Originally posted by growler1969
I was wrong re: drilling and it should have been trenching. Thanks for the correction. This is my bias re: resource companies and proving up resources. Just use to saying "drilling".
You quoted me on the 1Mtpa when later I also mentioned the 3Mtpa.
Further, my post suggested why I am more bullish on Tiris than Haggan.
Do you just scan my posts and try to pick a hole then run with it? How could you not see it was positive re: Tiris? I can guess. Your usual bias. I have an image of you frothing at the mouth and pounding the keyboard each time you respond to me. Makes me laugh. Thanks.
One question I have always wanted to ask: Has the Tiris flow sheet been implemented in other uranium plays? Maybe
@ggwill can provide an answer. He seems happy to respond to posts with research.
As pointed out, Tiris is unique. The uranium is locked in carnotite which is deposited between larger pieces of rock. All material is loose and no crushing is required. If you remove larger pieces of rock you end up getting higher concentration of uranium in a smaller mass. Its kind of a simple processes in which you separate materials based on size using screens. You can't do this with other projects where you need to crush solid rock.
'Beneficiation and upgrading
Simple washing and screening tests have yielded exceptional results. Wet screening at 75 µm resulted in the rejection of 80% by weight with the retention of 91% of the uranium into the screen undersize. This is within the duty range of modern commercial screening equipment. In further testwork splitting at even finer sizes, 89% by weight was rejected when splitting at 10 µm, while remarkably still retaining 86% of the uranium into the -10 µm fraction. The average concentration of the -10 µm product was 2,500 ppm U3O8. This represents a Page 4 of 10 sevenfold upgrade factor from the 334 ppm resource grade. Separations down to sizes such as this may be achievable using well-established processes such as hydrocyloning. A fivefold upgrade factor has been used in this Scoping Study. These exceptional results may be explained by the extremely fine size and ready liberation of the uranium mineral, carnotite, and the large difference in particle size distribution between the carnotite and the bulk of the host rock minerals.
Uranium Extraction
Following a series of encouraging small-scale preliminary tests, a standard leach test on -300 µm beneficiated material confirmed exceptional results, with 92% uranium extraction within 4 hours and 95% after 8 hours. This compares, for example, with the 92% extraction in 36 hours at Paladin’s Langer Heinrich Project. This result may also be explained by the very fine size of the carnotite and its high degree of liberation'.
http://www.auraenergy.com.au/assets/aee_tiris_(reguibat)_scoping_study.pdf
(20min delay)
