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Metals, Their Properties and Treatment (Paperback) Loot Price: R385
Discovery Miles 3 850
Metals, Their Properties and Treatment (Paperback): Charles Loudon Bloxam

Metals, Their Properties and Treatment (Paperback)

Charles Loudon Bloxam

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Loot Price R385 Discovery Miles 3 850

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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. 1872 Excerpt: ...Moor, in Cumberland, at Lead Hills in Scotland, at Aix-la-Chapelle, at Tarnowitz in Silesia, in the north-west of Spain, and in many other places. It sometimes contains more than two parts of cadmium in the hundred. In Spain, the carbonate of zinc is found in combination with the hydrated oxide of zinc, so that the ore contains as much as 57 parts of zinc in the hundred. Beds of calamine are reported to have been recently found in Sardinia. The chief English zinc-works are situated in Birmingham and Bristol, where the ores from the Mendip Hills and Flintshire are smelted; in Sheffield, where the ore is procured from Alston Moor; and at Swansea, Wigan, Llanelly, and Wrexham In order to extract zinc from its ores, advantage is taken of the comparative facility with which the metal is converted into vapour, since it boils and distils freely at a temperature estimated at about 19000 F., a bright red heat, somewhat below the melting point of copper. The ores are calcined so as to obtain the zinc in the form of oxide, which is then mixed with carbon and distilled, when the oxygen passes off in combination with the carbon as carbonic oxide gas, and the zinc is given off in vapour which is condensed again. The mode in which the operation is carried out differs in different works, but the principle of the process is always the same. Calamine is the principal ore treated in this country, and is sometimes smelted without previous calcination, because the.carbonic acid which is combined with the oxide of zinc can be driven off in the smelting process itself; but the calcination or roasting of blende is indispensable, to enable the oxygen of the air to convert the zinc into oxide, and to carry off, in the form of sulphurous acid gas, the sulphur previously in combinatio...

General

Imprint: Rarebooksclub.com
Country of origin: United States
Release date: May 2012
First published: May 2012
Authors: Charles Loudon Bloxam
Dimensions: 246 x 189 x 5mm (L x W x T)
Format: Paperback - Trade
Pages: 94
ISBN-13: 978-1-236-05941-3
Categories: Books > Humanities > History
Books > Humanities > History > General
Books > History > General
LSN: 1-236-05941-7
Barcode: 9781236059413

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