Glass Silicates
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Characterization of basic oxygen furnace slag and granite waste mixtures to Portland cement production
Abstract The aim of this paper is to analyze mixtures of basic oxygen furnace slag and granite waste in order to produce Portland cement. X-ray patterns were carried out in both the basic oxygen furnace slag and granite waste. Then, mixtures were prepared to obtain the binary basicity of 0.5, 0.9 and 1.2. The mixtures were melted at 1500ºC. Two cooling step
REM, Int. Eng. J.. Publicado em: 2016-12
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2. Effect of inorganic and organic depressants on the cationic flotation and surface charge of rhodonite-rhodochrosite
Abstract Silicates (rhodonite, tephroite, spessartine) and the carbonate (rhodochrosite) of manganese are of economic interest in silicate-carbonated manganese ores. The recovery of both mineral classes by flotation constitutes a challenge; rhodochrosite is a slightly soluble mineral that can release Mn2+ ions in pulp. In this work, the effects of inorganic
Rem: Rev. Esc. Minas. Publicado em: 2015-12
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3. Geração de resíduos sólidos de galvanoplastia em regiões densamente povoadas - avaliação, inertização e destinação / Production of solid galvanic waste in densely populated areas evaluation, inertization and disposal
Os resíduos sólidos galvânicos despertam especial atenção, devido à sua composição tóxica. Tais resíduos geralmente são estocados nas empresas de galvanoplastia, criando um preocupante passivo ambiental, em particular, nas áreas densamente povoadas, como a zona leste da cidade de São Paulo, que, por sua vez, possui um pólo de empresas de galvan
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/03/2011
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4. Editorial
Numerous silicates based wastes have been produced and considered for recycling and reuse. Among them, glass cullet is one of the most common silicate wastes and has considerable volume in the cities wastes. A big amount of this waste is recycled by the glass industry but another part is dumped in the cities garbage deposits. In the last few decades there ha
Matéria (Rio de Janeiro). Publicado em: 2009
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5. Control of root knott nematodes (Meloidogyne spp) and cyst (Heterodera glycines) with silicates / Controle dos nematÃides de galhas (Meloidogyne spp.) e do cisto (Heterodera glycines) com silicatos
Seeds of lettuce, tomato, cucumber and soybean were placed to germinate in substrate containing different doses of potassium silicate (K) or calcium silicate (Ca) to be used in all assays. In field tests, seedling of lettuce and tomato received more K or not by fertirrigation as well as lettuce in greenhouse. In assays with lettuce, cucumber and soybean the
Publicado em: 2007
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6. Flotação de espodumênio, microclina, quartzo e muscovita com coletores aniônicos, catiônicos, anfotéricos e mistura de coletores
The worldwide lithium consumption is chiefly associated with the industries such as primary aluminum, glass, ceramics and lubricants being distinguished however the increasing and strategical use of lithium in components of batteries, nuclear reactors, parts for the aeronautical industry and the manufacturing of pharmaceuticals. Production of lithium carbona
Publicado em: 2006
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7. Pulsed laser deposition of SiO2 - P2O5 - CaO - MgO glass coatings on titanium substrates
Thin films of bioactive glass-ceramic have been deposited on titanium substrates by the Pulsed Laser Deposition (PLD) technique under different experimental conditions. The effect of parameters such as deposition pressure and temperature of heat treatments was studied. The microstructure and the crystalline phases of the coatings were characterized using SEM
Materials Research. Publicado em: 2004-09
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8. Espectroscopia e transferÃncia de energia em eidros La2O3-Nb2O5-B2O3
Glasses are amorphous materials with structures that can, in general, be described by a random non-periodic network model. Although for many glasses, mainly silicates, this model is appropriate, there are systems that present short and medium-range order (first and second coordination spheres) for which more sophisticated models are needed to describe their
Publicado em: 2003
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9. Electrical conductivity of borate, silicate and silica-sulphate glasses of alkaline ions. / Condutividade elétrica de vidros de boratos, silicatos e sílico-sulfatos de íons alcalinos.
Conducting glasses based on borates, silicates and silica-sulfates of alkali metals have been prepared from an appropriate mixture of powder of oxides, carbonates and sulfates. They were produced by fusion in a silicon carbide furnace up to 1400ºC and then by fast cooling. These materials have been analyzed with techniques of DC conductivity and Impedan
Publicado em: 2000