Nippon Denko Co., Ltd.
Company ProﬁleP r esi d e n t' s M e s sa g e
N et w o r kConten t sContributing to the Growth of Society
Through Our Four Core Businesses▶Hidaka Oﬃce

▶Horomangawa Hydroelectric Power Plants
Electric power▶Toyama Plant (Imizu Area)
Main businessNippon Denko group has consistently manufactured
various ferroalloys since its
Ferroboron
foundation. In the ferroalloy business, which is thefoundation of our business, we haveconcentrated our management resources on high-carbon ferromanganese and pursued
cost reductions to the utmost limit. As a result, we now maintain a high level ofinternational competitiveness and meet the requirements of the world’s highest
environmental standards, which is a great strength of our group.
▶ (Takaoka Area)
Main businessWe have also focused on and steadily developed
our Functional materials business andCathode materials for lithium-ion batteries

Environmental business, which expect to generate stable earnings. Furthermore, we haveadded the hydroelectric power generation business as one of our core businesses▶Tokushima Plant
striving to further enhance our corporate value by building a more stable earnings

2▶3Ferroalloys Business

4▶5Functional Materials Business

6▶7

Environmental Business8▶9Electric Power Business

10Research and Development

11

Human Resources Development

Main businessstructure(High-carbon
through thesefour corebusinesses.
Ferroalloys
ferromanganese,SLP
ferromanganese)

12▶13 Network

Functional
Materials are(Zirconiumoxide, Boronoxide),inFertilizer
Our products
not directly
visibleour everyday lives, but all of them are useful invarious ﬁelds as essential materials developed with our proprietary technologies.
▶R&D Laboratory
We will work to maximize our group’s strengths, use the management resources to theirfullest, and resolutely strive to resolve the various management issues. Along with these,▶Myoko Plant
Main business
Functional Materials (Metal hydride alloys,
Cathode materials for lithium-ion batteries,
Manganese inorganic chemical products)

we will continue to tackle the challenges of our future through the stable supply ofhigh-quality products, the development of new technologies, and the delivery of newproducts.
▶Koriyama Plant▶Head Oﬃce (Tokyo)

Main business
Treating wastewater containing chromic acid, boron,nickel, ﬂuorine etc., and pure water production equipment▶Osaka Oﬃce

President

Yasushi Aoki

▶Chuo Denki Kogyo Co., Ltd.
Main businessMelting and solidiﬁcation of incineration ash▶Kashima Oﬃce
1213

High-carbon ferromanganeseMedium-carbon ferromanganeseF e rro a l l o y s
Bu sin e ss
Responsibilities as theleading manufacturer■ Feature

Essential for strengthening steel■ Application

Used as an additive, desulfurizing agent formolten steels

Low-carbon SLP ferromanganese■ Feature

Ferromanganese

Boasts higher manganese content thanstandard ferromanganese with lower carbon
and phosphorus contents

Ferroalloys are the most important materials■ Applications

due to their use as additives to all steel toUsed mainly as an additive for high-quality

improve the properties such as strength,

steelstoughness, heat resistance, andanti-corrosiveness.
Although we rarely see it in everyday life
directly, ferroalloys are one of the materials
that are indispensable for an aﬄuent life. In
particular, high-carbon ferromanganese, themain product of Nippon Denko Group, is an
essential material for major steel products suchas automobiles, ships, railways, and buildings.
With our production bases in Tokushima andSilicomanganese■ Feature

A composite alloy mainly made of silicon andmanganese

Low-carbon SLP ferromanganese■ Applications

Used as a manganese- and silicon-based
additive, deoxidizing agent or desulfurizing
agent for molten steels

Malaysia, we harness our proven technologies
and time-tested techniques to provide ourcustomers with stable supplies of high-quality
manganese. Our portfolio includes not onlyFerrosilicon■ Feature

ferromanganese but also other ferroalloy

Used broadly for steels in large quantities andproducts. These quality products have been

generate a large amount of heat during

well received by our customers, sustaining ouroxidation without substantially lowering its

reputation as a leading manufacturer oftemperature of the molten steels

ferroalloys.

■ Applications

Silicomanganese

Used as a deoxidizing agent for steel
In this way, Nippon Denko Group isproduction, silicon additive or casting adhesive

supporting people’s daily lives throughferroalloys.
OthersFerrovanadium
High-carbon ferrochromium
Ferroniobium
Ferrosilicon23

■ Zirconium oxide
Zirconium oxide is used as material for

F u n cti o n a l
Ma te ri a l s
Bu si n e ss

electronic parts that support IT devices andcontributes to their high functionality.

■ Ferroboron
As the only ferroboron manufacturer in Japan,
we support our customer’s stable supply.

