1. Introduction. Bauxite, though generally exploited as an Al ore, can be a major source of a number of so-called critical metals, a definition arising from the soaring prices of all metals and supply problems for some (Herrington, 2013).These metals are usually deemed critical when they are considered to be vital for industry, in particular …
@article{Ahmadnejad2017MineralogicalAG, title={Mineralogical and geochemical evolution of the Bidgol bauxite deposit, Zagros Mountain Belt, Iran: Implications for ore genesis, rare earth elements fractionation and parental affinity}, author={Farhad Ahmadnejad and Hassan Zamanian and Batoul Taghipour and Alireza …
Most bauxite in China is located upon the karst surface, yet the relation between karstification process and bauxite formation is barely known. Here we discuss how the relation affects the karst ...
Key Words:Iran, karst bauxite, geochemistry, diaspore, ore deposit Jajarm (KD İran) Karst Boksit Cevher Yatağının Petrografisi ve Jeokimyası: Kaynak Kaya Materyali ve Cevher Kökeni İçin ...
Iranian bauxite deposits, which are part of the Irano-Himalayan belt, are spatially and temporally divided into five groups (Ahmadnejad et al., 2017) (Table 1; Fig. 1): (1) Permian deposits in northwestern and northeastern Iran including, for instance, the Darzi-Vali (Khosravi et al., 2017) and Jajarm (Esmaeily et al., 2010) bauxite deposits; …
Zr 80 – 337 66 30 – 183 208 – 27 2 50 – 220 61 98. Arab J Geosci (2017) ... Petrogra phy and geoche mistry of the Jajarm kars t bauxite ore de-posit: NE Iran: ...
Petrography and Geochemistry of the Jajarm Bauxite ore Deposit, Northeast Iran: Implications for Source Rock Material and Ore Genesis. Amir Esna-Ashari ...
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of Bauxite ore deposit in Iran. Gelvez et al. (2014) applied the AHP and the VIKOR methods to select optimum mining method in the coal mine in Colombia. Yavuz (2015) used AHP and Yager's method for selection of underground mining for Cifta-lan lignite mine in Istanbul. Karimnia et al. (2015) used AHP to select the better mining
The bauxite ore and bauxite clay sample plot mainly between karst bauxite and high‑iron lateritic bauxite, whereas other type sample plot the right side of the slope and are close to the carbonate, shale and basalt (Fig. 10). Given that regional geology, we tend to regard the underlying carbonate as the source rock of the Shanxi-type iron and ...
Karstic-type bauxite, which is defined within the bedrock as carbonate (Bárdossy, 1982, Calagari and Abedini, 2007, Deng et al., 2010), is widely distributed in the North China Block (NCB). The western Henan in the NCB contains approximately 1 billion tons of bauxite ore. Its geological, mineralogical, and geochemical features, as well as …
High chemical index of alteration (CIA) values of 88.25–98.57 (average 94.9) indicates that the bauxite of Jajarm has experienced strong to moderate chemical weathering ... (2010) Petrography and geochemistry of the Jajarm bauxite ore deposit, Northeast Iran: implications for source rock material and Ore Genesis. Turk J Earth Sci …
Iran's dormant bauxite project in Guinea-Conakry has recently sprung back to life, as companies operating it have announced an international tender for developing the mine and constructing a ...
Yunnan 48 955 Bauxite Ore and Claystone Guangxi 74 10.4 Bauxite Ore Guangxi 40 2590 Carbonaceous clays ~ 10 m carbonaceous rocks and coal seams Xinmin 67.1 360 Bauxite Ore 48.65 417 Bauxite Ore Danping 54.4 1004 Bauxite Ore Peach Garden 52.71 539 Bauxite Ore Wachangping 46.72 656 Bauxite Ore Wachangping 60.16 805 Bauxite …
Trace elements from samples of bauxite deposits can provide useful information relevant to the exploration of the ore-forming process. Sample digestion is a fundamental and critical stage in the process of geochemical analysis, which enables the acquisition of accurate trace element data by ICP-MS.
Bauxite is a sedimentary rock mineral that is the primary source of aluminum. It is formed through the weathering of aluminum-rich rocks in tropical and subtropical regions. The name bauxite is derived from the French village of Les Baux, where it was first discovered in 1821 by geologist Pierre Berthier. Bauxite is typically found in layers …
1. Introduction. Bauxite deposits can be classified by their bedrock into two main categories. Bauxite deposits overlying carbonates are called karstic bauxites; those lying on alumosilicate rocks are named lateritic bauxites (Bárdossy, 1982, Mameli et al., 2007).Vertical change in the ore qualities in bauxite is recognized to be an important …
The central part of the ZSFB comprises a series of small and medium-sized karstic bauxite deposits. Some of these deposits were recently reviewed by Zarasvandi et al., 2010, Zarasvandi et al., 2012, Zamanian et al. (2016), and Ahmadnejad et al. (2017).However, despite the growing interest in karst-type bauxite deposits as potential …
Crushed and washed bauxite ore must first go through a process to remove any silica found in the bauxite, which would otherwise hinder the process and result in a product of lesser quality. In a process known as digestion, after any silica has been removed, the remaining bauxite ore is combined with a hot caustic soda material in a heated ...
