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refractory materials journal thermal conductivity

  • Thermal Conductivity of Refactory Materials. | Journal

    2019-10-18 · Nonmetallic crystals with high thermal conductivity. Journal of Physics and Chemistry of Solids 1973 , 34 (2) , 321-335. DOI: 10.1016/0022-3697(73)90092-9.

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  • Thermal Conductivity of Refactory Materials (Journal ...

    OSTI.GOV Journal Article: Thermal Conductivity of Refactory Materials. Thermal Conductivity of Refactory Materials. Full Record; Other Related Research

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  • Thermal conductivity of some refractory materials ...

    1961-7-1 · Thermal conductivity of some refractory materials. ... Access options Buy single article. Instant access to the full article PDF. US 39.95. Price includes VAT for USA. Subscribe to journal. Immediate online access to all issues from 2019. Subscription will auto renew annually. ... V.V. Thermal conductivity of some refractory materials ...

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  • Prediction of Effective Thermal Conductivity of Refractory ...

    June 2016 Prediction of Effective Thermal Conductivity of Refractory Materials at High Temperatures 185 The bulk density and the open porosity of the coked samples were determined according to the standard DIN EN993–1 using the toluene displacement method.

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  • refractory materials metallurgical thermal conductivity

    The thermal conductivity of refractories. 2020-10-13 · As a means of,comp!aring the thermal 'conductivities of refractory materials the measured. h~at-input. metho,d possesses'the advantages of simplicity and ease of olpera­ tion.

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  • THE THERMAL CONDUCTIVITY OF SOME

    This investigation has shown that many of the previous determinations of thermal conductivity may have had little precision due to a lack of appreciation of the errors involved. The values of thermal conductivity for a number of refractories are given, as obtained by a new type of apparatus designed to eliminate to a considerable extent the ...

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  • Thermal Conductivity of Refractory Brick - RUH - 1962 ...

    Thermal conductivity measurements were made on many types of refractory brick including high‐alumina, fireclay, silica, chrome, magnesia, forsterite, zircon, silicon carbide, and insulating brick. These measurements, made with a modified ASTM C 201–47 apparatus, covered mean specimen temperatures of 200° to 2000°F.

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  • Thermal Conductivity of Refractory Castables - RUH -

    Thermal conductivity measurements were made on various refractory castabales of both dense fireclay and high-alumina types as well as on several insulating castables. These tests, covering mean specimen temperatures of 200° to 2000°F, indicated how the thermal conductivity of a castable material varies with thermal …

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  • THERMAL CONDUCTIVITY OF REFRACTORY

    Abstract. Thermal conductivity data are given for 20 insulating and three dense refractory Lumnite cement concretes. Data for 15 concretes were found in good agreement with a curve established by the authors to show the relationship between thermal conductivity and unit weight of the concrete, whereas the data for the remaining eight concretes deviated from the curve by more than 5%, i.e., in ...

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  • Thermal conductivity of porous materials | Journal of ...

    2013-7-3 · In this work, the effective thermal conductivity of porous materials containing pore volume fractions (ν p) from 0.04 to 0.95 has been studied. In order that a representative value of thermal conductivity is obtained, the choice of a suitable measurement technique is guided by the comparison of pore size to overall test sample dimensions.

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  • Thermal conductivity of insulating refractory materials ...

    2021-5-8 · The thermal conductivity is, then, calculated using Eq. 4: (4) λ = α ρ C p where λ is the thermal conductivity [W m-1 K-1], α the thermal diffusivity [m 2 s-1], ρ the bulk density [kg m-3] and C p the specific heat capacity [J kg-1 K-1]. For more complex formulations, C p can be estimated from data for simple components using the rule of ...

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  • Thermal Conductivity of Refractory Castables, Journal

    Thermal conductivity measurements were made on various refractory castabales of both dense fireclay and high‐alumina types as well as on several insulating castables. These tests, covering mean specimen temperatures of 200° to 2000°F, indicated how the thermal conductivity of a castable material varies with thermal history. The measurements were made using a modified ASTM C 201–47 apparatus.

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  • Prediction of Effective Thermal Conductivity of Refractory ...

    June 2016 Prediction of Effective Thermal Conductivity of Refractory Materials at High Temperatures 185 The bulk density and the open porosity of the coked samples were determined according to the standard DIN EN993–1 using the toluene displacement method.

