Source MARKET NEWS Date 09/11/2013 Time 03:48:50 AM

Date 09/11/2013
Time 03:48:50 AM
Kivalliq Energy Corporation
Title Positive
Metallurgical Results from J4 Zone and
CDNX Symbol: KIV
Press Release
- Positive Metallurgical Results from J4 Zone and Ore Sorting Studies
Kivalliq Energy Corporation ("Kivalliq") provided an update on ongoing
metallurgical and beneficiation studies for Kivalliq's 340,268 acre
Property in Nunavut Territory. This update summarizes preliminary results
from work performed on the Lac 50 Trend deposits, including:
testing of the J4 and Lac 50 zones as well as characterization studies
related to optimal ore sorting methods.
"Results from ongoing metallurgical work at Lac 50 are encouraging,"
stated Chuck Edwards, Director of Metallurgy at AMEC. "Optimizing
recovery, plus improvements to alkaline leach kinetics using oxygen as
oxidant, could have a positive impact on reducing costs associated with
potential treatment options."
Key Point Summary:
J4 Zone flotation achieved an optimum sulphide recovery of 99.2% in
alkaline solution at a grind size of 100% passing 140 mesh (106 m).
Positive alkaline leach results on J4 Zone indicate rapid uranium
extraction: 92.3% in 12 hours, 95.2% in 24 hours and 96.7% in 48 hours.
Using improved alkaline leach parameters defined by the J4 Zone
testing, retesting of the 2012 Lac 50 composite upgraded the leach
extraction of uranium to: 91.7% in 12 hours, 95.1% in 24 hours and 96.4%
in 48 hours. (previous results released February 28, 2013)
J4 Zone sulphide flotation and alkaline leach results are consistent
with other Lac 50 deposits.
Preliminary ore sort characterization of rock specimens from Lac 50
deposits indicates that radiometric sorting will be very effective.
Radiometric characterization analysis demonstrates a 56% reduction in
with 98% U3O8 recovery.
Metallurgical Results Demonstrate High Uranium Recoveries and Rapid
Leach Kinetics
In 2012, the Saskatchewan Research Council ("SRC") commenced a
metallurgical testing program on core from Kivalliq's Lac 50 Trend. The
program objectives were to maximize uranium extraction through the
of sulphides using flotation and optimizing the alkaline leaching
processes. Results from the 2012 metallurgical program were very
encouraging with high U3O8 recovery rates and the production of a low
impurity final yellowcake product. (see Kivalliq news release of February
28, 2013)
In 2013, metallurgical testing was expanded to include a composite
sample from the newly discovered J4 deposit. The goal was to compare
alkaline leach parameters of the J4 Zone to previous test work, while
continuing to develop optimal grinding, sulphide flotation and leach
conditions. A 26.0 kilogram composite derived from 44 split drill core
rejects was submitted to the SRC Mineral Processing Group for
analysis. Pulp samples used in the composite were selected from 17 holes
drilled along 650 metres of strike length at J4 Zone. A head grade sample
taken from the composite and analyzed by total digestion ICP at SRC is
shown in Table 1.
Table 1 J4 Zone Composite Sample ICP Total Digestion Assay (ppm)
Total S
Sulphide flotation on J4 Zone composite material tested variable grind
sizes in water and alkaline solution respectively. An optimum sulphide
recovery of 99.2% was achieved in alkaline solution at a grind size of
passing 140 mesh (106 m).
Alkaline leaching of J4 Zone flotation tails achieved rapid uranium
extraction of 86.7% in 6 hours, 92.3% in 12 hours, 95.2% in 24 hours,
in 48 hours, 97.2% in 72 hours, and 97.5% in 96 hours under the following
conditions: 100% passing 140 mesh grind, 70oC, 50% solids slurry, 50 g/L
Na2CO3 and 20 g/L NaHCO3 solution chemistry and oxygen at 300 kilopascals
as oxidant.
Using the same optimized conditions, an additional test was conducted
on a sample from the 2012 Lac 50 composite (but at 100% passing 200 mesh
grind as per 2012 composite preparation). When compared to the 2012
leach kinetics improved with uranium extractions of 83.6% in 6 hours,
in 12 hours, 95.1% in 24 hours, 96.4% in 48 hours, 97.0% in 72 hours, and
97.3% in 96 hours. Figure 1 compares alkaline leach kinetics from 2013 to
that of 2012.
Figure 1. Optimized Leach Kinetics for J4 Zone composite and 2012 Lac
50 composite samples
Preliminary Ore Sorting Investigation Shows Amenability to Radiometric
In May 2013, Kivalliq engaged TOMRA Sorting Inc. (TOMRA) in Surrey,
British Columbia to characterize a set of rock specimens from the Lac 50
Trend uranium deposits using Radiometric (RM), Dual Energy X-Ray
Transmission (DEXRT), conductivity and magnetic susceptibility (EM) and
visible spectrum (Optical) sensors. Preliminary ore characterization
studies were performed to determine whether mineral sorting technology
could efficiently identify and segregate uranium bearing minerals.
"We are very pleased with the success of preliminary radiometric
sorting." stated Jeff Ward, President Kivalliq Energy. "Larger bulk
using production-scale sorting methods will now be considered as a
processing option to concentrate uranium bearing rocks at Lac 50."
Kivalliq delivered to TOMRA a 1.45 kilogram suite of high grade,
medium grade, low grade and waste specimens, comprised of 138 sized rock
chips (2.0 cm to 3.0 cm across), collected from half split NQ drill core
intersections representative of the Lac 50 Trend uranium deposits.
