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Tanzania
Nachu Project

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 Location:
150 km NW from Mtwara, Tanzania

  Project Contacts:
House No. 19, Plot No. 890, Yacht Club Road Masaki PO Box 11085
Dar es Salaam
Tanzania
Phone  ...  Subscription required
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Graphite
Mining Method
  • Truck & Shovel / Loader
Processing
  • Flotation
Mine Life15 years (as of Jan 1, 2016)
The Nachu Project represents one of the largest Mineral Resources of large flake graphite in the world.


Owners

Source: p. 13,15
CompanyInterestOwnership
Magnis Energy Technologies Ltd. 100 % Indirect
The Nachu Graphite Project is shovel ready with a Special Mining Licence (SML) SML 550/2015 on the project granted by the Ministry of Energy and Minerals of Tanzania in September 2015. The SML was granted to Uranex Tanzania Limited (UTZ), a wholly-owned subsidiary of Magnis.

Deposit Type

  • Metamorphic


Summary:

The Nachu project is situated in graphitic schist with associated dolomites and gneisses.

The majority of EM modelling and geological intercepts indicate open folded anticlines with various dips to fold limbs in each resource Block.

The graphite mineralization is mostly associated with the schist, and is metamorphic (meta- sedimentary) in origin.

The Nachu deposit comprises five mineralized areas, being Blocks B, D, F, F South Limb, and J.

These deposit cover a combined strike length of 5.5 km and an average plan width of up to 300 m for B,D,J, F South and 800 m for F (often comprising multiple mineralized horizons separated by barren or low grade horizons), to depths between 150 m and 250 m below surface.

The mineralization occurs at or near surface.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Mine design, optimisation and mine production scheduling was undertaken by Orelogy Consulting Pty Ltd, specialist mining consultants based in Perth, Western Australia. The life-of-mine strip ratio is estimated at 1.5:1. Mining is set to be undertaken by the relatively conventional open pit mining method of drill, blast, shovel and truck. Base mine planning involves the use of 90 tonne excavators and 40 tonne articulated trucks. However ramp construction design parameters allow for the use of larger 90 tonne trucks.

Designs and cutbacks have been designed to suit 100t excavators and 91t payload rigid dump trucks.

- A minimum mining width of 20m.
- Two way ramp width of 24m.
- One way ramp width of 14m
- Ramp gradient of 10%.

Contract mining is assumed and rates were sourced from a number of suitably qualified and experienced contracting groups. It was stipulated that all supporting infrastructure will be supplied and mobilised by the selected contractor.


Crushing and Grinding


Processing

  • Flotation

Source: Subscription required

Summary:

The concentrator plant utilises crushing, grinding and flotation technology to produce 240 ktpa of concentrate at a grade of 98%Cg, at a maximum plant feed rate of 5Mtpa The concentrate will be transported via public roads to the port of Mtwara.

Metallurgical testing for the BFS centred on taking advantage of the size and quality of the graphite from the Nachu Project to generate high purity products using low cost milling and flotation operations. The metallurgical process that forms the basis of the processing plant design in the BFS consists of 1 rougher flotation step and 3 cleaner flotation stages with associated milling at each stage.

The absence of any chemical or thermal purification operations in generating high purity products will ensure products from Nachu will be competitive in the market place.

Three different high purity products are set to be produced at the Nachu Project site and these are targeted towards high growth downstream appli ........

Recoveries & Grades:

CommodityParameterAvg. LOM
Graphite Recovery Rate, % 92
Graphite Concentrate Grade, % 98

Projected Production:

CommodityUnitsAvg. Annual
Graphite kt 220
All production numbers are expressed as concentrate.

Operational Metrics:

Metrics
Stripping / waste ratio 1.5 *
Waste tonnes, LOM 115.5 Mt *
Ore tonnes mined, LOM 76.3 Mt *
Total tonnes mined, LOM 191.7 Mt *
Annual production capacity 240 kt of graphite concentrate *
Annual milling rate 5 Mt *
Annual ore mining rate 5 Mt *
* According to 2016 study.

Reserves at March 31, 2016:
Mineral Resource Cut-off of 3% graphitic carbon.

CategoryTonnage CommodityGradeContained Graphite
Proven 50.5 Mt Graphite 4.6 %
Probable 25.7 Mt Graphite 5.1 %
Proven & Probable 76.3 Mt Graphite 4.8 % 3.6 Mt
Measured 63.5 Mt Graphite 4.7 %
Indicated 61 Mt Graphite 6 %
Inferred 49.6 Mt Graphite 5.55 %
Total Resource 174 Mt Graphite 5.4 %

Commodity Production Costs:

CommodityUnitsAverage
Cash costs Graphite USD 559 / t *
Assumed price Graphite USD 2,350 / t *
* According to 2016 study / presentation.

Operating Costs:

Units2016
OP mining costs ($/t milled) USD 9.86 *
Processing costs ($/t milled) USD  ......  Subscription required
G&A ($/t milled) USD  ......  Subscription required
Total operating costs ($/t milled) USD  ......  Subscription required
* According to 2016 study.
Subscription required - Subscription is required.

2016 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Pre-Production capital costs $M USD  ......  Subscription required
Sustaining CapEx $M USD  ......  Subscription required
After-tax NPV @ 10% $M USD  ......  Subscription required
After-tax IRR, %  ......  Subscription required
After-tax payback period, years  ......  Subscription required
Subscription required - Subscription is required.

Proposed Heavy Mobile Equipment as of March 31, 2016:
HME TypeSizeQuantity
Excavator 90 t 1
....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 6, 2021
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
Feasibility Study Report 2016
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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