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Implementation of convective heating in Companhia Siderúrgica Nacional Blast Furnace runners
(2013-01-21)
This paper describes the main characteristics and advantages of convective heating system for refractory lining, compared with conventional heating systems. In addition the main results obtained are presented with its ...
Protection mechanisms of blast furnace hearth linings achieved through titanium additions to the burden
(2003-12-01)
The protection mechanisms of refractory linings both at the slag and pig-iron levels associated with conventional techniques of titanium addition to the blast furnace burden were investigated. The results were derived from ...
Influence of microwave energy on structural and piezoelectric response of Bi 4Ti 3O 12 ceramics
(2010-12-01)
Bismuth titanate ceramics (Bi 4Ti 3O 12) with 10 wt% in excess of bismuth (BIT10) were prepared by the polymeric precursor method and sinterized in microwave (MW) and conventional furnaces (CF). The effect of microwave ...
Structural and electrical properties of strontium barium niobate thin films crystallized by conventional furnace and rapid-thermal annealing process
(2001-10-01)
Strontium barium niobate (SBN) thin films were crystallized by conventional electric furnace annealing and by rapid-thermal annealing (RTA) at different temperatures. The average grain size of films was 70 nm and thickness ...
Retention characteristics of lanthanum-doped bismuth titanate films annealed at different furnaces
(Elsevier B.V. Sa, 2009-05-15)
Lanthanum-doped bismuth titanate thin films (Bi(3.25)La(0.75)Ti(3)O(12) - BLT) were prepared by the polymeric precursor method and crystallized in the microwave and conventional furnaces. The obtained films are polycrystalline ...
Synthesis and characterization of CaBi4Ti4O15 thin films annealed by microwave and conventional furnaces
(Elsevier B.V., 2007-08-01)
CaBi4Ti4O15 thin films were deposited by the polymeric precursor method and crystallized in a domestic microwave oven and conventional furnace. The films obtained for microwave energy are well-adhered, homogeneous and with ...
Fracture characterization of roller compacted concrete mixtures with blast furnace slag and industrial sand
(2011-07-01)
The global energy crisis and growing environmental concerns have prompted manufacturers in general to intensify their efforts to reuse the by-products and wastes they generate. In metallurgy, steel production generates ...
Conventional and microwave sintering of CaCu(3)Ti(4)O(12)/CaTiO(3) ceramic composites: non-ohmic and dielectric properties
(Iop Publishing Ltd, 2008-08-07)
The non-ohmic and dielectric properties as well as the dependence on the microstructural features of CaCu(3)Ti(4)O(12)/CaTiO(3) ceramic composites obtained by conventional and microwave sintering were investigated. It was ...
Synthesis, structural refinement and optical behavior of CaTiO3 powders: A comparative study of processing in different furnaces
(Elsevier B.V. Sa, 2008-09-15)
Calcium titanate (CaTiO3) powders were synthesized by the polymeric precursor method and processed in different furnaces. The structural evolution of CaTiO3 powders heat treated in conventional furnace and adapted domestic ...
Influência do uso do forno de microondas ou convencional na síntese de ZrO2
(Associação Brasileira de Cerâmica, 2008-12-01)
O presente trabalho tem como objetivo descrever a síntese de óxido de zircônio, variando as condições de síntese com o uso de forno convencional (FC) ou forno de microondas (FM), através do método Pechini. As características ...