Results 101 to 110 of about 760 (278)

Seleção de concretos refratários densos antierosivos para unidades de craqueamento catalítico fluidizado de petróleo Selection of dense antierosive refractory castables for fluid catalytic cracking units

Cerâmica, 2012
Na indústria petroquímica a unidade de craqueamento catalítico fluidizado de petróleo é um importante equipamento para aplicação de concretos refratários devido à necessidade de se obter produtos especializados.
F. A. S. Serra, E. Prestes, J. Medeiros, J. L. B. C. Veiga, V. C. Pandolfelli   +4 more
doaj   +1 more source

Effective Equilibrium Reaction Zone Modeling of Hydrogen Plasma Smelting Reduction: A Scenario Analysis

steel research international, EarlyView.
The study presents a dynamic zonal model for hydrogen plasma smelting reduction (HPSR) in direct current arc furnaces, predicting time‐dependent behavior of metal, slag, and off‐gas. The study considers various industrial scenarios to quantify energy demand, hydrogen utilization, degree of reduction, and other operational sensitivities.
Tristan K. Wickham, Stephanus P. Du Preez, Dmitri G. Bessarabov, Stephan C. Louw, Ernst L. J. Kleynhans   +4 more
wiley   +1 more source

New approach of recycling vanadium‐bearing slags as a binder in high‐alumina refractory castables application

International Journal of Ceramic Engineering & Science
Handling the massive quantities of by‐products from metallurgical processes has become a major concern in recent decades. Efforts to develop sustainable alternatives for these secondary resources are ongoing to achieve the transition to climate ...
Mathilda Derensy, Thomas Zanin, Jan‐Felix Bleck, Thorsten Tonnesen, Jesus Gonzalez‐Julian   +4 more
doaj   +1 more source

Cimento aluminoso e seus efeitos em concretos refratários magnesianos espinelizados in situ Calcium aluminate cement and its effects on in-situ spinel containing magnesia refractory castables

Cerâmica, 2010
O uso de concretos refratários alumina-magnésia ligados por cimento aluminoso (CAC) apresenta vantagens decorrentes da presença de espinélio e de CA6 (CaO.6Al2O3), ambas formadas in-situ e acompanhadas de expansão.
D. H Milanez, E. Y Sako, M. F Maia, M. A. L Braulio, L. R. M Bittencourt, V. C Pandolfelli   +5 more
doaj   +1 more source

High-alumina spinel refractory castables [PDF]

, 2008
The increasing steelmaking production level in association with the steel quality requirements led to the use of high performance materials. In this context, the use of refractory castables increased, due to their production and application versatilities.
Braulio, Mariana de Albuquerque Lima
core  

Influence of Oxygen Contamination on the Genesis of Nonmetallic Inclusions in a Microalloyed Steel

steel research international, EarlyView.
Oxygen contamination during melting of steels strongly affects the evolution of nonmetallic inclusions. Controlled remelting experiments, combined with SEM/EDS analysis and thermodynamic simulations, reveal how reoxidation promotes the transformation of alumina‐based inclusions into complex FeO–MnO oxides and other interactions.
Leandro Pianca Prandi, Felipe Fardin Grillo, Estéfano Aparecido Vieira   +2 more
wiley   +1 more source

ADVANCEMENTS IN REFRACTORY CASTABLES: ENHANCEMENT OF GREEN-STATE AND HIGH-TEMPERATURE PERFORMANCES OF COLLOIDAL SPINEL BONDED CASTABLES [PDF]

International audienceHistorically, improving refractory castables' hightemperature performance involved reducing calcium aluminate cement (CAC) content.
Petit, Aurélien, Brochen, Erwan, Dannert, Christian, Mastroianni, Isabella, Krause, Olaf, Abdelouhab, Sandra, Delmotte, Cathy   +6 more
core  

Low cement high alumina castables: Effect of distribution coefficients [PDF]

, 2013
Refractory materials used in various areas of the iron and steel industry need to face severe challenges to meet critical operational parameters at high temperatures.
Parija, Anwesha
core  

Neutron tomography analysis of permeability‐enhancing additives in refractory castables [PDF]

International audienceAbstract Polymeric fibers are often used as a drying additive for refractory castables because they can increase their permeability, reducing the risk of pressurization that is believed to trigger explosive spalling.
Pont, S. Dal, Tengattini, A., Pandolfelli, V., Moreira, M.   +3 more
core   +1 more source

Barriers to Steel Decarbonization

steel research international, EarlyView.
Main identified barriers to steel decarbonization Carbon dioxide (CO2) emissions are a leading contributor to global climate change, necessitating urgent mitigation strategies. While various metrics—such as total national emissions, per‐capita output, and historical contributions—define responsibility, determining accountability remains complex ...
Pasquale Cavaliere
wiley   +1 more source