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  • Thermal conductivity of high porosity alumina

    2013-12-1 · 1. Introduction. Recent urgent demands for reduced energy consumption and efficient energy usage require high performance thermal insulation materials. 1 Such demands have been made in the field of refractory materials. Because conventional refractory bricks have good heat-resistance performance and can be produced at low cost, 2 they have relatively poor thermal insulation …

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  • Thermal properties of fifteen refractory materials ...

    2012-8-16 · Thermal properties of fifteen refractory materials (Thermal conductivity, specific heat and linear thermal expansion of fifteen refractory materials)

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  • journal J. Am. Ceraffl. Soc.. 73 [8] 2316-22 (1990)

    2019-2-4 · journal J. Am. Ceraffl. Soc.. 73 [8] 2316-22 (1990) Simultaneous Determination of Thermal Conductivity and Specific Heat for Refractory Materials Kai Hot and Robert D. Pehlke Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136 The present work describes a transient method for determin-

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  • Thermal Conductivity of Refractory Brick - RUH - 1962 ...

    Thermal conductivity measurements were made on many types of refractory brick including high‐alumina, fireclay, silica, chrome, magnesia, forsterite, zircon, silicon carbide, and insulating brick. These measurements, made with a modified ASTM C 201–47 apparatus, covered mean specimen temperatures of 200° to 2000°F.

    Get Price
  • Int. Journal of Refractory Metals and Hard Materials

    2016-3-14 · high thermal conductivity values (~100–172 W/mK) [16].Qiaoetal. have reported that after sintering at 1650 °C, dense AlN ceramics with a thermal conductivity of 148 W/mK were prepared by the simulta-neous addition of 2 wt.% CaF 2 and 2 wt.% Y 2O 3 [17]. In addition to the sintering aids mentioned above, several attempts

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  • Simultaneous Determination of Thermal Conductivity

    The present work describes a transient method for determining thermal properties of refractory materials. Specific to this technique are (1) the experimental measurement of heat flux on the heated surface and (2) a method of data analysis based on the numerical techniques of …

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  • Ladle Furnace Refractory Lining: A review

    2016-7-12 · the temperature of the cold surface (K), and L the refractory thickness (m). The quantity is negative because heat transfer is contrary to the direction of the heat gradient. Thermal conductivity varies between different refractory materials, and with temperature, for …

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  • thermal conductivity of refractory materials

    Thermal conductivity of refractory materials Pustovalov Investigating variations in thermal conductivity of refractory materials used as heat insulators Addeddate 07 18 42 Documentid Identifier nasa_techdoc_ Identifier-ark ark /13960/t55d9hq97 Ocr ABBYY FineReader 8.0 Ppi 300 Rights Public Domain Year 1970 . plus-circle Add Review.

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  • A review of carbon-based refractory materials and their ...

    2020-12-2 · The Journal of the Southern African Institute of Mining and Metallurgy 641 OBR 2020 A review of carbon-based refractory materials and their applications B.M. Thethwayo1 and J.D. Steenkamp2,3 ... layers of different materials based on their thermal conductivity, gas permeability, temperatures the ...

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  • journal J. Am. Ceraffl. Soc.. 73 [8] 2316-22 (1990)

    2019-2-4 · journal J. Am. Ceraffl. Soc.. 73 [8] 2316-22 (1990) Simultaneous Determination of Thermal Conductivity and Specific Heat for Refractory Materials Kai Hot and Robert D. Pehlke Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136 The present work describes a transient method for determin-

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  • Numerical Prediction of Effective Thermal Conductivity of ...

    June 2014 Numerical Prediction of Effective Thermal Conductivity of Refractory Materials 147 ducing environment at either 1000°C or 1400°C for 5 h. The open porosity, bulk density and pore size distribu-tion were determined using a mercury porosimeter.

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  • Int. Journal of Refractory Metals and Hard Materials

    2016-3-14 · high thermal conductivity values (~100–172 W/mK) [16].Qiaoetal. have reported that after sintering at 1650 °C, dense AlN ceramics with a thermal conductivity of 148 W/mK were prepared by the simulta-neous addition of 2 wt.% CaF 2 and 2 wt.% Y 2O 3 [17]. In addition to the sintering aids mentioned above, several attempts

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  • Int. Journal of Refractory Metals and Hard Materials

    2017-5-9 · Materials Density (g/cm3) Young's modulus (GPa) Thermal conductivity (W/(m·K)) Hardness (GPa) Poisson's ratio PCD 3.3–3.7 810 700 50–60 0.070 Si 3N 4 3.4 260–320 1.67–2.09 30–32 0.250 44 Y. Zhao et al. Int. Journal of Refractory Metals and Hard Materials 50 (2015) 43–52

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  • Thermal Conductivity of Aloji Fireclay as Refractory ...

