Wrought iron is the purest form of iron available commercially available and is prepared from cast iron by heating cast iron in a furnace lined with Haematite . The Haematite reacts with Carbon in the cast iron to give pure iron and carbon monoxide gas which escapes. Limestone is then added as flux, and it creates the slag.
The pre revolution iron industry was based on small, localized production facilities sited near essential ingredients such as water, limestone, and charcoal. This produced multiple small monopolies on production and a set of small iron producing areas like South Wales.
In HIsarna ironmaking process, iron ore is processed almost directly into liquid iron or hot metal.The process is based around a type of blast furnace called a cyclone converter furnace, which makes it possible to skip the process of manufacturing pig iron pellets that is necessary for the basic oxygen steelmaking process.
Refractory Ore with a high aluminium oxide would be suitable for the manufacture of refractoriness. Chemical Low grade chromites, that are those with high iron content, are mainly used for the manufacture of dichromatic needed for the electroplating and tanning industry Table 2.
MANUFACTURE OF IRON: PIG IRON AND CAST IRON. The manufacture of iron is based on the principle of reduction of iron oxide with carbon monoxide.
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The early application of iron to the manufacture of tools and weapons was possible because of the wide distribution of iron ores and the ease with which iron compounds in the ores could be reduced by carbon. For a long time, charcoal was the form of carbon used in the reduction process.
The iron ore is first roasted in air to produce iron oxide which is mixed with coke and limestone and then further heated to a very high temperature in a blast furnace. These materials are loaded into the blast furnace from the top while a blast of hot air is introduced into it from beneath via small pipes known as tuyeres.