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Beneficiation of Algerian phosphate tailings by electrostatic methods / Ould Hamou, Malek 

Public ISBD Titre : Beneficiation of Algerian phosphate tailings by electrostatic methods Type de document : texte imprimé Auteurs : Ould Hamou, Malek, Auteur ; P. A. Young, Directeur de thèse Editeur : University of Leeds Année de publication : 1990 Importance : 182 f. Présentation : ill. Format : 30 cm. Note générale : Thèse de Doctorat : Génie Minier : Royaume-Uni, University of Leeds : 1990 Bibliogr. f. 183 - 189 . Annexe f. 190 - 193 Langues : Anglais (eng) Mots-clés : Phosphate  tailings Electrodynamic  separator Pneumatic  separation Djebel-onk  tailings Algeria Mineralogical  analysis Index. décimale : D001390 Résumé : With the increased demand for phosphates in fertilizer and other industries and the decreased availability of high grade ores in many parts of the world, beneficiation of low phosphate ores and tailings may be needed. A phosphate tailings sample from Algeria was investigated with the emphasis on beneficiation by dry methods. In the present study, an electrodynamic separator has been used and its working parameters considered. Particular attention has been paid to comminution and to phosphate grade and recovery as a function of size analysis. Initial studies have shown that separation in terms of mineralogical constituents is poor. Adapting the electrodynamic separator to sizing is possible and separation by "electrodynamic size analysis" is compared with pneumatic separation - in terms, that is, of the upgrading - of Djebel-Onk tailings. Mineralogical analysis indicated that undesirable impurities are scattered in the phosphate matrix, therefore, giving a narrow option to any physical process. Relatively good results have been achieved in electrodynamic sizing at low voltages. Two stages of separation with an intermediate recrushing upgraded the feed material from 22.7 to 26.75 % P₂O₅ at 47.1 % recovery, and there is a possibility that this concentrate could be blended into higher grade products. Beneficiation of Algerian phosphate tailings by electrostatic methods [texte imprimé] / Ould Hamou, Malek, Auteur ; P. A. Young, Directeur de thèse . - [S.l.] : University of Leeds, 1990 . - 182 f. : ill. ; 30 cm. Thèse de Doctorat : Génie Minier : Royaume-Uni, University of Leeds : 1990 Bibliogr. f. 183 - 189 . Annexe f. 190 - 193 Langues : Anglais (eng) Mots-clés : Phosphate  tailings Electrodynamic  separator Pneumatic  separation Djebel-onk  tailings Algeria Mineralogical  analysis Index. décimale : D001390 Résumé : With the increased demand for phosphates in fertilizer and other industries and the decreased availability of high grade ores in many parts of the world, beneficiation of low phosphate ores and tailings may be needed. A phosphate tailings sample from Algeria was investigated with the emphasis on beneficiation by dry methods. In the present study, an electrodynamic separator has been used and its working parameters considered. Particular attention has been paid to comminution and to phosphate grade and recovery as a function of size analysis. Initial studies have shown that separation in terms of mineralogical constituents is poor. Adapting the electrodynamic separator to sizing is possible and separation by "electrodynamic size analysis" is compared with pneumatic separation - in terms, that is, of the upgrading - of Djebel-Onk tailings. Mineralogical analysis indicated that undesirable impurities are scattered in the phosphate matrix, therefore, giving a narrow option to any physical process. Relatively good results have been achieved in electrodynamic sizing at low voltages. Two stages of separation with an intermediate recrushing upgraded the feed material from 22.7 to 26.75 % P₂O₅ at 47.1 % recovery, and there is a possibility that this concentrate could be blended into higher grade products.

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Code-barres	Cote	Support	Localisation	Section	Disponibilité	Spécialité	Etat_Exemplaire
D001390	D001390	Papier	Bibliothèque centrale	Thèse de Doctorat	Disponible

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