Effect of spinel content on slag attack resistance of high
High alumina refractory castables based on the Al 2 O 3-MgO-CaO diagram ternary system were prepared using tabular alumina white electrofused corundum calcined alumina synthetic spinel dead-burned magnesia dolomite and calcium aluminate cement as starting raw materials.Two kinds of slags with 9.02 and 4.14 CaO/SiO 2 ratios were studied for slag resistance by means of crucible tests.
Chat OnlineEvolution of in Situ Refractories in the 20th Century
The full text of this article hosted at iucr is unavailable due to technical difficulties. The history of refractories during the 20th century is used in this review to illustrate how techniques‐such as slag splashing in situ spinel generation Effect of Magnesia Addition on Physical Properties and Slag Attack Resistance of
Chat OnlineA Review on Recent Advances on Magnesia-Doloma
Addition of CuO up to 2 wt. improved the hydration resistance but it was not significantly high in comparison to that of 1 wt. CuO. The use of a higher level of CuO in lime did not show any further improvement in hydration resistance. The CaO forms a low melting compound (2CaO.CuO) with CuO which helps liquid phase sintering of lime.
Chat OnlineCorrosion of refractories in lead smelting reactorsUBC
Corrosion of refractories by slag is a complex phenomenon which depending on the particular system involves many processes such as chemical wear (corrosion) and physical or mechanical wear (erosion) which may act synergistically. No single model can explain all cases of corrosion nor can it explain all corrosion mechanisms of a particular refractory in different environments but the
Chat OnlineMaterials Free Full-Text Improving Corrosion
The corrosion of refractories in contact with high temperature aluminum-magnesium alloys leads to contamination of the Al-Mg alloy products by solid impurities from degraded refractories. Where both the spinel and corundum phases form in the refractories cracks are generated and propagated by diffusion of molten Al-Mg resulting in severe corrosion.
Chat OnlineFull text of "Engineering Science Vol-14"Internet Archive
Search Metadata Search text contents Search TV news captions Search archived websites Advanced Search. Sign up for free Log in Full text of "Engineering Science Vol-14" See other formats
Chat OnlineISIJ InternationalJST
In the case of high P 2 O 5 content a leachate with higher P concentration and lower Ca and Si concentrations was obtained exhibiting excellent selective leaching of P. Increasing the Fe 2 O 3 content in slag not only promoted the dissolution of P but also decreased the dissolution ratios of other elements. With the increase in slag basicity
Chat OnlineEvolution of in Situ Refractories in the 20th Century
The full text of this article hosted at iucr is unavailable due to technical difficulties. The history of refractories during the 20th century is used in this review to illustrate how techniques‐such as slag splashing in situ spinel generation Effect of Magnesia Addition on Physical Properties and Slag Attack Resistance of
Chat Online(PDF) Improvement in Slag Resistance of No-Cement
Download full-text PDF Download full-text PDF This explains why LCC-SP had the lowest resistance to slag attack. Ceramics The main variables considered are the spinel content and grain
Chat OnlineEffect of Spinel Kinds on Properties of Alumina—Spinel
Nov 01 2014 · Alumina–spinel castables have also been developed with in situ spinel‐forming material where fine MgO powder taken in batch reacts with Al 2 O 3 fines to form spinel on firing and fine spinel formed " in situ " by the reaction of MgO–Al 2 O 3 in the matrix of alumina–magnesia castable increases resistance to corrosion and slag
Chat OnlineRecycling Practices of Spent MgO-C Refractories
The recycling options of spent MgO-C refractories from an electrical arc furnace (EAF) have been evaluated. The economic quality of spent refractories and products made from it the ease of implementation of a recycling practice and the interest of steel melt shops were considered. It was decided that the best option of most EAF shops would be to recycle spent MgO-C refractory as a
Chat OnlineFull text of "Transactions"
Search metadata Search text contents Search TV news captions Search archived web sites Advanced Search. upload UPLOAD person. Librivox Free Audiobook. Dj Silver Knight Martial Philosophy KevLoe s WAV. Full text of "Transactions"
Chat OnlinePromoting spinel formation and growth for preparation of
Jan 27 2020 · The study provides a method for improving the quality of the refractory material prepared from ferronickel slag by promoting the spinel formation and growth in the slag which was sintered with sintered magnesia and chromium oxide in a broad sintering temperature range from 1200°C to 1500°C.
