www.eisenmann.com© Eisenmann

11/1/16 / Eisenmann business presentation 2.0.1

TREATMENT OF WASH WATER FROM COPPER SMELTERS:RECOVERY OF COPPER AND ACID, MINIMIZING SLUDGE AND CHEMICALS

Paul Nador, Jochen Schumacher, Angela Ante

TRATAMIENTO DE EFFLUENTES PROVENIENTES DE LA LIMPIEZA DE GASES EN PLANTAS DE ACIDO SULFURICO DE FUNDICIONES DE COBRE:

RECUPERACIÓN DE COBRE Y ACIDO SULFURICO, MINIMIZANDO LOS DEPOSITOS SOLIDOS Y LA CONSOMACION DE CHIMICOS

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Empresa EISENMANN

§ Very solid financial situation§ Sustainable and successful business strategy§ Growing share of employees in the emerging markets – focus on growing markets and expansion of the global

added value chain

2013* 2014** 2015**

Turnover (in million €) 774.9 763.4 907.2

Order Intake (in million €) 791.0 836.0 1.020.0

EBT (in million €) 21.1 28.6 34.5

Equity (in million €) 204.9 201.7 205.5

Equity ratio (in %) 37.1 35.7 34.8* accounted under German commercial code (HGB), ** accounted under IFRS

Financial Key Figures Eisenmann Group

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Locations

Paris

São Paulo

Fuzhou

Kunshan

Shanghai

CruzeiroChennai

DelhiThane

Country with Eisenmann location

Country with Eisenmann sales representatives

Changchun

Pune

Moscow

Saronno

GöttingenBöblingen

HolzgerlingenErftstadt (intec)Stafford

BarcelonaMinneapolis

Puebla

Crystal Lake

Togliatti

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Application, robotics, paint supply

Classic customer service, plant modernization and optimization, customized solutions, full service, BOT models

Service portfolio

Paint shops for metal components for automotive OEMs and suppliers, systems for coating aluminium wheels, paint shops for metal components in general manufacturing, painting systems for components made of plastic or advanced materials

GENERAL FINISHING

Heat treatment plants from automotive lightweight materials, production of carbon fibers, high-temperature plants for high-performance ceramics, enameling systems as well as pretreatment & coating systems

THERMAL SOLUTIONS

Complete solutions for intralogistics, electrified monorail systems, RGV conveying systems, LogiMover

CONVEYOR SYSTEMS

SERVICE

Surface finishing, end assembly lines, conveyor system for shell constructionAUTOMOTIVE SYSTEMS

Exhaust air purification, waste water treatment, waste disposal and recycling, munition disposal, biogas plants, energy from biomass

ENVIRONMENTAL TECHNOLOGY

APPLICATION & ROBOTICS

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Treatment of toxic and persistent organic compounds, cyanide, phosphonic acids, arsenate

Eisenmann Environmental Technology – Overview

EXHAUST AIR PURIFICATION

All exhaust air purification processes from one source

WATER TREATMENT & WASTE WATER TREATMENT

Waste water treatment and process water treatment; the correct process

for every single application

WET CHEMICAL OXIDATION

Turn-key systems for the disposal of conventional and chemical combat

agents

WASTE DISPOSAL & RECYCLING

All processes for the thermal disposal of waste material and

recycling

Production of electricity, purified biogas and heat from organic waste

material

BIOLOGICAL TREATMENTMUNITION DISPOSAL

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Environmental Technology – Water

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Weak Acid Treatment in Copper Smelters

Washing Catalyst(SO2 → SO3)

Absorption Sulphuric Acid96-98 %

Weak Acid 5 – 45 %

Acid Content

Effluent All Soluble Substances, SO3, Volatile Heavy Metals, Cu, As

Process Gas from Smelter

SO2, SO3, Volatile Heavy Metals, Cu, As

Gas Phase SO2

Gas Phase SO3

Tratamiento de Acidos Débiles de Plantas de Acido Sulfurico en Fundiciones de Cobre.

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Weak Acid Treatment in Copper Smelters

H2SO4 Concentration: 5-45 %

Cu-Concentration: 0.3-10 g/L

As-Concentration: 1-18 g/L

Other Heavy Metals: Fe, Zn, Cd, Mo, Pb

Tratamiento de Acidos Débiles de Plantas de Acido Sulfurico en Fundiciones de Cobre.

