Download or read book Using Zinc Cathodes for Zinc Electrowinning written by Ernest R. Cole and published by . This book was released on 1979 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Using Zinc Cathodes for Zinc Electrowinning written by Ernest R. Cole and published by . This book was released on 1979 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Zinc Electrowinning written by Roberto C. Villas-Bôas and published by CYTED-CETEM. This book was released on with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive study on zinc electrowinning and the fundamentals and practices of the same, under the influence of several important industrial variables and impurities associated with the leached concentrate.
Download or read book Effect of Impurities and Additives on the Electrowinning of Zinc written by Harold H. Fukubayashi and published by . This book was released on 1974 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Insoluble Anodes for Electrowinning Zinc and Other Metals written by Ernest R. Cole and published by . This book was released on 1981 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamental Study of the Role of Cathode Structure on Zinc Electrowinning written by Horacio M. Aros and published by . This book was released on 1987 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The influence of cathode macromorphology on the current efficiency of zinc electrowinning was determined. The studies have shown that surface roughness affects current efficiency during zinc electrowinning, particularly when the electrolyte contains impurities such as nickel and antimony. Current efficiency does not change with surface roughness as long as the electrolyte is sufficiently pure. Zinc deposited on smooth zinc cathodes tends to retain a more favorable structure and macromorphology, which is less sensitive to the effects caused by antimony and nickel. Glue helps to counteract the effect of the impurities; however, its presence in the electrolyte at certain combinations with other additives produces an increase in surface roughness and a dramatic decrease in current efficiency. A definite relationship was observed between the data obtained by cyclic voltammetry and the long time current efficiency tests. A statistical screening design program was conducted to determine the individual effects and interactions of temperature (35-45°C), antimony (0.02-0.06 mg/l), nickel (1-5 mg/l), glue (5-15 mg/l) and acid concentrations (175-225 g/l) on current efficiency. The results show that smooth zinc cathodes are less susceptible to impurity attack while rough deposits give consistently lower current efficiencies than smooth zinc. Under certain conditions, glue proved to be an important factor in influencing roughness evolution. The influence of cathode current distribution on current efficiency was also investigated. The effect of current density (up to 50 mA/cm2) and sulfuric acid concentration (150-250 g/l) on current efficiency was determined. The results show that low current densities (up to 10 mA/cm2) cause an increase in hydrogen evolution and an eventual dissolution of the zinc deposits. At the same operating conditions of current efficiency tests (12 hour deposition time), cyclic voltammetry tests show that the current rise measurements present a good correlation with current efficiency. Electrolytes containing antimony and glue show that, at low current densities, glue does not completely counteract the effect that antimony and high acid concentrations have on current efficiency. A proper chemical balance of the electrolyte was very critical. The experimental results have shown that surface macromorphology of the electrode was an important factor to be considered in the evaluating the efficiency of zinc electrowinning. In addition, surface macromorphology plays an important role in the interpretation of the impurity effects"--Abstract, leaves iii-iv
Download or read book Electrowinning of Zinc from Zinc Chloride in Monopolar and Bipolar Fused salt Cells written by S. D. Hill and published by . This book was released on 1981 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of steelmaking slags by atomic absorption spectrophotometry using pressure dissolution written by Raymond F. Farrell and published by . This book was released on 1979 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Flammability of Coal Dust air Mixtures written by Martin Hertzberg and published by . This book was released on 1979 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Corrosion Resistance of Aluminum and Magnesium Alloys written by Edward Ghali and published by John Wiley & Sons. This book was released on 2010-05-05 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: Valuable information on corrosion fundamentals and applications of aluminum and magnesium Aluminum and magnesium alloys are receiving increased attention due to their light weight, abundance, and resistance to corrosion. In particular, when used in automobile manufacturing, these alloys promise reduced car weights, lower fuel consumption, and resulting environmental benefits. Meeting the need for a single source on this subject, Corrosion Resistance of Aluminum and Magnesium Alloys gives scientists, engineers, and students a one-stop reference for understanding both the corrosion fundamentals and applications relevant to these important light metals. Written by a world leader in the field, the text considers corrosion phenomena for the two metals in a systematic and parallel fashion. The coverage includes: The essentials of corrosion for aqueous, high temperature corrosion, and active-passive behavior of aluminum and magnesium alloys The performance and corrosion forms of aluminum alloys The performance and corrosion forms of magnesium alloys Corrosion prevention methods such as coatings for aluminum and magnesium Electrochemical methods of corrosion investigation and their application to aluminum and magnesium alloys Offering case studies and detailed references, Corrosion Resistance of Aluminum and Magnesium Alloys provides an essential, up-to-date resource for graduate-level study, as well as a working reference for professionals using aluminum, magnesium, and their alloys.
Download or read book The Effects of Addition Agents on Zinc Electrowinning from Kidd Creek Electrolyte written by D. J. MacKinnon and published by . This book was released on 1990 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electrometallurgy 2012 written by Michael L. Free and published by John Wiley & Sons. This book was released on 2012-05-09 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a symposium sponsored by The Metallurgy and Materials Society of CIM and the Hydrometallurgy and Electrometallurgy Committee of the Extraction and Processing Division of TMS (The Minerals, Metals & Materials Society) Held during the TMS 2012 Annual Meeting & Exhibition Orlando, Florida, USA, March 11-15, 2012
Download or read book The Electrowinning of Zinc in a Spouted Bed Electrode written by Juan Carlos Salas-Morales and published by . This book was released on 1994 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of Investigations written by and published by . This book was released on with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Zinc Electrowinning Analysis in a Modified Hull Cell written by Thomas Dean McColm and published by . This book was released on 1998 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electrolytic Deposition and Hydrometallurgy of Zinc written by Oliver Caldwell Ralston and published by . This book was released on 1921 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electrodeposition of Zinc written by Glen C. Ware and published by . This book was released on 1963 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
