STudy of the physicomechanical properties of modified raw
Sep 07 2010 · Results are given for a study of the dependence of apparent density and ultimate strength in compression on the quantity of silica and form of modifying addition (Al Si B and mixtures of them) for materials of the composition Al2O3SiCC based on high-alumina cement and aluminochromium phosphate binder after low-temperature (400°C) heat treatment. It is established that the most
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Alumina Refractory BricksRS Refractory Materials Supplier
Alumina Refractory Bricks Manufacturer. Rongsheng is an alumina bricks manufacturer that sales all kind of refractory bricks. Zhengzhou Rongsheng Kiln Refractory Co. Ltd established in the early 90s of twenty century located in the foot of Mount Song a place of Xinmi city which is in the middle of Zhengshao Expressway.The abundant high quality materials and convenient transportation
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Heat-resistant silicon carbide refractories for
Novel Al2O3-SiC-C (ASC) refractories were considered in this work. The corrosion resistance of ASC refractories and a conventional Cr2O3-Al2O3-ZrO2 (CAZ) refractory was evaluated in air and in
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Synthesis and sintering of chromium-free complex spinels
Magnesia-chrome refractory ceramics are used in non-ferrous industry because of their corrosion resistance against fayalite-type slags rich in FeO. Unfortunately Cr³⁺ may oxidize to Cr⁶⁺ during the smelting and converting processes thus making their spent pot-lining hazardous. Two strategies are explored in this present work to develop chrome-free refractories sinterable at lower
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Refractory Experts——Beijing Allied Rongda
The development and application of refractories for the platform of blast furnaces Iron Making Vol.21 Suppl. March 2002 6 Wu xingrong Cao feng Tian feng Zhou lei. The effect of sintering additive to the performance of ramming material of Al2O3-SiC-C. Refractory 2002 36 2 80 82
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Novel Al2O3‐C Refractories with Less Residual Carbon Due
A new generation of thermal shock resistant Al2O3‐C refractories with additives of carbon nanotubes and alumina nanosheets were developed. With the aid of EBSD analyses on fracture surfaces of the ca
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Corrosion mechanism of Al2O3–SiC–C refractory by SiO2–MgO
Dec 15 2020 · In the current study the Al 2 O 3 –SiC–C refractories were selected to conduct static resistance tests with SiO 2 –MgO-based slag in air and reducing atmospheres. The results show favorable corrosion resistance but poor permeability resistance in both atmospheres.
Get PriceGrowth mechanism of in situ diamond-shaped mullite
The microstructure evolution and properties of Al2O3–SiC–C refractories with different Fe2O3 content (0 0.5 1.0 wt ) heat-treated at 1400 °C were investigated.
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Refractory Experts——Beijing Allied Rongda
The development and application of refractories for the platform of blast furnaces Iron Making Vol.21 Suppl. March 2002 6 Wu xingrong Cao feng Tian feng Zhou lei. The effect of sintering additive to the performance of ramming material of Al2O3-SiC-C. Refractory 2002 36 2 80 82
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Study On Application Of Alumina In High-Purity
Andalusite (Al2O3 SiO2) is a member of the alumino-silicate minerals. Because of having excellent high temperature volume stability mechanical strength thermal shock resistance and creep resistance the refractories made from andalusite have been used in many industrial fields such as metallurgical industry building materials industry and others 1-7 .
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Novel Al2O3‐C Refractories with Less Residual Carbon Due
A new generation of thermal shock resistant Al2O3‐C refractories with additives of carbon nanotubes and alumina nanosheets were developed. With the aid of EBSD analyses on fracture surfaces of the ca
Get PriceEffect of firing atmosphere on the microstructure and
Al 2 O 3 –SiC–C (ASC) castables were performed using brown fused alumina as aggregates silicon carbide white fused alumina ultrafine α-Al 2 O 3 microsilica calcium aluminate cement silicon powder and ball pitch as matrixes.Microstructural observations and analysis of the effects of firing atmosphere and Si powder addition were investigated in this paper.
