Lead Smelting And Refining With Some Notes On Lead Mining
Lead Smelting And Refining With Some Notes On Lead Mining
Walter Renton Ingalls
The book Lead Smelting And Refining With Some Notes On Lead Mining was written by author Walter Renton Ingalls Here you can read free online of Lead Smelting And Refining With Some Notes On Lead Mining book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Lead Smelting And Refining With Some Notes On Lead Mining a good or bad book?
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Mr. Bretherton remarked that he had been recently informed by August Raht that by actual experiment the loss with the ordinary rotary blowers was 100 per cent, under 10 Ib. Pressure; that is, it was possible to shut all the gates so that there was no outlet for the blast to escape from the blower and the pressure was only 10 Ib. , or in other words the blower would deliver no air against 10 Ib. Pressure. For that reason Mr. Raht expressed himself as being in favor of blowing engines for lead bl...ast furnaces. This is of special interest, inasmuch as it comes from one who is recognized as standing in the first rank of lead-smelting engineers. Mr. Raht is not alone in holding the opinion he does. The rotary blower did good service in the old days when the air was blown into the lead blast furnace at comparatively mod- erate pressure. At the present time, when the blast pressure employed is commonly 40 oz. At least, and sometimes as high as 48 oz. , the deficiencies of the rotary blower have become more apparent.
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