Two-stage uranium in situ leaching process
Patent
·
OSTI ID:6270261
A two-stage in situ uranium leaching process is described wherein h2so4/oxidant is used as the principal leaching solution. Prior to leaching, the formation is treated with a dilute solution of hydrochloric acid, carbonic acid, or other acid (without oxidant) capable of removing the most accessible portions of CaCO/sub 3/. The pretreatment improves the permeability of the formation and precludes plugging with caso4. The invention is particularly advantageous when applied to ores which cannot readily be leached with alkaline solutions.
- Assignee:
- Mobil Corp
- Patent Number(s):
- US 4376098
- OSTI ID:
- 6270261
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
050400* -- Nuclear Fuels-- Feed Processing
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
ACTINIDES
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CALCIUM SULFATES
CARBON COMPOUNDS
CARBONATES
DISSOLUTION
ELEMENTS
HYDROGEN COMPOUNDS
IN-SITU PROCESSING
INORGANIC ACIDS
LEACHING
METALS
OXIDIZERS
OXYGEN COMPOUNDS
PERMEABILITY
PLUGGING
PROCESSING
SEPARATION PROCESSES
SULFATES
SULFUR COMPOUNDS
SULFURIC ACID
URANIUM
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
ACTINIDES
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CALCIUM SULFATES
CARBON COMPOUNDS
CARBONATES
DISSOLUTION
ELEMENTS
HYDROGEN COMPOUNDS
IN-SITU PROCESSING
INORGANIC ACIDS
LEACHING
METALS
OXIDIZERS
OXYGEN COMPOUNDS
PERMEABILITY
PLUGGING
PROCESSING
SEPARATION PROCESSES
SULFATES
SULFUR COMPOUNDS
SULFURIC ACID
URANIUM