Nova investigates HydroFloat for Korbel gold
Original announcement by miningnewsnorth on
- Company
- Nova Minerals Ltd.
- Ticker
- Unavailable
- Exchange
- Unavailable
- Region
- Alaska
- Primary commodity
- Gold
- Secondary commodities
- Antimony
- Document categories
- Metallurgy
- Extracted
- 2026-09-19 01:32:58 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
Nova Minerals has demonstrated strong gold recoveries using HydroFloat coarse-particle flotation technology at its Estelle project in Alaska. The technology aims to produce a high-grade concentrate (14.7-26.7 g/t Au) from bulk-tonnage ore, potentially reducing energy use and simplifying the downstream CIL circuit.
Reasoning: Feasibility-level metallurgical testing of HydroFloat technology shows strong gold recovery and concentrate grades, promising improved project economics for the Korbel deposit.
Positive factors
- High recovery potential (>95%)
- Significant concentrate grade improvement
- Potential for lower CAPEX/OPEX via coarse grind
- Simplification of flowsheet
Facts used in scoring: 2
Classification and evidence
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: HydroFloat demonstrated ability to capture more than 95% of gold into concentrate.
Evidence · text
“capture more than 95% of the gold from Korbel ore”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The process involves flotation and a CIL plant.
Evidence · text
“sent to a carbon-in-leach (CIL) plant for final recovery”
Heap Leach Routeneutral
Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.
Why it applies: the document describes a heap_leach route ("heap leaching")
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: the document describes a gravity route ("gravity")
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: only one composite was tested
Extracted facts
Stored fact records: 2. Some facts used in scoring do not have a stored record.
Metallurgical Results (2)
flotationKorbel · goldRecovery: 95 %Head Grade: 0.3Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Korbel
- Commodity
- gold
- Region
- usa_ak
- Reported Region
- Alaska
Test Work
- Program Status
- detailed
- Test Type
- flotation
- Processing Route
- blend of gravity separation and floatation (HydroFloat) followed by CIL
- Sample
- Korbel ore
Recovery
- Recovery
- 95 %
- Head Grade
- 0.3
- Head Grade Unit
- g/t
- Conc. Grade
- 14.7
- Conc. Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-07-09T00:00:00.000Z
Reasoning: Demonstrated ability to capture >95% gold into a high-grade concentrate using HydroFloat technology.
Positive factors
- High recovery (>95%)
- Coarse grind capability
Evidence · text
“HydroFloat has the ability to capture more than 95% of the gold from Korbel ore into a high-grade concentrate with a grade between 14.7 and 26.7 g/t gold.”
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the mill_cil signal
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 95% is at or above the exceptional band (95%)
flotationKorbel · goldRecovery: 95 %Head Grade: 0.3Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Korbel
- Commodity
- gold
- Region
- usa_ak
- Reported Region
- Alaska
Test Work
- Program Status
- detailed
- Test Type
- flotation
- Processing Route
- blend of gravity separation and floatation (HydroFloat) followed by CIL
- Sample
- Korbel ore
Recovery
- Recovery
- 95 %
- Head Grade
- 0.3
- Head Grade Unit
- g/t
- Conc. Grade
- 26.7
- Conc. Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-07-09T00:00:00.000Z
Reasoning: Demonstrated ability to capture >95% gold into a high-grade concentrate using HydroFloat technology.
Positive factors
- High recovery (>95%)
- Coarse grind capability
Evidence · text
“HydroFloat has the ability to capture more than 95% of the gold from Korbel ore into a high-grade concentrate with a grade between 14.7 and 26.7 g/t gold.”
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the mill_cil signal
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 95% is at or above the exceptional band (95%)
How Atlas produces this analysis
Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.