    This investigation was concentrated on the thermal behavior and insulating property of the Aloji fireclay for its suitability of being used as refractory lining. The Aloji fireclay brick has thermal conductivity of 0.05 K (W/m.k). Heat capacity of the brick was 0.5 J/g 0C at the minimum temperature of 93.33 0C as compared to 0.3 J/g 0C obtained at the maximum temperature of 600 0C.

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  • (PDF) Characterizations of Semi-Silica Refractory

    2.3.6Thermal Conductivity As mentioned the thermal conductivity of solid bricks can be lowered by the introduction of air space (pores).The lower coefficient of heat transfer is due to the fact that the conductivity of air is only one hundredth (0.02 of the conductivity of the solid phase(2.0 ).The conductivi- ty of refractory bricks must be ...

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  • A steady-state high-temperature method for

    2013-5-14 · A new methodology and an instrumental setup for the thermal conductivity estimation of isotropic bulk graphite and different carbides at high temperatures are presented. The method proposed in this work is based on the direct measurement of temperature and emissivity on the top surface of a sample disc of known dimensions. Temperatures measured under steady-state thermal equilibrium …

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  • silicon carbide ceramic plate brands thermal

    band heater uk Manufacturers and Suppliers - Good Supplier Ceramic Heater Bands With Insulation Blanket For Large Injection Molding Machine Product Description Mica heater is a highly efficient thermal division of the heater, excellent thermal conductivity of the metal alloy to ensure that the hot surface temperature uniformity, eliminating the hot and cold spots of the device.

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  • A review of carbon-based refractory materials and their ...

    2020-12-2 · The Journal of the Southern African Institute of Mining and Metallurgy 641 OBR 2020 A review of carbon-based refractory materials and their applications B.M. Thethwayo1 and J.D. Steenkamp2,3 ... layers of different materials based on their thermal conductivity, gas permeability, temperatures the ...

    Get Price
  • thermal conductivity of refractory materials

    Thermal conductivity of refractory materials Pustovalov Investigating variations in thermal conductivity of refractory materials used as heat insulators Addeddate 07 18 42 Documentid Identifier nasa_techdoc_ Identifier-ark ark /13960/t55d9hq97 Ocr ABBYY FineReader 8.0 Ppi 300 Rights Public Domain Year 1970 . plus-circle Add Review.

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  • Thermal conductivity of refractory glass fibres

    2021-3-18 · thermal conductivity of refractory glass fibre products have been reviewed. Refractory glass fibres are normally pro-duced in the form of low-density needled mats. A major issue with thermal conductivity measurements of these materials is lack of reproducibility in the test results due to transformation of the test material during the test. Also

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  • Eucken, A. (1932) Thermal Conductivity of Ceramic ...

    Eucken, A. (1932) Thermal Conductivity of Ceramic Refractory Materials, Calculation from Thermal Conductivity of Constituents. Ceramic Abstracts, 11, 353-360. has been cited by the following article: TITLE: Fabrication, Microstructure, Thermal and Electrical Properties of Copper Heat Sink Composites

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  • Review and Applications of Thermal Conductivity

    Silicon nitride bonded silicon carbide (Si 3 N 4 -SiC) refractories are commonly used as the sidewall of aluminum electrolysis cells. They have to withstand an extremely corrosive molten electrolyte bath for long periods. The sidewall is normally protected with a layer of solidified electrolyte (called frozen ledge), which is sensitive to the thermal conductivity of the sidewall.

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  • Review of Refractory Materials for Alkali Metal

    2012-5-23 · A review of refractory metal alloys and mechanically alloyed-oxide dispersion strengthened steels for space nuclear power systems Journal of Nuclear Materials, Vol. 340, No. 1 AMTEC/TE static converters for high energy utilization, small nuclear power plants

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  • Novel Porous Refractory Synthesized from

    The refractory has high porosity and low thermal conductivity reponded to requirements of saving energy for the thermal equipments. More important, the novel porous refractory products have high shape stability when observed by heating microscope in a range of room temperature to over 1400 o C.

