EFFECT OF THE HIGH ENERGY MILLING AND GAMMA IRRADIATION ON THE RELEASE OF POTASSIUM FROM MUSCOVITE

• Autor(a) principal: Souza, Adalberto Leles de
• Data de Publicação: 2012
• Outros Autores: Lameiras, Fernando Soares
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Engenharia na Agricultura
• Texto Completo: https://periodicos.ufv.br/reveng/article/view/269
• topic: potássio; liberação; moscovita; moagem de alta intensidade

Brazil has a large and growing dependence on imports of potassium for use in agriculture. The development of potassium alternative sources has strategic importance. The grinding of rocks rich in structural potassium occurring in various regions of the country should be considered as a possibility, because the finer particles has shown accelerate the release of potassium. The objective of this paper was to investigate the effect of high energy milling and gamma irradiation on the rate of release of potassium from muscovite. It was observed that it is possible to obtain a particle size ranging from 10 to 11 ?m by grinding with a planetary mill of high energy at 800 revolutions per minute for 6 hours. The ground samples in these conditions showed a rate of potassium release two times higher than a sample pulverized by conventional grinding with a particle size of 92?m. No effect of gamma irradiation until 600 kGy dose.