Fertilizer Granulation Process Aids feature mild hygroscopicity. As powder chemical auxiliaries sensitive to humidity, they do not deteriorate easily upon moisture exposure. Whether dampness occurs depends entirely on storage environment and protection measures. Proper sealed storage eliminates moisture risks, while unprotected open storage easily triggers moisture absorption and caking, making moisture protection a priority in fertilizer production.
In terms of inherent characteristics, Fertilizer Granulation Process Aids adopt fine powder formulations containing multiple active components. Fine powder particles possess large specific surface areas and actively absorb water vapor and mist under high atmospheric humidity. This forms the root cause of hygroscopicity. Nevertheless, products are fully dried before delivery and packaged inside moisture-proof bags. Unopened stock stored in standard warehouses stays stable for a long time without dampness or performance loss.
Most dampness incidents arise from inadequate protection. Firstly, high ambient humidity triggers moisture uptake. During summer rainy seasons and plum rain periods, air humidity rises sharply. If warehouse doors and windows remain open without ventilation and dehumidification, vapor penetrates packaging gradually. Materials with poorly sealed bags develop surface dampness and minor caking. Secondly, ground moisture seepage causes hidden dampness. Materials stacked directly on damp concrete floors absorb upward migrating moisture from the ground through the bottom of packaging. This dampness spreads upward gradually, and large-scale caking often emerges before visible signs are noticed.
Moreover, outdoor stacking, rain and condensation are major dampness triggers. Some factories temporarily place the aids outdoors. Temperature differences at night form condensation, which severely dampens and consolidates materials and destroys usability. In addition, failure to seal bags after opening is the most common cause of dampness on production sites. Workshop air contains vapor and dust; uncovered Fertilizer Granulation Process Aids continuously absorb moisture and quickly agglomerate with deteriorated flowability.
Dampened aids compromise production outcomes directly. Slightly wet materials lose flowability and mix unevenly with fertilizer raw materials, leading to poor dispersion and irregular granule formation during granulation. Moderate or severe dampness creates massive agglomerates that cannot be fed normally. It also generates porous, fragile fertilizer granules and lowers finished product yield. Overall, Fertilizer Granulation Process Aids have hygroscopic traits yet remain controllable. Proper sealing, elevated stacking and isolation from humid air, plus avoidance of outdoor storage completely prevent dampness. The material remains dry and free-flowing for optimal use, suitable for stable operation of all fertilizer granulation production lines.
