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Showing 1 to 20 of 526 for “"refractory"”.
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Kinetics of refractory solution
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Metallurgy, 1960.
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Metolazone in Diuretic Refractory Ascites
Background: Refractory ascites occurs in about 10% of patients with cirrhosis and ascites. Available treatment options are invasive and costly procedures with significant complication rates. We hypothesized that adding metolazone; thiazide like diuretic, to conventional diuretics in these diuretic …
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The development of a plastic refractory
… made of the possibilities of producing a plastic refractory using calcined kyanite, raw kyanite a refractory clay of high plasticity and sodium silicate as an air setting ingredient. Using 35 mesh calcined kyanite, 35 mesh raw kyanite, 100 mesh raw kyanite, 20 mesh A-l Sagger Mix refractory clay …
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Enhanced copper recovery from Chingola refractory ore
The Chingola Refractory Ore (CRO), in Zambia’s Copperbelt province, represents a significant copper resource, with more than 150 million tonnes in stockpiles since the 1950s. CRO contains 0.99 wt.% Cu, primarily in the form of cupriferous micas, with lesser amounts of copper found in malachite, …
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Behavior of refractory linings for slagging gasifiers
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1984.
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Microfabricated refractory ceramic structures for micro turbomachinery
… selection of CVD SiC as the primary candidate refractory material for the microengine, and the initial experiments performed to assess its suitability and guide future material and process development.
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Alkali attack of coal gasifier refractory linings
Thermodynamic calculations are used to study the alkali reactions in coal gasifier atmospheres. The reactive alkali and sulfur species released from coal are first calculated at temperatures from 800 K to 1900 K and pressures from 1 atm to 100 atm. Four P-T diagrams are constructed for the stable …
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Alkali attack on coal gasifier refractory lining
… the kinetics of alkali diffusion into the refractory were experimentally determined as a function of time and temperature. The results, both experimental and theoretical, show formation of alkali-aluminate (Na₂O⋅Al₂O₃, K₂O⋅Al₂O₃) and β-alumina (Na₂O⋅11Al₂O₃, K₂O⋅11A₂O₃) compounds with …
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Alkali attack of coal gasifier refractory lining
… gasifiers. The reaction products that form when refractory linings in coal gasifiers are exposed to alkali impurities (sodium or potassium) were experimentally determined. Analysis of selected physical and chemical properties of the reaction products, which typically form between the alkali and …
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Refractory oxides based multilayered core@shell plasmonic nanostructures
… (gold, silver, copper, and aluminium) to include refractory materials such as metal nitrides, silides, germanides and many other compounds and 2D materials such as graphene, alternative plasmonic materials with optical properties comparable to noble metals but can operate effectively in …
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Processing and irradiation-driven evolution of refractory microstructures
… evolution and material performance of refractory metals and ceramics through two lenses: one driven by processing under non-equilibrium conditions, and the other driven by non-equilibrium or extreme environments experienced during service-like conditions (specifically, under …
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Compressive behavior of refractory ceramics at elevated temperatures
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1989.
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MOLTEN STEEL INTERACTIONS WITH TUNDISH LININGS AND REFRACTORY GLAZES
… may be modified through the reduction of refractory components. There is a possibility that glaze may influence the accretion and transformation of this material"--Abstract, p. iv</p>
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Some observations on the refractory period of the heart
… of quinidine for their treatment, the refractory period has assumed an increasingly important ró le in understanding the pathology and the therapeutics of many disorders of cardiac contraction. A thorough knowledge of its physiology, therefore, is of great importance. Unfortunately, …
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Microstructural Evolution in Refractory Metal Multi-Component Alloy Systems
… for alternative high temperature materials. Refractory superalloys based on AlTaTiZr and AlMoNbTaTiZr have attracted particular interest, as early studies indicate that the essential attributes for elevated temperature service are accessible within this class. The principal challenge is that …
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Mechanical testing of rapid-prototyping refractory ceramic print media
Additively manufactured (3D-printed) refractory alumina-silica ceramics were mechanically tested to ascertain their ultimate tensile strengths and observed to determine their dimensional consistency over the printing and post-printing process. The equipment used to perform tensile testing was …
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