International Recycling Network of Mobile Phone in Asia Region

Metal Recovery from E-Waste, Poly- Metallic Material

October 31, 2006Masayuki Naka

DOWA ECO-SYSTEM CO., LTD.

Asia 3R ConferenceOct. 30 – Nov. 1, 2006

Tokyo, Japan

Constituents in E-Waste• Cadmium• Lead• Antimony• Arsenic• Mercury• Selenium• Fluorocarbons (CFCs, HCFCs & HFCs)• Brominated Flame Retardants

• Gold• Silver• Copper• Platinum

……..Etc.

0.003<0.011.4<0.010.020.3710017.22,300400MobilePhone

0.0230.0020.0110.0010.0030.4005011.32,400500SiliconAudio

0.014Tr.0.0010.0110.0010.0130.190306.9630100Video Cam.

<0.001

0.0010.005<0.001

0.0400.02045.6500170DigitalCamera

0.006<0.001

0.0080.0040.0040.14068.285040Tape Recorder

0.0100.0020.0030.0010.0020.18065.51,210130CD Player

<0.001

0.0020.022<0.001

0.0010.003108.71,400230MD Player

As%

Hg%

Cd%

Zn%

Se%

Bi%

Pb%

Pdppm

Cu%

Agppm

Auppm

Item

Metal Contents in Electronic Equipments

Potentiality of Nonferrous Metal Industry

• Complex contents in raw materials– Various elements (valuable metals and

impurities) in crude ore• Handling toxic substances in safety

– Valuable but toxic metals （ex. Pb、Cd）– Contents as impurities （ex. As）

Unique role in environmental management & recycling“The Anchor of Recycling” , “The Joint of Recycling Loop”Dowa’s Business Model: Integration between Metals Sector and Environmental Business Sector

Founded Incorporated Net sales: Net income Total assets

Main Businesses

DOWA’s Corporate Data

: September 18, 1884: March 11, 1937: JPY 316,388 million (as of FY2005): JPY 14,532 million (as of FY2005):JPY 309,315 million (as of end of FY2005)

Sales by Segment(Consolidated) FY 2005

Metal 40％

Eco19％

Heat11％

Elec33%

Others△3％

- Nonferrous Metals -Environmental Management and Recycling- Electronic Materials- Metal Processing- Heat Treatment

Waste ManagementSoil RemediationMetal Recycle, etc.

Personal ComputersPlasma TelevisionsMobile PhonesBatteries, Magnetic Recording Tapes, Automobiles, etc

Nonferrous MetalsNonferrous MetalsGold, Silver, Copper, Zinc, Platinum group metals, Gallium, Indium, etc.

Included in final Products

Overall Business Activities

Environmental Management & RecyclingEnvironmental Management & RecyclingDOWA ECO-SYSTEM CO., LTD.

Support of Sustainable Development through our Operations

DOWA METALTECH CO., LTD.

Metal ProcessingMetal Processing Heat treatment for automobile parts, Industrial furnace

Connector Materials,

Gallium LEDs, Silver Powder, Zinc Powder,

DOWA THERMOTECH CO., LTD

DOWA ELECTRONICS MATRIALS CO., LTD.

DOWA METALS &MINING CO., LTD.

Metal Recycling

Dismantle&

Shredding

Crushing&

Separation

PGM metalsPlatinumPalladiumRhodiumCatalyst

ASR

Automobile

Incinerator

Smelting

PC

Mobile Phone

Crushing & Separation Smelting

Dowa’s ActivitiesMarket

Gold

SilverCopperCircuit Board

TV Air conditioner

Refrigerator Washing Machine

Household Appliance

PCB

Button shaped batteries

E-waste RecyclingCrashed OA

Mobile Phone

Copper Smelter

Fly Ash Collector

Cu Refining

Precious Metal Plant

Lead Refinery

Roaster

Leaching Plant

Purification

Zn Refining Hematite Process

Cd Refining

Rare Metal Plant

Zn Ga In GeCd

Acid Plant

Pb Au Ag

E-Waste

Cu-Concentrate (Ore).Zn-Concentrate (Ore).

Cu

Dismantling, Crushing, Incineration, etc.

H2SO4

Process Flow of Dowa’s Smelter/Refineries Complex

Acid Plant

H2SO4Bi Sb Se Te Pt Pd RhNiSn

Difference between Hydro-Metallurgy and Dowa’s Technology

Base Metals,Precious Metals & Rare Metals

Precious Metalsonly

Recoveries

Integrated Smelter/Refineries

Cyanidation,Amalgamation orAcid Leaching

Key Process

Dowa’s TechnologyHydro-Metallurgy

Dowa’s Overseas Activitiesin Metal Recycling

• China: Dowa Environmental Management Co., Ltd.– Recovering Precious Metals from E-Wastes

• USA: Nippon PGM America Inc.– Pre-treatment & Shipping Centre for Catalysts of ELV

• Singapore: Eco-system Japan Co., Ltd. Singapore– Collecting and Shipping Centre for E-Wastes

Pilot Project to Establish Scheme for Collectionand Movement of E-Waste from SE Asia to Japan

• Stage1 (FY2006)– Study on the pilot scheme with a fund of JPY10M contributed by

DOWA • Stage2 (FY2007)

– Implementation of the pilot scheme utilizing outcome of stage1

• Objective: – To establish collecting scheme of end of life mobile phones

generated in Malaysia, Singapore and Thailand through a collaboration of relevant authoroties

– To establish transboundary movement scheme of the mobile phones from those countries to Japan

– To investigate the possible application of those schemes to e-wastes other than mobile phones

International Recycling Network of Mobile Phone in Asia Region

Thailand, Malaysia, SingaporeCollection in

Recycling in JAPAN

End of lifeMobile phones

Dowa’s Smelter

Performing by DOWA

transport