Blast-Furnace Gas

blast-furnace gas

[′blast ‚fər·nəs ‚gas]
(materials)
The gas product from iron ore smelting when hot air passes over coke in blast ovens; contains carbon dioxide, carbon monoxide, hydrogen, and nitrogen and is used as fuel gas.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Blast-Furnace Gas

 

(top gas), the waste gas from blast furnaces; mainly the products of the incomplete combustion of carbon. Its chemical composition during the smelting of cast iron on coal coke is 12–20 percent carbon dioxide, 20–30 percent carbon monoxide, up to 0.5 percent methane, 1–4 percent hydrogen, and 55–58 percent nitrogen. Blast-furnace gas is utilized as a fuel in metallurgical works. The heat of combustion of blast-furnace gas is approximately 3.6–4.6 megajoules per cu m (850–1,100 kcal per cu m). When the blast is enriched with oxygen, the nitrogen content of the gas is lowered and the amount of other gases (including carbon monoxide and hydrogen), as well as the heat of combustion, increases correspondingly.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The dew point of flue gas generated by the coke oven gas is the highest, followed by natural gas, fuel oil, blast-furnace gas and coal.
The GTCC plants on order will use by-product gases from furnaces - specifically, FINEX gas, blast-furnace gas and coke-oven gas - as fuel.
Higley and his group are currently investigating the feasibility of capturing excess blast-furnace gas at several mills and converting that to process steam to run turbines.