Limestone Particles
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Limestone particle size and artificial light for laying hens in the second laying cycle
The experiment was conducted to evaluate the effects of limestone particle size and the use of artificial light for laying hens in the second laying cycle. We used 240 Hisex White laying hens at 82 weeks of age in a completely randomized design in a 5 × 2 factorial arrangement, resulting in 10 treatments with 4 replicates of 6 birds. The variables were the
R. Bras. Zootec.. Publicado em: 2013-07
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2. Classes granulométricas e modo de aplicação de calcário na cultura do milho / Size classes and ways of applying lime to corn crop
Lime particle size is key to soil correction as it defines the reactivity of the soil due to its low solubility. The lime presenting a particle size larger than 0,3 mm corrects soil acidity and enables soil residual effect whereas the finely ground lime presents a lower residual effect, however; it promotes soil acidity correction and can percolate in the la
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/06/2011
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3. Eficiencia relativa de fracoes granulometricas de calcario na correcao da acidez do solo.
Foram conduzidos dois experimentos em Latossolo Bruno Humico (LB) e Podzolico Vermelho-Escuro distrofico (PE), com o objetivo de avaliar a eficiencia relativa (ER) de seis fracoes granulometricas de um calcario comercial. Os trabalhos foram executados no campo, em microparcelas composta de recipientes de polietileno de 14 litros de capacidade, enterrados ao
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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4. Studies of air pollution in the municipal district of Sete Lagoas, MG using nuclear techniques / Estudos da poluição do ar do município de Sete Lagoas, MG utilizando técnicas nucleares
Toxic metals, such as Ni, V, Zn, Cu, Cr, Mn and metalloids as As and Se and their compositions are associated mainly with the smaller diameter particulates present in the atmospheric aerosols. This fact is important, principally, when it concerns public health, because this is considered the breathable fraction of particles that can penetrate deeply into the
Publicado em: 2006
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5. O efeito da granulometria na decrepitação durante a decomposição térmica de calcários e carvão
The use of fluidized bed combustors to burn coal is largely studied to permit the addition of limestone to capture SO2. The particle size for coal and limestone is an important parameter in this process. Thermogravimetry (TG) is used to elucidate the combustion and sulfation processes, but the experimental parameters must be evaluated to be representative in
Química Nova. Publicado em: 2004-02
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6. Determinação da força de adesão entre partículas e uma superfície aplicando a técnica centrífuga.
The present work is dedicated to the investigation of the influence of particles size of the powdery material on the adhesion force of particle-substrate, using the centrifugal technique for different compression speeds and detachment. A centrifuge (MA - 860, Marconi Equipamentos), with maximum speed of rotation 14000 rpm, was used in the adhesion experiment
Publicado em: 2004
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7. Removal of SO2 with particles of dolomite limestone powder in a binary fluidized bed reactor with bubbling fluidization
In this work, SO2 was treated by reaction with dolomite limestone (24 µm) in a fluidized bed reactor composed of 500-590 µm sand particles. The influence of operating temperature (500, 600, 700 and 800ºC), superficial gas velocity (0.8, 1.0 and 1.2 m/s) and Ca/S molar ratio (1, 2 and 3) on SO2 removal efficiency for an inlet concentration of 1000 ppm was
Brazilian Journal of Chemical Engineering. Publicado em: 2003-06