The Principles, Operation And Products of the Blast Furnace
The book The Principles, Operation And Products of the Blast Furnace was written by author Johnson, J. E. (Joseph Esrey), B. 1870 Here you can read free online of The Principles, Operation And Products of the Blast Furnace book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Principles, Operation And Products of the Blast Furnace a good or bad book?
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EFFECT ON FLUE-DUST LOSS This is frequently the really controlling consideration as to the rate of driving in fine-ore practice. A. N. Diehl in presenting his paper "Data Pertaining to Gas Clean- ing" {Transactions of the American Institute of Mining Engineers, vol. 1, page 3) , stated verbally as the result of careful investigation that the sur- face of the stock in a modern furnace was in a continual state of "teeter, " particles rising and falling back continually in the gas current; under t...hese conditions some of the finer particles must be regularly carried over by the gas, and we know they are. The lifting power of a current on an individual particle increases as the square of the velocity, hence the num- ber of such particles which would be within the lifting power of a slightly increased gas current is very great, and as a result such an increase would quickly lead to a prohibitive flue-dust loss; in other words, the difference in rate of driving between an insignificant and a prohibitive flue-dust loss is a very small one, and the maximum permissible rate is found in this narrow range.
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