E/MJ : engineering and mining journal . 08, No. 7 the furnace had its regular charge of coke and ore,but when the coke was cut below 50 per cent of normal,it was found that the tuyeres became closed, coal dustwould lodge in the tuyere pipes, and a certain quantitywould find its way into the bustle pipe, causing troubleat any leaky joint, thus rendering conditions aroundthe furnace dangerous. At this time the joints be-tween the furnace jackets and the tuyeres were not astight as they should be, and there was considerableleakage of coal dust. Tuyeres of several designs weretried to avoid leakag
E/MJ : engineering and mining journal . 08, No. 7 the furnace had its regular charge of coke and ore,but when the coke was cut below 50 per cent of normal,it was found that the tuyeres became closed, coal dustwould lodge in the tuyere pipes, and a certain quantitywould find its way into the bustle pipe, causing troubleat any leaky joint, thus rendering conditions aroundthe furnace dangerous. At this time the joints be-tween the furnace jackets and the tuyeres were not astight as they should be, and there was considerableleakage of coal dust. Tuyeres of several designs weretried to avoid leakage, and the canvas sleeves on thebranch pipes were replaced with 5-in. standard pipes,having flexible joints. Improved results were obtainedin this way, and some of the arrangements used areillustrated in Fig. 2. Later on, the coal was introducedinto the blast by means of an ejector like that used byT. W. Cavers at the Tennessee Copper Co. During this stage of the experiments, the maintroubles were at the tuyeres, which required regular.
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectmineralindustries
