METHOD FOR PRODUCING A BINDER FOR THE CONDITIONING OF SLUDGES, SOILS CONTAINING WATER AND FOR THE NEUTRALIZATION OF ACIDS
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United States of America
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Feb 6, 2020
app pub date -
Jan 24, 2018
filing date -
Jan 24, 2018
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Abstract
The invention relates to a method for producing a binder from slag for conditioning sludges/dredged material, soils containing water and for the neutralization of acids. According to the invention, the slag from a waste incinerator is crushed, then metal is removed and the crushed slag is graded into a fraction greater than 2.0-3.0 mm and a fraction smaller than 2.0-3.0 mm, the fraction 0/2.0-0/3.0 mm is dried in a dryer to a terminal humidity less than 1.5 wt. %-2.5 wt. %, as a result of which the pozzolanic properties of the slag are reactivated, the yield from the dryer is further crushed in a high-speed impact mill to a stable cubic grain structure and the metal released in this process is removed, and the 0/500-0/750 μm fraction forming the binder is separated from this crushed slag.
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