Blast Furnace Ironmaking

A furnace reline is defined as a reconditioning of the blast furnace with limited extent for modification and modernisation. However, also here it is worth considering to apply modern technical solutions taking into account the targeted run time of several years.

In both cases, reline or modernisation, constraints in shut-down duration appear to be crucial very often, especially when it is important to limit the loss of production. Therefore, Paul Wurth can offer different reline strategies, define the modernisation goals together with the customer. We are taking care of sequence planning, scheduling, project set-up and execution management.

With regard to the available raw materials base, the design of the furnace proper is fundamental to reliable operation, metallurgical performance, sustained high productivity and long campaign life. For both new installations and reactor rebuilds, Paul Wurth’s modern blast furnace designs are based on the concept of a free-standing, self-supporting vessel with high-quality refractories and a cooling concept which allows a thin-wall construction over the entire height of the furnace. A surrounding square tower supports the top structure and provides access to the furnace shell and attached equipment.