[Coggeshall, William Turner], 1824-1867, [from old catalog] ed · Columbus, Follett, Foster and company · leaf 392
ing in the blast furnace is now almostuniversally adopted for the reduction of iron ores, and for thecheapness and working qualities of the metal produced, aswell as for the rapidity of the manufacture, it is decidedlysuperior to all others. Ores which contain much carbonic acid, water, or… … 1 ^^ -^ A^\^>^^ J ^ JP ml Fia 3. Iron—Manufacture. 337 The calcination is sometimes effected in the open air, by stack-ing the ore with coal, setting fire to it, and allowing it toburn out; but this method is liable to serious objection. Itis impossible to keep the temperature uniform throughout…
Printing · Pottery · Gas, Illuminating · Iron industry and trade · Glass manufacture
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