With over 185 plants supplied worldwide to date, we have the background and experience to meet your specific needs. Siemens VAI offers a complete portfolio of blast furnace technology, meeting the highest demands of plant performance, operational reliability, and environmental compatibility. Our solutions extend from new turnkey installations to plant upgrades, and include all mechanical equipment, electric and automation systems, media supply and auxiliary facilities – for small to ultra-large blast furnaces with hearth diameters exceeding even 15 meters! This single-source capability, in combination with expert project management and dedication to quality workmanship, is the basis for fast project completion and production ramp-up to design capacity. Operator safety is enhanced with a flat, virtually obstacle-free casthouse floor and by sensitive emission-control systems.
Flexible burden distribution control is seen as
one of the key tools in the iron making process,
providing the operator with the means to control,
influence and improve furnace operation.
The SIMETALCIS Gimbal Top®
SGT3000 & SGT600 product range is the solution to
suit customer’s operation and budget as it is
designed to provide highly competitive, elegant,
simple and robust solutions proven on high
temperature and pressure applications which offer
advantages over other market alternatives.
The Gimbal Top® is suitable for both,
new and existing furnaces with either bell or non
bell charging solutions and is sized for small,
medium or large volume blast furnaces including
parallel feed and central feed patterns.
The Siemens VAI Gimbal Top® is an automated,
computer-controlled pressurized charging system
which provides customers the opportunity to generate
any burden profile by directing the charge to any
point on the furnace stock line.
Complete hot blast stove systems, featuring
state-of-the-art design of stoves, refractories and
water-cooled valves, are supplied by Siemens VAI.
Both, internal and external combustion-chamber-stoves
are offered. They feature a high-efficiency ceramic
burner, ensuring low CO, SO2 and NOX
emissions. A fuel-saving waste-heat recovery system
can be provided. The optimum configuration will be
installed to ensure a reliable supply of hot blast
to the blast furnaces.
Unparalleled experience in the design and supply of
all blast furnace related equipment and technology
provides Siemens VAI with a unique capability to
rebuild stoves of any type and from any supplier.
The choice of the right refractories and cooling
systems at each zone of the blast furnace is
critical for successful, economic and, above all,
safe ironmaking operations. Siemens VAI refractory
designs have been developed over a century and are
well proven with respect to their long productivity
campaigns.
Together with the refractory lining, the blast
furnace cooling system is critical for ensuring an
ultra-long campaign life. Siemens VAI furnace
cooling circuits feature advanced control systems,
accurate leak detection and emergency back-up
systems.
With the use of accurate weighing systems and the ability to provide exact size fractions to the charging system, an ideal blast furnace burden can be produced. Stockhouses for ferrous, carbonaceous and additive feeds are designed to be fully flexible and are built with the lowest possible investment costs. Compact stockhouses, featuring rotary bin feed conveyors, are specifically designed to fit into existing facilities. All equipment, particularly chutes and screens, are built for low wear and low maintenance. Environmental control systems are a standard feature.
As proven at numerous operating blast furnace
plants around the world, Siemens VAI blast furnace
equipment has a reputation for reliability,
durability, and high performance as is supplied to
suit the arduous conditions of the blast furnace
environment.
Siemens VAI Casthouse equipment portfolio includes:
hydraulic clay guns, hydraulic or hydro-pneumatic
taphole drills, trough-cover manipulators, tilting
runners for iron and slag, bar changers and jack dam
drills. High performance blast furnace equipment
such as: tuyere stocks, bleeder valves,
equalizing/relief valves, above-burden temperature
probes, sub-burden gas probes, mechanical stockline
recorders, moveable and fixed throat armor,
stockline ignition lances and profilemeter are also
part of Siemens VAI scope.
When considering their gas-cleaning requirements,
customers must select blast furnace equipment which
ideally utilizes raw materials, maximizes the
gas-energy recovery, and meets all environmental
regulations. Siemens VAI has a long and successful
history in supplying environmental plants of all
types. These include water treatment, dust
recycling, energy recovery and clean-gas
distribution systems. Projects undertaken range from
the supply of new gas-cleaning plants, which
maximize the collection of dry dust, to the
replacement and upgrading of existing equipment to
state-of-the-art solutions.
The Siemens VAI Slag Granulation System has
evolved over the years to a state-of-the-art
technology. Characterized by a high utilization rate
and environmentally friendly production, a
cement-quality product can be generated from blast
furnace waste.
Slag granulation systems are now available in two
options: Mechanical type with screw filter and
pumping type. Both are carefully engineered and
fully optimized according to the requirements of the
customer.
In order to reduce the blast furnace coke rate
and to improve furnace operations, complete and well
proven coal-injection systems are provided for new
and existing blast furnaces. This energy-saving
solution is supported by a complete
technology/technical support package.
The equipment supplied by Siemens VAI features an
availability in excess of 98% and accurate
coal-injection rates to within 2%.
Siemens VAI is well known for its ability to
perform blast furnace rebuilds, relines and
modernizations within extremely tight timeframes.
Modular blast furnace construction concepts have
been perfected to minimize project duration and
plant downtime for both furnace rebuilds and
relines. Existing Siemens VAI furnaces can be
demolished, and new furnaces manufactured,
delivered, built and commissioned in less than
twelve months.
In addition to engineering and technological
expertise, Siemens VAI provides a complete range of
automation solutions, from process automation up to
sophisticated optimization packages and expert
systems. To ensure high-performance blast furnace
operation at low cost, a closed-loop optimization
system known as SIMETALCIS BF VAiron was developed
by the automation division of Siemens VAI.
Siemens Metals Technologies
Blast Furnace