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Argentina
Kachi Project

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 Location:
22 km W from El Peñon, Argentina

  Project Contacts:
Level 5, 126 Phillip Street
Sydney
New South Wales, Austria
2000
Phone  ...  Subscription required
Fax+61-2-9251-7455
EmailEmail
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StagePre-Feasibility
Mine TypeIn-Situ
Commodities
  • Lithium
  • Potassium
Mining Method
  • Brine mining
Processing
  • Lithium Carbonate Plant
  • Hydrochloric acid (reagent)
  • Reverse osmosis
  • Resin adsorption
  • Direct solvent extraction (DSX)
  • Sodium carbonate (reagent)
  • Ion Exchange (IX)
Mine Life25 years (as of Jan 1, 2020)
Lake Resources NL (ASX: LKE; OTC:LLKKF) has confirms that the production base case will be increased to 50,000 tonnes per annum lithium carbonate equivalent (LCE) in the Definitive Feasibility Study (DFS) and the final investment decision (FID) for the Kachi Lithium Project in Argentina.
The DFS will be expanded from 25,500 tpa LCE to 50,000 tpa LCE, underpinned by an anticipated increased resource estimate from drilling results.
Detailed information, including an updated resource/reserve, operating parameters and financial estimates, regarding the updated base case will be provided close to the date of the anticipated release of the DFS in mid 2022.
The Environmental and Social Impact Study (ESIA) is also underway, together with continued community engagement.
Latest NewsLake Resources Increases Kachi DFS Lithium Production To 50,000 TPA     January 19, 2022


Owners

Source: p. 8
CompanyInterestOwnership
Lake Resources NL 100 % Indirect
The Company owns 100% of the project, which covers 70,000 hectares (170,000 acres) with 37 mineral exploration leases held through Lake’s Argentine subsidiary, Morena del Valle Minerals SA.

Deposit Type

  • Brine


Summary:

The known sediments within the salar consist of salt/halite, clay, sand and silt horizons, accumulated in the salar from terrestrial sedimentation and evaporation of brines. Brines within the Salt Lake are formed by solar concentration, interpreted to be combined with warm geothermal fluids, with brines hosted within sedimentary units. Geology was recorded during the diamond drilling and from chip samples in rotary drill holes.

The Salar de Carachi Pampa is located within a large hinterland water catchment that focuses water flows into the closed drainage intermontane Carachi Pampa basin of about 9,500 km2. In particular, it drains the lithium bearing volcanic rocks of Cerro Galan volcano and associated hot springs, which is also interpreted to be the source of lithium for the Livent’s Fenix lithium brine project production at Salar de Hombre Muerto, about 110 km north of Kachi.

The Carachi Pampa basin is bounded to the east and west by NNE-SSW trending mountain ranges that have been raised by reverse faults to expose a basement sequence of rocks that rise to an elevation of 5,100 metres. The ranges are formed from Ordovician Falda Cienaga Formation comprising green-grey turbidites in outcrop, Permian Pataquia Formation, a red-bed sedimentary unit, and beige-green Eocene-aged Geste Formation of continental fluvial sediments.

The Carachi Pampa salt lake is rhomboidal in shape with a NW-SE long-axis, and covers a known surface area of about 135 km2. A Pliocene basaltic shield volcanic cone overlies the basin infill sediments with lave flow, scoria, and air fall basaltic debris, creating a veneer over the sediments and covering an area of approximately 70 km2.

To the south of the salar, ignimbrites, and unconsolidated pyroclastic sediments of the Cerro Blanco Pyroclastic Complex are thought to partially cover brine-saturated basinal sediments.


Mining Methods

  • Brine mining


Summary:

The conceptual mining method is recovering brine from the Salt Lake via a network of wells, the established practice on existing lithium and potash brine projects.


