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Canadian Metailurgical Quarterly Volume 30, 1991 List of Contents and Author Index ©) PERGAMON PRESS New York - Oxford - Seoul - Tokyo Canadian Metallurgical Quarterly . Dept of Mining and Metallurgical Engineering, Editor W.M. WILLIAMS McGill University, 3450 University Street, Associate Editor J. E. GRUZLESKI Montreal, Quebec, N3A 2A7, Canada Editorial Advisory Board R. ANGERS, Université Laval, Quebec, Quebec L.R. Piitt, University of Alberta, Edmonton, Alberta J.D. Boyd, Queen's University, Kingston, Ontario D. PoGGi, Noranda Research Center, Pointe Claire, G. DEMOPOULOS, McGill University, Montreal, Quebec Quebec |. V.S AMARASEKERA, University of British Columbia, G. S. Dossy, University of Toronto, Toronto, Ontario Vancouver, B.C. H. HENEIN, University of Alberta, Edmonton, Alberta W.R. TYSON, Canmet, Ottawa, Ontario G. L’ESPERANCE, Eco/e Polytechnique, Montreal, Corresponding Members Quebec W. G. DAveNnpPoRT, University of Arizona, Tucson, D. LLoyD, A/can Research Laboratory, Kingston, USA. Ontario ; A. E. Wraith, University of Newcastle-upon-Tyne, A. D. PELTON, Ecole Polytechnique, Montreal, U.K. Quebec The Canadian Metallurgical Quarterly is published by the Metallurgical Society of the Canadian Institute of Mining and Metallurgy as a contribution to the science and technology of metallurgy and materials science. Publications Committee Published Quarterly G.IRONS (Chairman) H. MCQUEEN Copyright © 1991 L. COLLINS J. NERI Canadian Institute of Mining and Metallurgy G. DEMOPOULOS W.S. REVIE G. KACHANIWSKY G.E.RUDDLE Disclaimer. Whilst every effort is made by the publishers and editorial board to see that no inaccurate or misleading data, opinion or statement appears in this journal, they wish to make it clear that the data and opinions appearing in the articles and advertisements herein are the sole responsibility of the contributor or advertiser concerned. 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Members of the Canadian Institute of Mining and Metallurgy may order personal subscriptions at a concessional rate and details of these rates are available on request. Microform and Back Issues: Back issues of all previously published volumes are available in hard copy and on microform direct from Pergamon Press offices. ec” The text paper used in this publication meets the minimum requirements of the American National Standard for Information Sciences Permanence of Paper for Printed Library Materials, ANSI Z39, 48 1984. Canadian Metallurgical Quarterly Volume 30, No. 1, January-March 1991 CONTENTS MINERALS AND MINERAL PROCESSING S.R. Rao and J. A. Finch Adsorption of amyl xanthate at pyrrhotite in the presence of nitrogen and implications in flotation CHEMICAL EXTRACTIVE METALLURGY P. J. Hancock, Z. Wang, Vacuum dezincing of silver crusts P. G. Evans and R. Harris Rui-Qing Li 15 Direct calculation of the spinodal line from miscibility gap boundaries R. J. Munz and E. J. Chin 21 The carbothermic reduction of niobium pentoxide and pyrochlore in a transferred arc argon plasma PHYSICAL METALLURGY AND MATERIALS F. Zok, J. D. Embury and 31 The influence of pressure on fracture of a Ti-V plate J.D. Boyd steel S.J. P. Durham, K. Shanker 39 Thermochemistry of the Si-O-N-C system with and R.A. L. Drew relation to the formation of silicon nitride S. D. Bhole and H. Yu 45 The mechanical properties of low carbon high manganese microalloyed steels MATERIALS PROPERTIES AND PROCESSING M. Sahoo, A. Lui, G. Morin 55 Mechanical properties and erosion behaviour of and V. K. Sikka nickel aluminides Canadian Metallurgical Quarterly Volume 30, No. 2, April-June 1991 CONTENTS MINERALS AND MINERAL PROCESSING Mangiu Xu, J. A. Finch and 71 Numerical solution to axial dispersion model in