EV Nickel Reports Strong Pilot-Scale Bioleach Results With Over 90% Nickel Extraction And Successful Nickel Sulphate Production
Original announcement by tmx on
- Company
- EV Nickel Inc.
- Ticker
- EVNI
- Exchange
- TSX
- Region
- Ontario
- Primary commodity
- Nickel
- Secondary commodities
- Cobalt, Magnesium, Iron ore, Copper
- Document categories
- Metallurgy
- Extracted
- 2026-09-12 04:20:16 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
EV Nickel has reported successful pilot-scale bioleaching results at its W4 Nickel Project, achieving over 90% nickel and 89% cobalt extraction. The program demonstrated the ability to produce high-purity nickel sulphate (98.2%) and recover magnesium as a by-product, validating the company's low-carbon processing flowsheet.
Reasoning: The pilot-scale bioleach results demonstrate high recovery rates for nickel and cobalt and a viable pathway to battery-grade products, representing a major technical milestone for the W4 Project.
Positive factors
- High nickel extraction (>90%) at pilot scale
- Successful production of high-purity nickel sulphate (98.2%)
- Demonstrated scalability with 600L bacterial scale-up
- Recovery of magnesium as a saleable by-product
- Low acid consumption compared to traditional hydrometallurgy
Facts used in scoring: 7
Classification and evidence
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Nickel extraction achieved over 90% at pilot scale and up to 98.9% in batch tests.
Evidence · text
“90.1% Ni and 89.6% Co extraction achieved at day six”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The process involves flotation concentrates followed by bioleaching and downstream precipitation.
Evidence · text
“conducted on flotation concentrates from its W4 Nickel Project”
Multi-Domain Testedpositive
Variability across ore domains (oxide, transition, fresh) has been addressed.
Why it applies: 4 distinct composites were tested
Extracted facts
Stored fact records: 7. Some facts used in scoring do not have a stored record.
Metallurgical Results (7)
pilot plantW4 Nickel Project · nickelRecovery: 90.1 %Head Grade: 6.4Head Grade Unit: %View all detailsHide details
Identity
- Project
- W4 Nickel Project
- Commodity
- nickel
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- EVNI
Test Work
- Program Status
- detailed
- Test Type
- pilot plant
- Processing Route
- bioleach
- Sample
- Pilot circuit continuous operation (day six)
Recovery
- Recovery
- 90.1 %
- Recovery Basis
- actual_test
- Head Grade
- 6.4
- Head Grade Unit
- %
Lab
- Laboratory
- RPC Metallurgical Services
- Consultant
- EPCM Services Ltd.
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-02-03T00:00:00.000Z
Reasoning: 90.1% Ni extraction at pilot scale is a strong result for bioleaching technology.
Positive factors
- Exceeds 90% extraction threshold
Evidence · text
“90.1% Ni and 89.6% Co extraction achieved at day six”
Tags used in scoring
Pilot Scale Completepositive
Pilot or demonstration plant testing completed under continuous operation.
Why it applies: test_type names pilot-scale work
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 90.1% is at or above the exceptional band (90%)
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
pilot plantW4 Nickel Project · cobaltRecovery: 89.6 %Head Grade: 6.4Head Grade Unit: %View all detailsHide details
Identity
- Project
- W4 Nickel Project
- Commodity
- cobalt
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- EVNI
Test Work
- Program Status
- detailed
- Test Type
- pilot plant
- Processing Route
- bioleach
- Sample
- Pilot circuit continuous operation (day six)
Recovery
- Recovery
- 89.6 %
- Recovery Basis
- actual_test
- Head Grade
- 6.4
- Head Grade Unit
- %
Lab
- Laboratory
- RPC Metallurgical Services
- Consultant
- EPCM Services Ltd.
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-02-03T00:00:00.000Z
Reasoning: 89.6% Co extraction is a robust result for a pilot-scale bioleach program.
Positive factors
- Strong cobalt extraction alongside nickel
Evidence · text
“90.1% Ni and 89.6% Co extraction achieved at day six”
Tags used in scoring
Pilot Scale Completepositive
Pilot or demonstration plant testing completed under continuous operation.
