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Etude Cinetique De La Reaction Exothermique Doxydation Du Sulfure De Zinc
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Book Synopsis ETUDE CINETIQUE DE LA REACTION EXOTHERMIQUE D'OXYDATION DU SULFURE DE ZINC by : MAGDA.. GALANT FRANCOIS
Download or read book ETUDE CINETIQUE DE LA REACTION EXOTHERMIQUE D'OXYDATION DU SULFURE DE ZINC written by MAGDA.. GALANT FRANCOIS and published by . This book was released on 1995 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: LES REACTIONS GAZ-SOLIDES ONT ETE LE PLUS SOUVENT ETUDIEES EN CONDITIONS ISOTHERMES, ALORS QUE D'IMPORTANTS PROCEDES PYROMETALLURGIQUES SONT BASES SUR DES REACTIONS FORTEMENT EXOTHERMIQUES. DANS CETTE ETUDE, NOUS NOUS SOMMES PROPOSES D'ANALYSER L'INFLUENCE DU DEGAGEMENT DE CHALEUR SUR LES DIFFERENTS PROCESSUS PHYSICO-CHIMIQUES MIS EN JEU LORS DE LA REACTION D'OXYDATION DU SULFURE DE ZINC UNE REACTION FORTEMENT EXOTHERMIQUE. LES EXPERIENCES D'OXYDATION DE PARTICULES SPHERIQUES POREUSES DE ZNS ONT ETE REALISEES AUX TEMPERATURES COMPRISES ENTRE 550 ET 900C ET AUX PRESSIONS PARTIELLES D'OXYGENE DE 0,2, 0,56 ET 1 ATM. LE DISPOSITIF EXPERIMENTAL PERMET SOIT L'ANALYSE THERMOGRAVIMETRIQUE, SOIT L'ANALYSE THERMIQUE DE LA REACTION D'OXYDATION. LES RESULTATS OBTENUS SONT INTERPRETES ET SIMULES EN UTILISANT, D'UNE PART, LA LOI DES TEMPS CARACTERISTIQUES ADDITIFS, ISSUE DU MODELE ISOTHERME G.P.M. MODIFIE ET D'AUTRE PART, PAR UN MODELE NUMERIQUE QUI PREND EN COMPTE LE CARACTERE EXOTHERMIQUE DE LA REACTION. NOUS MONTRONS AINSI QUE, PAR SUITE DU DEGAGEMENT DE CHALEUR, LA REACTION D'OXYDATION SE DEROULE EN REGIME DIFFUSIONNEL MIXTE (2/3 INTERNE, 1/3 EXTERNE) DANS TOUS LES CAS ETUDIES. LA PARTICULE EN COURS DE REACTION EST LE SIEGE DE FORTS GRADIENTS THERMIQUES LOCALISES DANS LA COUCHE D'OXYDE PERIPHERIQUE FORMEE
Book Synopsis Etude des cinétiques d'oxydation du sulfure de zinc et de séchage de la blende by : Ahmed Allay
Download or read book Etude des cinétiques d'oxydation du sulfure de zinc et de séchage de la blende written by Ahmed Allay and published by . This book was released on 1986 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: Importance de la qualité des oxydes résultant du grillage des sulfures sur le rendement d'une unité de production pyrométallurgique de zinc. Oxydation chimique entre 500 et 1000 c des sulfures de Zn fondus, frittés ou en poudre, par un mélange gazeux correspondant à la composition de l'air; lois de vitesse de consommation d'oxygène ; réaction annexe de sulfatation de l'oxyde. Évolution de la composition et de la texture du sulfure de Zn soumis à l'oxydation. cinétique d'oxydation de la blende industrielle. Importance du séchage dans le grillage agglomérant des minerais sulfurés de Zn. Détermination expérimentale de la conductivité thermique et de conductance de transfert du produit à sécher. Mécanismes du séchage sous différentes conditions expérimentales. Modèle mathématique de la cinétique du séchage
Book Synopsis Contribution à l'étude de la cinétique d'oxydation du sulfure de zinc dans un mélange N2-O2 by : Ahmed Allay
Download or read book Contribution à l'étude de la cinétique d'oxydation du sulfure de zinc dans un mélange N2-O2 written by Ahmed Allay and published by . This book was released on 1982 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Contribution à l'étude thermodynamique et cinétique de la lixiviation du sulfure de zinc en milieu sulfurique by : Roger Gely
Download or read book Contribution à l'étude thermodynamique et cinétique de la lixiviation du sulfure de zinc en milieu sulfurique written by Roger Gely and published by . This book was released on 1987 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: La dissolution du sulfure de Zn synthétique en solution aqueuse sulfurique en présence ou non d'o::(2) en autoclave jusqu'a 200**(o) c. sous pression d'o::(2), h::(2)s est oxyde et il y a formation de soufre et de h::(2)so::(4). La cinétique de la réaction est étudiée en fonction de la masse de sulfure de Zn, de la concentration h::(2) So::(4), de la pression partielle d'o::(2) et de la température
Book Synopsis Gas-Solid Reactions by : Julian Szekely
Download or read book Gas-Solid Reactions written by Julian Szekely and published by Elsevier. This book was released on 2012-12-02 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas-Solid Reactions describes gas-solid reaction systems, focusing on the four phenomena—external mass transfer, pore diffusion, adsorption/desorption, and chemical reaction. This book consists of eight chapters. After the introduction provided in Chapter 1, the basic components of gas-solid reactions are reviewed in Chapter 2. Chapter 3 describes the reactions of individual nonporous solid particles, while Chapter 4 elaborates the reaction of single porous particles. Solid-solid reactions proceeding through gaseous intermediates are considered in Chapter 5. Chapter 6 deals with the experimental approaches to the study of gas-solid reaction systems. How information on single-particle behavior may be used for the design of multiparticle, large-scale assemblies, and packed- and fluidized-bed reaction systems is deliberated in Chapter 7. The last chapter covers the specific gas-solid reaction systems, including some statistical indices indicating the economic importance of the systems and processes it’s based on. This publication is recommended for practicing engineers engaged in process research, development, and design in the many fields where gas-solid reactions are important.
