French geologist Pierre Berthier discovered bauxite near the village of Les Baux in Provence, southern France.
In 1821, while working in the village of Les Baux-de-Provence, in southern France, he discovered the rock bauxite, named for the place of its discovery.

Aluminium recycling

aluminum recyclingrecycledcashes in
Increased aluminium recycling, which has the advantage of lowering the cost in electric power in producing aluminium, will considerably extend the world's bauxite reserves.
The process involves simply re-melting the metal, which is far less expensive and energy-intensive than creating new aluminium through the electrolysis of aluminium oxide ( 2 3 ), which must first be mined from bauxite ore and then refined using the Bayer process.

Aluminium hydroxide

aluminum hydroxideAl(OH) 3 algeldrate
The remainder reports to the red mud and aluminium hydroxide streams.
These compounds together are the major components of the aluminium ore bauxite.

Mineral

mineralsmineral depositsaccessory mineral
Bauxite consists mostly of the aluminium minerals gibbsite (Al(OH) 3 ), boehmite (γ-AlO(OH)) and diaspore (α-AlO(OH)), mixed with the two iron oxides goethite (FeO(OH)) and haematite (Fe 2 O 3 ), the aluminium clay mineral kaolinite (Al 2 Si 2 O 5 (OH)) and small amounts of anatase (TiO 2 ) and ilmenite (FeTiO 3 or FeO.TiO 2 ).
Bauxites are the chief aluminium ore, and are a heterogeneous mixture of the hydroxide minerals diaspore, gibbsite, and bohmite; they form in areas with a very high rate of chemical weathering (mainly tropical conditions).

Guinea

Republic of GuineaGuineanGuinea-Conakry
It is the world's second largest producer of bauxite, and has rich deposits of diamonds and gold.

Guyana

GuyaneseBritish GuianaCo-operative Republic of Guyana
The main economic activities in Guyana are agriculture (production of rice and Demerara sugar), bauxite and gold mining, timber, shrimp fishing and minerals.

Ore

oresore depositmineral deposit
Vadász (1951) distinguished lateritic bauxites (silicate bauxites) from karst bauxite ores (carbonate bauxites):

Bayer process

Bayerextracting itprocess
At these temperatures, the aluminium is dissolved as sodium aluminate (the Bayer process).
The Bayer process is the principal industrial means of refining bauxite to produce alumina (aluminium oxide) and was developed by Carl Josef Bayer.

Hall–Héroult process

Hall-Héroult processaluminum extractionHall-Heroult Process
Next, this molten substance can yield metallic aluminium by passing an electric current through it in the process of electrolysis, which is called the Hall–Héroult process, named after its American and French discoverers.
It involves dissolving aluminium oxide (alumina) (obtained most often from bauxite, aluminium's chief ore, through the Bayer process) in molten cryolite, and electrolysing the molten salt bath, typically in a purpose-built cell.

Deville process

Deville sodium process
Prior to the invention of this process, and prior to the Deville process, aluminium ore was refined by heating ore along with elemental sodium or potassium in a vacuum.
The Deville process was the first industrial process used to produce alumina from bauxite.

Gallium

GaGa 2 67 Ga
Bauxite is the main source of the rare metal gallium.
Gallium does not occur as a free element in nature, but as gallium(III) compounds in trace amounts in zinc ores and in bauxite.

Cryolite

kryoliteSpar
This aluminium oxide is dissolved at a temperature of about in molten cryolite.
It was historically used as an ore of aluminium and later in the electrolytic processing of the aluminium-rich oxide ore bauxite (itself a combination of aluminium oxide minerals such as gibbsite, boehmite and diaspore).

Bauxite tailings

red mudbauxite wastered sludge
The remainder reports to the red mud and aluminium hydroxide streams. The undissolved waste, bauxite tailings, after the aluminium compounds are extracted contains iron oxides, silica, calcia, titania and some un-reacted alumina.
Red mud, or bauxite residue, is a side-product of the Bayer process, the principal means of refining bauxite en route to alumina.

Bauxite, Arkansas

BauxiteBauxite, AR
Located within Central Arkansas, the town is named for bauxite, the source ore for aluminium, which was found in abundant quantities in the area and became a source of aluminium refining.

Aluminium oxide

aluminaaluminum oxideAl 2 O 3
The undissolved waste, bauxite tailings, after the aluminium compounds are extracted contains iron oxides, silica, calcia, titania and some un-reacted alumina. , approximately 70% to 80% of the world's dry bauxite production is processed first into alumina and then into aluminium by electrolysis.
Aluminium hydroxide minerals are the main component of bauxite, the principal ore of aluminium.

Sodium hydroxide

caustic sodaNaOHsodium
Usually, bauxite ore is heated in a pressure vessel along with a sodium hydroxide solution at a temperature of.
In the Bayer process, sodium hydroxide is used in the refining of alumina containing ores (bauxite) to produce alumina (aluminium oxide) which is the raw material used to produce aluminium metal via the electrolytic Hall-Héroult process.

MS Bulk Jupiter

MS ''Bulk Jupiter
Early reports indicated that the likely cause of the sinking was sudden loss of stability from the bauxite cargo.

Sodium aluminate

At these temperatures, the aluminium is dissolved as sodium aluminate (the Bayer process).