Arcelor Mittal Gent handles 3 MTPA of iron ore as part of its steel production process. Two conveyors carry the material. One of the systems (a 1400 mm-wide belt running at 3.5 m/s) was experiencing carryback and fugitive material despite having primary and secondary cleaners from another manufacturer in place. The problem resulted in the loss of valuable material and required manpower to be diverted from normal tasks to do clean-up. Both of these reduced overall process efficiency and negatively impacted productivity, ultimately reducing profitability.
After reviewing the situation to determine the best possible solutions, making note of the high speed of the conveyor and the abrasive nature of the cargo, it was recommended to install a Martin® CleanScrape® Primary Cleaner to replace the existing 2-blade system. Unlike conventional belt cleaners that are mounted at a 90-degree angle to the belt, the CleanScrape® cleaner is installed diagonally across the discharge pulley, forming a 3-dimensional curve beneath the discharge area that conforms to the pulley’s shape. The unique design incorporates a matrix of tungsten carbide scrapers and is tensioned lightly against the belt to prevent damage to the belt or splices.