Patent ID: 8985902
Filing Date: 2015-03-24
Classification: B09B,B09C,C09K,E21B,E21F

Abstract:
1. A system for treating materials produced from an excavation activity, comprising: a. a collection of at least one of waste rock or tailings materials; b. a distribution network in fluid communication with said collection of at least one of waste rock or tailings materials; c. a foaming agent supplied through said distribution network to said collection of at least one of waste rock or tailings materials; d. a reagent supplied through said distribution network to mix with said foaming agent to form a reagent-foam mixture, wherein said reagent is selected to react with at least one of sulfides or bacteria in said collection of at least one of waste rock or tailings materials to reduce acid rock drainage from said collection of at least one of waste rock or tailings materials; and e. wherein said reagent comprises at least one of limestone, dolomite, sodium bicarbonate, steel slag, fly ash, or sodium hydroxide.