Forsys Announces Up to 92% Recoveries from Heap Leach Laboratory Tests and Commencement of Optimization Study
10 Agosto 2011 - 8:30AM
Marketwired
Forsys Metals Corp. (TSX: FSY)(FRANKFURT: F2T)(NSX: FSY) ("Forsys"
or the "Company") is pleased to announce positive uranium leaching
results from laboratory tests to determine whether ore from its
fully licensed Valencia Uranium Project could be economically
recovered by heap leaching. The test program focused on the uranium
recovery and reagent consumptions that are commercially achievable,
and generating data to guide future development work by a heap
leach process route.
Mintek of Johannesburg, South Africa, which was appointed as the
laboratory facility to conduct the initial column leach test
program, concluded that:
-- Ore from the Valencia Uranium Project is amenable to heap leaching.
-- Good uranium extractions can be achieved under trickle-bed conditions.
-- Sufficient uranium liberation is attainable from conventional crushing.
Up to 92% uranium dissolution was obtained in the column leach
tests at a pH of about 0.7. Concurrently, 2 atmospheric batch leach
tests were carried out to provide comparative leach results to the
heap leach tests and determine any possible anomalies should they
exist. The atmospheric batch leach test results supported the
findings of the column leach results and no anomalies were found.
Simulus, a leading Perth based engineering group, has been
appointed to complete the recommended Phase 2 optimization
study.
Marcel Hilmer, Chief Executive Officer of Forsys, commented,
"Phase 1 results have confirmed our view of the benefits of heap
leaching and that it appears viable as the primary mineral
extraction method and may ultimately lead to reduced capital and
operating expenditures and overall improved economics at our
Namibian projects. We have commenced Phase 2 of laboratory testing
and hope to provide further positive results before year end."
Laboratory Testing and Results Summary
Two tonnes of ore sample were shipped to Mintek as part of the
first phase of test work. Comminution tests were carried out on the
samples received to determine crushing parameters to be used in the
production of sample material for the subsequent column leach
tests. Two different crushing methods were applied, namely high
pressure grinding row ("HPGR") and conventional jaw crushing. A
specific pressure of 4.5N/mm2 was applied in HPGR crushing to
produce a suitable size distribution. The tests were conducted in
columns with an internal diameter of 200mm and a height of 2.0
metres. Four column leach tests (two tests in duplicate) were
conducted on samples crushed to 100% -12.5mm by two different
methods, HPGR and jaw crushing.
The column leach tests from the jaw crush sample yielded a
maximum uranium extraction of 92%, while the HPGR test yielded 81%
uranium extraction. The final acid consumption ranged from 10 to
20kg/t for the 4 columns.
To view the "Uranium Extraction, 2m leach columns" graph, please
visit the following link:
http://media3.marketwire.com/docs/fsy_gr1_810.jpg
The figure above shows the uranium extraction versus time curves
for the jaw crush (conv crush A and B) and HPGR (HPGR A and B)
column leach tests.
The HPGR and jaw crush columns showed a maximum compaction of
7.2% and 3.4% respectively at 2.0 metres lift height, both falling
well within a safe range for heap leaching practice.
As a comparison with previous test methods, two atmospheric
batch leach tests were executed on fine-milled ore (P80 = 850um)
under oxidative leaching conditions within an acidified, iron
sulphate solution at 25 degrees C. The acidity was controlled
manually at pH 1.8 by addition of 98% sulphuric acid and the
solution potential was controlled by addition of MnO2. The two
tests show excellent repeatability with 80% of the uranium rapidly
dissolving after only 30 minutes, achieving greater than 92% after
24 hours of leaching.
About Forsys Metals Corp.
Forsys Metals Corp. is an emerging uranium producer with 100%
ownership in the fully permitted Valencia Uranium Project and 70%
ownership in the Namibplaas Uranium Project in Namibia, Africa a
politically stable and mining friendly jurisdiction. Current NI
43-101 compliant reserves at Valencia are 60.5 Mlbs of U3O8
supporting a 17-year mine life and current Measured and Indicated
resources are 75.5 Mlbs U3O8 with a further 8.4 Mlbs of Inferred
U3O8.
On behalf of the Board of Directors of Forsys Metals Corp.
Marcel Hilmer, Chief Executive Officer
For further information visit our website at
www.forsysmetals.com
Sedar Profile #00008536
Forward-Looking Information
This news release contains projections and forward-looking
information that involve various risks and uncertainties regarding
future events. Such forward-looking information can include without
limitation statements based on current expectations involving a
number of risks and uncertainties and are not guarantees of future
performance of the Company. The following are important factors
that could cause Forsys actual results to differ materially from
those expressed or implied by such forward looking statements:
fluctuations in uranium prices and currency exchange rates;
uncertainties relating to interpretation of drill results and the
geology; continuity and grade of mineral deposits; uncertainty of
estimates of capital and operating costs; recovery rates,
production estimates and estimated economic return; general market
conditions; the uncertainty of future profitability; and the
uncertainty of access to additional capital. Full description of
these risks can be found in Forsys Annual Information Form, dated
March 29, 2011, available on the Company's profile on the SEDAR
website at www.sedar.com. These risks and uncertainties could cause
actual results and the Company's plans and objectives to differ
materially from those expressed in the forward-looking information.
Actual results and future events could differ materially from
anticipated in such information. These and all subsequent written
and oral forward looking information are based on estimates and
opinions of management on the dates they are made and expressed
qualified in their entirety by this notice. The Company assumes no
obligation to update forward-looking information should
circumstances or management's estimates or opinions change.
Shares Outstanding: 80,130,231
The Toronto Stock Exchange has not reviewed and does not accept
responsibility for the adequacy or accuracy of this release.
Contacts: Forsys Metals Corp Marcel Hilmer Chief Executive
Officer +61 417 177 942 mhilmer@forsysmetals.com Forsys Metals Corp
Miranda Smith Investor Relations +1 647-258-9721
msmith@forsysmetals.com www.forsysmetals.com
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