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refractory materials used using method

  • Study of Alkali Resistance of Refractory Materials

    2017-4-18 · Using the ASTM C 454–83 method alkali resistance is studied for various refractories (chamotte brick, traditional and medium-cement chamotte concrete) used most often in power generation boilers operating on wood fuel. Resistance to alkali of medium-cement concrete developed by the authors with a filler prepared from sinter grade Gorkal-50 (produced by the Gorka Plant, Poland) is also studied.

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  • Refractory Material - an overview | ScienceDirect Topics

    Refractory materials, like all solids, expand on heating, the degree of expansion being related to the chemical composition of the refractory.Magnesium oxide has the highest coefficient of expansion of the refractory materials commonly used. Silicon carbide has a comparatively low coefficient of expansion and fused or vitreous silica has the lowest expansion of all the refractory materials ...

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  • Refractory, Definition, Types, Materials and

    2021-2-27 · 1. Introduction. One of the most important feature of refractories used as lining materials in a blast furnace is their degradation resistance, which strongly affects the lifetime of the whole furnace [1,2].The micropore carbon materials are used mainly in the hearth of a blast furnace, thus they are subjected mainly to the chemical degradation, i.e. alkali [] and zinc attack [], carbon ...

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  • 13 Types of Refractory Materials and Their Applications

    169 行 · 2010-4-16 · Table 27.8 indicates the amount of data needed when installing a refractory. …

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  • Permeability of carbon refractory materials used in a ...

    2019-1-1 · Because of concerns with chromium toxicity, spent-chrome containing refractories were the first to attract recycling attention, with research dating back to the early 1980s (Fang et al., 1999) and a first patent on reprocessing of spent magnesium-chrome bricks into refractory raw materials published in 1985 (Nazirizadeh et al., 1985).Increasing environmental awareness, increasing costs for ...

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  • Duplicating and refractory materials used in

    2017-9-1 · Ceramic refractory materials have been used as barriers between hot and relatively cold zones for thousands of years and are still of great importance for mankind. This is especially noticed in the production of cement and iron − two of the most produced materials on Earth [1] , [2] .

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  • Refractory raw materials, method for production

    The test was conducted using the same amounts of the same raw materials as in Example 2-2 and changing the mixing method only. First, 0.2 part by weight of carbon black “Niteron #10 Kai” (carbonaceous grains a) and 3 parts by weight of the same phenol resin as used in Example 2-1 were charged into a universal mixing stirrer manufactured by ...

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  • Exploration on Reuse of Waste Refractory Materials

    2020-5-27 · Application status of waste refractory materials in the steel industry. Refractory material are widely used in the iron and steel industry. Metallurgical industry or building material production enterprises need to purchase a large number of refractory materials required for high-temperature operations to ensure continuous production.

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  • Study of Alkali Resistance of Refractory Materials

    Using the ASTM C 454–83 method alkali resistance is studied for various refractories (chamotte brick, traditional and medium-cement chamotte concrete) used most often in power generation boilers operating on wood fuel. Resistance to alkali of medium-cement concrete developed by the authors with a filler prepared from sinter grade Gorkal-50 (produced by the Gorka Plant, Poland) is also studied.

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  • Disposal of waste refractory materials - Technical

    Disposal of waste refractory materials Dec 09, 2020. 1. Remove soil, dust and adulterants from waste refractory materials. For the sorted waste materials, if there are dust, mud and other debris on the surface, they must be removed manually. Workers pick out the adulterants and wash them with water to remove the dirt and dust on the surface.

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  • Refractory Testing - NETZSCH Thermal Academy

    Several methods have been developed for the determination of thermal conductivity of refractory and heat insulating materials at elevated temperatures. The only internationally standardized method is the hot-wire method (ISO 8894). The hot-wire method is a dynamic, absolute method based on the measurement of the temperature increase

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  • Wear Mechanisms of Carbon-Based Refractory Materials

    2015-2-9 · However, practical refractory materials are by no means pure materials and contain secondary phases and porosity which can be expected to affect reaction with slag. In Part II, such reactions are examined experimentally, in cup and wettability tests, using com-mercially available carbon block and cold-ramming paste refractory materials and mainly

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  • Determination accuracy of analysis refractory

    This work was focused on the finding of the right way how to analyze refractory materials by X-ray fluorescence. This method can provide accurate results which can be easily repeated, what is the reason why this method is commonly used in industry. Using of the fluorescent spectrometric analysis comes with one issue, which is the presence of many distorting interferences.

