File:Silica crushing mill for Manhès-David converter lining.png
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Summary
[edit]DescriptionSilica crushing mill for Manhès-David converter lining.png |
Français : Broyeur de silice pour la confection du revêtement réfractaire des convertisseurs Manhès-David.
English: Silica crushing mill for Manhès-David converter lining.
Text appearing in the book BESSEMERIZING OF 45 TO 50 PER CENT. COPPER MATTE. The engravings represented on the following three pages are
made from photographs taken at the converter plant of the Anaconda Copper Mining Company, where a 45 to 50 per cent, matte is converted into about 99 per cent, metallic copper by means of twelve huge converters running continuously and producing over 225 tons of blister copper in twenty-four hours. Since the erection of the first converter in Butte City, 1884, a new era in the history of copper production can be dated, which together with the increased demand and a great many important and highly interesting improvements of late years have carried this metal to the very front. VIEW OF SILICA CRUSHING ROOM. The presence of small particles of blister copper in the escaping gases indicates to the converter tender that the charge is ready for casting. Directly back of the converter is located a stack and hood which connects with the dust chamber and receives the sulphurous gases as well as part of the slag discharged from the converter. The silica lining is omposed of about 28 per cent, fireclay and 72 per cent, crushed quartz. The quartz is reduced by crushers and rolls and afterwards mixed with the fire-clay in Chili mills as illustrated in the above engraving. The silica lining, attacked by the ferrous oxide will gradually decrease in thickness until relining and exchange of converter becomes necessary. Twenty-four extra converters are therefore always kept on hand. |
Date | |
Source | Catalogue no. 1, presented by the Anaconda Copper Mining Co., foundry department, manufacturers of mining, milling, concentrating and smelting machinery |
Author | Anaconda Company |
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[edit]Public domainPublic domainfalsefalse |
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This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
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Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Silica_crushing_mill_for_Manh%C3%A8s-David_converter_lining.png |
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File change date and time | 16:23, 18 December 2016 |