Publisher's Synopsis
Excerpt from North of England Institute of Mining Engineers Transactions, 1864-5, Vol. 14
The construction and size of the blast furnaces will be best understood by a reference to the drawings (plate No. 1 furnace is one of the smaller, and No. 2 one of the larger furnaces used for smelting with charcoal. The waste gases from the blast furnaces are utilized by heating the blast before entering the furnace; an apparatus for this purpose is shown attached to No. 1 furnace.
In blowing a furnace in blast it requires 2000 bushels of charcoal to heat the furnace sufficiently for the introduction of the ore. The various descriptions of ore are put into the furnace in certain proportions when the separation can be effected. The open hematite and the oxides being easily fused, while the compact hematite and the specular ores are refractory.
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