Crushing and Grinding


Processing

  • Lithium Carbonate Plant
  • Hydrochloric acid (reagent)
  • Reverse osmosis
  • Resin adsorption
  • Direct solvent extraction (DSX)
  • Sodium carbonate (reagent)
  • Ion Exchange (IX)

Flow Sheet: Subscription required

Summary:

The plant design targets production of 25,500 tpa of battery grade lithium carbonate through the treatment of brine with direct lithium extraction technology based on ion exchange (IX).

The purified lithium concentrate was reacted with sodium carbonate to produce lithium carbonate.

The flowsheet comprises two sections:
1. Direct lithium extraction as per Lilac Solutions Inc, uses ion exchange to produce a lithium enriched eluate;
2. Lithium carbonate plant converts the eluate into refined lithium carbonate.

Prior to direct extraction, the brine is extracted from the salar and piped to a brine storage pond. The brine is filtered to remove suspended solids, and then processed in the direct extraction plant, which recovers and concentrates lithium to an eluate stream using ion exchange. Lithium-depleted brine from the direct extraction plant is reinjected into the salar.

After direct extraction, the eluate stream is further concentrate ........

Recoveries & Grades:

CommodityParameterAvg. LOM
Lithium Recovery Rate, % 83.2
Lithium Head Grade, mg/L 250

Projected Production:

CommodityUnitsAvg. Annual
Lithium t 25,500
All production numbers are expressed as carbonate.

Operational Metrics:

Metrics
Annual production capacity  ......  Subscription required
Annual processing rate  ......  Subscription required
Annual brine extraction  ......  Subscription required
* According to 2020 study.
Subscription required - Subscription is required.

Reserves at November 27, 2018:
No cut-off grade has been applied.

CategoryTonnage CommodityGradeContained Metal
Indicated 650,000,000 cu. m Lithium 289 mg/L 188,000 t
Indicated 650,000,000 cu. m Potassium 5880 mg/L 3,500,000 t
Indicated 650,000,000 cu. m LCE 1,005,000 t
Indicated 650,000,000 cu. m KCl 6,705,000 t
Inferred 3,200,000,000 cu. m Lithium 209 mg/L 638,000 t
Inferred 3,200,000,000 cu. m Potassium 4180 mg/L 12,500,000 t
Inferred 3,200,000,000 cu. m LCE 3,394,000 t
Inferred 3,200,000,000 cu. m KCl 24,000,000 t
Total Resource 3,800,000,000 cu. m Lithium 211 mg/L 826,000 t
Total Resource 3,800,000,000 cu. m Potassium 4380 mg/L 16,000,000 t
Total Resource 3,800,000,000 cu. m LCE 4,400,000 t
Total Resource 3,800,000,000 cu. m KCl 30,700,000 t

Commodity Production Costs:

CommodityUnitsAverage
Cash costs Li2CO3 USD  ......  Subscription required *
Assumed price Li2CO3 USD  ......  Subscription required *
* According to 2021 study / presentation.
Subscription required - Subscription is required.

2021 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Total CapEx $M USD  ......  Subscription required
After-tax NPV @ 8% $M USD  ......  Subscription required
After-tax IRR, %  ......  Subscription required
After-tax payback period, years  ......  Subscription required
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Heavy Mobile Equipment:

Mine Management:

Job TitleNamePhoneEmailProfileRef. Date
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Jul 30, 2021
....................... Subscription required ....................... Subscription required Subscription required Nov 10, 2021
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Jul 30, 2021
....................... Subscription required ....................... Subscription required Subscription required Jul 30, 2021
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
Year-end Mineral Reserves 2018
Subscription required - Subscription is required.

News:

NewsDate
Lake Resources Increases Kachi DFS Lithium Production To 50,000 TPA January 19, 2022
Kachi Project Finance – Additional Export Credit Agency Support via Export Development Canada (“EDC”) September 28, 2021
Lake Resources NL: Kachi Project Finance – Strong Expression of Interest to Fund Project to approximately 70% of total Kachi Project funding requirements August 11, 2021

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