a small blast furnace for smelting lead.
Origin of ore hearth
First recorded in 1815–25
Also called Scotch furnace, Scotch hearth.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for ore hearth
Lead ores are smelted in the reverberatory furnace, the ore-hearth, and the blast-furnace.