PROTECT THE ENVIRONMENT AS
EFFECTIVELY AS YOUR EMPLOYEESMODERNIZATION PACKAGES TO MEETEVER STRICTER ENVIRONMENTALREGULATIONS

primetals.com

TAKE THE FUTURE OF YOUR PLANT AND ITSENVIRONMENT IN YOUR OWN HANDS
MODERNIZATION PACKAGES FROM YOUR
LIFECYCLE PARTNER

MEET ENVIROMENTALREGULATIONS AND REQUIREMENTS
Optimize CO2 and waste reduction,
save water, and reduce energy
consumption to previously unattainedlevels. Our solutions detect resource
inefficiencies and provide decisive
improvements and thus enable you
to meet ever stricter environmental
regulations.
REDUCE PRODUCTION COSTS
Cut operational, maintenance andenergy expenditures with innovative
modernization packages which will
optimize your production processes
over the entire lifecycle of yoursteelmaking plant. The earlier
investments are made, the sooner costsavings can be achieved.
EXTEND YOUR PRODUCTION MIX
Increase production flexibility andefficiency of your plant on thebasis of proven solutions. Constantmodernization, integrated into yourproduction processes, will enable you
to serve the market with a broader
range of innovative products and leadto a new dimension of excellence.

2ENHANCE QUALITY
Meet the steadily increasing market
demands regarding steel grades andquality with sophisticated solutions
for power, performance, product andquality control. Continuous real-time
analysis is the key for improving metalor surface characteristics.
INCREASE SAFETY
Ensure the smooth running of yourplant and protect your personnel withsophisticated automation packages.
If there are breakdowns, emergency
programs prevent possible downtimes,
while logical, simple process screensmake it easy to maintain an overview
and full control of the process.
SAVE WATER
Save precious resources with state-ofthe-art gas cleaning technology basedon dry dedusting. This technology not
only improves gas cleaning efficiency
but it also eliminates the need for thewater treatment plant of your former
wet dedusting system. This of course
can substantially reduce operating andmaintenance costs.

3

PROTECT YOUR ASSETS FROM EVER
STRICTER REGULATIONSSOLUTIONS THAT CREATE ECONOMICALAND ECOLOGICAL VALUE

The iron and steel industries are
responsible for 30% of industrial CO2emissions and a number of otherpollutants such as NOx and finedust. For every metric ton of steel
produced, about 25 kilograms of dust
accumulate. This sector has therefore
been a prime target of legislation
to reduce gaseous and fine-dustemissions.
Old or outdated technology insteelmaking plants is simply not
sufficient to meet ever stricter
regulations. It takes great efforts toreduce the environmental impact ofsteel production, especially when you
need to maintain or even increase
productivity at the same time.
BRIDGE THE GAP
An active dialogue with customers
in the development of new solutions,continual knowledge sharing with allparticipants, and addressing future
global as well as regional needs arevital elements of our sustainable
development and solutions. On
this basis, we bring modernization
technology to life that will help you
meet the strictest environmental
requirements in your region while
ensuring a long-term sustainablegrowth.

4

FULFILL OR EVEN EXCEEDENVIRONMENTAL REQUIREMENTS
Meet ever stricter regulations without
the need to make big investments
in new facilities. As the world’s only
global full-line provider and yourlifecycle partner, we possess uniqueexpertise in the field of steelmaking
technology and therefore can offer
you highly effective modernization
solutions, either in the form of single
products or complete modernization
packages. In conjunction with you
as our partner, we will continue
developing sustainable solutions thatcreate economic, ecological and social
value for all participants and over theentire lifecycle of your plant.
Protect the residents and your staff
from dangerous emissions – andprotect your assets from looming
penalties. We help you achieve yourenvironmental targets:• Reduce CO2 emissions• Reduce fine-dust emissions• Reduce cooling water consumption• Reduce energy consumption

