Jul 03, 2008· Dear Bulkaholics, Currently, we are facing problem on unloading of sodium carbonate from hopper truck to silo. Before, the unloading time is 23 hours but now it increased to 68 hours. With this slow unloading rate, there is large probability of material runout. The action plans we executed were cleaning of convey line, Aerzen blower was checked but still in good condition, hopper truck was ...