Blast furnaces and arc furnaces
Blast furnaces and arc furnaces

High process reliability, for many years and around the clock

At no other place in the steel mill is process reliability as important as at the blast and arc furnaces. For once it is commissioned, a blast furnace is used around the clock over the course of years.

Continuously and reliably managing high temperatures and magnetic fields is a top priority for every steelworker. Some of its important tasks are water cooling, safe supply and discharge of gas when producing pig iron in a blast furnace and positioning of electrodes in an arc furnace. With a full-range assortment with all effective principles, Balluff provides sensors and systems that solve a wide variety of applications in the steel industry.

Application examples

  • Electrode monitoring in the arc furnace

    Reliably detect color markings at different temperatures

    The solution

    Sensors for detecting color and contrast support the positioning of electrodes in the arc furnace. The sensor, which is protected in the gripper checks whether it has been gripped correctly using color markings on the electrode.

    The features

    • Detect color, even at modified object temperatures
    • Detect and distinguish any number of colors, even the slightest nuances of color
    • Easy to configure and visualize via software
    • Rugged metal housing
    Reliably detect color markings at different temperatures
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  • Assurance of the correct electrode position

    Reliable position assurance increases your process quality

    The solution

    Balluff BES inductive sensors deliver convincing performance, particularly in the rough conditions of the steel industry. Weld field immune and insensitive to magnetic fields, they are extremely reliable in ensuring the correct electrode position at the arc furnace.

    The features

    • Contact-free and therefore wear-free
    • Available in designs Ø 3 mm...80×80 mm square dimensions
    Reliable position assurance at the blast furnace
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  • Reliably regulating air and gas supply at the blast furnace

    Process optimization in pig iron production

    The solution

    Our BTL magnetostrictive linear position sensors are excellent for the control of valves and flaps at the blast furnace. They help to reliably regulate supply and return air in pig iron production. Alternatively, you can use inductive BES standard sensors. A temperature sensor is integrated in the electronics head for all BTL magnetostrictive linear position sensors with a bus interface. This guarantees the correct temperature measurement.

    The features

    • Reliably regulate supply and return air
    • Additional safety and highly accurate temperature measurement thanks to temperature sensor integrated into the electronics head
    Reliably regulate the air and gas supply in pig iron production
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  • Pressure measurement for the water cooling

    Optimize water cooling using reliable sensors with low drift

    The solution

    Balluff BSP pressure sensors are optimally suited for use in steel mills. With their extremely low drift, they can guarantee a long, stable pressure measurement process during water cooling at blast and arc furnaces.

    The features

    • Degree of protection IP67
    • Reliably monitor cooling water at the rolling stand or pressure at hydraulic drives at –25…125 °C
    Ensure water cooling at blast furnaces
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  • Level monitoring of charges and coke

    Reliable and precise under extreme conditions in the steel mill

    The solution

    Balluff BUS ultrasonic sensors are perfect for monitoring stack heights on conveyor belts as well as fill levels in silos. Under the harsh conditions of the steel mill, they detect objects made of many materials. This means that they guarantee that the blast furnaces are always reliably charged, even if there is dust and dirt caused by charges and coke.

    The features

    • Non-contact detection
    • Irrespective of color, transparency, reflection properties and surface finish on the object
    Level monitoring with ultrasonic sensors
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    Industry team

    Do you have questions? Would you like a consultation? Our industry team looks forward to hearing from you.