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Australia
Sconi Project

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 Location:
200 km W from Townsville, Queensland, Australia

  Project Contacts:
Level 34, 1 Eagle Street
Brisbane
Queensland, Australia
4000
Phone  ...  Subscription required
Fax+61-7-3341-4581
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  • Overview
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  • Geology
  • Mining
  • Processing
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  • Costs & Financials
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  • Filings & News

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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Nickel
  • Cobalt
  • Scandium
Mining Method
  • Truck & Shovel / Loader
Processing
  • Sulfuric acid (reagent)
  • Hydrometallurgical plant / circuit
Mine Life30 years (as of Jan 1, 2019)
Latest NewsQLD backs Australian Mines for Sconi project developmet     July 27, 2020


Owners & OPERATOR

 
CompanyInterestOwnership
Australian Mines Ltd. 100 % Indirect
Sconi Mining Operations Pty Ltd. (operator) 100 % Direct

Deposit Type

  • Laterite


Summary:

The Sconi deposits are hosted in laterites which have formed on ultramafic rocks that include serpentinites, meta-gabbros and pyroxenites. These occur as lower crustal material rich in iron, magnesium and nickel. It is likely that these laterites formed following a period of prolonged weathering post the Cretaceous era.

Ultramafic rocks have a high background level of nickel and cobalt and the process of lateritisation has concentrated the nickel and cobalt to grades which have the potential to be exploited economically.

The laterite profiles are well preserved with the drill holes intersecting a complete laterite profile, from natural surface soil cover down to poorly mineralised bedrock. Each deposit varies with respect to geological profile and mineralisation, with Kokomo and Lucknow enriched in scandium, while Greenvale appears less enriched in scandium.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Sconi Project spans three Mining Licence areas (ML 10368, ML 10366, and ML 10342) which are Greenvale, Lucknow and Kokomo respectively. The mining operation will be centred at the Greenvale site. Lucknow is located approximately 10 kilometres to the south-east with access via the Gregory Highway, while Kokomo is located approximately 60 kilometres to the north-northeast of Greenvale.

An unsealed haulage road will be constructed to connect Kokomo to the processing facility at Greenvale. Conventional open pit mining is planned for the operation at the three sites utilising a mining contractor model. The ore production schedule assumes Greenvale and Lucknow are operated as one mining area and Kokomo as a separate area. The schedule indicates that mining will be split between both areas and operated simultaneously, thereby requiring two mining fleets.

At Greenvale, ore will be delivered from the pits to a Run-of-Mine (ROM) pad adjacent to the primary crushing circuit. Ore from both Lucknow and Kokomo will be delivered to local ROM pads from where it will be loaded into road trains and transported to the Greenvale site.

The road trains will discharge their load into a purpose-built hopper bin where the ore will be crushed and processed directly or diverted to a storage stockpile on the upper level of the Greenvale ROM pad for rehandling.

Economic recovery of valuable metals requires optimised acid dosing in the Sconi project and to enable consistent acid-dosing and recovery a consistent feed blend of ore is desirable, which will be managed through stockpiling and ore blending. Operationally, the Project will use a stockpile finger blend strategy, where the ore is fed to the crusher from multiple fingers on a ROM stockpile using a front-end loader for material from Greenvale and a road train schedule for ore from Lucknow and Kokomo.

Waste material from the mine will generally be dumped onto designed waste rock dumps or backfilled into pits with a proportion of the waste mined at Greenvale used to construct embankments for the dry stacked tailings storage facilities.

Rehabilitation works will be carried out on an ongoing basis as part of the mining operation.


Crushing and Grinding


Processing

  • Sulfuric acid (reagent)
  • Hydrometallurgical plant / circuit

Flow Sheet: Subscription required

Summary:

The Sconi Project uses a hydrometallurgical route for processing nickel and cobalt ore through to battery-grade nickel sulphate and cobalt sulphate with scandium recovery and production of high-purity scandium oxide.

