Sms Group Gmbh

Ulrich Wiegard

Judith Ahrens

Axel Weyer

Lothar Fischer

Klaus-Peter Eberwein

Jochen Wans

Andreas Naujock

A strand guide device serves to deflect a freshly cast strand, typically made of metal, into the horizontal. During the deflection, the cast strand passes through a cooling chamberinside the strand guide device, in which it is sprayed with a coolant, with the formation of steam. The steam forms at least a steam-air mixture' with sucked-in secondary air, which is sucked out of the cooling chamber by a suction device. In order to reduce the pollutant content of the sucked-in and sucked-off steam-air mixture′ and its emission into the environment, pollutants, primarily dust, located in the steam-air mixture′ are depleted by a separator

Method and strand guide device for operating a cooling chamber

A device for discharging exhaust air from the surroundings of a metal strip. The device has air quantity boosters with an opposing suction device on the other side of the conveying path in the blowing direction in order to suction and discharge the airflow generated by the air quantity boosters together with the exhaust air. In order to reduce costs for the operation of the device, a sensor device is provided in order to detect whether the metal strip is present or not and at which speed the metal strip is being moved. Additionally, a controller is provided in order to adjust the delivery rate of the air quantity boosters and the suction device depending on the measured speed.

Device for discharging exhaust air from the surroundings of a metal strip

The invention relates to an apparatus and to a method for separating condensable materials from an exhaust air stream. Known apparatuses of this type typically comprise a flow duct for the correspondingly contaminated exhaust air, wherein a first separator () and a second separator are connected in series in the flow duct (). A fan is typically connected downstream of the two separators and operates as a suction fan in order to draw the exhaust air through said separators and to discharge the exhaust air to the environment after it has passed through both separators. In a rolling mill, order to observe predefined limit values for the proportion of condensable materials in exhaust air streams before such streams are discharged into the ambient air, the present invention provides for the exhaust air to be separated at the rolling mill itself, and, downstream, for the fan to be placed not at the outlet of the separators but upstream of the first separator. In addition, a scrubber is connected between the fan and the first separator, and a cooling device is provided between the first and second separator. Following the last of the separators, the exhaust gas streams A and B are reunited and are exhausted via a stack.

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Düsseldorf, Germany

Ulrich Wiegard