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AbstractsUNITECR 2017
Partnership in Materials and Technology unitecr2017 contact unitecr2017 The Uni˜ed International Technical Conference on Refractories 15th Biennial Worldwide Congress on Refractories
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Research on Corrosion Resistance of Al2O3-MgAl2O4
Spinel-containing refractory is a kind of potential chromium-free refractory for coal gasification because MgAl 2 O 4 spinel has good slag resistance. Corundum-spinel refractories with w(Al 2 O 3)=94 w(MgO)=5 and SiC-spinel refractories with w(SiC)=64 w (Al 2 O 3)=5 were prepared.The crucible specimens were tested for slag corrosion with commercial gasifier slag at 1 500°C for 1 h in
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Dynamic Testing of Gasifier Refractory
SiC refractory compositions 2–6 . In general chrome oxide additions to refractory compositions were found to improve their slag resistance. For example the studies conducted to determine the stability of Al2O3-rich refractories show that the higher the Cr2O3
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STudy of the physicomechanical properties of modified raw
Sep 07 2010 · Results are given for a study of the dependence of apparent density and ultimate strength in compression on the quantity of silica and form of modifying addition (Al Si B and mixtures of them) for materials of the composition Al2O3SiCC based on high-alumina cement and aluminochromium phosphate binder after low-temperature (400°C) heat treatment. It is established that the most
Get PriceDevelopment of Low Cement Castables of the Al2O3SiCC
The use of refractory castables as a material for the lining of runners of blast furnaces is considered. LC- and ULC-type castables are developed in conformance with modern technological requirements and environmental standards. Coal-tar resin as an environmentally friendly alternative to coal-tar pitch is proposed. SiC-containing regenerates (SiC-containing fireclay sagger scrap) are proposed
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Novel Al2O3‐C Refractories with Less Residual Carbon Due
A new generation of thermal shock resistant Al2O3‐C refractories with additives of carbon nanotubes and alumina nanosheets were developed. With the aid of EBSD analyses on fracture surfaces of the ca
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Member of refractory and lining technology team
1. Chuanyu Bie Shaobai Sang Yawei Li Tianbin Zhu Yibiao Xu Research of Al 2 O 3-SiC-C refractories as chromia-free lining for gasifier. Ceramics International 2016 42(12) . 2. Ren Bo Sang Shaobai Li Yawei Xu Yibiao Effects of oxidation of SiC aggregates on the microstructure and properties of bauxite–SiC composite
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Castable Scientific
Abstract The effects of B 4 C addition on the room temperature physical properties and hot mechanical properties of MgO-SiC based refractory castables were investigated using magnesia and SiC fines as starting materials and silica fume as a binder. The microstructure was characterized by scanning electron microscopy (SEM). The results showed that drying strength of MgO-SiC based castables
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Vaporization and Corrosion of Refractories in the Presence
Dec 20 2004 · The corrosion and vaporization behavior of eight commercial refractories containing Cr 2 O 3 were investigated under simulated pressurized pulverized coal combustion (PPCC) conditions at 1723 K in the presence of liquid slag. The corrosion resistance of the refractory materials decreased with increased content of free Cr 2 O 3 because bursting (reaction of Fe 3 O 4 with Cr 2 O 3) occurred.
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(PDF) 2010- Industrial Ceramics -Effect of deflocculants
2010- Industrial Ceramics -Effect of deflocculants on microsilica containing ultra low Al2O3–SiC–SiO2 refractory castable
Get PriceInvestigations on the properties of Al2O3–MgO refractory
sintered SiC/AlN ceramic composites Dina H A Besisa Emad M M Ewais Yasser M Z Ahmed et al.-The Effect of Alumina Dispersant Powder on the Workability of Chromia Based Refractory for IGCC Application Zhao Jing Ming Yang Zheng Xun Hwang Kyu Hong et al.-This content was downloaded from IP address 207.46.13.200 on 07/05/2020 at 02 30
Get PriceCorrosion mechanism of Al2O3–SiC–C refractory by SiO2–MgO
In the current study the Al2O3–SiC–C refractories were selected to conduct static resistance tests with SiO2–MgO-based slag in air and reducing atmospheres. The results show favorable corrosion
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CONGRESS UNITECR 2017
Roles of boron carbide in al2o3-c refractories using mwcnts as carbon source Thermal shock resistance of mgo-c slide plate materials with modified magnesia aggregates addition Inclusions in steel with a high al content and casting temperature after corrosion tests in carbon free and containing refractories
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CONGRESS UNITECR 2017
Pablo Valenzuela Y. PRESIDENT UNITECR 2017. Dear Colleagues. The Organizing Committee of UNITECR 2017 has been enthusiastically working for more than a year to provide the best congress for refractory specialists from around the world not only in the technical program but also in
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