This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1899 Excerpt: ...we been able to induce the ferrous oxide produced from the matte to content itself with artificially supplied silica instead of robbing it from the lining. 2. Slag is made too rapidly when the matte contains much iron, and no method for its continuous removal from the converter has yet been successful. 3. The amount of ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1899 Excerpt: ...we been able to induce the ferrous oxide produced from the matte to content itself with artificially supplied silica instead of robbing it from the lining. 2. Slag is made too rapidly when the matte contains much iron, and no method for its continuous removal from the converter has yet been successful. 3. The amount of copper, or of rich matte, derived from a very low grade matte is too small to manipulate without some continuous method of introducing fresh matte. If these difficulties were obviated, and none of them appear insuperable, it seems to me that where coal is cheap and coke dear, as in many places in the West; or where water-power is available, as at Great Falls, Montana, our simplest and most economical way of handling such ores as those of Butte (or of most other American copper, and copper-silver-gold districts), will be to smelt them raw in large blast-furnaces with coke and a hot blast, creating a powerful reducing action, and running the low-grade matte continuously into Bessemer converters, where it will be blown up to a point when the resulting slag becomes rich enough to require resmelting, (which, with reverberatory settlers may be 60 per cent. or more). This matte, tapped, or run direct into the finishing converters, will yield a very small amount of slag for re-treatment, the operation being so regulated that there will be just enough converter slag to flux the highly siliceous raw ore in the blast-furnaces. I would propose to greatly contract the present processes of mechanical concentration at Butte, and a very small proportion of the copper thus rescued from loss would pay for the extra coke required to smelt the raw ore. The ore slags might easily run from 45 per cent. to 50 per cent. silica, and would be specifically very light, ...
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Add this copy of Modern Copper Smelting to cart. $50.00, very good condition, Sold by Pomfret Street Books rated 4.0 out of 5 stars, ships from Carlisle, PA, UNITED STATES, published 1895 by Scientific Publishing.
Add this copy of Modern Copper Smelting to cart. $66.37, new condition, Sold by Booksplease rated 3.0 out of 5 stars, ships from Southport, MERSEYSIDE, UNITED KINGDOM, published 2015 by Arkose Press.