■ Metal hydride alloys

Technology tocreate the future

Zirconium oxide

Metal hydride alloys are distinct from otheralloys for their ability to occlude and releasehydrogen and are used in the anode materialsof nickel-hydrogen secondary batteries. We are
the world’s biggest supplier of metal hydride

We produce unique, high-performance,alloys for nickel-hydrogen batteries of HVs.

high-quality materials that are used inelectronic parts and batteries, etc. on thestrength of our long-cultivated electric furnace
operation technologies.
Our functional materials are used in a
number of advanced materials, including
zirconium oxide and manganese inorganic
chemical products for electronic parts, cathodematerials for the lithium-ion batteries of EVs,

■ Cathode materials for lithium-ion batteries
Lithium-ion batteries have high energy density
and are widely used in applications from EVs tomobile devices. We use the technicalcapabilities we have amassed over more thanFerroboron

two decades of mass-producing cathodematerials for lithium-ion batteries to satisfy ourcustomers’quality standards.

metal hydride alloys for HVs, and ferroboron
for high-eﬃciency transformers, thus
contributing to the realization of a sustainable
society and supporting our daily lives.

■ Manganese inorganic chemical products
These are used in a wide variety of
applications and provide essential support to
the Japanese industry as we are the only
manufacturer of manganese sulfate andmanganese carbonate in Japan.

Metal hydride alloys■ Boron oxide
As the only manufacturer of boron oxide inJapan, we provide high-quality, high-purity
products with minimal impurities.

Cathode materials for lithium-ion batteries

45

■ Environmental Systems BusinessWe contribute to the achievement of arecycling-based and decarbonized society byEnvironment
Bu si n e ss

providing wastewater treatment equipment that
puriﬁes and recycles wastewater and utilizes

Wastewater treatment equipment

technology to recover valuables and recycle
resources to promote water and resource
recycling, in addition to a pure waterproduction system that supplies the high-purity
water indispensable for hydrogen production.

Meeting the needs forthe recycling society

1. Wastewater treatment equipment

By recovering metals and impurities inwastewater, we can reuse them as deionizedand pure water. In addition, we are working
to recycle boron, nickel, and other materials

To meet the needs of the recycling society,
Nippon Denko Group is engaging in theenvironmental systems business to protect
limited water and resources by recycling
wastewater, recovering valuable resourcesfrom wastewater, and producing pure water,collected at our recycling plants.
2. Pure water production system

The demand for high-purity water for
cleaning, mixing, inspecting, and other uses is
expanding in various ﬁelds. To meet thisgrowing demand, we provide our customers

and the melting and solidiﬁcation incineration

with AQUA PACK and MR PACK.

ash business to treat incinerated ash

Our AQUA PACK pure water production

generated from municipal waste facilities bysystem is a simple cartridge-type packed

melting at high temperatures to makedetoxifying and recycling it as ECOLAROCK(air-cooled eco-friendly slug).

AQUA PACK (Cartridge demineralizer)

with ion-exchange resin. It is capable ofcreating high-purity water by removing Ca,Na, SO4, Cl, SiO2, and other chemicals fromtap water.
Our MR PACK is a pure water production
system with reverse osmosis (RO)membranes paired with an ion-exchange
resin tower in one unit. We can gain
high-purity water close to theoretical-purewater by ﬁltering tap or well water throughour MR PACK.

■ Melting and Solidiﬁcation of Incineration
Ash BusinessCurrently, most incineration ash generated bymunicipal waste facilities is disposed in

MR PACK (Pure water production system)

landﬁlls. As a result, the valuable resources
contained in the ash are not reused, and there
are also concerns that it would be diﬃcult tosecure new landﬁll sites.
To solve these problems, Chuo Denki Kogyo
Co., Ltd., our wholly owned subsidiary, melts
and solidiﬁes this incineration ash using
dedicated electric furnaces and recycles theslag (ECOLAROCK) and valuable metals
produced as resources, achieving a perfect
ECOLAROCK（Laying material for solar panel installation)

recycling business and contributing sustainable

Molten metals containing valuable metals

development goals (SDGs).
In addition, by melting incinerated ash at hightemperatures, dioxin is decomposed and heavy
metals are detoxiﬁed and stabilized, helping to

6protect the environment.

7

Electric PowerBu si n e ss
Green energy
Hydroelectric No. 2 Power Plant

We have two hydroelectric power plants in
the Horomangawa River System located in theHidaka region of Hokkaido, and the facilities
have been approved for the Feed-In Tariﬀ (FIT)
system for renewable energy.

Horomangawa Hydroelectric Power Plant

Hydroelectric power generation has a highproﬁle as a renewable green energy sourcewith no CO2 emissions.
The Horomangawa River system is located in

Horomangawa
Hydroelectric No. 2 Power Plant■ Establishedthe rich natural environment of the Mt. Apoi

November 1940

Geopark―a UNESCO Global Geopark―in the■ Started operation under FIT system

town of Samani.

