PURPOSE Despite the presence or absence of artificial sweeteners in cola drinks, both regular and diet soft drinks still contain phosphoric and citric acid, which contributes to the total acidic challenge potential on enamel. The purpose of this study was to assess the plaque pH, in vivo, after a substrate challenge of diet and regular soft drinks. METHODS Seventeen subjects were recruited fo...

Syrian petroleum coke, produced by a delayed coking unit, is characterized by a high percentage of fines which tends to reduce its commercial value. Blending coke fines using appropriate binders, such as bitumen and polyacrylic acid, can lead, however, to an improved coke that is similar in structure, appearance and other properties to better-quality coke lumps. In this work, samples of Syrian ...

Various traditional and industrial coke making techniques were discussed based on their limitations and production capacities, and the criteria such as the quality and size of coke production, amount of coke crumb, amount of investment, amount of operational costs, labor force and mechanization. In this work, the rankings of various traditional and industrial coke making techniques were carried...

Currently, the processes of oil industry are focused on deepening refining. One ways to deepen refining is obtain petroleum cokes at delayed coking plants. At moment, total productivity plants increasing, while output coke with a high sulfur content also growing, which does not allow it be used in typical consumption – metallurgical industry. In this regard, researchers actively exploring possi...

Production of iron through BF route is still a dominant route and coke is a major raw material and energy source for the blast furnaces. The process of coal carbonization in slot ovens is one of the major sources of atmospheric pollution in an Integrated Steel Plant. Coke making process involves coal preparation, carbonization and coke handling operations. To meet the demand of Blast Furnaces o...

Metallurgical coke with high strength and low reactivity is used in the ironmaking blast furnace. Replacement of some coking coal bio-coal was shown to result lower higher produced due introduction reactive carbon ash components catalyzing Boudouard reaction, but also lowering blend fluidity, which influences negatively. The current study aims investigate possibility counteract negative impact ...

The calcined petroleum cokes are used in production of aluminum anode-grade, graphite electrode, needle-grade, titanium dioxide pigments. Petroleum coke (green and calcined) is produced by the high pressure thermal decomposition of heavy petroleum process streams and residues. Green coke undergoes additional thermal processing to produce calcined coke. Various properties of calcined cokes from ...