Hydrometallurgical processing system with hydrostatic pressure assisted autoclaving

摘要

The hydrostatic pressure differential existing in a column of fluent material conveyed through an excavated passage possessing a downward entrance run and upward return run facilitates hydrometallugical processing including metals recovery and treatment of ores. Conveyance of the fluent material through the passage is facilitated by appropriate means including a difference in elevation between the inlet and outlet and/or gaseous expansion applied proximate the bottom of the return run. Cooling of effluent proximate the outlet may be utilized consequent to application of heat during processing as in roasting ore. The passage is excavated through rock fully capable of containing the pressures anticipated and has an interior casing which seals the rock porosity. Iron reinforced concrete is recommended in appropriate wall thicknesses. Location of appropriate pipe lines for pressurized fluid additives including compressed gas and liquid chemical reagents and the location of electrical lines if utilized within this interior casing is also recommended. Continuous operation autoclaving of hydrometallurgical processes in a safe and economical manner is facilitated.