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tunnle kiln process of sponge iron
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tunnle kiln process of sponge iron

Feb 13, 2015 In the year 1908 use of tunnel kiln started for iron oxide reduction. This process was invented by Sieurin as Hoganas process . In 1954, more kilns came into operation in Sweden and USA. Presently it is more popular in China for sponge iron production from beneficiated cake of iron ore fines.kiln charge temperature iron sponge iron Prior art date 1930-06-30 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US465036A Inventor Kenneth M Simpson3.3.3.1 Direct Reduced Iron. DRI, also known as sponge iron, is the product of reducing iron oxide in the form of iron ore and steel plant wastes into metallic iron, below the melting point of iron and typically in the range of 8001200 C. Iron oxide is charged into shaft furnace, rotary kiln, or fluidized beds in the form of pellet, iron ore lumps, or fines.

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