نتایج جستجو برای: bauxite deposit
تعداد نتایج: 18181 فیلتر نتایج به سال:
This study illustrates the application of conditional simulations to calculate uncertainty associated with thickness bauxite ores. The deposit Rondon do Pará in northern State, Brazil, is characterized by a well-defined lateritic profile, ore being composed two sequential horizons: massive and ferruginous bauxite. used data from 1.005 drillholes different grid spacing. Drillhole intervals both ...
Bauxite residue is the alkaline byproduct generated when alumina is extracted from bauxite ores and is commonly deposited in impoundments. These sites represent hostile environments with increased salinity and alkalinity and little prospect of revegetation when left untreated. This study reports the establishment of bacterial communities in bauxite residues with and without restoration amendmen...
چکیده ندارد.
Minerals, depending on their composition and origin, contain some radioactive nuclides. Presence of such radionuclides such as 238U, 232Th and 40K in materials are dangerous when they are highly concentrated and influence on human exposure. Bauxites as a raw material for aluminum may contain relatively high amount of those radionuclides, which are more concentrated in remained red-mud after Al ...
Background. The Cretaceous of southern Europe was characterized by an archipelago setting with faunas of mixed composition of endemic, Laurasian and Gondwanan elements. However, little is known about the relative timing of these faunal influences. The Lower Cretaceous of East-Central Europe holds a great promise for understanding the biogeographic history of Cretaceous European biotas because o...
Due to limited reserves of bauxite, nepheline can be used in the industrial production alumina Kazakhstan. The most promising deposit is syenites Kubasadyr deposit. Currently, there no effective technology for processing ores. High energy intensity, capital intensity and significant emissions into atmosphere are main drawbacks conventional ore by sintering method. Efficient hydrochemical requir...
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