from The Century Dictionary and Cyclopedia
- n. A kind of reverberatory furnace in which iron is puddled. See puddling, 2 , and cut in next column.
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These rolls, when they are driven by steam, obtain this generally from a boiler placed over the heating-or puddling-furnace, and heated by the waste gases from the furnace.
The coal is burned on the grate of the puddling-furnace, to carbonic acid, and the flame is more fully utilized than in an ordinary puddling-furnace, for besides the ordinary hearth there is the second or rear hearth, where additional heat is taken up, and then the products of combustion are further utilized in heating the retorts in which the ore is partly reduced.
The blast-furnace and the puddling-furnace, the loup-lump at the bottom of the melt at last, the rolling-mill, the stumpy bars of pig-iron, the strong clean-shaped Trail for railroads,
Among the other important results of Mr. Mushet's lifelong labours, the following may be summarily mentioned: The preparation of steel from bar-iron by a direct process, combining the iron with carbon; the discovery of the beneficial effects of oxide of manganese on iron and steel; the use of oxides of iron in the puddling-furnace in various modes of appliance; the production of pig-iron from the blast-furnace, suitable for puddling, without the intervention of the refinery; and the application of the hot blast to anthracite coal in iron-smelting.
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