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Troilus Confirms Excellent Metallurgical Recoveries at Zone X22 With Completed Pilot Plant Test Program

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Troilus Confirms Excellent Metallurgical Recoveries at Zone X22 With Completed Pilot Plant Test Program

 

 

 

 

 

Troilus Gold Corp. (TSX: TLG) (OTCQX: CHXMF) (FSE: CM5R) is pleased to report positive metallurgical results from a pilot plant testing program completed for Zone X22 part of the main mineral reserve pits at its Troilus Project in north-central Quebec, Canada.

 

Justin Reid, CEO and Director of Troilus Gold, commented, “The pilot plant test results from Zone X22 have confirmed the robust metallurgical recoveries projected in our Feasibility Study. Achieving 91.4% for gold, 94.0% for copper, and 87.2% for silver, these results demonstrate the consistency and predictability of our ore body across all zones. The confirmation of these metallurgical recoveries at X22 not only enhances our confidence in the projected production rates but also underscores our commitment to environmental stewardship, as our process remains cyanide-free.”

 

Previously, metallurgical recoveries applied to X22 in the Feasibility Study were based on extrapolated data from the J Zone. This recent pilot testing has confirmed strong metallurgical recoveries for X22 that are in line with the other main mineral zones (Z87, J Zone and Southwest), ensuring a high level of accuracy in our processing strategy that reinforces the robustness of our overall project flowsheet.

 

Metallurgical Test Program Overview

 

The pilot plant test program involved two representative composite samples from X22, totaling approximately 1.5 tonnes (1,500 kg) each, which were sent to Eriez’s metallurgical pilot test facility in Erie, Pennsylvania. These samples were prepared from coarse assay rejects from the various domains of X22. These samples underwent rigorous flotation testing to produce a bulk concentrate, which was then re-ground and cleaned in closed circuit to yield the final product grades and recovery rates. Results from the pilot plant test work are summarized in Table 1.

 

Table 1. Eriez Flotation (no gravity gold recovery) Results for Samples X22-1 and X22-2

 

Sample

Head Grade Concentrate Grade Recoveries
Au
(g/t)
Cu
(%)
Ag
(g/t)
Au
(g/t)
Cu
(%)
Ag
(g/t)
Au
(%)
Cu
(%)
Ag
(%)
X22-1 0.33 0.07 1.11 65.9 14.35 213.6 91.42 94.03 87.22
X22-2 0.32 0.02 0.48 205.7 15.09 263.1 93.03 91.09 80.9
                   

 

A split of each of the X22 samples was also sent to FLSmidth Knelson testing facility in Salt Lake City, Utah, to conduct Extended Gravity Recoverable Gold (“EGRG”) testing, an industry standard test that characterizes the amenability of gold recovery using gravity techniques. Gravity Recoverable Gold (“GRG”) in both samples for X22 were in line with results previously obtained for zones Z87, J, and Southwest. GRG results for all zones are summarized in Table 2.

 

Table 2. Gravity Gold Recovery (GRG) comparison for Zones J, 87, Southwest and X22

 

Sample Head Au
Grade
(g/t)
Tail Au
Grade
(g/t)
Concentrate
Au Grade
(g/t)
Concentrate
(% wt)
GRG Value
(%)
Gold Grain
Size
J Zone
800 kg 0.57 0.29 20.3 1.4 50.1 Coarse/Very Coarse
3,000 kg 0.51 0.23 20.1 1.4 54.8 Moderate/Coarse
Zone 87
800 kg 0.56 0.25 24.7 1.3 55.5 Very Coarse
3,000 kg 0.63 0.33 23.8 1.3 47.6 Coarse
Southwest Zone
1 – 800kg 0.4 0.25 11.6 1.3 37.1 Moderate
2- 800 kg 0.56 0.26 13.3 1.3 42.3 Coarse
3,000kg 0.66 0.44 17.4 1.3 34.6 Moderate
Zone X22
1 -1,500kg 0.48 0.27 17.6 1.2 44.5 Coarse
2- 1,500 kg 0.55 0.26 24.5 1.2 51.7 Coarse
             

 

Recoveries obtained for zone X22 using flotation technology, an industry standard processing method, ranged from 91.42% to 93.03% for gold, 91.09% to 94.03% for copper and 80.9% to 87.22% for silver, which are consistent with the recoveries obtained for Zones 87, J and Southwest. An overview of metallurgical results from all zones are summarized in Table 3.

 

Table 3. X22 Zones 87, J and Southwest Metallurgical Test Work Results* 

 

Zone   Head Grade Final Tails Grade Overall Recoveries (%)
Gold 
(g/t)
Copper 
(%)
Silver 
(g/t)
Au 
(g/t)
Copper 
(%)
Silver 
(g/t)
Gold
Recovery
Copper
Recovery
Silver
Recovery
3000 Kg Composite
J ZONE 0.434 0.059 0.836 0.035 0.006 0.096 92.80 90.40 90.40
SOUTHWEST 0.624 0.065 1.123 0.078 0.004 0.124 84.00 93.40 87.60
Z87 0.59 0.07 0.262 0.029 0.003 0.022 94.00 95.10 97.80
1500 Kg Composite
X22(1) 0.324 0.024 0.476 0.023 0.002 0.091 94.10 96.20 90.80
X22(2) 0.327 0.069 1.11 0.028 0.004 0.142 94.30 93.10 85.5
800 Kg Composite
J ZONE 0.371 0.059 0.772 0.036 0.004 0.141 92.70 93.20 85.90
SOUTHWEST 0.388 0.052 0.762 0.046 0.005 0.138 90.60 91.30 86.20
Z87 0.46 0.072 0.353 0.03 0.007 0.03 94.00 88.10 96.70
                   

*Primary grind P80 = 75 microns, rougher/scavenger concentrate re-grind P80 = 20 microns.

 

Qualified Person

 

The scientific and technical information contained in this news release has been reviewed and approved by Joseph C. Milbourne, Registered Member SME, Manager of Technical Services for Troilus Gold Corp., who is a Qualified Person within the meaning of NI 43-101. Mr. Milbourne is an employee of Troilus and is therefore not considered independent of the Company under NI 43-101.

 

About Troilus Gold Corp.

 

Troilus Gold Corp. is a Canadian development-stage mining company focused on the systematic advancement of the former gold and copper Troilus Mine towards production. Troilus is located in the tier-one mining jurisdiction of Quebec, Canada, where it holds a large land position of 435 km² in the Frôtet-Evans Greenstone Belt. A Feasibility Study completed in May 2024 supports a large-scale 22-year, 50ktpd open-pit mining operation, positioning it as a cornerstone project in North America.

 

Posted June 25, 2024

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