Backfill, methods of making, and use thereof
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United States of America Patent
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Feb 21, 2017
Grant Date -
Aug 27, 2015
app pub date -
Apr 30, 2014
filing date -
Feb 24, 2014
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Abstract
A composition in the form of a backfill is described. The composition comprises one or more mine tailings present in an amount greater than 50% by weight of the composition, one or more cementitious binder materials present in an amount ranging from 0% to 12% by weight of the composition, attapulgite present in an amount ranging from 0.01% to 4.00% by weight of the composition, and water. The fines content (Fc) of the one or more mine tailings is greater than or equal to 3%. Although subject to many uses, in some embodiments, the composition is suitable for managing tailings to be stored above ground or underground. For example, in some embodiments, the composition is suitable for filling mined out areas.
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