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Using Zinc Cathodes For Zinc Electrowinning
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Book Synopsis Using Zinc Cathodes for Zinc Electrowinning by : Ernest R. Cole
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:
Book Synopsis Zinc Electrowinning by : Roberto C. Villas-Bôas
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.
Book Synopsis Insoluble Anodes for Electrowinning Zinc and Other Metals by : Ernest R. Cole
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 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Using Zinc Cathodes for Zinc Electrowinning by : Ernest R. Cole
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:
Book Synopsis Effect of Impurities and Additives on the Electrowinning of Zinc by : Harold H. Fukubayashi
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:
Book Synopsis Fundamental Study of the Role of Cathode Structure on Zinc Electrowinning by : Horacio M. Aros
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
Book Synopsis Electrolytic Deposition and Hydrometallurgy of Zinc by : Oliver Caldwell Ralston
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 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electrowinning of Zinc from Zinc Chloride in Monopolar and Bipolar Fused-salt Cells by : S. D. Hill
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:
Book Synopsis Corrosion and Electrochemistry of Zinc by : Xiaoge Gregory Zhang
Download or read book Corrosion and Electrochemistry of Zinc written by Xiaoge Gregory Zhang and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: Humankind's use of zinc stretches back to antiquity, and it was a component in some of the earliest known alloy systems. Even though metallic zinc was not "discovered" in Europe until 1746 (by Marggral), zinc ores were used for making brass in biblical times, and an 87% zinc alloy was found in prehistoric ruins in Transylvania. Also, zinc (the metal) was produced in quantity in India as far back as the thirteenth century, well before it was recognized as being a separate element. The uses of zinc are manifold, ranging from galvanizing to die castings to electronics. It is a preferred anode material in high-energy-density batteries (e.g., Ni/Zn, Ag/Zn, ZnJair), so that its electrochemistry, particularly in alkaline media, has been extensively explored. In the passive state, zinc is photoelectrochemically active, with the passive film displaying n-type characteristics. For the same reason that zinc is considered to be an excellent battery anode, it has found extensive use as a sacrificial anode for the protection of ships and pipelines from corrosion. Indeed, aside from zinc's well-known attributes as an alloying element, its widespread use is principally due to its electrochemical properties, which include a well-placed position in the galvanic series for protecting iron and steel in natural aqueous environments and its reversible dissolution behavior in alkaline solutions.
Book Synopsis Electrodeposition of Zinc by : Glen C. Ware
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:
Book Synopsis The Electrowinning of Zinc in a Spouted Bed Electrode by : Juan Carlos Salas-Morales
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:
Book Synopsis The Effects of Addition Agents on Zinc Electrowinning from Kidd Creek Electrolyte by : D. J. MacKinnon
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:
Book Synopsis Nonferrous Waste as a Source of Zinc for Electrogalvanizing by : Ernest R. Cole
Download or read book Nonferrous Waste as a Source of Zinc for Electrogalvanizing written by Ernest R. Cole and published by . This book was released on 1987 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electrowinning Zinc from Zinc Chloride-alkali Metal Chloride Electrolytes by : United States. Bureau of Mines
Download or read book Electrowinning Zinc from Zinc Chloride-alkali Metal Chloride Electrolytes written by United States. Bureau of Mines and published by . This book was released on 1979 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Zinc Electrowinning Analysis in a Modified Hull Cell by : Thomas Dean McColm
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:
Book Synopsis Recovery of Zinc from Dross and Tin from Hardhead by Amalgam Electrolysis by : P. M. Sullivan
Download or read book Recovery of Zinc from Dross and Tin from Hardhead by Amalgam Electrolysis written by P. M. Sullivan and published by . This book was released on 1961 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electrolytic Recovery of Zinc from Galvanizers' Sal Skimmings by : P. M. Sullivan
Download or read book Electrolytic Recovery of Zinc from Galvanizers' Sal Skimmings written by P. M. Sullivan and published by . This book was released on 1956 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: