Iron Ore Fines (dust) cannot be placed directly into the blast furnace to make Iron as it would block the passage of gasses inside the smelting vessel and snuff out the combustion process. To prevent this Iron ore is first processed into a material called Sinter.
Sinter is manufactured by mixing iron ore dust with coke and some other mineral additives. This mixture is then burnt at a relatively low temperature, in a sintering machine. This process causes the materials to fuse together into a porous “clinker” type material.
The fans that Howden engineer for the sinter plant applications are designed to specifically for the arduous conditions of the plant environment. High reliability and low maintenance are the main design considerations although there is increased client focus on plant efficiency.