Book Synopsis Chemical Reactor Omnibook- soft cover by : Octave Levenspiel
Download or read book Chemical Reactor Omnibook- soft cover written by Octave Levenspiel and published by Lulu.com. This book was released on 2013 with total page 731 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Omnibook aims to present the main ideas of reactor design in a simple and direct way. it includes key formulas, brief explanations, practice exercises, problems from experience and it skims over the field touching on all sorts of reaction systems. Most important of all it tries to show the reader how to approach the problems of reactor design and what questions to ask. In effect it tries to show that a common strategy threads its way through all reactor problems, a strategy which involves three factors: identifying the flow patter, knowing the kinetics, and developing the proper performance equation. It is this common strategy which is the heart of Chemical Reaction Engineering and identifies it as a distinct field of study.
Book Synopsis Cambridge Yearbook of European Legal Studies, Vol 13, 2010-2011 by : Catherine Barnard
Download or read book Cambridge Yearbook of European Legal Studies, Vol 13, 2010-2011 written by Catherine Barnard and published by Bloomsbury Publishing. This book was released on 2011-12-15 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cambridge Yearbook of European Legal Studies provides a forum for the scrutiny of significant issues in EU Law, the law of the European Convention on Human Rights, and Comparative Law with a 'European' dimension, and particularly those issues which have come to the fore during the year preceding publication. The contributions appearing in the collection are commissioned by the Centre for European Legal Studies (CELS) Cambridge, a research centre in the Law Faculty of the University of Cambridge specialising in European legal issues. The papers presented are at the cutting edge of the fields which they address, and reflect the views of recognised experts drawn from the University world, legal practice, and the institutions of both the EU and its Member States. Inclusion of the comparative dimension brings a fresh perspective to the study of European law, and highlights the effects of globalisation of the law more generally, and the resulting cross fertilisation of norms and ideas that has occurred among previously sovereign and separate legal orders. The Cambridge Yearbook of European Legal Studies is an invaluable resource for those wishing to keep pace with legal developments in the fast moving world of European integration. INDIVIDUAL CHAPTERS Please click on the link below to purchase individual chapters from Volume 13 through Ingenta Connect: www.ingentaconnect.com SUBSCRIPTION TO SERIES To place an annual online subscription or a print standing order through Hart Publishing please click on the link below. Please note that any customers who have a standing order for the printed volumes will now be entitled to free online access. www.hartjournals.co.uk/cyels/subs Editorial Advisory Board: Albertina Albors-Llorens, John Bell, Alan Dashwood, Simon Deakin, David Feldman, Richard Fentiman, Angus Johnston, John Spencer Founding Editors: Alan Dashwood and Angela Ward Ius Commune Prize 2012 Alexandre Saydé wrote Chapter 15 in this volume entitled: 'One Law, Two Competitions: An Enquiry into the Contradictions of Free Movement Law' and we are delighted to announce that he has been awarded the Ius Commune Prize 2012.
Book Synopsis The Ladybird Illustrated by : D H Lawrence
Download or read book The Ladybird Illustrated written by D H Lawrence and published by . This book was released on 2020-11-09 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Ladybird is a long tale or novella by D. H. Lawrence. It was first drafted in 1915 as a short story entitled The Thimble. Lawrence rewrote and extended it under a new title in December 1921 and sent the final version to his English agent on 9 January 1922. It was collected with two other tales, The Captain's Doll and The Fox, and the three novellas were then published in London by Martin Secker in March 1923 under the title The Ladybird and in New York by Thomas Seltzer as The Captain's Doll in April 1923."
Book Synopsis Notes on the Minor Prophets by : Henry Allan Ironside
Download or read book Notes on the Minor Prophets written by Henry Allan Ironside and published by . This book was released on 1955 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Socialism, Perestroika, and the Dilemmas of Soviet Economic Reform by : John E Tedstrom
Download or read book Socialism, Perestroika, and the Dilemmas of Soviet Economic Reform written by John E Tedstrom and published by Routledge. This book was released on 2021-12-13 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights that Soviet economic planners and politicians must come to recognize the need to make fundamental changes, not simply incremental refinements, in the failing Soviet system. It examines the dynamics of the process of perestroika and the complexity of individual economic issues.
