METHOD FOR UNDERGROUND LIXIVIATION OF MINERAL RESOURCES Russian patent published in 2007 - IPC E21B43/28 

FIELD: technology for extracting mineral resources by means of underground lixiviation with usage of gaseous oxidizers.

SUBSTANCE: method includes feeding lixiviation solution and gaseous reagent from the surface through wells into productive level, dispersing reagent and mechanical suspensions in lixiviation suspension in acoustic field with intensiveness 1÷70×10⁴ Wt/m², lixiviation itself and recovery of productive solution. Dispersion and feeding into productive level of lixiviation solution is realized at hydrostatic pressure P_calc., determined from formula: P_calc.=Q_g/Q_a×P_a, where Q_g - required concentration of gaseous reagent in lixiviation solution, kg/m³; Q_a - amount of gaseous reagent being diluted in lixiviation solution at atmospheric pressure, kg/m³; P_a - atmospheric pressure.

EFFECT: increased lixiviation efficiency due to increased concentration of gaseous reagent in lixiviation solution while preventing effect of gas mudding of productive level and increasing quality of dispersion of mechanical suspensions to prevent mechanical mudding of filter-adjacent area of force wells.

3 cl, 1 dwg