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Topic: Electrolytic Zinc Company

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	Process for solution control in an electrolytic zinc plant circuit - Patent 4437953
		The use of calcine instead of limestone as the precipitant of basic zinc sulphate is attractive as calcine is produced for subsequent leaching in most of the existing electrolytic zinc plant circuits and use of a portion in the SZP process plant does not preclude the subsequent extraction of its contained zinc content.
		The zinc content of the calcine and the solubility of its zinc content in weak acid are typical of calcines treated throughout the electrolytic zinc industry.
		The volume of zinc depleted solution entrained in 500 mls of reacted pulp before decantation was determined experimentally to be 407 mls by filtering the pulp and then drying the filter cake; the volume of entrained solution being the sum of the filtrate volume and the volume of water which was volatilised on drying.
	www.freepatentsonline.com /4437953.html (12117 words)

	::The Silver City :: Mining History ::
		The new company established a concentrating mill, initially on a British mine lease, and in 1910 on a lease held by the South Blocks company, to treat dump material purchased from existing mines.
		The De Bavay company was instrumental in establishing the Electrolytic Zinc Company of Australia Limited in Tasmania, to convert Broken Hill zinc concentrate into zinc bullion.
		An earlier Organisation Australian Metal Company Limited, had purchased residues and established a zinc treatment plant in Rakow Street in 1899.
	au.geocities.com /bhsilvercity/zcnbhc.htm (906 words)

	Flotation recovery of lead, silver and gold as sulfides from electrolytic zinc process residues - Patent 4385038
		The present invention relates to a process by which, in connection with an electrolytic zinc process and particularly the leaching process for zinc calcine, the recovery of lead, silver and gold from the iron-bearing residue is also effected in addition to a high recovery of zinc, copper and cadmium, in an economical and simple manner.
		Prior to 1965, it was common in an electrolytic zinc process to recover the zinc present primarily as zinc oxide and zinc sulfate by means of a dilute acid leach, whereas the undissolved ferritic material constituted a leach residue, which in several cases was directed to waste disposal areas.
		The iron is precipitated as goethite by using the zinc oxide of the zinc calcine for the neutralization of the sulfuric acid produced during the precipitation.
	www.freepatentsonline.com /4385038.html (4827 words)

	Iron Control in Zinc Pressure Leach Processes
		Since all zinc concentrates contain iron, and the iron minerals are leached during pressure leaching, the behavior of iron is controlled by the acid content of the pressure-leach solution.
		Since the iron minerals, with the exception of pyrite, are in competition with the zinc minerals for the acid, acid concentrations fall rapidly in the autoclave, and the hydrolysis and precipitation of iron is favored.
		In the process as practiced by Cominco, the bulk of the iron contained in the zinc concentrate fed to pressure leaching is initially extracted to solution, with a portion of the dissolved iron reprecipitating in the autoclave as plumbojarosite.
	www.tms.org /pubs/journals/JOM/9912/Buban-9912.html (2607 words)

	Tasmanian Minerals Council >> Zinc
		In 1916 an Australian company called Amalgamated Zinc was encouraged to develop a smelter in Tasmania, lured by the cheap hydro power, a willing labour force, good rail and shipping facilities, and the encouragement of the British government for facilities to be developed in allied territories.
		In the 1920s zinc ore was sourced from the Rosebery mine and mixed with ore from the Broken Hill mine, thus ensuring supply to the smelter.
		Zinc ore is mined in all states and the Northern Territory ranking Australia as first in the world for zinc resources, third in world mine production and second in exports.
	www.tasminerals.com.au /zinc.htm (2735 words)

	Handbook of Texas Online: LEAD AND ZINC PRODUCTION
		Lead and zinc occur with other minerals in Presidio, Hudspeth, Culberson, and Brewster counties, and there are deposits of lead ore in Blanco and Burnet counties and in the Llano area.
		Some zinc mineralization can be found in lead deposits of the Cambrian rocks in Central Texas, and zinc sulfide deposits occur with other minerals in the salt domes of the Gulf Coastal Plains.
		The American Smelting and Refining Company (ASARCOqv) plant at Corpus Christi was one of five in the nation using the electrolytic process, while plants at Amarillo and Dumas smelted zinc by the horizontal-retort method.
	www.tsha.utexas.edu /handbook/online/articles/LL/dkl1.html (1122 words)

