# Nova investigates HydroFloat for Korbel gold

Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/nova-investigates-hydrofloat-for-korbel-gold--fe0d3073-baab-400b-8c0b-da52847a946f

Original source: https://www.miningnewsnorth.com/story/2026/07/03/news-nuggets/nova-investigates-hydrofloat-for-korbel-gold/9751.html

Publisher: miningnewsnorth

Original announcement: 2026-07-09T00:00:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: 2026-09-19T01:32:57.473Z

Atlas analysis updated: 2026-09-19T01:32:57.473Z

- 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

Narrative sentiment: 0.80 · Bullish

## Minestarters Atlas 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 factor: High recovery potential \(>95%\)

- Positive factor: Significant concentrate grade improvement

- Positive factor: Potential for lower CAPEX/OPEX via coarse grind

- Positive factor: Simplification of flowsheet

Facts used in scoring: 2

## Classification and evidence

**High Recovery**

Polarity: positive

Definition: 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 Route**

Polarity: neutral

Definition: 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 Route**

Polarity: neutral

Definition: Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.

Why it applies: the document describes a heap\_leach route \("heap leaching"\)

**Gravity Route**

Polarity: neutral

Definition: Gravity separation forms a material part of the flowsheet.

Why it applies: the document describes a gravity route \("gravity"\)

**Single Domain Only**

Polarity: negative

Definition: 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)

### flotation

[Link to this fact](https://atlas-staging.minestarters.com/news/nova-investigates-hydrofloat-for-korbel-gold--fe0d3073-baab-400b-8c0b-da52847a946f#fact-metallurgical-facts-0)

Korbel · gold

#### 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 factor: High recovery \(>95%\)

- Positive factor: 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 Route**

Polarity: neutral

Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\).

Why it applies: processing\_route matches the mill\_cil signal

**Gravity Route**

Polarity: neutral

Definition: Gravity separation forms a material part of the flowsheet.

Why it applies: processing\_route matches the gravity signal

**High Recovery**

Polarity: positive

Definition: Recovery at or above the exceptional band for the commodity and processing route.

Why it applies: 95% is at or above the exceptional band \(95%\)

### flotation

[Link to this fact](https://atlas-staging.minestarters.com/news/nova-investigates-hydrofloat-for-korbel-gold--fe0d3073-baab-400b-8c0b-da52847a946f#fact-metallurgical-facts-1)

Korbel · gold

#### 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 factor: High recovery \(>95%\)

- Positive factor: 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 Route**

Polarity: neutral

Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\).

Why it applies: processing\_route matches the mill\_cil signal

**Gravity Route**

Polarity: neutral

Definition: Gravity separation forms a material part of the flowsheet.

Why it applies: processing\_route matches the gravity signal

**High Recovery**

Polarity: positive

Definition: 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.