Forsys Announces Results of Positive Engineering Cost Study for Its Valencia Uranium Processing Plant
May 02 2013 - 6:00AM
Marketwired Canada
Forsys Metals Corp (TSX:FSY)(FRANKFURT:F2T)(NAMIBIAN:FSY) ("Forsys" or the
"Company") is pleased to announce the completion of an Engineering Cost Study
("ECS") on its planned Valencia process plant for the Company's consolidated
Norasa uranium project in Namibia. The ECS, which was completed by the Perth
office of leading engineering group, AMEC Australia Pty Ltd ("AMEC"), confirms
the Company's focus on optimizing the Norasa project's economics. Completion of
the ECS is a significant milestone on the path to completion of a NI 43-101
Feasibility Study, which is expected before the end of 2013.
Engineering Cost Study Highlights
-- Differential NPV estimates increased by US$348m(1) before tax.
-- Opex is significantly reduced from the adjusted 2010 engineering cost
study (in 2013 dollars).
-- Capex for the process plant is cost-effective at US$249.7m.
-- Leach residence time reduced significantly by 30%.
-- Increase in plant throughput from 8.7 Mt/a to 11.2 Mt/a.
-- An increase in average annual production from 3.3 Mlb to 4.2 Mlb U3O8.
-- Plant availability increased from 88% to 91%.
-- Plant block model greatly simplified.
Marcel Hilmer, Chief Executive Officer, commented, "We are very pleased to have
delivered a positive engineering cost study which highlights many positives for
the Norasa Uranium Project. It constitutes an important component for the
completion of a feasibility study, which is planned for release by year's end.
As a consequence of the positive study, we are now accelerating the drilling
programs at Valencia East and Valencia North with a strategy to release an
updated mineral resources statement in Q3 2013. In the near term, we will
appoint an engineering firm to complete the feasibility study, which will
incorporate the optimized processing plant."
The study reviewed the Snowden Group 2008 definitive feasibility study and 2010
engineering cost study that outlined some potentially attractive comminution
flowsheet changes and optimizations. The ECS details the results of these
investigations and studies and incorporates the recommended flowsheet changes
and optimizations into the revised and updated capital and operating costs for
the process plant component of the Norasa project.
The ECS will be available for download from www.forsysmetals.com.
Engineering Study - Key Metrics
AMEC completed a review of a number of alternative comminution circuits and
compared them to an Adjusted Base Case ("ABC"). The ABC used the existing
Snowden Group design; a 8.7 Mt/a, three-stage crushing and rod milling (3 off)
at a grind of P80 = 850 micrometre. Capital and operating Costs were adjusted to
reflect rate changes from 2010 to 2013 costs. Of the options considered, the
most beneficial in overall terms was the semi autogenous grinding (SAG) Mill.
The design is a two-stage crush plus single stage SAG mill using acidic filtrate
at a grind of P80 approx. 600 micrometre.
------------------------------
ABC SAG Mill(1)
----------------------------------------------------------------------------
Feed tonnage, Mt/a 8.7 11.2
----------------------------------------------------------------------------
Mill grade, g/ t U3O8 194 194
----------------------------------------------------------------------------
Overall U3O8 recovery 85% 85%
----------------------------------------------------------------------------
Annual production, Mlb U3O8 3.3 4.2
----------------------------------------------------------------------------
Operating cost, US$ Tonne $8.60 $7.68
----------------------------------------------------------------------------
Operating cost, US$ lb U3O8 $23.66 $21.11
----------------------------------------------------------------------------
Capital cost, US$ M $241.60 $249.70
----------------------------------------------------------------------------
Crushing Three-stage Two-stage
----------------------------------------------------------------------------
Milling 3 rod mills 1 SAG mill
----------------------------------------------------------------------------
U3O8 Price $/lb $70 $70
Total Revenue US$M/LoM $3,504 $4,487
Total Operating Costs US$M/LoM $2,109 $2,314
----------------------------------------------------------------------------
Differential NPV $M
(relative to ABC, 8% DR - before tax) $0 $348
----------------------------------------------------------------------------
1 - The revenue, total operating costs and differential NPV values were
generated by the Company using the capital costs and indicative operating costs
estimated in the ECS, in addition to other assumptions made by Forsys on items
excluded from this study, such as mining, external infrastructure, owner's
costs, etc. which will be reviewed and estimated as part of the feasibility
study. The differential NPV values in the above table are within 4% of the AMEC
estimated differential NPV values considering the process plant and site
infrastructure only. The differential NPV is a suitable measure to determine the
possible economic improvements from implementing the SAG mill option as it
relates to the processing plant. There is a +/-25% accuracy associated with the
cost study review.