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  • Calculation of Temperature and Thermal Stress in ...

    element method for magnesia and magnesia-chromite content of chromite between 6% and 15%. The thermal and mechanical properties of the materials were measured using standard laboratory procedure.

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  • Characterization of porous media and refractory

    In addition, this study also includes another part of the permeability system, the un-bonded granular materials used in the Lost Foam Casting process. A three-dimensional (3-D) computer program is developed to simulate the packing behavior of granular materials at a loose state using a 'drop and roll' method.

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  • Drying Refractory in Steam-Generating Boilers -

    Drying refractory is critical for strong, long-lasting refractory applications. Unfortunately, standard refractory dry-out schedules, provided by all refractory manufacturers with their products, are difficult to apply to refractory used on a steam-generating boiler. These standard dry-out schedules are generic and require temperature monitoring rarely found at power plants, where monitoring ...

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  • 11.5 Refractory Manufacturing

    Refractory materials are ceramic materials that are designed for service temperatures of around 1,500°C and are mainly used in furnace linings for the iron, steel, glass, aluminium and cement industries. More than 10 million tons of refractory materials are produced annually worldwide. These materials are subjected to severe thermomechanical loading due to rapid changes in temperature.

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  • A new method to determine the Young's modulus of ...

    Aside from the types of anchors used, the placement and number of anchorage points are extremely important. This is determined based on the conditions the equipment will operate and the materials being used. Summary. If you need any questions answered about refractory products and materials, feel free to reach out to Schad using our contact ...

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  • PREDICTING THE COMPRESSIVE STRENGTH OF PBA –

    Unshaped Refractory Materials. Clay castable, using refractory clay clinker as aggregate, adding alumina powder and soft clay binder. According to the formula ratio, it is prepared by mixing with a mixer for more than 5 minutes. The operating temperature is generally 1300-1450 ℃.

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  • RH systems using refractory materials ~ LONTTO

    2021-4-21 · RH refining method is the German steel company Ruhrstahl and Heraens joint in 1958 the successful development of the vacuum cycle degassing method. RH refining technology because of its good degassing effect, less cooling, wide application and so on, so far the world has been widely used in iron and steel industry.

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  • Commonly Used Refractory Materials Introduction -

    Unshaped Refractory Materials. Clay castable, using refractory clay clinker as aggregate, adding alumina powder and soft clay binder. According to the formula ratio, it is prepared by mixing with a mixer for more than 5 minutes. The operating temperature is generally 1300-1450 ℃.

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  • Construction Methods Of Refractory Materials In

    2017-6-23 · The wet laying method is used in the sidewall and crown of the flame space, the fuels, chimneys and the insulation layers. The mortar of the wet laying method should be formulated in accordance with the appropriate refractory bricks. ... Refractory Materials Used In the Regenerator of the Hot Blast Stove Sunrise Refractory Attends The China ...

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  • Process for guniting refractory mixes using

    Refractory materials are designed to retain their strength at high temperatures and are thus used, for among other things, as liners in furnaces, incinerators and ovens. The refractory materials may be applied in a number of known ways including by casting, pumping, shotcreting or dry gunning.

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  • Chrome Compounds: Refractory Cements, Refractory

    2021-5-21 · Refractory materials dealt with here include refractory cements and bricks. Additionally, refractories based on chrome compounds find use in continuous casting applications (tundishes and linings, for example) and as critical components in green sand casting - the high temperature molten metal casting technique used where utmost precision is ...

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  • Direct analysis of clay and refractory materials slurries ...

    The feasibility of clays and refractory materials analysis by direct introduction of slurries in an inductively coupled plasma optical emission spectrometry (ICP-OES) with axial viewing using the simplified generalized standard additions method (GSAM) was evaluated.The adopted approach is a multivariate extension of the conventional standard additions method, and uses two independent variables ...

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  • Analysis and Prediction of Corrosion of Refractory ...

    2020-10-23 · A thermodynamics method was used to study the thermodynamic properties of three common sodium salts (NaCl, Na2CO3 and Na2SO4) on the corrosion of refractory materials (MgO·Cr2O3, MgO·Al2O3, Al2O3, MgO and Cr2O3). The results determined that MgO has the best corrosion resistance and is not corroded by the three sodium salts.