5

GET A CLEAR VIEW IN EVERY SITUATIONCOMPLETE MODERNIZATION PACKAGESOR SINGLE PRODUCTS FROM YOUR
LIFECYCLE PARTNER

The worldwide regulations forenvironmental protection arechallenging nevertheless in mostcases single improvements in thesteelmaking process can be effective
enough to achieve good results.
As your lifecycle partner with deep
insights, we can offer you both: fastand cost effective small improvementsin the single process areas as well as
overall performance improvements on
the basis of major revamps.
Achieve fast and effective results
without the need of making big
investments in new facilities. We offer
you a worldwide unique range ofcustomized modernization solutions
for environmental care in steelmaking,either in the form of single

products or complete modernization
packages. Our modernization portfolio
for steelmaking focuses on solutions
for gas cleaning, dedusting, byproduct management and energy
recovery.
The basis for improvements is ourcomprehensive know-how that resultsfrom decades of experience in themetals industry and our dedication
to lifecycle partnership. As one of
the world’s leading lifecycle partners
for the metals industry, we offer acomprehensive portfolio, which covers
the entire lifecycle of metallurgicalplants and which supports ourcustomers in improving theircompetitiveness.

Modernization

New plant

Modernization phases:
New design
Reengineering

Consulting

Installation/commissioning

Planning
Assembling
Execution
Inspection
Investigation
Consultancy

Financing

Spare partmanagement

Technical assistanceTraining

67

MEET THE MOSTSTRINGENT EMISSIONREQUIREMENTS
PULSE JET FILTER

DEDUSTING WITH
THE BEST AVAILABLETECHNOLOGYPRIMARY ESP FOR
LD(BOF) CONVERTERINCREASE GASRECOVERY WITH
AUTOMATIC CONTROLDRY DEDUSTINGSYSTEM FOR LD(BOF)

This modernization package includes standardized highperformance bag filters, which are designed for low andeasy maintenance in a steel shop environment. The pulse
jet filter permits future extensions with add-on components
and requires low energy consumption and fully automatic
filter cleaning. A flexible bag length allows reducing thefootprint of the filter. Further advantages of this package
are operation with low maintenance, flexible application forvarious types of dedusting applications, and fulfillment of
most stringent emission requirements.

The LD(BOF) converter offgas passes through a roundtype dry electrostatic precipitator where the fine dust isremoved by using the force of an induced electrostatic
field. Dust collection, removal and extraction equipment
is an integral part of the design. Dust can be collected
in a dry state and directly fed to dust recycling plants.
Most stringent emission requirements can be fulfilled andoperation and maintenance requirements are low.

In the Primetals Technologies switch-over station, thediversion of LD(BOF) converter gas flow from flaring torecovery is achieved by simultaneous opening and closingof cup valves, each located in the respective duct branchesof flare and gasholder. Actuation of the valves is carriedout by a hydraulic unit which also provides the necessary
safety functions. All functions of the switch-over valves areautomatically controlled by an integrated small PLC withall the necessary process interfaces and interlocks. The unit
comes pre-assembled and pre-tested, thus significantly
reducing time for testing and setup.

Additional features, such as automatic bag break detection
or automatic pulse volve control are available.
REFERENCEBE UP TO DATE IN
EVERY ASPECT OF
ENVIRONMENTAL
PROTECTION

8Customer: Dillinger Hüttenwerke, Germany
Plant type: 2 x 190 t LD(BOF)

REFERENCE
Customer: US Steel Košice s.r.o., Slovakia - Steel shop 1
Plant type: 2 x 180 t LD(BOF)

REFERENCE
Customer: Shougang Jingtang United Iron & Steel Co., 		
Ltd., P.R. China
Plant type: 5 x 300 t De-C/De-P

9EXPERIENCE MAXIMUM
POSSIBLE EFFICIENCYWET DEDUSTINGSYSTEM FOR LD(BOF)

ACHIEVE BETTERCOOLING RESULTS
WITH LESS WATER USEGAS COOLER FORHIGHEST COOLINGEFFICIENCYEMPOWER YOUR
DEDUSTING SYSTEM TO
ABSORB MORE
STATIC COOLER FOR
LD(BOF)

INCREASE GASRECOVERY WITH
AUTOMATIC CONTROLDRY DEDUSTINGSYSTEM FOR LD(BOF)

The switch-over station is provided for the gas recoveryof LD(BOF) converters. It comprises a three-way valve
for directing the gas either to the flare stack or to the gas
holder. Additionally, a bypass valve is included for safety
reasons.

In order to minimize the volume of the LD(BOF) convertergas stored in the gas holder, it is cooled down in a gas
cooler to a temperature of approximately 70°C or lower.
The design is extremely efficient and reliable. Water
flow rates can be automatically adjusted in order tominimize water consumption. Closed-loop operation witha secondary water cooler ensures independent operationfrom plant water systems.