To view the figure accompanying this press release, please visit the following link:
http://media3.marketwire.com/docs/870460.jpg
Bruno Modelling (A Metso process optimization tool)
Bruno modelling was conducted to model circulating loads around the main front
end comminution equipment. The basis for the Bruno modelling is shown in the
table below.
------------------------
ABC SAG Mill
----------------------------------------------------------------------------
Secondary, Tertiary Crusher
Circuit
Run time % 75 65
Run rate t/h 1322 1967
----------------------------------------------------------------------------
h (downstream
Fine Ore Stockpile (FOS) capacity) 12
t live 13 076
----------------------------------------------------------------------------
Mill/Repulp
Type Rod SSSAG
In acid? No Yes
No. of 3 1
Run time % 88 91
Run rate t/h 1127 1400
Water added to mill/repulp
circuit m3/h 628 1372
----------------------------------------------------------------------------
Leach Circuit
Solids rate t/h 1127 1400
Solids density % 65 48
Water t/h 607 1517
Water m3/h 607 1517
Water SG 1 1
Solids SG 2.7 2.7
Slurry total m3/h 1024 2036
Pulp density t/m3 1.69 1.43
----------------------------------------------------------------------------
Capex
The capital cost summary for the SAG mill is set out below:
----------------------------------------------------------------------------
Amount
Description (US$)
----------------------------------------------------------------------------
Buildings 4 172 646
Process plant 186 307 010
Services and utilities 6 127 350
Reagents 8 759 293
Contractor mobilisation and
demobilisation 4 413 834
----------------------------------------------------------------------------
Direct Construction Costs 209 780 132
----------------------------------------------------------------------------
First fills and spares 9 369 024
Temporary services and facilities 3 219 262
----------------------------------------------------------------------------
Total Costs before EPCM and
Contingency 222 368 418
----------------------------------------------------------------------------
EPCM allowance 27 362 854
----------------------------------------------------------------------------
Total Costs before Contingency 249 731 272
----------------------------------------------------------------------------
Optimization Opportunities, Risks and Next Steps
Opportunities for further project and process improvement that were identified
in the AMEC ECS and warrant further investigation include:
-- Potential to increase the overall uranium extraction and recovery to
above the present assumed 85% by optimizing leach and filtration
conditions further and also considering the finer grind size associated
with the SAG mill.
-- Leach optimization, especially with regards to using a higher leach
temperature, could result in a significant reduction in the required
leach residence time and associated circuit size.
-- The present study assumed 91% availability for the SAG mill and
downstream circuits, which could potentially be improved, especially
considering the relative simplicity of this comminution circuit.
-- Potential of a higher throughput than the 11.2 Mt/a assumed for the
current study exists, and was cursorily explored and could provide
additional economic benefits.
The main risk identified during the current study is the potential implications
of the iron chemistry on reagent consumption, which needs better definition.
The Company is defining a scope of work for the purpose of conducting a tender
process to select an engineering firm to complete the feasibility study. The
non-exhaustive scope of work will include:
-- A detailed design and costing of mine plans and associated Capex.
-- Further testwork including confirming recent testwork that reported
higher uranium recoveries.
-- A review of administration overheads.
-- Detailed flowsheets to integrate with the re-designed mill.
-- Completion of appropriate economic models.
-- Completion of appropriate documentation and drawings.
NORASA - Consolidated Namibian Projects
The Company announced in September 2012 a consolidation of its various uranium
projects in the Erongo region of Namibia (Valencia and Namibplaas), and in
January 2013 the Company announced the combined projects are now known as the
Norasa Uranium Project. Norasa is an everyday term used by the rich and diverse
culture of the Damara people and means united or putting things together.
Qualified Person
Mr. Dag Kullmann, M.Sc., General Manager and Project Engineer Norasa Operations,
and a Fellow of the Southern African Institute of Mining and Metallurgy (SAIMM),
is the designated QP responsible for the reporting of Mineral Reserves.
About Forsys Metals Corp.
Forsys Metals Corp. is an emerging uranium producer with 100% ownership of the
fully permitted Valencia uranium project and the Namibplaas uranium project in
Namibia, Africa a politically stable and mining friendly jurisdiction.
Information regarding current National Instrument 43-101 compliant Resource and
Reserves at Valencia and Namibplaas are available on our website.
On behalf of the Board of Directors of Forsys Metals Corp.
Marcel Hilmer
Chief Executive Officer
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 15, 2013, 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: 109,875,422
FOR FURTHER INFORMATION PLEASE CONTACT:
Forsys Metals Corp.
Marcel Hilmer
Chief Executive Officer
+61 417 177 942
mhilmer@forsysmetals.com
www.forsysmetals.com
TMX Equicom
Joe Racanelli
+1 416-815-0700 Ext 243
JRacanelli@equicomgroup.com
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