Excerpt from The Recovery of Nitrate From Chilean Caliche: Containing a Vocabulary of Terms an Account of the Shanks System, With a Criticism of Its Fundamental Features, and a Description of a New Progress
The introduction Of the Shanks system resulted in notable economies, as compared with previous practice, with the result that caliche of lower ley could be treated at a profit. The grade Of the material sent to the maquinas for the 20 years subsequent to the introduction of the Shanks system was probably fixed at a minimum of over 25 per cent., and in most cases averaged well over 30 per cent. Nitrate.
With the reduction in grade Of caliche being treated, a considerable decrease in percentage extraction Of nitrate, by existing methods, was observable. At all times, however, a veil Of mystery has been drawn over the actual results Of practice, and reliable figures were impossible to Obtain.
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Excerpt from The Recovery of Nitrate From Chilean Caliche: Containing a Vocabulary of Terms an Account of the Shanks System, With a Criticism of Its Fundamental Features, and a Description of a New Progress
Since the date of the first manufacture of nitrate from the caliche found in the (then) Peruvian pampa, during the early years of the 19th century, the developments in the industry have been almost entirely in connection with the application of new and improved processes for the purpose of making profitable the treatment of material of decreasing nitrate content. The average ley, or nitrate percentage, of the caliche treated during the first fifty years probably averaged at least 75 per cent. In the most primitive method of beneficiation the rich caliche was boiled with water or mother liquor in large copper pans by the direct application of heat; and the nitrate was then crystallised from the resulting strong solution.
About the Publisher
Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com
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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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Artikel-Nr. LW-9781330899625
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Artikel-Nr. LW-9781330899625
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