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  • Monolithic Refractories-Cheap Refractory Materials

    Monolithic refractories, a kind of unshaped refractory, are made of refractory aggregate and powder with a certain grain size distribution, binding agent, and admixture.The monolithic refractory materials can be directly used for the lining of thermal equipment by baking without the firing process. Monolithic refractory own features of simple process, energy-saving, low cost, and easy ...

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  • OPTIMIZATION OF REFRACTORY LINING USED IN BLAST

    2015-12-16 · The refractory lining with stave 3D model in blast furnace is analyzed and design by using the ANSYS software. This model is used for analysis the effect of refractory lining thickness with different cooling rate. The cooling of refractory is the essential feature for the blast furnace campaign life.

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  • VWHP XVLQJWKH6+6PHWKRG

    the advantages of this method. An unconventional method of the synthesis of ceramic materials is used to synthesize MgAl2O4 finely dispersed magnesium aluminate spinel in the combustion wave. As a result, it can be used further as a precursor for the production of refractory ceramic products.

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  • Construction Methods Of Refractory Materials In

    2017-6-23 · The wet laying method is used in the sidewall and crown of the flame space, the fuels, chimneys and the insulation layers. The mortar of the wet laying method should be formulated in accordance with the appropriate refractory bricks. ... Refractory Materials Used In the Regenerator of the Hot Blast Stove Sunrise Refractory Attends The China ...

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  • Refractory Materials - Definition, Classification,

    2019-12-30 · Refractory materials – definition. Refractory refers to the mechanical strength of the material at high temperatures. Refractory materials are characterized by a high melting point, and when exposed to high temperatures they do not lose their strength and of form. ASTM (the American Society for Testing and Materials) defines refractories as ...

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  • Usage of Castable Refractory Materials

    2018-10-31 · Castable refractory materials are very coarse compared to other refractory materials and products. When the elements are in their unfired “green” state, that is when they are formed or gelled by using a method known as the binder system. Once they reach the optimum temperature, the binder will make a ceramic bond by transforming the ...

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  • Refractory Materials Used In Non Coke Iron Smelting

    Refractory Materials Used In Non Coke Iron Smelting Blast furnace iron smelting possesses the dominant position for a long term, but with the strained supply of coke and severe environmental pollution, new iron smelting technique is researched and now there are two matured non coke iron smelting methods: sponge iron producing method and COREX ...

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  • Refractory materials - Goricon Metallurgical Services

    We claim: 1. A method of treating a ferrous metal structure formed with a cavity by fitting the cavity with refractory brickwork which substantially fills the cavity to the level of said surface, but has a periphery which defines a gap between the brickwork and the ferrous metal of the structure, in which method the periphery of the brickwork is joined to the ferrous metal structure by an ...

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  • Combustion joining of refractory materials:

    2009-8-31 · for bonding refractory materials. Advances in materials joining using combustion phenomena have been dis-cussed in detail in a recent review.4 Selecting an appropriate joining method is dictated not only by the material, but also by the geometry of and intended use for …

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  • Refractory Lining Materials Testing - Metso Outotec

    2016-2-24 · The finger test is best suited for refractory brick materials and is the one most used, because it is dynamic and most accurately resembles the real operating conditions. The crucible test is best for refractory masses and for cases where the reactions with …

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  • (PDF) Mechanical and Thermal Shock Behavior of

    AM refractory has Mullite as a main principal phase. In Am the principal phase is Alumina accompanied by Mullite. The low background in all the Table 1.Open porosity of the materials using the Archimedes method is 18-20%. Pore size distributions (Hg intrusion) are shown in Fig. 2. Accumulative pore size curves are very similar for all three ...

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  • OPTIMIZATION OF REFRACTORY LINING USED IN BLAST

    2015-12-16 · The refractory lining with stave 3D model in blast furnace is analyzed and design by using the ANSYS software. This model is used for analysis the effect of refractory lining thickness with different cooling rate. The cooling of refractory is the essential feature for the blast furnace campaign life.

    Get Price
  • Characterization of Ibamajo, Mowe and Nkwo-Alaike ...

    Therefore, there is need to develop the local refractory materials for their application in the required industries. Thus, this work studies the physical, chemical and thermal properties of Ibamajo, Mowe and Nkwo-Alaike clays to determine their suitability for refractory bricks production. 2.0 Experimental Method 2.1 Materials and Equipment

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