Steel-fur′nace.
A metallurgic furnace in which ore or iron is treated for the production or refining of steel.
Steel is produced from
bar-iron in furnaces in which the bars are built up with charcoal and heated.
See cementation-fur-Nace.
Other furnaces operate upon ore of certain kinds to produce steel directly.
Again, other furnaces operate upon steel of a certain quality which is broken up and heated in crucibles.
See
cast-steel.
Fig. 5745 is a furnace for melting and refining steel.
An open hearth
D of refractory material is inclosed in a metallic pan, which is supported and made adjustable vertically by means of screws
v v. The upper part of the fuel-chamber
j is provided with a slide, on which the fuel is deposited, and has a cover
q, made gas-tight by an annular space containing water or sand.
a is the fire-grate.
The furnace
B is reverberatory.
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Steel-refining furnace. |
In
Fig. 5746,
A is the fire-chamber,
C a crucible-chamber, from which the products of combustion pass to a second crucible-chamber
E Each chamber is provided with apertures at top, closed by plugs
I I The crucible-covers are also provided with plugs, the construction being such that the metal can be readily inspected during the process, and the crucibles removed from or placed in the furnace at any stage of the process without interrupting the operation.
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Steel-furnace. |