ANTIMONY-BASED LIQUID METAL BATTERIES
ORE PROCESSING
FLOW SHEET
Dore metallurgical recoveries
•
Gold at 68% 91% (88.9% average)
Silver at 23.2% Average
Antimony concentrate metallurgical recoveries 1,2
•
Antimony at 84% - 91% (89.5% average)
•
Gold at 1% - 2%
•
Silver at 59% -65%
High-grade antimony concentrate (Sb 55-65%)
Low levels of impurities = no penalties
Gold and silver likely by-product payables in Sb concentrates
Potential Antimony processing options include
•
Conventional pyrometallurgical (smelting and roasting)
Hydrometallurgical (solvent extraction)
Bench and pilot scale testing indicates both options are
viable processes for Sb concentrates.
reporting LOM averages by ore type
2 excluding historical tailings
Crushing, SAG
& Ball Milling
Oxide
High Sb
Sulfide
Stibnite Flotation
Antimony
Concentrate
Low Sb
Sulfide
Pyrite Flotation
Transitional
POX
Residuals
Gold Leach
Electrowinning
Dore
Based on the 2020 Feasibility Study (FS) which is intended to be read as a whole and sections should not be read or
relied upon out of context. The information in this presentation is subject to the assumptions, exclusions and
qualifications contained in the FS. See "Regulatory Information" at the end of this presentation. For a summary of
differences between the FS and TRS, see "Cautionary Note and Technical Disclosure" at the beginning of this presentation
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