Skip to main content

AI assistant

Sign in to chat with this filing

The assistant answers questions, extracts KPIs, and summarises risk factors directly from the filing text.

ATHENA RESOURCES LIMITED Capital/Financing Update 2011

Aug 1, 2011

64341_rns_2011-08-01_f0755b5a-9239-45ab-ba8e-795bd884368d.pdf

Capital/Financing Update

Open in viewer

Opens in your device viewer

==> picture [133 x 76] intentionally omitted <==

63 Lindsay Street Perth WA 6000 p 61 8 9428 2900 f 61 8 9428 2910 e [email protected] www athenaresources.com.au ABN : 69 113 758 900

2 August 2011

The Company Announcements Office Australian Securities Exchange Limited 4 Floor 20 Bridge Street SYDNEY NSW 2000

ALS AMMTEC METALLURGICAL RESULTS ON BYRO MAGNETITE

Excellent results from ALS AMMTEC confirm CRIMM’s Mineralogical Study and Metallurgical Beneficiation Testwork at a coarse grind size of P80 250µm (¼ mm) gives the following results:

  • Magnetite Concentrate Grade 94.8%  Fe Concentrate Grade 68.6%  Fe Recovered in processing 94.1%  Mass recovered in processing 49.4%

Grind Establishment Results showed that a grind size of 250µm was achieved in 101 seconds compared to 75µm in 870 seconds.

These results indicate a simple processing circuit comprising crushing, grinding and wet low intensity magnetic separation resulting in savings in both capital and operating costs.

The coarse grind size also simplifies handling logistics.

ASX: AHN

Page 1

==> picture [133 x 76] intentionally omitted <==

Details

The Directors of Athena Resources Limited (ASX: AHN) are pleased to advise that the Company has received the testwork report from ALS Ammtec.

ALS Ammtec were engaged by Athena in April 2011 to undertake beneficiation testing on samples from the Byro magnetite deposit to provide supporting results to the testwork conducted at Changsha Research Institute of Mining and Metallurgy (“CRIMM”). Results from both studies are to be used to provide a scientific basis for decision-making regarding the future development and investment of the Byro Project.

A total of sixteen PQ drill core samples (approximately 80kg) and a composite RC Chips sample (approximately 12kg) were delivered to ALS Ammtec in May 2011. The testing was completed in July 2011 and the main points of the results are reported below.

Wet Low Intensity Magnetic Separation Results

Magnetite Grade in Concentrate
P80 250µm 94.8% Fe3O4
P80 150µm 97.9% Fe3O4
P80 125µm 98.5% Fe3O4
Fe Grade in Concentrate
P80 250µm 68.6% Fe
P80 150µm 70.8% Fe
P80 125µm 71.3% Fe
Fe Recovery
P80 250µm 94.1%
P80 150µm 93.7%
P80 125µm 93.1%
Mass Recovery
P80 250µm 49.4%
P80 150µm 47.4%
P80 125µm 46.5%

These results were achieved from an iron head grade of 35.5% Fe. Full results are in Appendix 1.

==> picture [7 x 8] intentionally omitted <==

----- Start of picture text -----

2
----- End of picture text -----

ASX: AHN

Page 2

==> picture [133 x 76] intentionally omitted <==

Grind Establishment Testwork

From the Particle Size Distributions of the grind establishment test work a chart was produced indicating the potential for capital and power cost savings from the coarser grind size. Refer to following chart and Appendix 2.

==> picture [452 x 212] intentionally omitted <==

==> picture [454 x 240] intentionally omitted <==

----- Start of picture text -----

Comparative Grind Size by Company
300.0
250.0
250.0
200.0
150.0
100.0
75.0 75.0
50.0 38.5 40.0 40.0
32.0
25.0 25.0 23.0 25.0
0.0
AHN EMG GBG ACS FXR GRR IRD ARH MDX LML ROY
Company
microns
----- End of picture text -----

Source : ASX Announcements

==> picture [7 x 9] intentionally omitted <==

----- Start of picture text -----

3
----- End of picture text -----

ASX: AHN

Page 3

==> picture [133 x 76] intentionally omitted <==

Major Results from Beneficiation Testwork

  • Unconfined Compressive Strength (UCS) recorded values of 139.9 and 153.7 Mpa and recorded a strength classification of strong.

