نتایج جستجو برای: manganese ore

تعداد نتایج: 33731  

2012
Murali Krishna

Investigations were conducted to evaluate the performance of a two-stroke, single cylinder, spark ignition (SI) engine, with gasohol (80% gasoline and 20% ethanol by volume) having copper coated engine [CCE, copper-(thickness, 300 μ) coated on piston crown, inner side of cylinder head] provided with catalytic converter with different catalysts of sponge iron and manganese ore and compared with ...

Journal: :Izvestiya Visshikh Uchebnykh Zavedenii. Chernaya Metallurgiya = Izvestiya. Ferrous Metallurgy 2015

Journal: :American Journal of Science 1908

2015
Jena E. Johnson Samuel M. Webb Chi Ma Woodward W. Fischer

Oxidation of manganese (II) to manganese (III,IV) demands oxidants with very high redox potentials; consequently, manganese oxides are both excellent proxies for molecular oxygen and highly favorable electron acceptors when oxygen is absent. The first of these features results in manganese-enriched sedimentary rocks (manganese deposits, commonly Mn ore deposits), which generally correspond to t...

Journal: : 2022

Mineralogy, geochemistry and genesis of Temelieh Manganese ore Deposit (NorthWest Selseleh, Lorestan Province)

Journal: :Aquatic toxicology 2016
Alexandra Caroline da Silva Veronez Rômulo Victor Salla Vinícius Dadalto Baroni Indianara Fernanda Barcarolli Adalto Bianchini Claudia Bueno Dos Reis Martinez Adriana Regina Chippari-Gomes

For decades, the extraction of minerals has intensified in order to meet the demand of industry. Iron ore deposits are important sources of metals, such as iron (Fe) and manganese (Mn). The particulate ores can be dispersed during extraction, transport and storage, with potential to induce biological impacts. Amphibians are very sensitive to environmental stressors. Therefore, the present study...

Journal: :Journal of the Mineralogical Society of Japan 1963

Bayati, , Bonyadi, , Hosseini, , Mehrdad, ,

Mehdiabad zinc-lead-barite deposit is located in the Central Iran structural zone and about 116 km southeast of Yazd. The host rock of this deposit is Lower Cretaceous dolomitic limestone of the Taft Formation . The main ore minerals in the Mehdiabad East Ridge ore zone include hemimorphite, hydrozincite, cerussite, and chalcophanite. Ore textures are mainly replacement, brecciated, and open-sp...

ابراهیمی نصر آبادی, خسرو, حیدریان شهری, محمدرضا, شجاعی‌زاده اقدم, شیرین,

Estaj manganese deposit is located close to the Estaj village, 40 km southwest of Sabzevar, in Central Iran and Sabzevar subzone. Based on field evidences and microscopic studies, the rock units of the study area are pyroxene hornblende tracy Andesite, crystalin andesitic tuff, pyroxen hornblende andesite, pyroxen andesite- basalt, chert and limstone. These rock units belong to Late Cretaceous ...

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