Mining and Scientific Press, Vol. 99: From July to December, 1909
Language: English
Published by Forgotten Books, 2024
- Softcover
- New
Seller: Forgotten Books, London, United KingdomForgotten Books
AbeBooks seller since June 2, 2021
Condition: New
£ 23.84
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Seller Inventory # 9781527785014_0
- Title
- Mining and Scientific Press, Vol. 99: From July to December, 1909
- Author
- T. A. Rickard, Courtenay de Kalb
- Publisher
- Forgotten Books
- Publication year
- 2024
- Condition
- New
- Book Type
- print-on-demand item
- Binding
- Paperback
- Language
- English
- ISBN 10
- 1527785017
- ISBN 13
- 9781527785014
- Seller catalogs
- General Engineering
Great deal of moisture is shipped to the smelters, that might be eliminated, and thus efl'ect important economies. For example, many moderately argillaceous ores contain 7 per cent or more of moisture. This material when dried will not re-absorb water from the air as readily as will coal or coke. In a good dryer from seven to eight pounds of water will be driven off per pound of coal burned. If ores were dried to-one per cent moisture, the elimination of 6 per cent would consume, only about 17 pounds of coal per ton, and at a Western price of $10 per ton for bituminous the cost would be less than 9 cents, plus extra labor. On the Tonopah ore and concentrate, for instance, which contain ap proximately 7 per cent water, the freight rate, on a valuation of $300 per ton, is $18; a saving of 6 per cent in that case would amount to per ton. The Coeur d'alene concentrate averages about 13 per cent moisture as delivered to the smelter. The freight on this material to Colorado is $8, and a saving of 12 per cent would reduce the cost 96 cents per ton. The so-called 'sulphurets' from the mills on the California 'gold Belt' contain from 3 to 10 per cent moisture, and the freight to market varies, se cording to distance, from to $6. Even here it may pay to dry the ore. In many plants enough heat is going to waste to effect this saving. The Nevada silicious ores would not benefit by such treatment. They rarely hold more than 2 per cent of moisture.
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Forgotten Books publishes hundreds of thousands of rare and classic books.
This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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