  • Bond Impact Crushing Work Index (CWi) recorded average value of 15.5 kWh/t with a maximum value of 21.5 kWh/t and a minimum value of 8.2 kWh/t.

  • Apparent Relative Density recorded values of 3.52, 3.53 and 3.56 g/cc.

  • Bond Ball Mill Work Index recorded a value of 16.5 kWh/t from a test aperture of 106 micron.

  • Bond Abrasion Index recorded a value of 3.894

  • Head assays were reported as;-

Sample Fe % SiO2
%
Al2O3
%
TiO2 % MnO % CAO % P % S %
Core 35.4 45.1 0.59 0.057 0.15 1.75 0.035 0.017
RC Chip 35.5 44.5 1.08 0.074 0.14 1.55 0.050 0.041
  • An asbestiform analysis indicated the absence of asbestos or fibrous hazard.

These results confirm a relatively simple processing circuit is required for treatment of Byro magnetite ore.

The proposed processing circuit is likely to consist of the following:

  • Conventional three stage crushing,

  • Primary grinding and coarse classification,

  • Wet low intensity magnetic separation at coarse grind,

  • Secondary grinding and classification at P80 of 125 micron,

  • Rougher wet low intensity magnetic separation,

  • Cleaner wet low intensity separation,

  • Concentrate thickening and filtration.

E W Edwards Managing Director

4

ASX: AHN

Page 4

==> picture [133 x 76] intentionally omitted <==

About Athena Resources Limited

Athena Resources Limited (ASX:AHN), which is based in Perth, was listed on the ASX in 2007 and currently has 107 million shares on issue. Athena’s major asset is its 100% interest in the Byro Project where it is exploring for copper, nickel, PGE’s in addition to iron ore. The company also has significant gold, lead and silver targets in the Ashburton.

The Byro Iron Ore Project is located on the Carnarvon Mullewa road 250km NNE of Mullewa. It is some 100km west of the proposed Midwest Iron Ore Railway which is planned to link existing and future iron ore projects in the Mid-West Region to the proposed Oakajee deep water bulk shipping port north of Geraldton.

==> picture [441 x 162] intentionally omitted <==

==> picture [441 x 162] intentionally omitted <==

Competent Persons Statement The technical information relating to Athena’s exploration projects was compiled by Mr Liam Kelly, an employee of Athena Resources Limited. Mr Kelly is a Member of the Australasian Institute of Mining and Metallurgy, and has sufficient relevant experience in the styles of mineralisation and deposit styles under consideration to qualify as a Competent Person as defined in “ The Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC Code, 2004 edition)”. Mr Kelly consents to this inclusion of the information in this report in the context and format in which it appears