	Walkabout - Rosebery
		It is a single purpose town which is clearly indicated by the Pasminco zinc mine which dominates both the town and the local economy.
		Zinc and lead were found in 1894 and by 1897 copper was being mined at Primrose.
		The economy and future of the town was fragile until 1920-21 when Electrolytic Zinc Company purchased the mines in the district, built houses for the mine workers, and invested in an elaborate aerial ropeway to move ore from the Hercules mine to Rosebery.
	www.walkabout.com.au /theage/locations/TASRosebery.shtml (676 words)

	Zinc
		Zinc is required in the diet in such small amounts that it is always present in a normal diet without the need for supplementation.
		Pure zinc shows almost no reaction with water or dilute acids, because of the formation of a thin layer of hydrogen gas on its surface, or "polarization." Impure zinc, or zinc in the presence of copper or platinum, reacts readily with the evolution of hydrogen.
		Zinc sulphate is less toxic, and is used in medicine as an astringent and antiseptic, and also as a mordant, because gelatinous zinc hydroxide is produced when it is hydrolyzed.
	www.du.edu /~jcalvert/phys/zinc.htm (6855 words)

	Wallace G. Woolf
		Woolf joined the Bunker Hill Company in 1918, and was given the specific assignment to develop a process for handling the complex zinc ores of the Coeur d'Alene mining district.
		Encouraged by his results, in 1926 the company went ahead with construction of a zinc processing plant which he, with the help of U.C. Tainton, designed and built.
		More information on the Bunker Hill zinc plant which Woolf helped to design and for thirty years manage, may be found in the records of the Bunker Hill Company, Manuscript Group 367.
	www.lib.uidaho.edu /special-collections/Manuscripts/mg375.htm (914 words)

	Articles - Battery (electricity) (Site not responding. Last check: 2007-10-09)
		The Daniell cell consisted of copper and zinc plates and copper and zinc sulfates.
		To prevent spilling, the electrolyte in traction batteries (secondary batteries or accumulators) is gelled.
		The electrolyte may also be embedded in a glass wool which is wound so that the cells have a round cross-sectional area (AGM-type).
	www.depotize.com /articles/Battery_(electricity) (2928 words)

	U. S. Steel - Sheet Products - Coated Sheet - Production Methods - Electrolytic Coating (Site not responding. Last check: 2007-10-09)
		The sheet is fed from a coil at the entry end of the line into an electrolytic cleaning unit, where a combination of fast-flowing alkaline solution and high-density electrical current remove oils, lubricants and other surface contaminants.
		Deposition of the coating is accomplished by the use of an electric current to deposit zinc (or in the case of the zinc-iron alloy coating, deposit zinc and iron) from the liquid solution onto the steel surface.
		Consumable zinc anodes are positioned close to the steel in the plating cells to maintain the required zinc content of the plating solution.
	www.usx.com /corp/sheet/coated/eleccoat.htm (600 words)

	Lingo - The Language of Coin Collecting
		An alloy of copper, tin and zinc, with copper the principal metal.
		A duplicate coin created by the electrolytic method, in which metal is deposited into a mold made from the original.
		Currently, the Lincoln cent is struck on planchets composed of a zinc core and a 5% copper coating.
	www.pcgs.com /lingo.chtml?universeid=313&letter=0 (10948 words)

	AAS-Biographical memoirs-Wark
		Although the work on the physical and chemical principles underlying the electrodeposition of zinc was important to the company and was of a highly original nature, company policy precluded publication and it was not until 1964 that the company allowed publication of one aspect of the work.
		Cobalt, derived from the Broken Hill ore and always a minor constituent of the Risdon circuit liquors, was known to have a deleterious effect on the current efficiency of the zinc deposition process, the understanding of the way in which cobalt affected the electrolytic process was a major goal of the research.
		The deterioration in current efficiency, that is, reduction in the electrodeposition of zinc, was considered by Wark to originate in the lower hydrogen overvoltage of the cobalt deposited with the zinc on the cathode than that of zinc itself.
	www.science.org.au /academy/memoirs/wark.htm (11554 words)

	Chengjiang Phsophorus Chemical Jinlong Co.,Ltd. - Zinc ingot metal ;Yellow phosphorus ;zinc ore;graphite electrode; ... (Site not responding. Last check: 2007-10-09)
		The headquarters of our company is located in Chengjiang county of Yunnan province.
		Our company enjoys a convenient transportation for it is only 52KM from Kunming which is the capital of Yunnan.
		Main materials of our company: zinc ore, graphite electrode, zinc ash, manganese powder, strontium carbonate, potassium antimony tartrate, No.3 coagulant.
	zincingotmetal.ec51.com /index.html (191 words)

