Evaluation Of Potential Exposures At An Electrolytic Manganese Dioxide Processing Plant
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Author | : Srinivas Durgam |
Publisher | : |
Total Pages | : 35 |
Release | : 2010 |
Genre | : Battery industry |
ISBN | : |
Download Evaluation of Potential Exposures at an Electrolytic Manganese Dioxide Processing Plant Book in PDF, Epub and Kindle
Author | : Centers for Disease Control and Prevention |
Publisher | : CreateSpace |
Total Pages | : 44 |
Release | : 2013-10-25 |
Genre | : Health & Fitness |
ISBN | : 9781493537570 |
Download Evaluation of Potential Exposures at an Electrolytic Manganese Dioxide Processing Plant Book in PDF, Epub and Kindle
NIOSH received an HHE request from a representative of the International Union of Operating Engineers Local 369 at Erachem Comilog, Inc , in New Johnsonville, Tennessee. The requestors were concerned about exposure to cobalt and nickel in the filter mud, manganese dust in the production areas, and sulfuric acid mist in the cell rooms. The health effects reported were cancer, lung problems, skin and eye irritation, nausea, and exhaustion. We conducted site visits in October 2007, February 2008, and August 2008.
Author | : National Institute for Occupational Safety and Health |
Publisher | : |
Total Pages | : 20 |
Release | : 1995 |
Genre | : Government publications |
ISBN | : |
Download Eveready Battery Company, Marietta, Ohio Book in PDF, Epub and Kindle
Author | : |
Publisher | : DIANE Publishing |
Total Pages | : 29 |
Release | : |
Genre | : |
ISBN | : 1457823764 |
Download Electrolytic Manganese Dioxide from Greece and Japan, Invs. 731-TA-406- and 408 (Review) Book in PDF, Epub and Kindle
Author | : |
Publisher | : DIANE Publishing |
Total Pages | : 91 |
Release | : |
Genre | : |
ISBN | : 1428954899 |
Download Electrolytic Manganese Dioxide from Australia, China, Greece, Ireland, Japan, and South Africa Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 56 |
Release | : 1983 |
Genre | : |
ISBN | : |
Download The Production of Electrolytic Manganese Dioxide from Furnace Sludge Book in PDF, Epub and Kindle
The ferromanganese furnaces of the sponsor produce fines that are collected in scrubbers and are then impounded as a waste product (furnace sludge). The Council for Mineral Technology (Mintek) tested various leaching procedures to solubilize the manganese constituent (about 25 per cent) and to convert the manganese sulphate liquor to battery-grade electrolytic manganese dioxide (EMD) by electrolysis. Continuous runs were conducted on miniplant scale (with a 4-litre electrolytic cell) and on pilot-plant scale (with a 1500-litre electrolytic cell). Several types and shapes of electrode were tested, including carbon, graphite, and titanium rods, and titanium sheets. A number of Japanese and other international standard samples were analysed for comparison with the material produced at Mintek. A comparison was also made between the material produced from prereduced manganese ore and that produced from furnace fines. The recovery of manganese from the furnace fines was about 75 per cent. However, the leach liquors had to be purified for the removal of soluble organic matter. The operation of the electrolytic cell was optimized, and internationally acceptable grades of EMD were produced: Electrolyte 35 to 40 g of H2SO4 and 60 g of Mn per litre. Cell temperature 90 to 93 C. Current density 80 A/m2. Current efficiencies 85 to 90 per cent. Corrugated titanium sheets coated with ruthenium oxide to prevent passivation gave the best quality of EMD (with an available oxygen content, expressed as MnO2, of 92 per cent, which is better than the international specification of 90 per cent MnO2 as minimum). Batches of the material produced at Mintek were submitted to battery manufacturers in the UK, Japan, Germany, and the USA for evaluation.
Author | : |
Publisher | : |
Total Pages | : |
Release | : 1985 |
Genre | : |
ISBN | : |
Download The Production of Electrolytic Manganese Dioxide from Ferromanganese-furnace Sludge Book in PDF, Epub and Kindle
Worldwide, the demand for dry-cell batteries has a growth rate of 4 to 5 per cent per annum. South Africa, with its large deposits of manganese ore and relatively cheap electric power, would seem to be in a very favourable position to manufacture the manganese dioxide required for such batteries. However, naturally occurring manganese dioxide and chemically produced manganese dioxide are not suitable in the application of 'heavy drainage cells', which call for electrolytic manganese dioxide (E.M.D.). This paper describes an extensive investigation undertaken at the Council for Mineral Technology into the suitability of ferromanganese-furnace scrubber sludge as a raw material for the production of E.M.D. The characteristics of the sludge were determined with regard to its leachability, acid consumption, impurities, and filtration, the objects of the study being a demonstration that battery-grade E.M.D. can be produced from ferromanganese-furnace sludge, and the production of sufficient E.M.D. of acceptable grade for evaluation by battery manufacturers. All aspects of the process were optimized, first in a miniplant and then on a pilot plant producing about 15 kg of E.M.D. every 24 hours. The various problems that were encountered were overcome, titanium anodes being used instead of the usual lead or graphite anodes that are mostly used commercially. The final product conformed to international standards, and current efficiencies of 80 to 90 per cent were obtained.
Author | : William C. Aitkenhead |
Publisher | : |
Total Pages | : 43 |
Release | : 1953 |
Genre | : |
ISBN | : |
Download The Production of Electrolytic Manganese Dioxide Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 1438 |
Release | : 2006 |
Genre | : |
ISBN | : |
Download Plumas National Forest (N.F.), Lake Davis Pike Eradication Project Book in PDF, Epub and Kindle
Author | : Rodney Patrick Williams |
Publisher | : |
Total Pages | : 306 |
Release | : 1995 |
Genre | : Dissertations, Academic |
ISBN | : |
Download Characterisation and Production of High Performance Electrolytic Manganese Dioxide for Use in Primary Alkaline Cells Book in PDF, Epub and Kindle