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Transactions of the American Foundrymen's Association Volume 26 (Paperback) Loot Price: R532
Discovery Miles 5 320
Transactions of the American Foundrymen's Association Volume 26 (Paperback): American Foundrymen Association

Transactions of the American Foundrymen's Association Volume 26 (Paperback)

American Foundrymen Association

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Loot Price R532 Discovery Miles 5 320

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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. 1918 Excerpt: ...caustic burn corresponds to the treatment of limestone in the production of quick lime. The raw magnesite is burned to from 1850 to 2000 degrees Fahr., in which state it retains about 3.0 per cent of its C02 content. This leaves the mass active and capable of recombining with various substances. In the dead burned variety, the magnesite is burned to a sinter. All the CO, is removed and the substance largely loses its power to recombine with other substances. It is nonhygroscopic and has all shrinkage removed; it becomes chemically inert and in this form acts as a refractory of good quality. It is burned to a temperature of 3260 degrees Fahr. As the Austrian magnesite contains 2.5 per cent iron oxide, it will burn to a dense mass at a lower temperature than the Grecian material and still be sufficiently refractory for commercial purposes. Magnesite brick are composed of 15 to 25 per cent low calcined magnesite, 2 to 3 per cent iron oxide added to increase the bond, and dead burned magnesite. About 50 per cent of the dead burned magnesite imported to this country is used directly in the grain form to sinter on to the bottom of open hearths and used as a cementing filler in other places, as in the basic bessemer converter. Iron oxide is added with the original raw batch of calcine and is added to the final mix in this form. These two ingredients, calcined magnesite and dead burned magnesite, are mixed together. Sometimes a binder is added, such as various tars, alkalies, etc., at the expense of the caustic magnesite. However, the common practice is to use no bond. The brick are molded by hand or pressed by steam, dried and burned. In order to provide a method of burning, compartments are built of silica brick; in these compartments the brick can be arranged in...

General

Imprint: Rarebooksclub.com
Country of origin: United States
Release date: March 2012
First published: March 2012
Authors: American Foundrymen Association
Dimensions: 246 x 189 x 10mm (L x W x T)
Format: Paperback - Trade
Pages: 190
ISBN-13: 978-1-130-09571-5
Categories: Books
LSN: 1-130-09571-1
Barcode: 9781130095715

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