Laguna Verde PFS Process Validated
Original announcement by lse on
- Company
- CleanTech Lithium PLC
- Ticker
- CTL
- Exchange
- LSE
- Region
- Chile
- Primary commodity
- Lithium
- Secondary commodities
- Magnesium, Calcium, Sodium, Potassium, Iron ore, Boron, Sulfate, Chlorine
- Document categories
- Metallurgy
- Extracted
- 2026-10-06 07:48:25 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
CleanTech Lithium has successfully validated its Laguna Verde Pre-Feasibility Study (PFS) process through a pilot-scale program in Chile. The trial produced high-purity lithium carbonate (up to 99.75% Li2CO3) and demonstrated lithium recovery and impurity rejection rates that exceeded previous design benchmarks.
Reasoning: Successful pilot-scale validation of the DLE process flowsheet with high-purity product and superior recovery/rejection metrics compared to PFS benchmarks.
Positive factors
- High purity lithium carbonate produced (up to 99.75%)
- Lithium recovery of 98.3% in nanofiltration stage
- Magnesium and calcium rejection exceeded PFS benchmarks
- Pilot scale trial validated PFS process design
- Successful water recycling (>90%)
Facts used in scoring: 4
Classification and evidence
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Lithium recovery of 98.3% in the nanofiltration stage is exceptional.
Evidence · text
“lithium recovery of 98.3%”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The process involves a pilot plant with DLE, nanofiltration, and carbonation stages.
Evidence · text
“processed at Lanshen´s pilot plant facility”
Multi-Domain Testedpositive
Variability across ore domains (oxide, transition, fresh) has been addressed.
Why it applies: 2 distinct composites were tested
Extracted facts
Stored fact records: 4. Some facts used in scoring do not have a stored record.
Metallurgical Results (4)
carbonationLaguna Verde · lithiumView all detailsHide details
Identity
- Project
- Laguna Verde
- Commodity
- lithium
- Region
- chile
- Reported Region
- Chile
- Ticker
- CTL
Test Work
- Program Status
- detailed
- Test Type
- carbonation
- Processing Route
- Direct Lithium Extraction (DLE), purification, concentration, and carbonation
- Sample
- CTL 100 lithium carbonate sample
Recovery
- Conc. Grade
- 99.69
- Conc. Grade Unit
- %
Lab
- Laboratory
- Alex Stewart Laboratory
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-10-06T00:00:00.000Z
Reasoning: High purity lithium carbonate sample produced during pilot stage.
Positive factors
- High purity achieved (99.69%)
Evidence · table
“99.69”
Context: CTL 100
carbonationLaguna Verde · lithiumView all detailsHide details
Identity
- Project
- Laguna Verde
- Commodity
- lithium
- Region
- chile
- Reported Region
- Chile
- Ticker
- CTL
Test Work
- Program Status
- detailed
- Test Type
- carbonation
- Processing Route
- Direct Lithium Extraction (DLE), purification, concentration, and carbonation
- Sample
- CTL 200 lithium carbonate sample
Recovery
- Conc. Grade
- 99.73
- Conc. Grade Unit
- %
Lab
- Laboratory
- Alex Stewart Laboratory
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-10-06T00:00:00.000Z
Reasoning: High purity lithium carbonate sample produced during pilot stage.
Positive factors
- High purity achieved (99.73%)
Evidence · table
“99.73”
Context: CTL 200
carbonationLaguna Verde · lithiumView all detailsHide details
Identity
- Project
- Laguna Verde
- Commodity
- lithium
- Region
- chile
- Reported Region
- Chile
- Ticker
- CTL
Test Work
- Program Status
- detailed
- Test Type
- carbonation
- Processing Route
- Direct Lithium Extraction (DLE), purification, concentration, and carbonation
- Sample
- CTL 300 lithium carbonate sample
Recovery
- Conc. Grade
- 99.75
- Conc. Grade Unit
- %
Lab
- Laboratory
- Alex Stewart Laboratory
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-10-06T00:00:00.000Z
Reasoning: High purity lithium carbonate sample produced during pilot stage.
Positive factors
- High purity achieved (99.75%)
Evidence · table
“99.75”
Context: CTL 300
nanofiltrationLaguna Verde · lithiumRecovery: 98.3 %View all detailsHide details
Identity
- Project
- Laguna Verde
- Commodity
- lithium
- Region
- chile
- Reported Region
- Chile
- Ticker
- CTL
Test Work
- Program Status
- detailed
- Test Type
- nanofiltration
- Processing Route
- Direct Lithium Extraction (DLE), purification, concentration, and carbonation
- Sample
- nanofiltration stage using DuPont FilmTec LiNE-XD
Recovery
- Recovery
- 98.3 %
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-10-06T00:00:00.000Z
Reasoning: High lithium recovery achieved during the nanofiltration stage of the pilot trial.
Positive factors
- Lithium recovery of 98.3% exceeds PFS benchmark
Evidence · text
“lithium recovery of 98.3%”
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 98.3% is at or above the exceptional band (80%)
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.