	E-MJ - Engineering & Mining Journal : Chelyabinsk zinc expects to bring 200K mt/yr of modernized electrolytic zinc ... (Site not responding. Last check: 2007-10-09)
		Chelyabinsk zinc expects to bring 200K mt/yr of modernized electrolytic zinc capacity.
		Chelyabinsk Zinc expects to bring 200K mt/yr of modernized electrolytic zinc capacity into production by year-end 2001.
		Chelyabinsk Zinc is controlled by London-based Euromin, which is affiliated with Vitol SA, registered in Switzerland.
	static.highbeam.com /e/emjengineeringampminingjournal/october012001/chelyabinskzincexpectstobring200kmtyrofmodernizede/index.html (324 words)

	Tawas Plating Co. & Tawas Powder Coating, Inc.
		The services offered include electrolytic zinc plating (both rack and barrel), electroless nickel plating (with associated aging process) and powder coating (multiple colors of epoxy, polyester and acrylics).
		Our companies are charter members of the EPA's Strategic Goals Program which is an initiative sponsored by the EPA for a voluntary commitment to "better than compliance" environmental performance.
		The mission of Tawas Plating Company and Tawas Powder Coating, Inc. is to provide quality metal finishing services utilizing our multi-disciplinary teams, empowered personnel and a philosophy of continuous improvement.
	www.tawasplating.com (320 words)

	EPA News Release 03-OPA138: EPA cites Big River Zinc for clean-air violations
		EPA alleges Big River Zinc constructed two zinc roasters without notifying EPA and without doing timely performance tests and notifying EPA of test results.
		The company also failed to comply with sulfur dioxide emission limits.
		Big River Zinc has 30 days from receipt of the notice to hold a meeting with EPA to discuss the allegations and how to resolve them.
	www.epa.gov /reg5oopa/news/news03/03opa138.htm (239 words)

	Electrolytic Zinc Company of Australasia Limited - Agreements Database Organisation
		Summary Information: The Electrolytic Zinc Company of Australasia was established in 1916.
		The company mined lead, zinc and silver, as well as refining zinc and zinc alloys and manufacturing sulphuric acid and fertilisers.
		Sources used to compile this entry: Australian Science at Work, 'Electrolytic Zinc Company of Australasia (1916 -)': http://www.austehc.unimelb.edu.au/asaw/biogs/A001022b.htm (at 10 June 2005).
	www.atns.net.au /biogs/A001265b.htm (145 words)

	Boycott Woodchipping Campaign, North Corporate Profile
		The Ranger ore body was discovered in 1969 by a joint venture established by Peko Wallsend Operations Ltd (Peko) and The Electrolytic Zinc Company of Australia Ltd (EZ).
		The company currently has an ore stockpile sufficient to meet its contractual obligations for an estimated five years and also supplies around one third of its long term contracts through the provision of uranium originating from Kazakhstan.
		Two mining companies are currently active in the region: Mitsubishi at Cape Flattery and Comalco at Weipa.
	www.green.net.au /boycott/archive/north3.htm (2895 words)

	Chelyabinsk Electrolytic Zinc Plant[EBRD - Project Summary Document] (Site not responding. Last check: 2007-10-09)
		Chelyabinsk Electrolytic Zinc Plant is the largest zinc smelter in Russia.
		In general, the company appears to be making satisfactory progress on addressing the issues identified in the audit and analysis.
		The most significant emissions which need to be addressed are lead, sulphur dioxide and zinc oxide dust emissions, of which lead is classified as highly hazardous.
	www.ebrd.com /projects/psd/psd2000/2149.htm (634 words)

	China Chemical Reporter : A 50 000 t/a sulfuric acid put on stream in Qinghai. (Project News).(Qinghai West Zinc ... (Site not responding. Last check: 2007-10-09)
		Recently, Qinghai West Zinc Industry Co., Ltd. has put a 50 000 t/a sulfuric acid on stream on November 12, with an investment totaling RMB 120 million.
		Invested by Hunan King Stone Minerals Group, the company is a large scale private enterprise in Qinghai Province specialized in deep processing of nonferrous metals.
		With regard to the other two projects launched-a 30 000 t/a electrolytic zinc plating line and a 2000 t/a high purity zinc oxide, are expected to finish in the near future.
	static.elibrary.com /c/chinachemicalreporter/december162002/a50000tasulfuricacidputonstreaminqinghaiprojectnew/index.html (295 words)

