Anfield Receives Excellent Results From Phase 2 of Its Metallurgical Testing Program at Its Mayaniquel Project, Guatemala
11 Aprile 2011 - 2:30PM
Marketwired
Anfield Nickel Corp. (TSX VENTURE: ANF) ("Anfield") is pleased to
announce that it has received excellent results from phase 2 of its
metallurgical testing program on its 100% owned Mayaniquel nickel
laterite project in northeastern Guatemala. The phase 2 program
tested material from the Tres Juanes deposit to determine its
smelting characteristics and comparability to material from the
Sechol deposit. The results confirm that the Tres Juanes samples
are chemically similar and therefore will have the same smelting
characteristics as those from the Sechol deposit. Based upon the
Tres Juanes samples tested, results show that metallurgical
smelting nickel recoveries of between 91% and 96% are potentially
achievable to produce a ferronickel alloy grading 22.5% nickel. A
ferronickel alloy product containing 20-25% nickel is generally
preferred by most stainless steel producers.
The phase 2 testwork, undertaken at Mintek's laboratory in
Johannesburg, South Africa, was conducted on bulk samples from the
Tres Juanes Norte deposit. Nine composite samples averaging 20
kilograms each were prepared from coarse reject material conserved
during the drill core sample preparation process. The samples
represent the three laterite lithologies found at Tres Juanes
(limonite, transition and saprolite) and targeted low, medium and
high nickel grades from the three lithologies. These samples were
subjected to sub-sampling and chemical analysis and based on their
composition, and related modeling work, three blends were derived.
The three blends consisted primarily of saprolite material (low,
medium and high grade) with varied additions of transition and/or
limonite material to simulate variations in plant feed compositions
that may be encountered during the mining and smelting process.
Blends A and B were also chosen to evaluate the reproducibility
with the phase 1 metallurgical test work completed in September
2010. Blend C was selected to evaluate the smelting of an increased
proportion of higher iron oxide-containing materials, namely
transition and limonite.
The three blends prepared for smelting tests had the following
chemical characteristics.
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Blend A Blend B Blend C
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Ni head grade % (dry basis) 1.80 1.88 1.55
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Fe/SiO2 0.39 0.58 0.62
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SiO2/MgO 1.69 1.69 1.90
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Fe/Ni 8.4 10.3 13.7
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A series of eighteen laboratory smelting tests were conducted on
the three blends (calcined and pre-reduced) using various carbon
additions to evaluate their smelting behaviour (specifically with
regard to carbon requirement and nickel recovery). Ferronickel
alloys were successfully produced from all three blends.
The results from the smelting testwork with calcined blends
confirm that the predictions from the metallurgical smelting model
used to test the Sechol material apply successfully to material
from Tres Juanes. Ferronickel alloys containing 24% to 34% nickel
can be achieved at a recovery rate of 90%, while for a recovery
rate of 94%, ferronickel alloy grades ranging between18% and 26%
nickel are predicted. Based upon a 22.5% nickel in ferronickel
product grade, the three blends from Tres Juanes produced the
following predictive nickel and iron recoveries and power
consumption rates:
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Blend A Blend B Blend C
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Ni head grade % (dry basis) 1.80 1.88 1.55
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MWh/t calcine(i) 0.503 0.511 0.492
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Ni recovery % 95.6 94.0 90.9
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Fe recovery % 38.5 30.9 22.2
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((i) for assumed pre-heating and pre-reduction conditions)
The metallurgical testing program is now focused on determining
the appropriate materials handling methodologies for the Sechol and
Tres Juanes mineralized material including evaluating the
amenability of the material to physical upgrading of nickel (phase
3).
The Mayaniquel project comprises mineral exploration licenses
totaling approximately 54,000 hectares in the nickel laterite belt
surrounding Lake Izabal, 120 kilometers northeast of Guatemala
City. The bulk of Anfield's mineral exploration licenses lie
adjacent to the "Fenix Project" owned by Compania Guatemalteca de
Niquel S.A., a subsidiary of HudBay Minerals, Inc.
On September 20, 2010, Anfield announced that it had received an
interim, independent NI 43-101 compliant mineral resource estimate
for the Mayaniquel project, and is shown in the table below:
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Contained
Dry Metric Nickel Nickel
Tonnes Grade (million
1% Ni cutoff grade (million) (%) pounds)
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Indicated Resource Category
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Transition & Saprolite 12.1 1.57 416.4
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Limonite 7.0 1.14 177.1
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Inferred Resource Category
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Transition & Saprolite 49.6 1.37 1,494.1
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Limonite 13.1 1.11 319.6
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Mineral resources do not have demonstrated economic viability.
Dr. Nicholas Adrian Barcza, BSc, MSc, PhD, PrEng. (ECSA), and a
Metallurgical EngineeringConsultant to Anfield, is the Qualified
Person as defined by NI 43-101 for the metallurgical testing
program at the Mayaniquel Project. Dr. Barcza has reviewed and
approved the contents of this news release as it relates to the
preliminary results of the metallurgical testing program.
ANFIELD NICKEL CORP.
David Strang
CAUTION REGARDING FORWARD LOOKING STATEMENTS: This news release
may contain "forward-looking statements" within the meaning of
theapplicable Canadian securities legislation. Generally, these
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expressed or implied by such forward-looking statements,
includingbut not limited to: risks related to the exploration and
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activities, conclusions of economic evaluations, changes in project
parameters as plans continue to be refined, futureprices of
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relating to risk factors of our business filed in Anfield Nickel
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Nickel Corp. has attempted to identify important factors that could
cause actual results to differ materially from thosecontained in
forward-looking statements, there may be other factors that cause
results to be materially different from those anticipated,
described,estimated, assessed or intended.
There can be no assurance that any forward-looking statements
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Accordingly, readers should not place undue reliance on
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Contacts: Anfield Nickel Corp. David Strang + 604 646-1899 + 604
687-7041 (FAX)
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