www.exxaro.com

Exxaro FerroAlloys Ferrosilicon FeSi15

CONTENTS

Exxaro Resources Limited 5

Exxaro FerroAlloys 5

Certification 7

Production process 9

Quality characteristics 10

Benefits of Exxaro FerroAlloys ferrosilicon 11

Location 12

Contact details 13

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Exxaro rEsourcEs LimitEd

Exxaro is one of the largest and foremost black-owned South

Africa-based diversified resources companies, with current

business interests in coal, iron ore and ferroalloys, titanium

dioxide pigments and chemicals in South Africa and Australia.

Exxaro had a market capitalisation of US$1.65bn as at 30 June

2016.

Exxaro is among South Africa’s largest coal producers and is

the largest supplier to Eskom, South Africa’s national electricity

utility, with long-term contracts. Exxaro’s strategy will develop

the company along the electricity value chain within the

African continent. Exxaro is listed on the Johannesburg

Stock Exchange (JSE) and has been included in the FTSE/JSE

Responsible Investment Index since 2015.

Exxaro FErroaLLoys

Exxaro’s FerroAlloys ferrosilicon plant was established in

1996. Two new plants were commissioned in 2014 and 2016

respectively in order to guarantee supply of up to 12 000

tonnes of superior quality gas atomised and milled ferrosilicon

(FeSi) per annum.

Over the last two decades, Exxaro has developed two ground-

breaking processing technologies aimed at improving

beneficiation processes and the recovery of mineral products

from low grade stockpiles, in-situ resources and waste dumps in

order to overcome global mining challenges such as depleting

reserves and resource quality issues.

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cErtiFication

Exxaro FerroAlloys is ISO 9001, ISO 14001 and OHSAS 18001 certified and adheres to

strict control measures to ensure compliance with all quality, environmental and health

and safety standards. In the six years since the original certification, Exxaro FerroAlloys

has successfully met the criteria of surveillance and recertification audits conducted by

an external certification body.

A key component of both the Ultra High Dense Medium Separation (UHDMS)

and Ultra Fine (UF) processing technologies is the high-quality gas atomised

ferrosilicon produced at Exxaro FerroAlloys.

Early commercialisation projects were conducted successfully in the iron

ore industry with the support of Kumba Iron Ore, where Exxaro holds a 20%

shareholding in its subsidiary, the Sishen Iron Ore Company. The UHDMS and

UF processes are currently being commercialised across a number of other

commodities with the intent of growing the market. The production of FeSi is

therefore critical to Exxaro’s long-term growth and investment strategies.

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Production ProcEss

Ferrosilicon powder is made by melting a fixed ratio of high

purity iron and crude ferrosilicon in an induction furnace. The

molten metal is then atomised using a high pressure stream of

inert nitrogen gas to produce a high-grade ferrosilicon powder

with a silicon content varying between 14-16%, known as FeSi

15.

Exxaro FerroAlloys produces gas atomised and milled FeSi of

various particle size distributions and can tailor production to

produce FeSi for most application requirements.

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High particle density range of particle size distributions

spherical shape (Gas atomised Fesi)

• Enables preparation of low viscosity mediums at high density

• Special coarse to fine

• Enables FeSi product selection suited to the density range required

• Results in low medium viscosity even when high separation densities are required

• Leads to lower particle misplacement and higher separation efficiency

superior magnetic properties/susceptibility

High corrosion resistance

High medium stability

• Enables unrivalled recovery of FeSi using LIMS (Low Intensity Magnetic Separator)

• Results in significantly lower medium losses and lower FeSi consumption

• Leads to lower operating costs

• Results in improved medium stability

• Reduces FeSi consumption

• Leads to lower operating costs

• Lower risk of H2 (Hydrogen)

gas evolution

• Exxaro FerroAlloys FeSi is a stable dense medium with correct application

• Results in good separation efficiency

technical support for customers

Packaging transport

• The Exxaro team possesses extensive experience and knowledge in mineral processing

• Technical support is available to all customers

• All packaging used for the FeSi is safe, water resistant, durable, stackable and biodegradable

• Customers can choose between 1 tonne bulk bags or 50 kg bags

• 1 tonne bulk bags have a bottom discharge for ease of handling

• Transportation can be arranged if required

QuaLity cHaractEristics

Exxaro FerroAlloys FeSi has

superior qualities with respect

to physical properties such

as sphericity, homogeneity,

degradation resistance, specific

gravity, corrosion resistance and

magnetism.

The production process guarantees

that each FeSi particle is

consistently small, solid and dense

to ensure superior performance

as a dense medium compared

to conventional atomisation

methods using water/steam. The

superior physical properties of the

Exxaro FerroAlloys FeSi results in

enhanced rheological properties

for beneficiation through dense

medium separation.

BEnEFits oF Exxaro FErroaLLoys FErrosiLicon

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Location

The Exxaro FerroAlloys ferrosilicon plant is situated in the province of Gauteng at

20 Roger Dyason Road, Pretoria West, 0001, South Africa.

GPs coordinates: 25°45’57.8”S 28°08’35.8”E

contact dEtaiLs

Hensa van Wyk

Specialist Marketing

Tel: +27 12 307 3489

Fax: +27 12 307 7157

E-mail: Hensa.vanWyk@exxaro.com

neels Potgieter

Manager, Ferrosilicon Operations

Tel: +27 12 307 8385

Fax: +27 12 307 7157

E-mail: Neels.Potgieter@exxaro.com

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