Transactions . ds when forked cokewas working on the furnace, the iron was invariably hotter andthe silicon higher, and that the forked coke would carry from300 to 400 pounds more burden per charge than the bunker-coke. Every barrow of coke was weighed, except during periodsof heavy or long-continued rains. The Dover plant consists of one stack 75 feet high, 16 feet6 inches in diameter of bosh, 10 feet 6 inches in diameter ofhearth and 12 feet 6 inches in diameter at stock-line. (Forother dimensions, see Fig. 1.) There are three Cowper hot-blast stoves with Roberts brick, 65 feet high by 16 fe
Transactions . ds when forked cokewas working on the furnace, the iron was invariably hotter andthe silicon higher, and that the forked coke would carry from300 to 400 pounds more burden per charge than the bunker-coke. Every barrow of coke was weighed, except during periodsof heavy or long-continued rains. The Dover plant consists of one stack 75 feet high, 16 feet6 inches in diameter of bosh, 10 feet 6 inches in diameter ofhearth and 12 feet 6 inches in diameter at stock-line. (Forother dimensions, see Fig. 1.) There are three Cowper hot-blast stoves with Roberts brick, 65 feet high by 16 feet indiameter; six 150-H. P. Stirling water-tube boilers in three * I have since learned that a similar device is used at the Carrie furnace nearPittsburgh, though with somewhat different arrangement, the branches at the topbeing horizontal and the down-comer vertical. At the Dover furnace, both areinclined, and the great accumulation of dust which must take place in the hori-zontal branches is avoided. Fig. Furnace Ltvtl Elevation Dover Furnace. 480 NOTES ON SIX MONTHS WORKING OF DOVER FURNACE. batteries; two old double return-flue boilers (used exclusivelyfor the pumps); one new improved vertical Allis blowing-engine, 42 inches by 84 inches by 60 inches, with Reynoldspositive-closing discharge-valves; and one old Weimer blowing-engine (out of use for extensive repairs and remodeling), 42inches by 84 inches by 48 inches. During the entire period treated of in these notes the fur-nace was blown with the Allis engine alone, with a maximumspeed of 45 revolutions per minute, giving a piston-delivery of17,268 cubic feet. (It may be needless to say that the Allisengine was run at its maximum speed constantly.) The fuel was standard Connellsville coke and was through-out of uniformly good character. Average of Eighteen Analyses of Coke. Per cent. Volatile matter, Ash, Carbon, 83-12 Silica, 4-43 Alumina, »2 Sulphur, °-71 The limestone was of a quality which could n
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
