CPC B09B 3/80 (2022.01) [B09B 1/008 (2013.01); E21F 15/005 (2013.01)] | 18 Claims |
1. A method for processing mine waste, the method comprising:
receiving a mine waste including one or more heavy metals, a first heavy metal leachability, and a first sulfide concentration, wherein the mine waste, when exposed to air or water, forms acid mine drainage that includes at least some of the one or more heavy metals; and
treating the mine waste to produce a product having a pH less than 7.5, wherein the product is configured to fill a mine and includes (i) a second heavy metal leachability less than the first heavy metal leachability, (ii) a second sulfide concentration less than the first sulfide concentration, and (iii) an entirety of the one or more heavy metals of the received mine waste, and wherein the product, when exposed to water or oxygen, does not form acid mine drainage.
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