November 2017

By engaging in renewable green power
generation business with environmentally■ Output

4,406kW
Hydroelectric No. 3 Power Plant

conscious, we will secure stable earnings andcontribute to society by supplying electricity toneighboring communities.

Horomangawa
Hydroelectric No. 3 Power Plant■ Established

September 1954
■ Started operation under FIT systemFebruary 2019
■ Output

6,221kWNo. 2 Power Plant Dam
Horomanagawa No. 3 Power Plant Dam

89

Research andDe v e l o p me n t
Further innovation andcreation of technology
Drawing from years of business activities inHuman
Resources
Development
The Nippon Denkoof tomorrowmetal reﬁning and chemical production
technologies, we apply a ﬂexible outlook and aWe view the development of humanfund of creativity to pursue basic andresources as an important initiative for theexploratory research, product development,

future growth of Nippon Denko Group, and weand process development in the Ferroalloys

are committed to recruiting and training humanand Functional Materials businesses.

resources as management resources.

We also strive to develop environmental
technologies that will promote the recycling ofresources and the preservation of the earth’senvironment.
To meet the ever-diversifying and advancing
needs of society and rapid changes in themarket environment, the Nippon Denko Grouphas been adapting a R&D system that enables
the quick and eﬀective generation of newtechnologies and products through robust
collaboration between its two constituent

Hiring activities
We seek out humanresources who can carry
Nippon Denko Group into thefuture ー indivisuals capableof adapting to thesophistication, mobilization,specialization, globalization,
and acceleration of industrial
society.

groups―a New Product and New BusinessGroup that anticipate customers' needs andexplores research topics and a ResearchGroup that carries out R&D―and the plantsthat quickly apply the outcomes of thedevelopment. Moreover, ｗe are strengthening

Human resources
development

collaboration with universities and research
institutes with outstanding technology and weare pushing forward speedy and timely R&D
such as promoting joint research projects.

R&D organization■ R&D Laboratory（Anan, Tokushima）

10

Through a broad range oftraining programs, including
programs for new hires,trainings for speciﬁc job
tiers, overseas
language-study programs,
and specialized external anddistance learning programs,
we strive to train humanresources who can serve asvital management resources.

11

P r esi d e n t' s M e s sa g eNetNetwwoorkrk
Contributing to the Growth of Society
Through Our Four Core Businesses▶Hidaka Oﬃce
▶Horomangawa Hydroelectric Power Plants
Electric power

Plant Plant(Imizu Area)▶Toyama▶Toyama(ImizuArea) ferroalloys since its
Main businessNippon Denko group has consistently manufactured
various
Main businessFerroboron
foundation. In the ferroalloy business, which is thefoundationof our business, we have
Ferroboron

concentrated our management resources on high-carbon ferromanganese and pursued
Boron oxide

cost reductions to the utmost limit. As a result, we now maintain a high level of(Takaoka Area)

international competitiveness and meet the requirementsof the world’s highest
Main business
Cathodematerials forenvironmental standards, which is a great strength of
our group.
lithium-ionbatteriesArea)▶ (Takaoka
Main businessWe have also focused on and steadily developed
our Functional materials business andCathode materials for lithium-ion batteries

Environmental business, which expect to generate stable earnings. Furthermore, we haveadded the hydroelectric power generation business as one of our core businesses
Tokushima PlantPlant▶
▶Tokushima
striving to further enhance our corporate value by building a more stable earnings
Main businessstructure(High-carbon
through thesefour corebusinesses.
Low-carbon
SLP ferromanganese)
Ferroalloys
ferromanganese,SLP
ferromanganese)oxide)inFertilizer
Functional
Materials are(Zirconiumoxide, Boronoxide),
Our products
not directly
visibleour everyday lives, but all of them are useful invarious ﬁelds as essential materials developed with our proprietary technologies.
R&D Laboratory
Laboratory▶
▶R&D
We will work to maximize our group’s strengths, use the management resources to theirfullest, and resolutely strive to resolve the various management issues. Along with these,▶Myoko Plant
Main business
Functional Materials (Metal hydride alloys,
Cathode materials for lithium-ion batteries,
Manganese inorganic chemical products)

we will continue to tackle the challenges of our future through the stable supply ofhigh-quality products, the development of new technologies, and the delivery of newproducts.
▶Koriyama Plant▶Head Oﬃce (Tokyo)

Main business
Treating wastewater containing chromic acid, boron,
nickel, ﬂuorine etc., and pure water production equipment▶Osaka Oﬃce

President

Yasushi Aoki

▶Chuo Denki Kogyo Co., Ltd.
Main businessMelting and solidiﬁcation of incineration ash▶Kashima Oﬃce1213

Nippon Denko Co., Ltd.
4t h F l o o r , T o k y o T atemon o Y ae s u B ui l d i ng , 1 - 4-16, Yaesu, Chuo-ku, Tokyo, 103-8282, Japanh t t p s : / / w w w . n i p po n d e n k o . co . jp /e nMar. 2023