2 edition of Nonferrous waste as a source of zinc for electrogalvanizing found in the catalog.
Nonferrous waste as a source of zinc for electrogalvanizing
Cole, E. R.
Bibliography: p. 20.
|Statement||by E.R. Cole, Jr., M. Dattilo, and T.J. O"Keefe.|
|Series||Report of investigations ;, 9125, Report of investigations (United States. Bureau of Mines) ;, 9125.|
|Contributions||Dattilo, M., O"Keefe, T. J.|
|LC Classifications||TN23 .U43 no. 9125, TN796 .U43 no. 9125|
|The Physical Object|
|Pagination||ii, 20 p. :|
|Number of Pages||20|
|LC Control Number||87600148|
Table of ContentsWasteWireZinc ExtractionPurification of Leach SolutionsElectrolyteElectrocleaningElectrogalvanizingDrawingCorrosion TestingCyclic VoltammetryZinc. Regardless of whether it's non-ferrous metal recovery from waste incineration ash, e-waste, shredder operation or dry-mechanical sorting of mixed metal-bearing residues. The product (ZORBA) from this non-ferrous separator is a valuable input to further separate and upgrade the inherent non-ferrous .
The comparative account of zinc content in different hazardous zinc resources are presented in Table 1. In addition, zinc production is primarily driven by the steel market, which accounts for PART SUBPART A - GENERAL DOC: (84) Key Words: Regulations: Subject: Addressee: Originator: Source Doc: Date: Summary: Zinc Plating, Electroplating 40 CFR Parts , Zinc Plating (waste streams) Michael Sanderson, Chief, Air and Hazardous Waste Compliance Branch", Air and Hazardous Materials Division, Region VII Matthew A. Straus, Chief, Waste .
Globally, the zinc-lead mining industries have been facing challenge towards recovery of metals from waste. Industry sources estimate that Hindustan Zinc loses ab MT of metal per annum in this waste. The most successful process for recovery of metals, without the formation of Jarosite, is Zinc Fumer Plant. Alkaline Cyanide Zinc Plating. For a long time, cyanide zinc plating was the workhorse of the industry, though its popularity has significantly decreased over the years in the U.S. and other countries. Use of cyanide zinc will continue to dwindle as platers look to reduce waste treatment and hazardous waste classification concern.
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Additional Physical Format: Online version: Cole, E.R. (Ernest R.). Nonferrous waste as a source of zinc for electrogalvanizing (OCoLC) Document Type. Demonstration of the use of a waste zinc electrolyte in an industrial pilot plant was successful.
These results show that although it is difficult to produce pure zinc from waste sources of zinc oxide, the material is suitable for electrogalvanizing. This allows a more efficient use of waste zinc in the industrial by: 2. Electrogalvanizing using zinc recovered from nonferrous smelter dusts and other values from waste products and thus promote the wise and efficient use of the resources of the U.S.A.
In line with this objective, Bureau researchers are investigating the use of waste products containing zinc as a source of zinc for electrogalvanizing.
Cited by: 2. Nonferrous waste as a source of zinc for electrogalvanizing / By E. (Ernest R.) Cole, T. (Thomas J.) O'Keefe and M. (Marion) Dattilo Abstract. Nonferrous waste as a source of zinc for electrogalvanizing. (contract h) investigated the use of nonferrous flue dust with varying zn contents (11 to 66 pct) as a source of zn for electrogalvanizing steel wire.
The waste dusts used were from a secondary cu smelter, a brass smelter, a pb smelter, and a water treatment plant. Open Library is an open, editable library catalog, building towards a web page for every book ever published.
Read, borrow, and discover more than 3M books for free. Electrogalvanizing is a process in which a layer of zinc is bonded to steel in order to protect against process involves electroplating, running a current of electricity through a saline/zinc solution with a zinc anode and steel conductor.
Zinc electroplating maintains a dominant position among other electroplating process options, based upon electroplated tonnage per annum. From October through Septemberresearchers at the Bureau and at the University of Missouri--Rolla (contract h) investigated the use of nonferrous flue dust with varying zn contents (11 to 66 pct) as a source of zn for electrogalvanizing steel wire.
