Abstract

In this study, the fly ash taken from the Tuncbilek lignite fired power plant is characterized and separated from its byproducts. Fly ash is composed of unburned carbon, iron compounds typically of magnetite, pozzolanic material and cenospheres. A systematic study is conducted to establish the optimum conditions for the separation of these materials from fly ash. In this context, concentration techniques such as magnetic and gravity separations are put forward. All experiments show that the density differences between the byproducts of fly ash are one of the most important factors in the separation of fly ash. A flowsheet is developed on the basis of differences in gravities and magnetic susceptibilities of the byproducts.Dans cette étude, on caractérise l’escarbille provenant de la centrale électrique au charbon de Tuncbilek et on la sépare de ses sous-produits. L’escarbille est composée de charbon non brûlé, de composés de fer, typiquement de la magnétite, de matériau pouzzolanique et de cénoshpères. On fait une étude systématique des conditions optimales de séparation de ces matériaux de l’escarbille. Dans ce contexte, on met de l’avant des techniques de concentration telles que la séparation magnétique ou par gravité. Toutes les expériences montrent que la différence de densité entre les sous-produits de l’escarbille est l’un des facteurs les plus importants pour la séparation de l’escarbille. On a développé un schéma de procédé en se basant sur les différences de gravité et de susceptibilité magnétique des sousproduits.

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