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·crete mater i als that can rep l ace aggr eg ates both fi ne a n d co arse li k e v e rmic ul it e perl it e diatomite ex panded clay chamo e p u mice gr anit e synthetic alumino u s
·Similarly Li et al found that Cr 3 C 2 /C composite powders could improve the slag resistance due to the formation of compound spinel [28] Specifically the slag corrosion resistance of MgO C refractories containing CMA aggregate and/or silicon carbide was carried out by induction furnace slag tests The suitable addition of CMA was
·For dense magnesia spinel refractory DMA the microcracks are formed around the introduced dense magnesium aluminate spinel aggregates due to the thermal expansion mismatch between the spinel MA and magnesia M [24] Its typical microstructure is shown in Fig 1 a Comparatively the lightweight magnesia spinel refractory LMA uses the
·In order to achieve better properties of scrap containing MgO C refractories compared to these developed so far [29] [30] [31] the production process shall be improved as it results in decreased mechanical properties of new refractory due to the high porosity of recycled aggregate and incorporates energy consumable additional process of
·Objective was to develop a lightweight high alumina refractory aggregate for use in various high performance insulating low thermal conductivity refractory applications in the aluminium glass cement and iron and steel industries A new aggregate process was developed through bench and pilot scale experiments involving extrusion of a blend of
Overview of Recycled refractory brick aggregate C1400 and C1 450 was manufactured with coarse and fine natural aggregate and they are determined based on the Dreux mix design method [21] For the second family three mixtures C2 350 C2 400 and C2 450 were produced by replacing 20% by volume of the coarse NA by coarse RBA
·The refractory quality of high alumina is usually higher than that of fireclay bearing refractories better creep resistance and corrosion resistance Alumina refractories contain a minimum of 60 wt% Al 2 O 3 although the Al 2 O 3 content can be >99% for specialty products This type of refractories can be produced from fire clays used in
·In this article the physical with lightweight sand are studied The mortars were prepared by replacing 10% 20% 30% 40% 50% 70% and 100% of clay lightweight sand with natural sand as fine
·In the present study a processing technique for recycling investment casting ceramic shell waste was proposed to separate valuable refractory aggregate zircon sand The microstructure and phase constituents of the shell waste and separation process were investigated The results show that the characteristics of microstructure and phase
·Request PDF Optimizing compressive behavior of concrete containing fine recycled refractory brick aggregate together with calcium aluminate cement and polyvinyl alcohol fibers exposed to
·Performance of recycled refractory brick fine aggregate on diverse properties of Portland slag cement based heat resistant concrete Author links open D Bao L Li Compressive properties of rubber modified recycled aggregate concrete subjected to elevated temperatures Construct Build Mater 268 2021 Article 121181 /j
·The compressive strength tensile strength and tensile displacement of refractories with 50 vol% coated lightweight aggregate increased by % % and % respectively compared to
·The effects of lightweight MSRG composite aggregate on the properties of refractory castables were studied by XRD SEM and EDS etc Comparing with a common lightweight chamotte aggregate it was
·A list of common refractory materials and their applications with the carbon containing refractory materials are presented in [Thethwayo & Steenkamp 2020] The carbon bonded refractories for
·We discuss the influence mechanism of SiC on the refractory aggregate The results showed that the main phase compositions were corundum and MgAl2O4 spinel with accompanying small amounts of mullite phase Li S Li N Effects of composition and temperature on porosity and pore size distribution of porous ceramics prepared from Al OH 3
·Recycled aggregates derived from construction and demolition C&D waste are becoming popular alternatives for aggregates used to make sustainable construction materials However not all recycled aggregates from C&D waste can be used for structural concrete applications owing to their characteristics This study proposes the use of refractory brick
·The amount of construction and demolition waste continues to increase year by wastes have a significant harmful influence on the environment; refractory brick is among of these wastes this paper concerns the reuse of refractory brick wastes to produce an eco friendly concrete To achieve this objective coarse and fine Natural Aggregates NA were
·refractory aggregate from investment casting ceramic shell waste Ji gao Li Male born in May 1973; candidate Research area molding materials and new technology on materials forming
·pressive strength Specically when the refractory coarse aggregate constitutes 15% of the mixture there is a slight reduction in compressive strength compared with the con trol concrete However as the proportion of refractory coarse aggregate increases to 30% and 50% this reduction in compressive strength becomes less signicant suggesting a
·The influence of calcium magnesium aluminate CMA aggregate and silicon carbide on the slag corrosion resistance of MgO C refractories was investigated by the induction furnace tests The corrosion behavior and the formation of protective slag layer were also comprehensively discussed in present work The results showed that CaAl 2 O 4 in CMA
·In this study lightweight refractory was fabricated via carbothermal reduction of process proceeded by oxygen diffusion rate controlled oxidation of Mg vapor and subsequent reaction between deposited MgO and Al 2 O aggregate had an obvious effect on the characteristics of the aggregate/spinel matrix bonding interface and mechanical
·Olivine has been using in the metallurgy ceramic and refractory industries but its main utilization takes place as a slag conditioner in steel production Acar 2020; Furlani et al 2015;Qafoku
·DOI / Corpus ID 139800092; Comparison of interactions of MgO based refractories with Li ion battery cathode materials during calcination article{Zhai2018ComparisonOI title={Comparison of interactions of MgO based refractories with Li ion battery cathode materials during calcination} author={Pengtao Zhai and Liugang