The waste dusts used were from a secondary cu smelter, a brass smelter, a pb. Bureau of Mines recycling research devises technology that enables the recovery of metals, minerals, and other values from waste products and thus promotes the wise and efficient use of resources.
Bureau researchers are investigating the use of waste products containing zinc as a source of zinc for electrogalvanizing. Cole ER, Dattilo M, O'Keefe TJ () Nonferrous waste as a source of zinc for electrogalvanizing. US Department of the Interior, Bureau of Mines Google Scholar Creamer NJ, Baxter-Plant VS, Henderson J, Potter M, Macaskie LE () Palladium and gold removal and recovery from precious metal solutions and electronic scrap leachates by.
The waste source of zinc was brass smelter flue dust. Corrosion rates were measured by Tafel line extrapolation and the polarization resistance technique.
Values of the Tafel slopes and the corrosion currents were also compared with those for pure zinc (%). Zinc, a crystalline metal with moderate strength and ductility, is seldom used alone except as a coating. In addition to its metal and alloy forms, zinc also extends the life of other materials such as steel (by hot dipping or electrogalvanizing), rubber and plastics (as an aging inhibitor), and wood (in paints).
Hot-dip galvanization is a form of is the process of coating iron and steel with zinc, which alloys with the surface of the base metal when immersing the metal in a bath of molten zinc at a temperature of around °C ( °F). When exposed to the atmosphere, the pure zinc (Zn) reacts with oxygen (O 2) to form zinc oxide (), which further reacts with carbon dioxide (CO 2.
Waste treatment in zinc plating. A discussion started in but continuing through Q. We're having trouble producing a true solid from our waste treatment of electrozinc rinsewaters.
We have a typical chemical precipitation process. Our sludge is too wet, more of a slurry at times. We have tried alum and lime.
No major improvements. ZINC OR COPPER FILTER CAKES We are looking for cheap sources of copper and zinc. We have considered zinc and copper hydroxide filter cakes and muds, or similar.
We can purchase several thousand tons of materials that are not hazardous waste and would appreciate any ideas.
Thanks, Fernando Munoz Engineer - Conyers, Georgia, USA. The 80+ volume Annual Book of ASTM Standards contains ASTM's 12,+ standards and is available in print and online formats. The volumes can be purchased individually, as a section (at a 25% discount) or as the complete 80+ volume set (at a 50% discount).
"The U.S. Bureau of Mines has been conducting research on the use of waste-derived zinc as a partial replacement for pure zinc in the electrogalvanizing process.
The end product of this process is automotive sheet, which has enhanced cosmetic protection over previously used cold-rolled (cr) steel.
This electro-deposited zinc coating consists of pure zinc tightly adherent to the steel. The coating is highly ductile remaining intact even after severe deformation.
Produced on strip and sheet materials, the coating weight ranges up to oz/ft 2 (60 g/m 2), or thicknessesup to mils (?m) per side, while on wire, coating weights may. Impurities in the waste electrolyte caused some problems. Copper was undesirable because it passivated the soluble zinc anode.
Other impurities such as cobalt and nickel were more tolerable but also slowly coated the anode. Owing to the ease of removal of copper by cementation, it posed no processing problem for electrogalvanizing. Zinc is commonly found in the earth's crust, and natural releases to the environment can be significant.
In addition, zinc is one of the most widely used metals in the world. The major industrial sources of zinc include electroplating, smelting and ore processing, and drainage from both active and inactive mining operations (Mirenda ).
This Article describes the zinc and zinc alloys for decorative and functional applications. It focuses on the types of zinc coatings, namely, hot dip galvanizing, electrogalvanizing, metallizing, and mechanical galvanizing. The Article covers the uses of zinc alloy castings, including pressure die.
Since zinc is specifically exempted and iron and cobalt were not evaluated as hazardous constituents in the F background documents, zinc-iron and zinc-cobalt plating would not cause the filter press cake to become a “listed” hazardous waste.Zinc Recycling Zinc is an inherently recyclable non-ferrous metal and can be recycled indefinitely without any loss of physical or chemical properties.
At present, approximately 70% of zinc comes from primary refining of zinc ores (including % from recycled sources) and about 30% comes directly from recycled zinc (representing 80% of the zinc available for [ ].