A. R. Laplante flotation column studies D. R. Nagaraj and A. Gorken 79 Potential-controlled flotation and depression of copper sulfides and oxides using hydrosulfide in non- xanthate systems Rajinder Pal and J. Masliyah 87 Process dynamics and control of a pilot flotation column CHEMICAL EXTRACTIVE METALLURGY T. T. Chen and J. E. Dutrizac 95 Mineralogical characterization of anode slimes: part 7—Copper anodes and anode slimes from the Chuquicamata Division of Codelco-Chile K. Grjotheim, P. Bezditka, A. Silny, 107 Electrochemical deposition of metals, alloys and K. MatiaSovsky and J. Stubergh oxygen from natural minerals—I!. Cathode processes in the electrodeposition of Si and Al from K-feldspar dissolved in cryolite PHYSICAL METALLURGY AND MATERIALS N. D. Ryan and H. J. McQueen 113 Bar mill torsional simulation of 304 stainless steel TECHNICAL NOTE P. Lambert, B. Champagne and 125 Oxidation and hot corrosion in Na,SO,-1 O%V 0. of B. Arseneault Ni-17Cr-6AI-O.5Y and _ WNi-16Cr-5.7AI-0.47Y-5Si MCIAITY alloys at 700°C Canadian Metallurgical Quarterly Volume 30, No. 3, July-September 1991 CONTENTS MINERALS AND MINERAL PROCESSING M.H. Moys and J. A. Finch 131 The use of temperature measurements in the analysis and control of flotation columns CHEMICAL AND EXTRACTIVE METALLURGY J.R.Wynnyckyj, E. Tackie and G. Chen 139 The problem of limited recoveries in the Pidgeon process for magnesium production K. Sugiyama, H. J. Ryu, Y. Waseda 145 Structural investigation of water quenched blast and J. M. Toguri furnace slags by X-ray diffraction E.W. Dewing 153 The chemistry of the alumina reduction cell S. J. Splinter, C. A. Pickles and 163 The effect of lead oxide additions on the viscosity of J. Cameron sodium borosilicate slags P. J. Tumidajski and J. M. Toguri 169 Thermodynamic properties of the Na-Se and Rb-Se systems T. T. Chen and J. E. Dutrizac 173 Mineralogical characterization of anode slimes: part 8—''silica’’ in copper anodes and anode slimes MATERIALS PROPERTIES AND PROCESSING J.C. Gonzalez, L. A. de Vedia, 187 Effect of carbon content on the characteristics of as- V. Raiter and |. Hrivnak welded and step-cooled AWS E-8018B2 type weld metal Canadian Metallurgical Quarterly Volume 30, No. 4, October-December 1991 CONTENTS 195 A guide to Canadian Graduate Studies in Metallurgy and Materials MINERALS AND MINERAL PROCESSING C. 0. Gomez, A. Uribe-Salas, J. A. Finch 201 Gas holdup measurement in flotation columns using and B. J. Huls electrical conductivity CHEMICAL AND EXTRACTIVE METALLURGY M. Askari and A. M. Cameron 207 Surface tensions of some CaO-MgO-AI,0.-SisOla,g s J. Schade, S. A. Argyropoulos and A. McLean 213 Assimilation and recovery characteristics of inno- vative cored wire additions for steelmaking D. J. Young and J. P. Orchard 227 Surface effects in sulfidation reactions MATERIALS PROPERTIES AND PROCESSING H. Fredriksson 235 On the solidification of steel ingots and continuously cast steel billets and slabs S. F. Moustafa 245 Infiltration technique conditions in producing SiC particle composites F. J. Bradley and C. A. Fung 251 Thermal analysis for shrinkage prediction § in commercial ductile iron castings S. Joo and R. |. L. Guthrie 261 Heat flow and inclusion behaviour in atundish for slab casting TECHNICAL NOTES P. J. Tumidajski 271 Densities of liquid K-Pb alloys by a dilatometric method P. Hancock and R. Harris 275 Solubility of calcium-magnesium-bismuth interme- tallic in molten lead LETTERS TO THE EDITOR M. W. Wadsley 277 Discussion of ‘“Theory and computation of two-metal and higher order predominance area diagrams’ by C. W. Bale C. W. Bale Author's Reply Volume 30 Contents and Author Index Reproduced with the permission of Pergamon Press Inc., by University Microfilms inc. 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