โ Scribed by W.A. Dunkley
No coin nor oath required. For personal study only.
As the result of experiments conducted by the Bureau of Mines and the University of North Dakota, a lignite carbonizer, simple in construction and operation, and with a relatively very low first cost, has been devised. This oven was developed to fill the need for an oven which can be cheaply built and intermittently operated by lignite mine owners, yielding a char which can, if desired, be used as fuel without further processing.
By-products--gas and tar--are not recovered in the operation of this carbonizer, but with certain alterations in design they may be recovered, although they probably will not be as valuable as the by-products from other carbonizers are usually rated. The carbonizer may be operated intermittently without serious damage to it. Lignite char can be made at a much lower cost (approximately $I.25 per ton less) in this oven than in the by-product ovens hitherto suggested for carbonizing lignite. This is chiefly due to the large capacity and low cost of the carbonizer. Details regarding this lignite carbonizer are given in Serial 244I, of the Bureau of Mines, Department of the Interior.
Following the favorable tests on lignites of North Dakota, by the Bureau of Mines in co6peration with the University of North Dakota, arrangements were made for operating the vertical carbonizing oven at Grand Forks, North Dakota, using Canadian lignite. The present work is being done in co6peration with the Canadian Lignite Utilization Board, in order to determine whether the oven is suitable for the treatment of Canadian lignites. A large-scale test of Canadian lignite was so satisfactory that the board has decided to erect a Bureau of Mines oven at its experimental plant at Bienfait, Saskatchewan. CONDENSATION LOSSES OF WATER GAS. By W. A. Dunkley. THE Central District Experiment Station of the Bureau of Mines at Urbana, Illinois, recently undertook a study of condensation losses due to the transmission of carburetted water gas * Communicated by the Director.
๐ SIMILAR VOLUMES