Process for producing pig iron or liquid primary steel products
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United States of America Patent
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Apr 14, 2015
Grant Date -
Feb 14, 2013
app pub date -
Apr 12, 2011
filing date -
Apr 26, 2010
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Abstract
A process for producing pig iron or liquid primary steel products is provided. Charge materials containing iron ore and, if appropriate, additions are reduced in at least one reduction unit by means of a reducing gas, and at least parts thereof are smelted in a smelting unit, with coal being added and with formation of the reducing gas. Reducing gas from the smelting unit and/or top gas from the reduction unit are/is subjected to cleaning. The process water obtained during the wet cleaning is degassed and in the process volatile organic compounds are removed from the process water.
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