The Collaborative International Dictionary
Almond furnace
Almond furnace \Al"mond fur`nace\ [Prob. a corruption of Almain
furnace, i. e., German furnace. See Almain.]
A kind of furnace used in refining, to separate the metal
from cinders and other foreign matter.
--Chambers.
Wiktionary
almond furnace
n. A kind of furnace used in refine, to separate the metal from cinders and other foreign matter.