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 & 34;forced& 34; or supplied above atmospheric pressure.. In a blast furnace, fuel , ores, and flux are continuously supplied through the top of the furnace, while a hot blast of air sometimes with ...
Blast furnaces are used continuously and are only shut down when their brick lining needs replacing. As the mixture of iron ore, coke and limestone heats, the hot waste gases are collected and cleansed. They are then used to help heat the air blast, required if blast furnace is to reach the high temperatures needed to produce molten iron. Videos 03:16 Blast Furnace Pig Iron Production YouTube 2016-05-10T04:12:34Z10:22 Blast Furnace: The Making of Iron with Animations and Diagrams YouTube 2017-03-20T18:50:39Z03:47 Blast Furnace - Iron Making snippet from Steel Manufacturing YouTube 2018-09-04T11:07:26Z02:27 Iron Ore Metalloinvest’s Products YouTube 2018-03-29T08:00:00Z04:10 Iron and Steel Production YouTube 2011-12-06T07:47:45Z00:32 Coke Production For Blast Furnace Iron Steel Making, Tata Plant Jamshedpur YouTube 2018-10-07T08:00:00Z10:16 How a Blast Furnace works YouTube 2015-06-22T02:42:11Z01:25 Iron ore for Blast Furnace and Steel Production YouTube 2019-07-14T14:02:35Z06:28 Science Activities: Learn about Blast Furnace iKen iKen Edu iKen App YouTube 2012-10-31T06:01:21Z06:35 Iron and Steel YouTube 2011-10-27T20:53:27Z More results in videos
More than 1.1 billion tonnes of blast furnace iron was produced globally in 2016. Blast furnace economics are such that larger units have lower unit production costs, hence there has been a trend to bigger and bigger furnaces. Modern blast furnaces produce more than 10,000 tonnes per day. For general information about merchant pig iron, please ...
Ironmaking Blast Furnace. 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.
The production of iron from its ore involves an oxidation-reduction reaction carried out in a blast furnace. Iron ore is usually a mixture of iron and vast quantities of impurities such as sand and clay referred to as gangue. The iron found in iron ores are found in the form of iron oxides.
The production of iron in a Blast Furnace is a continuous process. The furnace is heated constantly and is re-charged with materials from the top while it is being tapped from the bottom. Iron making in the furnace usually continues for about ten years before the furnace linings have to be renewed.
In a Corex process, the blast furnace concept is used but the blast furnace is virtually split into two halves at the cohesive zone interface Fig 3 . The process has three stages. The first stage of the process takes place in the reduction shaft, where iron ore burden is reduced by gases emanating from the melter-gasifier and is converted to hot DRI.