搅炼炉

冶

Puddling \Pud"dling\, n.
1. (Hydraul. Engin.)
(a) The process of working clay, loam, pulverized ore,
etc., with water, to render it compact, or impervious
to liquids; also, the process of rendering anything
impervious to liquids by means of puddled material.
(b) Puddle. See {Puddle}, n., 2.

2. (Metal.) The art or process of converting cast iron into
wrought iron or steel by subjecting it to intense heat and
frequent stirring in a reverberatory furnace in the
presence of oxidizing substances, by which it is freed
from a portion of its carbon and other impurities.

{Puddling furnace}, a reverberatory furnace in which cast
iron is converted into wrought iron or into steel by
puddling.