Conveners
Underground and Open Pit Uranium Mining and Milling
- Christian Polak (AREVA MINES)
- Mark Mihalasky (U.S. Geological Survey)
Underground and Open Pit Uranium Mining and Milling
- Luminita Grancea (OECD NEA)
- Ziying Li (Beijing Research Institute of Uranium geology)
Dr
SREENIVAS T.
(Bhabha Atomic Research Centre)
26/06/2018, 16:00
Track 6. Underground and open pit uranium mining and milling
ORAL
COMPREHENSIVE EXTRACTION SCHEME FOR MULTI-METAL RECOVERY FROM METASOMATITE-ALBITITE HOSTED LOW-GRADE INDIAN U ORE
INTRODUCTION
India is making focused efforts to reach human development index (HDI) of 0.9+, a number considered to indicate decent state of living, from its present index value of 0.6 by 2040 [1]. Meeting the projected HDI necessitates amongst others, the strategies for...
Mr
David Princep
(Paladin Energy Ltd)
26/06/2018, 16:20
Track 6. Underground and open pit uranium mining and milling
ORAL
The Langer Heinrich mine resource definition work was based around radiometric logging of drill holes and this has been carried through to mining grade control. The resource model is an MIK estimation with a variance adjustment based on expected mining parameters. Due to the large block size of 50mx50m, infill to 12.5mx12.5m to allow for detailed mine planning is undertaken. This intermediate...
Mr
Wenming DONG
(CGN Uranium Resources Co Ltd)
26/06/2018, 16:40
Track 6. Underground and open pit uranium mining and milling
ORAL
The Husab mine is situated within the Namib Desert in the Erongo region of western-central Namibia, only 6km south of the Rossing mine owned by Rio Tinto, approximately 60km east of the coast town of Swakopmund and less than 100km northeast from the Walvis Bay Port, the largest deep water port in the southwestern Africa and thus it has convenient traffic conditions and extremely favorable...
Mr
Robert Bowell
(SRK Consulting (UK))
26/06/2018, 17:00
Track 6. Underground and open pit uranium mining and milling
ORAL
GoviEx Uranium Inc (“GoviEx”) holds several contiguous mining and prospecting licences in Southern Zambia that are grouped as the Mutanga Project. The deposit comprises of shallow sandstone hosted uranium ore. The Mutanga Project contains a mineral resource of 96.2 million tonnes (“Mt”) of ore at an average grade of 283 ppm U3O8 containing 60.0 million pounds (“Mlb”) of U3O8 in six deposits...
Mr
Pingru Zhong
(Beijing Research Institute of Chemical Engineering and Metallurgy)
27/06/2018, 11:00
Track 6. Underground and open pit uranium mining and milling
ORAL
With the merits of low power, reagent and water consumptions and low operational cost, heap leaching of uranium ores has become the most widely used technological process for natural uanium production in China. Of the proved uranium reserves in China, hard-rock minerals of low uanium grade take a large proportion and these reserves are mainly located in southern China and suitable for heap...
Mr
C. K. Asnani
(Uranium Corporation of India)
27/06/2018, 11:20
Track 6. Underground and open pit uranium mining and milling
ORAL
INTRODUCTION
Geological investigations for uranium deposits initiated in India during 1949-50 have led to the discovery of a number of favourable geological basins in the country. First uranium deposit located at Jaduguda in Singhbhum Shear Zone in the eastern state of Jharkhand continued to attract investments in exploration and mining of uranium for over five decades. However, extensive...
Dr
Brett Moldovan
(IAEA)
27/06/2018, 11:40
Track 6. Underground and open pit uranium mining and milling
ORAL
Colloidal silica generated in the leaching process by contacting clays and concrete with sulphuric acid has caused operational problems in solvent extraction (SX) at Cameco’s Key Lake uranium mill throughout its history. This colloidal silica stabilizes aqueous continuous emulsions in SX, resulting in increased solvent losses and operational downtime. Silica coagulation was investigated in...
Mr
Mark Maley
(ANSTO Minerals)
27/06/2018, 12:00
Track 6. Underground and open pit uranium mining and milling
ORAL
INTRODUCTION
While precipitation of sodium diuranate (SDU) has been practiced commercially from leach liquors since the 1950’s, there is very limited information on the impact of operating conditions on the efficiency of uranium precipitation from the “low-tenor’ liquors that are produced from the carbonate leaching of carnotite in calcrete ores.
ANSTO Minerals recently carried out a...
