Hydraulic and earth engineering – Subterranean waste disposal – containment – or treatment – With treatment of waste
Patent
1997-05-29
1999-12-21
Suchfield, George
Hydraulic and earth engineering
Subterranean waste disposal, containment, or treatment
With treatment of waste
210901, 588249, B09B 100
Patent
active
060040696
ABSTRACT:
A method for providing a composite capping cover for maintaining the surface of a sulphide bearing tailing and mine waste containing deposit moist thereby substantially eliminating oxidation of the sulphidic particulate in the deposit and the formation of heavy metal salts. The moisture is provided by atmospheric precipitation. The composite capping cover comprises a fine particulate layer, a fine-granular particulate layer and a coarse-granular particulate layer, the particle sizes of the particles making up the individual the layers having been selected such that the hydraulic conductivity of the layers increases with successive layers while the matric suction value within the layers decreases.
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"Current Status of the Sloped Thickened Tailing Disposal System" by E.I. Robinsky, Proc. Int. Conf. (1987) Bauxite Tailings, Kingston, Jamica, 1986 .
Falconbridge Limited
Suchfield George
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