... receptacle similar to a baker's oven, previously brought to a red heat. Here the door is constantly open, and the heat of the oven is sufficient to dissipate all the bitumen, of the coals, the disengagement of which is promoted by frequently stirring... The Emporium of Arts & Sciences - Page 113edited by - 1815Full view - About this book
| Samuel Parkes - 1814 - 584 pages
...disengagement of Which is promoted by frequently stirring with a long iron rake. The coak from theso ovens, though made with the same kind of coal, is...and as light as pumice-stone. I am indebted to Mr. Cnrr, steward to his Grace the Duke of Norfolk, for these particulars, who very politely attended me... | |
| Samuel Parkes - 1816 - 584 pages
...coals, the disengagement of which is promoted by frequently stirring with a long iron rake. The coke from these ovens, though made with the same kind of...the Duke of Norfolk, for these particulars, who very politely attended me through the work? in the year 1 802, and assisted mo iu taking the necessary measurements,... | |
| Arthur Jewitt - 1817 - 592 pages
...to be more of the nature of charcoal, the process is conducted in a different manner. The small-coal is thrown into a large receptacle similar to a baker's...produced by the former operation ; this being intensely bluck, very porous. «»il as light as pumice-stone." The eame author, in his Chemical Essays, vol.... | |
| Samuel Parkes - 1818 - 616 pages
...heat of the oven is sufficient to dissipate all the bitumen of the coals, the disengagement of whii h is promoted by frequently stirring with a long iron...Mr. Curr, steward to His Grace the Duke of Norfolk, fur these particulars, who very politely attended me through the works in the year li'O'J, and assisted... | |
| John Holland - 1831 - 364 pages
...coals, the disengagement of which is promoted by frequently stirring with a long iron rake. The coke from these ovens, though made with the same kind of...being intensely black, very porous, and as light as pumice stone." Both these descriptions of coke enter into the process of smelting ; the former is capable,... | |
| Luke Hebert - 1835 - 816 pages
...which is promoted by frequently stirring it with a long rake. The coke from the ovens, though made from the same kind of coal, is very different from that...being intensely black, very porous, and as light as pumice stone. Under the article LIME-BURNINO, a drawing and description of a patent oven for making... | |
| John Holland - 1835 - 516 pages
...upon the mass during combustion. The coke made by this method, though the same kind of coal be used, is very different from that produced by the former...black, very porous, and as light as pumice-stone. It is used for a variety of purposes ; but when intended for the iron and steel forges, great care... | |
| John Holland - 1835 - 514 pages
...upon the mass during combustion. The coke made by this method, though the same kind of coal be used, is very different from that produced by the former...black, very porous, and as light as pumice-stone. It is used for a variety of purposes ; but when intended for the iron and steel forges, great care... | |
| John Percy - 1861 - 666 pages
...disengagement of which is promoted by frequently stirring the coal with a long iron rake. The coke from these ovens, though made with the same kind of...different from that produced by the former operation (;'. e. as practised in ovens of the Duke of Norfolk's colliery, described at p. 157); this being intensely... | |
| John Percy - 1875 - 662 pages
...disengagement of which is promoted by frequently stirring the coal with a long iron rake. The coke from these ovens, though made with the same kind of...different from that produced by the former operation (ie of coking, as practised in ovens of the Duke of Norfolk's colliery, and described at p. 431); this... | |
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