The most important bauxite deposits of Iran as well as other aluminum-rich deposits such as kaolinitic clays belong to Permian ... are important constituents of the …
In general, the ore-bearing rock series contains three units: lower iron-bearing claystone consisting of illite, chamosite, and goethite; middle bauxite ore dominated by diaspore, kaolinite ...
The most important bauxite deposits of Iran as well as other aluminum-rich deposits such as kaolinitic clays belong to Permian ... are important constituents of the Bidgol bauxite ore ... of 0.97, 0.99, 0.98, and 0.98, respectively (Fig. ...
The Jajarm bauxite deposit, northeast Iran, is the largest such deposit in Iran. The deposit is sandwiched between the Triassic Elika Formation and the Jurassic Shemshak Formation, housed within ...
The Iranian karst bauxite deposits are mainly low-grade aluminum ores. The Jajarm deposit in the AMC with reserves of more than 19 Mt of bauxite ores at an …
The depth of the gully ranged between 20 and 40 m. The sedimentary strata in the area were developed, especially the Carboniferous alumina-bearing clay rock system. The bauxite occurred in the middle stratum of the Benxi Formation (C2b) of the Middle Carboniferous. The main ore body occurrence elevations ranged between 499.98 and …
1. Introduction. The vast majority of aluminum is sourced from bauxite (Jiang et al., 2017, Qi et al., 2013, Sun and Lu, 2008), and bauxite can also be used for fire retardant, abrasives, chemicals, aluminous cement (Ran, 2012, Wang et al., 2012) and as a source of gibbsite and monohydrate diaspore (Ahmadnejad et al., 2017; Patterson and …
Bauxite, Iran: Mineralogy, Geochemistry, and Sulfur ... Tel.: +98-713-613-7457 Academic Editor: Pablo Cubillas Received: 23 March 2017; Accepted: 31 May 2017; Published: 12 …
Bauxite residue (BR) is generated as a by-product of the Bayer process. Approximately 1.2 tons of BR is generated per ton of alumina production but the quantity of bauxite residue depends upon on the quality of the processed bauxite ore and the processing parameter (Primary Aluminium Production).The annual generation of BR in …
Aluminium is derived from alumina (Al 2 O 3), which is obtained mainly by processing bauxite ore. Alumina production generates bauxite residue, commonly known as red mud 5.
The Sar-Faryab bauxite deposit, which is situated in the Mandan anticline, is the largest and most important bauxite deposit in the ZSFMB. The deposit was discovered by geological and geophysical surveys and contains estimated reserves between 750,000 t and 3 Mt of bauxite ore grading 37 to 40% Al 2 O 3 (Badri and Charchi, 2000). The …
The Bayer process is the principal method for the production of alumina from bauxite worldwide. The modern version of the process (developed in the 1880's) still maintains the key steps of dissolution of alumina-rich minerals into hot caustic solution, separation of the insoluble phases, followed by gibbsite precipitation and calcination of …
The Jajarm bauxite deposit, northeast Iran, is the largest such deposit in Iran. The deposit is sandwiched between the Triassic Elika formation and the Jurassic …
DOI: 10.1016/J.OREGEOREV.2008.05.005 Corpus ID: 129371979; Karst bauxite deposits in the Zagros mountain belt, Iran @article{Zarasvandi2008KarstBD, title={Karst bauxite deposits in the Zagros mountain belt, Iran}, author={Alireza Zarasvandi and Abbas Charchi and Emmanuel John Muico Carranza and Bahram Alizadeh}, journal={Ore Geology …
A new heterotrophic strain, named Providencia sp. JAT-1, was isolated and used in bioleaching of low-grade complex copper ore. The strain uses sodium citrate as a carbon source and urea as a nitrogen source to …
Bauxite recoveries in modern washing plants is in the range of 60–80%, however, in some of the plants, the recovery is found to be as low as 50%, as they use simple vibrating screens in place of hydro-cyclones. The quality of input bauxite, particularly silica content and targeted washed bauxite quality, dictate the washed ore recovery.
Alumina is produced from bauxite, which contains a mixture of various oxides, such as aluminum (Al), iron (Fe), silicon (Si), and titanium (Ti). Bauxite can also be considered a source of several other valuable metals, such as scandium (Sc), vanadium (V), and gallium (Ga). The composition and mineralogy of alumina determine their …