5

ASX: AHN

Page 5

==> picture [133 x 76] intentionally omitted <==

APPENDIX 1

WET LOW INTESTITY SEPERATION RESULTS

WLIMS Separation 3 WLIMS Separation 3 WLIMS Separation 3 passes at 900 Gauss–Core Composite–P80 of 250µm passes at 900 Gauss–Core Composite–P80 of 250µm passes at 900 Gauss–Core Composite–P80 of 250µm passes at 900 Gauss–Core Composite–P80 of 250µm passes at 900 Gauss–Core Composite–P80 of 250µm passes at 900 Gauss–Core Composite–P80 of 250µm passes at 900 Gauss–Core Composite–P80 of 250µm
P80
250
µm
Wt
Dist
%
Fe
Grade
%
Fe
Dist
%
SiO2
Grade
%
SiO2
Dist
%
Al2O3
Grade
%
Al2O3
Dist
%
P
Grade
%
P
Dist
%
S
Grade
%
S
Dist
%
Mags 49.4 68.6 94.1 4.86 5.3 0.31 26.6 0.010 14.2 0.001 4.4
N Mag 50.6 4.19 5.9 84.4 94.7 0.81 73.4 0.059 85.8 0.021 95.6
Head 100 36.0 100 45.1 100 0.56 100 0.035 100 0.017 100
WLIMS Separation 3 WLIMS Separation 3 WLIMS Separation 3 passes at 900 Gauss–Core Composite–P80 of 150µm passes at 900 Gauss–Core Composite–P80 of 150µm passes at 900 Gauss–Core Composite–P80 of 150µm passes at 900 Gauss–Core Composite–P80 of 150µm passes at 900 Gauss–Core Composite–P80 of 150µm passes at 900 Gauss–Core Composite–P80 of 150µm passes at 900 Gauss–Core Composite–P80 of 150µm
P80
150
µm
Wt
Dist
%
Fe
Grade
%
Fe
Dist
%
SiO2
Grade
%
SiO2
Dist
%
Al2O3
Grade
%
Al2O3
Dist
%
P
Grade
%
P
Dist
%
S
Grade
%
S
Dist
%
Mags 47.4 70.8 93.7 1.29 1.4 0.27 26.6 0.006 8.4 0.004 14.1
N Mag 52.6 4.28 6.3 83.8 98.6 0.82 73.4 0.059 91.6 0.022 85.9
Head 100 35.8 100 44.7 100 0.56 100 0.034 100 0.013 100
WLIMS Separation3 WLIMS Separation3 WLIMS Separation3 passes at 900 Gauss–Core Composite– P80 of 125µm passes at 900 Gauss–Core Composite– P80 of 125µm passes at 900 Gauss–Core Composite– P80 of 125µm passes at 900 Gauss–Core Composite– P80 of 125µm passes at 900 Gauss–Core Composite– P80 of 125µm passes at 900 Gauss–Core Composite– P80 of 125µm passes at 900 Gauss–Core Composite– P80 of 125µm
P80
125
µm
Wt
Dist
%
Fe
Grade
%
Fe
Dist
%
SiO2
Grade
%
SiO2
Dist
%
Al2O3
Grade
%
Al2O3
Dist
%
P
Grade
%
P
Dist
%
S
Grade
%
S
Dist
%
Mags 46.5 71.3 93.1 0.86 0.9 0.27 22.3 0.004 5.4 0.003 9.8
N Mag 53.5 4.63 6.9 83.4 99.1 0.82 77.7 0.061 94.6 0.024 90.2
Head 100 35.8 100 44.7 100 0.56 100 0.034 100 0.013 100
WLIMS Separation3 passes at 900 Gauss–Core Composite– P80 of 106µm
P80
106
µm
Wt
Dist
%
Fe
Grade
%
Fe
Dist
%
SiO2
Grade
%
SiO2
Dist
%
Al2O3
Grade
%
Al2O3
Dist
%
P
Grade
%
P
Dist
%
S
Grade
%
S
Dist
%
Mags 46.9 71.3 93.8 0.70 0.7 0.27 22.1 0.004 5.3 0.003 9.3
N Mag 53.1 4.16 6.2 84.0 99.3 0.84 77.9 0.063 94.7 0.026 90.7
Head 100 35.7 100 44.9 100 0.57 100 0.035 100 0.015 100
WLIMS Separation3 passes at 900 Gauss–Core Composite– P80 of 75µm
P80
75
µm
Wt
Dist
%
Fe
Grade
%
Fe
Dist
%
SiO2
Grade
%
SiO2
Dist
%
Al2O3
Grade
%
Al2O3
Dist
%
P
Grade
%
P
Dist
%
S
Grade
%
S
Dist
%
Mags 47.5 71.7 93.8 0.55 0.6 0.27 21.9 0.003 4.1 0.004 11.1
N Mag 52.5 4.31 6.2 83.8 99.4 0.87 78.1 0.064 95.9 0.029 88.9
Head 100 36.3 100 44.3 100 0.59 100 0.035 100 0.017 100

6

ASX: AHN

Page 6

==> picture [133 x 76] intentionally omitted <==

APPENDIX 2

GRIND ESTABLISHMENT TESTWORK

Grind Size P80 Grind Time Grind Time Basis
(μm) (Minutes’ Seconds”) Seconds
250 1’41” 101 Actual Measured
150 4’34” 274 Actual Measured
125 6’35” 395 Actual Measured
106 8’28” 508 Actual Measured
75 14’29” 869 Actual Measured
55 1,450 Calculated
35 3,000 Calculated

Calculated times are derived from an exponential line of best fit with a correlation of 99.68%

==> picture [7 x 8] intentionally omitted <==

----- Start of picture text -----

7
----- End of picture text -----

ASX: AHN

Page 7