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Hydroxide Precipitation – Milk of LimePrecipitación Hydroxide – Leche de Cal

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Fate of Wash Water Ingredients during Hydroxide Precipitation

H2SO4 Concentration: 5-45 % Gypsum - Yeso

Cu-Concentration: 0.3-10 g/L Cu(OH)2

As-Concentration: 1-18 g/L Fe(AsO3)

Other Heavy Metals: Fe, Zn, Cd, Mo, Pb M(OH)x

Destino de los Sustancias Mientras Precipitación Hydroxido

Producto de la precipitación hydroxido: Yeso contaminado de arsénico y metales

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Sulfide Precipitation – NaSHPrecipitación Sulfurado – Sodio hydrogen sulfuro

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Laboratory Scale Experiments

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Weak Acid Treatment in Copper Smelters

H2SO4 Concentration: 5-45 %Recycable Fraction Value: 20-50 US$/t

Cu-Concentration: 0.3-10 g/L Recycable Fraction Value: 500-2.000 US$/t

As-Concentration: 1-18 g/LWaste Fraction Disposal Cost: 10 -280 US$/t

Other Heavy Metals: Fe, Zn, Cd, Mo, PbRecycable Fraction/ Waste Disposal Cost: 10-280 US$/t

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Sulphide precipitation – Recovery of Acid and Copper

Copper recycling

Cu-Content : 90-100 % of Load

As-Content : 0-10 % of Load

Output :Cu-Content : ≈ 40 % DS

Note: Cu in Cu-Ore : 1,5 – 3 % (or less)

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Sulphide precipitation – Recovery of Acid and Copper

Precipitación Sulfurado – Recuperación de Acido Sulfurico y Cobre

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Sulphide precipitation – Recovery of Acid and Copper

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Comparision of operation costs:

Reduction of sludge volumeHydroxide precipitation 20,000 tons/aSulfide precipitation 1,100 tons/aDifference 18,900 Tons/a

Annual savings for disposal (150 USD/t) 2.84 Mio USD

Reduction of costs for chemicalsHydroxide precipitation 5,000 tons/a Ca(OH)2 @ 200 USD/tSulfide precipitation 260 tons/a NaSH @ 800 USD/t

Annual savings for chemicals 0.79 Mio USD

Debit: 4 ton/h, 20% Acido, 2 g/L cobre

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Comparision of operation costs:

Recovery of Copper Copper (100%) 165 tons/a

Annual savings (1500 USD/t) 0.25 Mio USD

Recovery of Acid Sulfuric Acid 33,600 tons/a

Annual savings (20 USD/t) 0.67 Mio USD

Total Annual Savings: 4.55 Mio. USD

Debit: 4 ton/h, 20% Acido, 2 g/L cobre

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• Reduction of sludge and chemicals of more than 90 %

Reducción de lodos y de consomación de chimicos de más de 90 %.

• Recovery of sulfuric acid for leaching applications

Recuperación de acido sulfurico por procesos de lixiviación.

• Polishing of sulfuric acid by nanofiltration

Limpieza de acido sulfurico implatando filtración nano

• Recovery of copper

Recuperación de cobre

Precipitación Sulforado – Recuperación de Acido Sulfurico y Cobre

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• High flexibility: System consists out of different bricks:

Alta flexibilidad: Systema consista de modulos distintos:

1. Sulfide precipitation – precipitación sulfurido

2. Acid polishing step – limpieza de acido sulfurico

3. Copper recycling step – recuperación de cobre

4. Copper polishing step by pretreatment – alejamiento de polvos

Precipitación Sulforado – Recuperación de Acido Sulfurico y Cobre

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Eisenmann References CP

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Contacto

Jochen Schumacher

SalesEnvironmental Technology

Phone: +49 7031 78-2830E-Mail: jochen.schumacher@eisenmann.comDaimlerstraße 6, 71088 Holzgerlingen, Germany

Paul Nador

Sales ChileEnvironmental Technology

Phone: +56 2 2242 3689E-Mail: nador@mi.clSantiage de Chile