The coolers are the central functional equipment insecondary dedusting systems. They are designed to absorb
the major part of the heat energy which is loaded into thesystem during hot metal charging. Temperature peaks canbe absorbed, thus protecting the filter bags from damage
and increasing the net suction capacity of the system. The
design also makes it possible to fit the static coolers intoexisting ducts.

REFERENCE

REFERENCE

Customer: Baotou Iron and Steel Group, P.R. China
Plant type: 2 x 180 t LD(BOF)

Customer: POSCO Pohang Steel Works, South Korea
Plant type: 2 x 300 t De-C/De-P

In the Primetals Technologies switch-over station, thediversion of LD(BOF) converter gas flow from flaring torecovery is achieved by simultaneous opening and closingof cup valves, each located in the respective duct branchesof flare and gasholder. Actuation of the valves is carriedout by a hydraulic unit which also provides the necessary
safety functions. All functions of the switch-over valves areautomatically controlled by an integrated small PLC withall the necessary process interfaces and interlocks. The unit
comes pre-assembled and pre-tested, thus significantly
reducing time for testing and setup.

All valves are operated by hydraulic cylinders according
to process information and interlocks. Independent safety
features are provided in the control and in the hydraulicsystem. In order to avoid a loss of sealing effect, the valve
seats are equipped with a special automatic cleaningsystem. Furthermore, an integrated and independent small
PLC is part of this package.
REFERENCE
Customer: US Steel Košice s.r.o., Slovakia - Steel shop 2
Plant type: 2 x 180 t LD(BOF)

10

REFERENCE
Customer: Shougang Jingtang United Iron & Steel Co., 		
Ltd., P.R. China
Plant type: 5 x 300 t De-C/De-P

11

EXPERIENCE MAXIMUM BENEFIT FROMPOSSIBLE EFFICIENCY PROVEN DUCT DESIGNSELF-CLEANING AND
WATER COOLED DUCTLOW MAINTENANCE
POWER COOLER
Hot offgas coming from the EAF or full combustion
converter dedusting systems can be effectively cooled bymeans of a forced draft cooler. Cooling air is blown throughthe cooling pockets by air blowers, which are controlled
by the target outlet temperature. Due to its pocket design,
the plate-type cooler is self-cleaning, requires minimal
maintenance and ensures high levels of operational
availability.
REFERENCE
Customer: Nervacero S.A. - Celsa Group, Spain
Plant type: 30 t AC-EAF

Hot offgases are drawn from the electric arc furnace
through the water-cooled duct system in a tube-tube
design. Sufficient post combustion is ensured by adjusting
the gap between the water-cooled furnace elbow and thefixed elbow by means of a movable sliding sleeve. The
design of water-cooled sections is optimized with respect
to water flow rate, delta T and available water pressure.
A drop-out box is provided to remove coarse dust and slag
particles after the furnace elbow. The water-cooled ductrouting is flexible in order to suit existing melt shop layouts.
REFERENCE
Customer: Scaw Metals Group, South Africa
Plant type: 75 t EAF12ACHIEVE MAXIMUMENERGY RECOVERY
COOLING STACK

BOOST THEPERFORMANCE OF
YOUR WET DEDUSTINGWDS CONE - WET
DEDUSTING SYSTEM
FOR LD(BOF)

Offgas cooling for converter gas based on a high-pressure
system or steam generation system with flexible design
solutions for retro-fitting: The cooling stack is designed
to cool the hot converter gases. For energy recovery, thecooling stack can be designed as a waste heat boiler to use
the high thermal energy content of the converter gas forsteam generation. Various designs are available, especiallyfor routing and split, in order to best meet special
requirements and layouts. The high thermal loads require
the use of best design and manufacturing.

Gas quenching takes place in a spray quencher, which isfollowed by the main scrubbing process in the annular gap
scrubber element. The scrubber element is controlled bya hydraulic actuation system. Final droplet separation isachieved in a low-maintenance droplet separator. Highperformance gas cleaning is provided along with smoothgas suction control. An integrated and independent small
PLC is part of this WDS Cone package. The flexibility of thelayout allows for easy retro-fitting into existing steel shops.
Water consumption is lower than for old wet-type gas
cleaning systems, while the cleaning efficiency is higher.

