STACK FOR GROUP LIXIVIATION OF METALS FROM FROZEN ROCKS (VARIANTS) Russian patent published in 2005 - IPC

FIELD: mining industry.

SUBSTANCE: stack has bare metallic net in its base, used as deflector and/or lower electrode when letting current through stack, layer of roughly broken rocks with membrane inside for separating productive and used solutions, two autonomous draining devices in layer of rocks below and above the membrane, above the layer a fiber is placed for protection from mudding, actual lixiviated rocks, system of perforated pipes for feeding working solutions into stack or its certain portions and additional elements on upper surface of stack, mainly for protection thereof from freezing, metallic net as upper electrode, heating cable in form of flat flexible coil, and heat-protective covers. Second variant is different, because stack has bottom and side walls of durable non-flammable materials, layer of roughly broken rocks with membrane of non-flammable material inside for separating productive and used solutions, two autonomous draining devices in layer of rocks above and below the membrane, above the layer fiber for protection from mudding is placed, actual lixiviated rocks, system of perforated pipes for feeding working solutions into stack or its certain portions and additional elements on upper surface of stack, mainly for protection from freezing, heating cable in form of flat flexible coil and heat-protective covers, that in conjunction provides for possible group lixiviation at any season of year.

EFFECT: higher efficiency.

2 cl, 4 dwg