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  • A Study of Selected Kenyan Anthill Clays for Production

    2017-9-12 · temperatures. Refractory materials are used in linings for furnaces, kilns, incinerators and reactors. Depending on the operating environment, they need to be resistant to thermal shock and have specific ranges of thermal conductivity and coefficient of thermal expansion. The ability to withstand exposure to heat

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  • Refractory Metals: An A to Z of Applications

    2020-12-22 · Refractory metals are a broad category of metallic materials that display excellent durability to thermal and mechanical stress. Their shared properties include resistance to corrosion and wear, high melting points, retention of mechanical strength at high temperatures, and …

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  • Material Properties of Refractory Concrete under High ...

    The paper presents the validation of physical properties of refractory concrete with heavy filling, using the measurements under high temperature, assumed for the construction of a thermal storage. The whole system, consisting of the storage core and of the insulation container, is characterized by non-stationary thermal transfer, supplied from solar radiation into the core.

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  • Thermal Conductivity of Refractory Brick, Journal of

    Thermal conductivity measurements were made on many types of refractory brick including high‐alumina, fireclay, silica, chrome, magnesia, forsterite, zircon, silicon carbide, and insulating brick. These measurements, made with a modified ASTM C 201–47 apparatus, covered mean specimen temperatures of 200° to 2000°F. The results are compared with other published data.

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  • Thermal Conductivity of Refractory Materials |

    The study of thermal conductivity of refractory materials continues to remain important even today. This is so, because, generally speaking, the investigations carried out so far applied only to particular cases and were marked by limitation of techniques and by the small number of systematic determinations.

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  • refractory materials of silica thermal conductivity

    Thermal conductivity of high porosity alumina . 2017-7-10 · Thermal conductivity represents the amount of heat per in unit area, unit time and unit temperature gradient in the energy transfer process. At 1000 ℃The thermal conductivity of various refractory bricks rate as shown below. The thermal conductivity of different materials … Get Price

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  • Influence of Pore Nature on the Thermal Conductivity

    2003-12-7 · This work investigates the influence of pore nature on thermal conductivity of insulating refractory brick. The starting material used to compose the insulating bricks is kaolinite clay while saw dust of different grain sizes was used as combustible.

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  • REVIEW AND APPLICATIONS OF THERMAL

    2020-1-27 · Silicon nitride bonded silicon carbide (Si3N4-SiC) refractories are commonly used as the sidewall of aluminum electrolysis cells. They have to withstand …

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  • International Journal of Refractory Metals & Hard Materials

    2 has limitations in its low thermal conductivity and inadequate fracture toughness at room temperature. These problems can be ad-dressed by adding a reinforcement with a high thermal conductivity and by fabricating nanostructured composites with improved thermal conductivity and fracture toughness [1,2]. Specifically, Mo has a high

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  • Development and Testing of a High Thermal

    Refractory systems are used for tube wall protection in waste-to-energy (WTE) boilers. Through the years, continuous adjustments have been made to the refractory materials and product designs. Design modifications have incrementally improved tile systems from bolt-on to hidden-clip to back-cast systems.

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  • Controlling thermal emission with refractory epsilon

    2016-6-6 · Journal info rmation; Publish with ... lattice structure with refractory materials tungsten and hafnium oxide in stark contrast ... the unique photonic thermal conductivity and thermal energy ...

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  • MODEL FOR PREDICTING MIX FORMULATION IN THE

    thermal conductivity of refractory bricks produced from Osiele and Ukpor clay are shown in Equation 1 and 2 respectively. Where K stands for thermal conductivity and x stands for weight percentage composition of coconut shell. ?1=− y× s r−9 3− t× s r−5 2− r. r r s t + r. s r r v ( s)

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  • Mechanical Properties and Thermal Conductivity of ...

    Various Ytterbium-Silicate-Mullite composites were successfully fabricated by adding Yb2SiO5 into mullite ceramics and then using pressureless sintering at 1550 °C. The influence of Yb2SiO5 addition on the microstructure, mechanical properties, and thermal conductivity of ytterbium-silicate-mullite composites was investigated. Results show that the composites mainly consisted of a mullite ...

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