Search results
A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally pig iron, but also others such as lead or copper. Blast refers to the combustion air being supplied above atmospheric pressure. [1]
blast furnace, a vertical shaft furnace that produces liquid metals by the reaction of a flow of air introduced under pressure into the bottom of the furnace with a mixture of metallic ore, coke, and flux fed into the top.
A blast furnace is a special type of cylindrical furnace, which is basically used for the purpose of smelting. So, the industrial metals can be extracted from their ores like iron, pig iron, or copper.
A blast furnace is a counter-current gas-solid reactor where the ascending gas reacts with the descending solid bed, producing hot metal as the main product.
Jun 21, 2018 · The individual chemical processes in the blast furnace are described in more detail in the following sections. To generate the necessary heat and the reducing carbon monoxide gas (\(CO\)), the coke is burnt in the lower part of the blast furnace with the supply of the hot-blast. The carbon (\(C\)) contained in the coke initially reacts with the ...
blast furnace, Vertical shaft furnace that produces liquid metals by the reaction of air introduced under pressure into the bottom of the furnace with a mixture of metallic ore, fuel, and flux fed into the top.
Oct 6, 2023 · Blast furnace ironmaking is a continuous metallurgical process in which iron ore is reduced to liquid pig iron in a blast furnace. It is developed and improved from the ancient shaft furnace ironmaking. In China, the blast furnace is named for its vertical tubular shape and slender furnace body.
Basically, the blast furnace is a countercurrent heat and oxygen exchanger in which rising combustion gas loses most of its heat on the way up, leaving the furnace at a temperature of about 200° C (390° F), while descending iron oxides are wholly converted to metallic iron.
Modern furnaces are highly efficient, including Cowper stoves to pre-heat the blast air and employ recovery systems to extract the heat from the hot gases exiting the furnace. Competition in industry drives higher production rates.
Oct 10, 2017 · Iron is made by reacting iron ore (iron oxide and impurities), coke (a reductant) and limestone (CaCO 3) in a blast furnace. Iron ores with lower iron content such as taconite are first processed to concentrate the iron level and drive off volatile impurities.