REFERENCE
Customer: Arcelor Mittal Eisenhüttenstadt
Plant type: 2 x 240t LD(BOF)

REFERENCE
Customer: US Steel Košice s.r.o., Slovakia - Steel shop 2
Plant type: 2 x 180 t LD(BOF)13

EXPERIENCEPERFORMANCE WITH
SMOOTH CONTROLWDS BAUMCO® - WET
DEDUSTING SYSTEM
FOR LD(BOF)

CAPTURE THE OFFGAS
AND INCREASE SAFETYDOGHOUSE

INCREASE YOURQUENCHINGEFFICIENCYSPRAY COOLER

REDUCE ENERGYCONSUMPTION UP
TO 50%REPLACEMENT OF
A WET DEDUSTINGSYSTEMFor gas quenching, a Hiper BAUMCO venturi throat
is foreseen. Fine cleaning of the gas takes place in asecondary Hiper BAUMCO® venturi throat where water is
injected laterally. An automatic nozzle cleaning systemprovides reliable operation of this Hiper BAUMCO package.
High-performance gas cleaning is provided along withsmooth gas suction control. An integrated and independentsmall PLC is part of this package. The flexibility of thelayout allows for easy retro- fitting into existing steel shops.

A doghouse is a complete enclosure that isolates theconverter and evacuates the emissions generated during
the steel production process. Sound emissions coming fromthe converter are reduced to an appropriate level. Safety
on the working platform is also increased. Moveable doors
provide full access at front side and back side. Furthermore,heat protection is provided in the exposed areas throughthe use of heat-resistant materials such as hematite orhexgrate.

REFERENCE

REFERENCE

Customer: NLMK, Russia
Plant type: 3 x 180 t LD(BOF)

Customer: voestalpine Stahl, Linz, Austria
Plant type: 3 x 180 t LD(BOF)

The quenching tower is equipped with a dioxin reduction
system including a two-stage cooling process. The
design of the tower significantly determines the chemicalcomposition of the dust and can reliably stop the formationof dioxin. Compared to conventional hairpin coolers, thismodernization package is distinguished by a number ofadvantages. The inlet temperature can be up to as much as
1,000°C and space requirements for water precooling arecorrespondingly smaller. Also, the pressure drop in primarydedusting is significantly smaller, thereby reducing energy
consumption of the fans. A quick and easy cleaning as well
as lower maintenance times are further advantages.

Wet dedusting systems have been in use for many years– dry-type dedusting is the most modern and efficienttechnology in terms of gas cleaning and energy efficiency.
Operating costs for dry dedusting systems are significantly
lower than for wet-type dedusting applications. Hence,Primetals Technologies offers a replacement of the old
wet-type dedusting system for LD(BOF) converters witha new dry-type system. The existing scrubber tower inthe melt shop is converted to the evaporation cooler. The
electrostatic precipitator can be located outside of thesteel shop. This package guarantees a reduction of energy
consumption by 50% as well as lowest clean-gas dust
contents of 30 mg/Nm3 or below.

REFERENCE
Customer: Qatar Steel, Qatar
Plant type: 110 t EAF

14REFERENCE
Customer: Baotou Iron and Steel Group, P.R. China
Plant type: 2 x 210 t LD(BOF)15

Primetals Technologies Austria GmbHA joint venture of Mitsubishi Heavy Industries and partners

Turmstrasse 444031 Linz
Austriaprimetals.com
Brochure No.: T10-2-N010-L9-P-V2-EN
Printed in Austria© 2020 Primetals Technologies Ltd. All rights reserved
The information (including, e.g., figures and numbers) provided
in this document contains merely general descriptions orcharacteristics of performance based on estimates andassumptions which have not been verified.
It is no representation, does not constitute and/or evidence acontract or an offer to enter into a contract to any extent and isnot binding upon the parties. Any obligation to provide and/ordemonstrate respective characteristics shall only exist if expressly
agreed in the terms of the contract.
These estimates and assumptions have to be analyzed on acase-to-case basis and might change as a result of further
product development.
Primetals Technologies excludes any liability whatsoever underor in connection with any provided information, estimatesand assumptions. The provided information, estimates andassumptions shall be without prejudice to any possible futureoffer and/or contract.
Any use of information provided by Primetals Technologiesto the recipient shall be subject to applicable confidentiality
obligations and for the own convenience of and of the solerisk of the recipient.
Primetals is a trademark of Primetals Technologies Ltd.