	SARC Fellows (Site not responding. Last check: 2007-10-09)
		Included among these are works on the Glenorchy City, the Electrolytic Zinc Company and the Clarence District Football Club.
		She has also written three biographies of Australian women, has a doctorate in Tasmanian history, and is a Research Fellow in the Department of History at the University of Tasmania.
		He was born in Sydney and educated in Hobart at St Virgil's College and the University of Tasmania.
	www.anglicare-tas.org.au /research/sarc-fellows.html (1051 words)

	Beaudesert Rail - Locomotive 1105 (Site not responding. Last check: 2007-10-09)
		This 11 class loco is fitted with a 750hp Caterpillar D398 series B diesel engine and has a Volth Hydraulic unit - type 127-U. Seven engines of this type were built by Walkers Ltd in Maryborough, QLD.
		in 1975 for Electrolytic Zinc Company's Emu Bay Railway in Tasmania and were always worked in a set of four.
		In April 1998, they were all sold with the railway infrastructure to ATN-Tasrail when an air conditioner was added to this unit.
	www.beaudesertrail.com.au /1105.html (153 words)

	Agreements Database Type of Organisations - P
		A proprietary (or private) company is limited to no more than 50 members and operates with restricted rights of transfer of shares.
		A public company is one which is not incorporated as a proprietary company.
		It may or may not be listed on the stock exchange for the public sale of shares, although any company that is so listed, is a public company.
	www.atns.net.au /br_p_function_organisations.htm (370 words)

	Chelyabinsk Electrolytic Zinc Plant Russia Company Report ExportBureau
		For more than 50 years of development CEZP has become a large-scale enterprise of the Russian non-ferrous industry, namely zinc, cadmium, indium and other products.
		tons of zinc and zinc based alloys in 1999.
		This report should be used only as a guide to build a more informed opinion on potential international trading partners.
	www.exportbureau.com /company_report.html?code=3733 (122 words)

	Recycling Today Online :: :: » Mexican Company Settles Strike with Part of Work Force
		The company said late last year that it would cut copper output by 151,000 metric tons and zinc production by 88,000 metric tons this year as part of its cost-cutting overhaul.
		The mining giant said last month its fourth-quarter and full-year 2001 earnings were pummeled by unprecedented drops in the value of the metals it produces.
		Another 800 workers joined the strike at Grupo Mexico's electrolytic zinc refinery in San Luis Potosi state earlier this month after the company failed to meet union demands.
	www.recyclingtoday.com /news/news.asp?ID=2067&SubCatID=74&CatID=23 (328 words)

	ERA: History (Site not responding. Last check: 2007-10-09)
		The Ranger ore bodies were discovered in 1969 by joint venturers Electrolytic Zinc Company of Australasia Ltd (EZ) and Peko-Wallsend Operations Limited (Peko).
		The Ranger Uranium Environmental Inquiry (Fox Inquiry) was established in 1975 and following presentation of the final report in 1977, which found that uranium mining could proceed, an agreement covering mining was signed with the Northern Land Council, representing the interests of the Aboriginal owners of the area.
		ERA was established as a public Company in 1980 when the government decided to divest itself of its interests in the Ranger project.
	www.energyres.com.au /history.shtml (730 words)

	ZINC: Electrolytic Industrial Supplier's Directory of MacRAE'S BLUE BOOK (Site not responding. Last check: 2007-10-09)
		Top quality ZINC: Electrolytic manufacturers have been highlighted in this comprehensive source of industrial information.
		A broad range of ZINC: Electrolytic manufacturers has been complied in this industrial directory designed to provide information on leading, quality oriented manufacturers.
		Business Description: Electrolytic zinc and cadmium, sulphuric acid, zinc powder and zinc shot.
	www.macraesbluebook.com /BrowseP/Z/ZINC__Electrolytic.htm (100 words)

	AAS Biographical Memoirs - Ian William Wark 1899-1985
		and Electrolytic Zinc Co. of Australia Ltd. The mining companies of Broken Hill had pioneered the use of flotation (particularly differential flotation) processes in ore-dressing and had accumulated much practical experience without a great deal of scientific understanding of why or how the process worked.
		He did not succeed in isolating any pure solid compounds from reactions between sodium hydroxide and copper lactate, but was able to establish the presence of a complex copper-containing anion in alkaline solutions containing excess sodium lactate by using the Nernst formula to obtain the Cu*2+ ion concentration from single electrode potential measurements.
		It was a well-executed academic chemical study, but the conclusion that the bases of the complexes were 5-membered rings, while certainly correct, could not be established unequivocally at that time, even though the existence of complex anions of this class in the monobasic monohyroxy acids, mandelic and salicylic, left little alternative to this structure.
	www.asap.unimelb.edu.au /bsparcs/aasmemoirs/wark.htm (11639 words)

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