Characterization measurements were carried out on the entire suite using
the RM, DEXRT, EM and Optical sensors. Following sensor characterization,
individual rock specimens were shipped to SRC for analysis by total
digestion ICP. The average grade of the sample was 1.06% U3O8.
Theoretical perfect sort recovery curves for the samples were obtained
by ordering the individual rocks in descending U3O8 grade. Using the
of the perfect sort and the mass and grade of each specimen, curves were
calculated for a theoretical perfect recovery, concentrate grade and
grade for the samples. These results are then compared to the grade and
recovery curves for each sensors tested.
Using radiometric sensors proved to be the most effective method for
sorting Lac 50 samples by U3O8 grade. RM characterisation was performed
Hazen Research Inc. (Hazen) in Golden Colorado where a RM bench top test
system was configured to simulate a full scale RM sorter. The
perfect sort curve showed 98.3% recovery of U3O8 at a mass recovery of
(or 56% mass rejected with only 1.7% loss of U3O8). The actual short
integration RM sort recovered 98.0% of U3O8 at a mass recovery to
concentrate of 44% (56% mass rejected with 2.0% loss of total U3O8) and
almost identical to a theoretical perfect sort recovery curve.
and tails grades were 2.37% U3O8 and 0.03% U3O8 respectively. Figure 2
shows comparative RM sort curves for the Lac 50 sample.
Figure 2. Comparative RM Sort Curves - Recovery of U3O8 vs. Mass Pull
The SRC facility operates in accordance with ISO/IEC 17025:2005
(CAN-P-4E), General Requirements for the Competence of Mineral Testing
Calibration laboratories and is accredited by the Standards Council of
Canada. The samples are analyzed by SRC's ICP-OES multi-element ICP1
method. ICP1 results are reported in parts per million (ppm). 1 ppm =
1g/tonne, 10,000 ppm = 1%. TOMRA ICP U assays in ppm were converted to %
U3O8 as follows: % U3O8 = ppm U x 0.01179
TOMRA (formerly Commodas Ultrasort and Terra Vision) are leaders in
the specialized field of sensor-based sorting technology for the mining
industry. Experience from 15 test facilities worldwide have led to
significant advances in in automated material identification and sorting
for the mining and mineral processing industries.
Hazen performs research and development for clients in the mineral,
chemical, energy, and environmental fields. The company serves clients
worldwide on projects ranging from bench-scale experiments to continuous
pilot or demonstration plants.
Jeff Ward, P.Geo, President of Kivalliq and a Qualified Person for
Kivalliq, has reviewed and approved the scientific and technical
information contained in this release. For disclosure related to the
inferred resource for the Lac 50 Trend uranium deposit, please refer to
Kivalliq's news release of March 1, 2013.
About Kivalliq Energy Corporation
Kivalliq Energy Corporation (TSX-V: KIV) is a Vancouver-based uranium
exploration company holding Canada's highest-grade uranium resource
of Saskatchewan's Athabasca Basin. Its flagship project, the 340,268 acre
Angilak Property in Nunavut Territory, hosts the Lac 50 Trend with a NI
43-101 Inferred Resource of 2,831,000 tonnes grading 0.69% U3O8, totaling
43.3 million pounds U3O8. Kivalliq's comprehensive exploration programs
continue to advance the Lac 50 Trend and demonstrate the "District Scale"
potential of the Angilak Property. Kivalliq's team of northern
specialists have forged strong relationships with sophisticated resource
sector investors and project partner Nunavut Tunngavik Inc. ("NTI") in
order to advance the Angilak Property. Kivalliq was the first company to
sign a comprehensive agreement to explore for uranium on Inuit Owned
in Nunavut Territory, Canada and is committed to building shareholder
while adhering to high levels of environmental and safety standards and
proactive local community engagement.
For Angilak Property data tables, maps and figures:
To view a short video related to the Angilak Property, Evolution of
the Lac 50 Trend, click here: Evolution of the Lac 50 Trend
On behalf of the Board of Directors
"Jim Paterson"
James R. Paterson, CEO
Kivalliq Energy Corporation
Kivalliq Energy Corporation is a member of the Aurora Mineral Resource
Group of companies, for more information please visit
Neither the TSX Venture Exchange nor its Regulation Services Provider
(as that term is defined in the policies of the TSX Venture Exchange)
accepts responsibility for the adequacy or accuracy of this release.
Certain disclosures in this release, including the budget and
exploration program proposed for the Angilak Property, constitute
forward-looking statements that are subject to numerous risks,
uncertainties and other factors relating to Kivalliq's operations as a
mineral exploration company that may cause future results to differ
materially from those expressed or implied in such forward-looking
statements, including risks as to the completion of the plans and
Readers are cautioned not to place undue reliance on forward-looking
statements. Other than as required by applicable securities legislation,
Kivalliq expressly disclaims any intention or obligation to update or
revise any forward-looking statements whether as a result of new
information, future events, or otherwise.
Cautionary Note concerning estimates of Inferred Resources:
This news release uses the term "inferred resources". Inferred
resources have a great amount of uncertainty as to their existence, and
great uncertainty as to their economic and legal feasibility. It cannot
assumed that all or any part of an Inferred Mineral Resource will ever be
upgraded to a higher category. Kivalliq advises U.S. investors that while
this term is recognized and required by Canadian regulations, the U.S.
Securities and Exchange Commission does not recognize it. U.S. investors
are cautioned not to assume that part or all of an inferred resource
exists, or is economically or legally mineable.
Kivalliq Energy Corporation
TSX Venture closing price for KIV-V
Date: 2013/09/10
Closing Price: 0.25
TEL: 1.888.331.2269 Investor Relations
Kivalliq Energy Corporation
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