Chat OnlineEffect of spinel content on slag attack resistance of high
Journal of the European Ceramic Society 27 (2007) 4623–4631 Effect of spinel content on slag attack resistance of high alumina refractory castables L.A. D´ıaz a R. Torrecillas a ∗
Chat OnlineCeramics International Vol 38 Issue 2 Pages
Effects of Sb content on electrical properties of lead-free piezoelectric (K 0.4425 Na 0.52 Li 0.0375) (Nb 0.9625−x Sb x Ta 0.0375)O 3 ceramics Xuming Pang Jinhao Qiu
Chat OnlineCeramics Free Full-Text Correlation of Thermo-Elastic
Corrosion is one of the most common wear mechanisms of refractories. Corrosive attacks lead to chemical and microstructural changes. Hot corrosion compromises chemical and/or physical interactions. Thus the process is complex and not yet fully understood. Currently corrosion is investigated post mortem by means of X-ray diffraction or scanning electron microscopy.
Chat OnlineEffect of spinel content on slag attack resistance of high
Journal of the European Ceramic Society 27 (2007) 4623–4631 Effect of spinel content on slag attack resistance of high alumina refractory castables L.A. D´ıaz a R. Torrecillas a ∗
Chat OnlineISIJ InternationalJST
The results indicated that the slag crust presented apparent layer structure as the solid slag layer and viscous layer which primarily consisted of gehlenite (Ca 2 Al 2 SiO 7) calcium aluminate (CaAl 4 O 7) magnesia-alumina spinel (MgAl 2 O 4) pleonaste (Mg 0.7 Fe 0.23 Al 1.97 O 4) kaliophilite (KAlSiO 4) and metallic iron.
Chat OnlineReactive processing of ceramic binding systems for
The general applied objective of this project is to develop hydratable alumina-bonded castables of properties comparable to the high-temperature fired basic bricks. This work is focused on improving the sintering of the ceramic binding systems at relatively low temperatures ( 1300°C) through incorporation of ultrafine powders. Ultrafine magnesium aluminate spinel powders were synthesized
Chat OnlineMicrostructural analysis of corroded alumina-spinel
Jan 01 1997 · Microstructures are determined before and after slag corrosion testing in an attempt to elucidate the mechanism of corrosive attack by a typical ladle slag composition. 2 Experimental The castable formulation (Table 1) was chosen to optimize resistance to slag penetration.7 Four diff- erent grades of sintered spinel were used contain- ing 67
Chat OnlineCeramics Free Full-Text Improvement in Slag Resistance
The corrosion resistance of spinel containing cement bonded castables has been extensively investigated in the past. However corrosion of no-cement refractory castables (NCC) has not been widely studied since the use of NCC has been relatively limited up till now. This paper focuses on the slag resistance of NCCs and the often-used spinel
Chat OnlineMagnesia-Based Cements A Journey of 150 Years and
This review examines the detailed chemical insights that have been generated through 150 years of work worldwide on magnesium-based inorganic cements with a focus on both scientific and patent literature. Magnesium carbonate phosphate silicate-hydrate and oxysalt (both chloride and sulfate) cements are all assessed. Many such cements are ideally suited to specialist applications in precast
Chat Online12th INTERNATIONAL CERAMICS CONGRESS PART H.
Another 25 papers consider such topics as geopolymer binders in composite cements and ceramic-like materials the role of alkaline cations in geomaterial foams new geopolymers based on electric arc furnace slag bond strengths in geopolymer and cement concretes and recycling industrial wastewater by immobilizing it in geopolymer cement.
Chat OnlineFull text of "SP 37-3 Handbook for Refractories Part 3
Full text of "SP 37-3 Handbook for Refractories Part 3 Refractories for Cement Kiln System" See other formats -k t Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities in order to promote transparency and
Chat OnlineISIJ InternationalJST
In the case of high P 2 O 5 content a leachate with higher P concentration and lower Ca and Si concentrations was obtained exhibiting excellent selective leaching of P. Increasing the Fe 2 O 3 content in slag not only promoted the dissolution of P but also decreased the dissolution ratios of other elements. With the increase in slag basicity
Chat Online1-s2.0-SX-main Refractory Ceramics
1-s2.0-SX-mainFree download as PDF File (.pdf) Text File (.txt) or read online for free. refractories
Chat OnlineA Review on Recent Advances on Magnesia-Doloma
Addition of CuO up to 2 wt. improved the hydration resistance but it was not significantly high in comparison to that of 1 wt. CuO. The use of a higher level of CuO in lime did not show any further improvement in hydration resistance. The CaO forms a low melting compound (2CaO.CuO) with CuO which helps liquid phase sintering of lime.
Chat Online
