Results 111 to 120 of about 395 (139)
The occurrence and potential origin of asphaltite in bedrock fractures, Forsmark, central Sweden
Gff, 2006 Occurrences of asphaltite in fractures in the Svecofennian basement have been documented in drill cores from the site investigation for a deep repository for nuclear waste in Forsmark, central Sweden.
Eva-Lena Tullborg, JOSÉ E Ortiz
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Minacar asphaltite: an asphaltite from Argentina
Fuel, 1972Abstract Minacar asphaltite, an asphaltic pyrobitumen or fossilized asphalt, has interesting characteristics. Its provenance, physical and chemical properties, analyses, ash characteristics, solvent extraction, carbonization products, and possibilities for improving the coke made from it are outlined.
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Asphaltites: Composition and Conversion
1995Turkey has insignificant reserves of crude oil and natural gas. Consequently, the amount of foreign currency spent on importation of petroleum and electricity is equivalent to the total exportation from the country. The increasing trend in crude oil prices, is an important threat to the industrialisation of Turkey.
Y. Yurum, E. Ekinci
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High-sulfur asphaltites of Argentina
Solid Fuel Chemistry, 2007The results of advanced study of the chemical nature of asphaltites from Rafaelita and Toribia fields, as well as the composition and structural features of their malthene, asphaltene-carbene, and carboid components are presented. It was found that the structural units in the molecules of isolated compounds are primarily based on fused tetra-and ...
V. V. Savel’ev +4 more
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Recovery of Uranium, Nickel, Molybdenum, and Vanadium from Floated Asphaltite Ash
Separation Science and Technology, 2004 In this study, asphaltite ash obtained from asphaltite was sulfurized under an autoclave condition, and then this sample was floated by two different xanthates.
Ziyadanogullari, R, Aydin, I
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Thermal liquefaction of natural asphaltites
Solid Fuel Chemistry, 2007Thermal transformations of high-sulfur asphaltites of Argentina were studied over a wide range of their heat treatment conditions: the final heating temperature from 350 to 600°C, the nature of the solvent used (water, deacon, tetragon, straight-run petroleum diesel distillates, the process mode (batch or flow), and the presence of a catalyst.
V. V. Savel’ev +4 more
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Importance of Asphaltite Deposits in Southeastern Anatolia
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2006Native energy sources of Turkey are quite limited, and the country is heavily dependent on the import of primary energy from abroad. The demand for electrical energy has increased very rapidly in Turkey due to the ongoing industrialization process and high population growth. Energy consumption in Turkey has continually increased over the past years and
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BRIQUETTING OF FINE SIZE ASPHALTITE WITHOUT BINDER
Mineral Processing and Extractive Metallurgy Review, 2005ABSTRACT In this study, the effects of particle size, moisture, briquetting pressure, and preheating temperature were investigated on briquetting without binder of Sirnak Asphaltite, having a particle size of—20 mm, 46.22% ash, 5.83% total sulphur content, and 4900 kcal/kg calorific value.
GÜLEN, Fatma Jale +4 more
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Thermal destruction of asphaltites in supercritical fluids
Russian Journal of Physical Chemistry B, 2010The processes of thermal destruction of asphaltites recovered from the Rafaelita and Toribia deposits in the presence of water, benzene, tetralin, and ethanol in the supercritical state are studied. The solvent nature plays an important role in the thermal destruction, with the maximum conversion (99 wt %) of both asphaltites into liquid products being
V. V. Saveliev, A. K. Golovko
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Producing adsorbents from nitrated asphaltites
Chemistry and Technology of Fuels and Oils, 2012Carbon adsorbents with mechanical strengths of 90-93% and a micropore volume of 0.16-0.3 cm3/cm3 have been obtained from nitrated asphaltites by the existing industrial technology. Compared to industrial carbon with the trademark KAD-iodine, medium-charred specimens are highly selective in extracting gold and silver from multicomponent polymetal ...
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