Reasons for Poor Discharge in Fertilizer Roller Press Granulator Production Lines
Issues such as poor discharge, excessive material recirculation, feed slippage, and feeder clogging in roller press granulator production lines primarily stem from five key areas: material properties, moisture content, equipment condition, process parameters, and operational practices. First, inappropriate material moisture content. If the moisture level is too high, the material becomes sticky and prone to adhesion and clumping. It may stick to the hopper walls, roller surfaces, and feed screw, leading to bridging, wall-hanging, and a failure to discharge. Conversely, if the moisture level is too low, the material becomes excessively dry with poor flowability and high internal friction; this causes feed slippage, insufficient compaction, feeding difficulties, and reduced output. The optimal moisture content for extrusion granulation is generally maintained within the range of 8% to 12%. Second, unreasonable material particle size and composition. If the fine powder ...