Uranium Mining by In-Situ Recovery (ISR) Technologynma.org/pdf/uranium/060409_in_situ.pdfUranium...
Transcript of Uranium Mining by In-Situ Recovery (ISR) Technologynma.org/pdf/uranium/060409_in_situ.pdfUranium...
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Uranium Miningby In-Situ Recovery (ISR)
Technology
A summary reviewprepared byBill Boberg
Ur-Energy Inc.Littleton, Colorado
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Uranium In-Situ Recovery (ISR) Mining
Low capital costs ($20 to $35 million)Environmentally friendly (common solute is
ground water enriched with oxygen and, ifneeded, carbon dioxide or bicarbonate of soda)
Process essentially reverses the natural processby which the deposits were originally formed
Works very good on solution front deposits inporous & permeable sandstones (Wyoming, Texas,Kazakhstan, Australia, etc.)
Ideally 14 – 24 months mining, 24+ monthsground water restoration and surfacereclamation
Production cost range - $18 to $25 per pound
Prepared by Bill Boberg, Ur-Energy, Inc. 2006
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ISR Mine Production Schematic
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Basic ISR Process - Satellite
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ISR Wellfield Layout
Wellfield cross sectionIn following slide
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ISR Mining – Injection and Production Wells
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Drilling to Install WellfieldView at Christensen Ranch ISR Mine (Cogema/AREVA)
Powder River Basin, Wyoming
Photo by Tom Nicholson
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ISR Wellfield Smith Ranch Mine (PRI/Cameco)Powder River Basin, Wyoming
Photo by Bill Boberg – July 2005
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ISR Mining – A Plumbers World
A production welland insulating cover
Header House, controllingboth injection as well asproduction from many wellsin wellfield
Photos by Bill Boberg, Taken at PRI/CamecoSmith Ranch ISL Mine, Powder River BasinWyoming – July 2005
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Basic ISR Plant Processing
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From the ISR Wellfield to the Plant
From the production well theproduced fluid goes through resintanks where the uranium isstripped from the fluid and is thenreturned to the wellfield
The resin is then transported to themill where it is stripped and theuranium is taken into solutionPhotos by Bill Boberg, Taken at PRI/CamecoSmith Ranch ISL Mine, Powder River BasinWyoming – July 2005
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From Solution to Yellowcake
After stripping from the resin, theuranium is taken through severalsteps in solution before beingprecipitated and dried
The final step in the mill is topackage the dry yellowcakein drums
Photos by Bill Boberg, Taken at PRI/CamecoSmith Ranch ISL Mine, Powder River BasinWyoming – July 2005
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Yellowcake – The Product
Yellowcakeuranium oxide (U3O8)800+ pounds per drumUS$80,000 per drum @ $100/lb
Filled drums of yellowcake awaitingshipment at Smith Ranch
Photos by Bill Boberg, Taken at PRI/CamecoSmith Ranch ISL Mine, Powder River BasinWyoming – July 2005
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ISR MiningGround Water Restoration