The Principles Operation and Products of the Blast Furnace (Classic Reprint)
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| Partner: | buecher.de |
| Hersteller: | Forgotten Books (Johnson, J. E.) |
| Stand: | 2015-08-04 03:50:33 |
Produktbeschreibung
Excerpt from The Principles Operation and Products of the Blast Furnace The rational subdivisions for a work on the blast furnace are: Construction, Principles, Operation and Product. Construction was treated in my recent book "Blast Furnace Construction in America." This volume treats of the last three subdivisions of the subject. The treatment of a subject from several different points of view involves a certain amount of repetition exactly as the mechanical engineer in making a drawing of a machine must show it on three planes of projection and must show some of the same parts in each view. The same conditions hold in presenting a complicated subject like the blast furnace. Any adequate treatment must show it from several points of view and a certain amount of repetition is not only inevitable but is desirable to drive home important considerations. The section on "Principles" might be called the theory of the blast furnace, but the word "theory" carries, to many minds, the unpleasant implication that it is something the opposite of practice, while it has been my greatest effort to develop a set of principles which should so thoroughly agree with practice that one would merge into the other, and that only an arbitrary dividing line could be drawn between them. The section on "Operation" may be criticized as inadequate to the vastness and importance of the subject, but the limitations of space must not be ignored. I have put into the chapters on operating difficulties a number of personal experiences which arc to some extent representative. Many other furnacemen have had experiences which I should like better to describe, but it is virtually impossible to obtain adequate descriptions of such experiences without living through them. It may be that some of my contentions in the section on "Products" will not be universally admitted for years to come, especially in regard to the effect of oxygen in cast iron, but the amount of proof available is so great that it has forced the acceptance of my conclusions by some of the highest authorities, and I confidently expect that others will follow. A chapter on "Commercial Considerations" is added at the close of the book, which I hope will be found to contain valuable information of a kind not usually given in technical books. I wish to acknowledge the help I have received in the form of facts and ideas from nearly all the furnacemen I have met. 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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