Why it applies: test_type names pilot-scale work
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
batchW4 Nickel Project · nickelRecovery: 98.9 %View all detailsHide details
Identity
- Project
- W4 Nickel Project
- Commodity
- nickel
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- EVNI
Test Work
- Program Status
- detailed
- Test Type
- batch
- Processing Route
- bioleach
- Sample
- Batch and semi-continuous bioleaching testing
Recovery
- Recovery
- 98.9 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-02-03T00:00:00.000Z
Reasoning: 98.9% Ni extraction in batch testing shows high potential for the technology.
Positive factors
- Very high extraction rate in batch mode
Evidence · text
“Ni extraction of up to 98.9% and Co extraction of up to 98.8% was achieved”
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 98.9% is at or above the exceptional band (90%)
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
batchW4 Nickel Project · cobaltRecovery: 98.8 %View all detailsHide details
Identity
- Project
- W4 Nickel Project
- Commodity
- cobalt
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- EVNI
Test Work
- Program Status
- detailed
- Test Type
- batch
- Processing Route
- bioleach
- Sample
- Batch and semi-continuous bioleaching testing
Recovery
- Recovery
- 98.8 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-02-03T00:00:00.000Z
Reasoning: 98.8% Co extraction in batch testing is excellent.
Positive factors
- Very high extraction rate in batch mode
Evidence · text
“Ni extraction of up to 98.9% and Co extraction of up to 98.8% was achieved”
Tags used in scoring
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
batchW4 Nickel Project · nickelRecovery: 95 %View all detailsHide details
Identity
- Project
- W4 Nickel Project
- Commodity
- nickel
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- EVNI
Test Work
- Program Status
- detailed
- Test Type
- batch
- Processing Route
- bioleach
- Sample
- Large-batch bioleach tests at 5% and 10% solids
Recovery
- Recovery
- 95 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-02-03T00:00:00.000Z
Reasoning: 95% Ni extraction at 5-10% solids density supports future scale-up.
Positive factors
- Maintains high recovery at low solids density
Evidence · text
“achieving ~95% nickel extraction within 10 days”
Tags used in scoring
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 (90%)
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
pilot plantW4 Nickel Project · nickelRecovery: 99 %View all detailsHide details
Identity
- Project
- W4 Nickel Project
- Commodity
- nickel
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- EVNI
Test Work
- Program Status
- detailed
- Test Type
- pilot plant
- Processing Route
- bioleach
- Sample
- Mixed hydroxide precipitate (MHP) from pregnant leach solution
Recovery
- Recovery
- 99 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-02-03T00:00:00.000Z
Reasoning: >99% recovery of Ni to MHP is a critical downstream success.
Positive factors
- Extremely high recovery to MHP
Evidence · text
“>99% recovery of Ni and Co as a mixed hydroxide precipitate ("MHP")”
Tags used in scoring
Pilot Scale Completepositive
Pilot or demonstration plant testing completed under continuous operation.
Why it applies: test_type names pilot-scale work
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 99% is at or above the exceptional band (90%)
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
pilot plantW4 Nickel Project · cobaltRecovery: 99 %View all detailsHide details
Identity
- Project
- W4 Nickel Project
- Commodity
- cobalt
- Region
- canada_on
- Reported Region
- Ontario
- Ticker
- EVNI
Test Work
- Program Status
- detailed
- Test Type
- pilot plant
- Processing Route
- bioleach
- Sample
- Mixed hydroxide precipitate (MHP) from pregnant leach solution
Recovery
- Recovery
- 99 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-02-03T00:00:00.000Z
Reasoning: >99% recovery of Co to MHP is a critical downstream success.
Positive factors
- Extremely high recovery to MHP
Evidence · text
“>99% recovery of Ni and Co as a mixed hydroxide precipitate ("MHP")”
Tags used in scoring
Pilot Scale Completepositive
Pilot or demonstration plant testing completed under continuous operation.
Why it applies: test_type names pilot-scale work
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
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.