The proposed process flow comprises the following key unit processes:

• Stage 1 – Leaching. Aqueous pressure leach in an acidic sulphate medium to dissolve the base metals while minimizing dissolution of the iron and silica gangue. The conditions used are typical for base metal dissolution from lateritic ores sources, with rapid leach kinetics resulting in autoclave residence times of ~60 minutes for near complete nickel and cobalt extraction. The leach discharge slurry proceeds to neutralization for removal of the free acid, iron and aluminium. The neutralised slurry is filtered and washed to separate the valuable metal in solution from the residue solids. The solids are conveyed for dry stacking.

• Stage 2 – Sulphide Precipitation. The fi ........

Recoveries & Grades:

CommodityParameterAvg. LOM
Nickel Recovery Rate, %  ......  Subscription required
Cobalt Recovery Rate, %  ......  Subscription required
Subscription required - Subscription is required.

Projected Production:

CommodityProductUnitsAvg. AnnualLOM
Nickel Sulphate kt 471,405
Cobalt Sulphate kt  ......  Subscription required  ......  Subscription required
Sc2O3 Crystals t  ......  Subscription required

Operational Metrics:

Metrics
Stripping / waste ratio  ......  Subscription required
Annual processing rate  ......  Subscription required
* According to 2019 study.
Subscription required - Subscription is required.

Reserves at June 13, 2019:

CategoryTonnage CommodityGradeContained Metal
Proven 8.08 Mt Nickel 0.72 %
Proven 8.08 Mt Cobalt 0.09 %
Proven 8.08 Mt Scandium 44 ppm
Probable 49.22 Mt Nickel 0.55 %
Probable 49.22 Mt Cobalt 0.08 %
Probable 49.22 Mt Scandium 33 ppm
Proven & Probable 57.3 Mt Nickel 0.58 %
Proven & Probable 57.3 Mt Cobalt 0.08 %
Proven & Probable 57.3 Mt Scandium 35 ppm
Measured 8.27 Mt Nickel 0.75 % 62,221 t
Measured 8.27 Mt Cobalt 0.09 % 7,725 t
Measured 8.27 Mt Nickel Equivalent 1.05 % 87,044 t
Indicated 49.24 Mt Nickel 0.6 % 295,736 t
Indicated 49.24 Mt Cobalt 0.08 % 39,946 t
Indicated 49.24 Mt Nickel Equivalent 0.85 % 420,532 t
Inferred 18.2 Mt Nickel 0.54 % 97,622 t
Inferred 18.2 Mt Cobalt 0.05 % 9,486 t
Inferred 18.2 Mt Nickel Equivalent 0.66 % 120,378 t
Total Resource 75.71 Mt Nickel 0.6 % 455,579 t
Total Resource 75.71 Mt Cobalt 0.08 % 57,157 t
Total Resource 75.71 Mt Nickel Equivalent 0.83 % 627,954 t

Commodity Production Costs:

CommodityUnitsAverage
Credits (by-product) Nickel USD  ......  Subscription required *
C1 cash costs Nickel USD  ......  Subscription required *
C1 cash costs Nickel USD  ......  Subscription required *†
Assumed price Sc2O3 USD  ......  Subscription required *
Assumed price Cobalt USD  ......  Subscription required *
Assumed price Nickel USD  ......  Subscription required *
* According to 2019 study / presentation.
† Net of By-Product.
Subscription required - Subscription is required.

2019 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Pre-Production capital costs $M USD  ......  Subscription required
Gross revenue (LOM) $M AUD  ......  Subscription required
After-tax Cash Flow (LOM) $M AUD  ......  Subscription required
Pre-tax NPV @ 8% $M AUD  ......  Subscription required
After-tax NPV @ 8% $M AUD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
After-tax IRR, %  ......  Subscription required
Pre-tax payback period, years  ......  Subscription required
After-tax payback period, years  ......  Subscription required
Subscription required - Subscription is required.

Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 27, 2021
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
Subscription required - Subscription is required.

News:

NewsDate
QLD backs Australian Mines for Sconi project developmet July 27, 2020
Australian Mines to appoint engineering contractor by 2020 July 15, 2020
Australian Mines moves $1.3bn Sconi project to next step November 21, 2018

Aerial view:

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