Handling and processing of raw materials or preliminary products to be converted into basic metals often come with unrequested dust emissions. To generate metal, a multitude of processes are applied to decompose, alter and process solids into alloys or special grades with certain characteristics (hardness, mechanical strength, resistance to corrosion or temperature etc.). Other considerations for filtration equipment can be the recovery of valuable dust to recycle it into the production process. Besides air pollution control, economical reasons could be decisive for the appropriate dust collector.
Air filtration equipment like bag filters, cyclones and scrubbers have to withstand rough environments. Dusts, off gases, swarf and/or sparks must effectively be separated, also at higher temperature levels. Main focus is on reliable compliance with clean gas requirements or high separation efficiency (for product recovery) as well as high durability and a low wear design. Due to plant sizes and depending on application, explosion and fire suppression must be provided.