Controlled percolation method for heap leach mining

Details Controlled percolation method for heap leach mining Controlled percolation method for heap leach mining

1991-01-28

1991-07-09

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

266101, C22B 301

Patent

active

050302795

ABSTRACT:
A system for heap leach mining comprises supply and header pipes for conducting leaching solution alongside a bed or "heap" of crushed metal-laden ore deposited on an impervious pad. A series of spaced tubes are connected to the supply header pipes to extend transversely thereof, over the pad, to receive the leaching solution therefrom. A plurality of emitters are connected in spaced relationship along each of the tubes for emitting the leaching solution at a controlled and substantially uniform rate over the pad and into the ore bed. The tubes and emitters can be positioned either on an upper surface of the ore bed or buried beneath such surface, at a predetermined depth. The system and method of this invention provide numerous advantages over conventional surface spraying systems and methods, including substantial cost savings thereover.

REFERENCES:
patent: 4473532 (1984-09-01), Rose
patent: 4739973 (1988-04-01), Herndon

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