Industrial Report on Lead, Zinc and Iron, Together with Notes on Shannon County and Its Copper Deposits

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Regan & Carter, printers, 1877 - Copper ores - 183 pages
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Page 141 - they were in large flocks containing both species in the proportion of two of the former to one of the latter " (the present)
Page 2 - Resolved, that the sum of fifteen hundred dollars be, and the same is hereby appropriated as compensation for the 'use of sulphuric ether in the hospital under our charge, and the same be taken from the unexpended appropriation of Bellevue Hospital.
Page 127 - The blowing apparatus is worked by water-power, furnished by the ample spring at the works. The diameter of the blower is 4 ft. ; stroke 4 ft. 6 in. ; two cylinders ; number of revolutions per minute, 16. The calculated capacity of the apparatus is 3,612 cubic feet of air per minute ; or, with an average daily production of fourteen tons iron, one ton of iron requires 13.86 tons of air.
Page 128 - The charcoal contains, 8.66 per cent, ash ; 497 hygroscopic water, and 86.37 carbon. Estimating the weight per bushel to be at the rate of eighteen pounds, 1.221 tons charcoal are required per ton of pig iron, <or 1.053 ton of pure carbon to the tori of iron.
Page 92 - ... it will be found that plenty of lead is produced in Great Britain and elsewhere, quite as suitable for conversion into white lead as that bearing the mark 'WB selected and refined.
Page 148 - If these words have to be taken in their literal sense of comparative susceptibility to fusion, their use, in my opinion, may lead to error. There are, no doubt, some differences in the melting points of different kinds of iron and slag, but these, I apprehend, are trifling and cannot account for the marked alterations, just spoken of, in the quantity of fuel required for mere liquefaction. The actual cause of the lesser quantity of consumption...
Page 17 - Chauvenet's analysis of ore from these diggings shows: (loc. oit. page 388,) lead, 84.06; zinc, 0.94; iron, 0.16; antimony, none ; silver, 0039 [=1^ oz. per ton of 2000 Ibs. ore] ; silicious matters, 0.61 per cent. The lead corresponds to 97.05 per cent, .galenite, and the zinc, to 1.41 per cent, sphalerite...
Page 134 - Ibs. each) at each heat, without any reheating. Eighty bushels of charcoal are required per ton (2,464 pounds) of bloom produced. Each fire requires two hands, and makes only one turn per day. The power for the blowing engine is furnished by the spring. There are two vertical cylinders, 6 feet 2 inches in diameter; length of stroke, 4 feet; number of revolutions, 14 per minute.
Page 134 - The tuyere enters the fire about 14- inches; its diameter is 1 inches; the bottom plates are not cooled, but rest on the ground, and last from one to three months. A charge is 280 pounds of pig iron, 2-5 being white or mottled iron and 3-5 gray iron. A charge gives a loop of 246 pounds, which is hammered into two blooms (120 Ibs.
Page 127 - R. 6 W., Sees. 1 and 2), owned by the heirs of Thomas James, and operated under the management of William James, Esq., of St. James, is the oldest establishment now in operation in the State. Smelting work was begun at the location as early as 1824. The present furnace is of...

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