Blast furnace operation requires a controlled supply of compressed air. This air is enriched with oxygen and preheated in stoves before it is blown into the lower part of the furnace.

Even short interruptions of this hot blast supply may allow solidifying of the fluid iron on the blower pipes and result in total loss of production.

For reliable furnace operation the efficient switching between several stoves is required to guarantee a continuous hot blast supply.

• high availibility: any failure may result in total loss of production
• optimized, fast anti-surge control: because switching between stoves and operating modes may result in heavy pressure changes, leading to compressor damage
• precise control of hot blast flow, even at strong flow fluctuations due to stove filling
• optimized power use of the compressor
• automation of all operating modes