File:Transactions (1871) (14768042735).jpg

Identifier: transactionsmining35amer (find matches)
Title: Transactions
Year: 1871 (1870s)
Authors: American Institute of Mining, Metallurgical, and Petroleum Engineers
Subjects: Mineral industries
Publisher: New York (etc.)
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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skip-loadinto a different section of the hopper. For instance, the coke-eharge may be sent up in four skips and deposited in four equi-distant parts of the hopper, thus making, owing to the widedischarge-nozzle, a complete ring of coke in the hopper. Afterthe coke has been lowered into the furnace, the ore and lime-stone are sent up in the next four skips, thus making a com-plete ring of ore and limestone in the hopper. Now to makethis arrangement even better than hand-filling, this hopper,instead of moving just 90 deg. between skip-loads, is moved,say, 4 deg. more, so that the material of one charge is dumpedin a slightly different place from the same material in the pre-ceding charge. Thus, if 8 skip-loads make a complete charge,the first ore of one charge will be dumped at a point 32 deg.from that of the first ore of the preceding charge, and so on.It is this feature of the distribution which makes the apparatusvaluable. 570 MECHANICAL CHARGING OF THE MODERN BLAST-FURNACE. Derrick
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SIDE ELEVATIONA Distributor and a Double Skip. mkcii \\h\i. OHABQING 01 IHI MODIRH BLA8T-FURNAOI, 571 The breakage of coke or ore is relatively small; for the hop-per-chute la kepi as close to the main bopper a- possible, and tliis distance may be cut down to less than 1 ft. rriiis charger was patented before the mechanical filling fblast-furnaces became tin- general practice; and tin- furnamanagers of that day, while recognizing almost universally thetheoretical value t Browns invention, thought ii Involved toomuch mechanism tor a blast-furnace; ami tin- double bell, byvirtue t its simplicity, became the most common type Now,however, the serious detects of the double-bell charger havebeen demonstrated, while on the other hand Brown*.- devicehas been simplified. Fig. 10 shows its present form for tin-si ngle skip, with the douhle bell-rod. The whole of the gas-seal and distributor is on wheels, and can be jacked up andrun to one side when repairs must b

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