Method for processing steel slag and hydraulic mineral binder
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United States of America Patent
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Jul 7, 2020
Grant Date -
Apr 21, 2016
app pub date -
Sep 1, 2014
filing date -
Sep 2, 2013
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Abstract
The invention relates to a method for processing steel slag to produce a hydraulic mineral binder with a high hardening potential and to recover iron. There is provision for this purpose to provide a feed product comprising steel slag with MnO. This feed product is further processed as a melt by introducing reducing agents into the melt. A lime saturation factor of between 90 and 110 is hereby to be achieved in the mineral melt portion. Subsequently the melt is cooled in a defined manner and elemental iron is mechanically separated from the solidified melt. The solidified melt is then supplied for use as hydraulic mineral binder.
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