. Transactions. ^ J ^ ^ , ^ ^ - »t/4rrt-»Ui ^.„„ ? ~ —1 r- ^— __ _ \/3eo — r— ^r^\f^^^^ Omo L OS 6 9 /2 /S /S 2/ 24 Z7 3a 33 M S9 ?^r AS ^ S/ ^4 S7 te Srays £7a/Sl^st- /^//Vi-ryj Fig. 3.—Test 2. Curves showing Difference in Temperature between Pointsin Hot-Blast Main, G Furnace, while Stove was on Blast, Nov. 6, 1913. Pyrometer A, between stove No. 5 and hot-blast valve. Pyrometer B, at junction of main and bustle a A 3 /2 /£ ^o Z* 26 32 Se 4j3 4^ 48 SZ Fig. 4.—Test 3. Curves showing Difference in Temperature between PointsIN Hot-Blast Main, G Furnace, while Stove was on Blast, Nov. 10,
. Transactions. ^ J ^ ^ , ^ ^ - »t/4rrt-»Ui ^.„„ ? ~ —1 r- ^— __ _ \/3eo — r— ^r^\f^^^^ Omo L OS 6 9 /2 /S /S 2/ 24 Z7 3a 33 M S9 ?^r AS ^ S/ ^4 S7 te Srays £7a/Sl^st- /^//Vi-ryj Fig. 3.—Test 2. Curves showing Difference in Temperature between Pointsin Hot-Blast Main, G Furnace, while Stove was on Blast, Nov. 6, 1913. Pyrometer A, between stove No. 5 and hot-blast valve. Pyrometer B, at junction of main and bustle a A 3 /2 /£ ^o Z* 26 32 Se 4j3 4^ 48 SZ Fig. 4.—Test 3. Curves showing Difference in Temperature between PointsIN Hot-Blast Main, G Furnace, while Stove was on Blast, Nov. 10, 1913. Pyrometer A, between stove No. 5 and hot-blast valve. Pyrometer B, at junction of main and bustle pipe. 376 TEMPERATURE DROP IN BLAST-FURNACE HOT-BLAST MAINS low readings orpyrometer B due to leakage of the cold-blast direct and indirect information leads me to believe it unlikely thatappreciable error has occurred due to any of these causes. The accompanying diagrams and tables, selected from a number, showtypical conditions for the two furnaces in question. Tests were notmade on other furnaces, because of the objectionable feature of breakingout brick work in the hot-blast main, with resulting danger of hot spots. Unfortunately, no tests were made on comparatively low blast account of smelting hard, lumpy ores, we usually carry high blasttemperatures at Bethlehem, and generally ope
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
