我公司引进美国Ｊａｃｏｂｓ公司预中和、氨化粒化、转鼓造粒工艺及部分关键设备，建成了１８０ｋｔ／ａ磷铵装置。其中返料斗提机、干燥斗提机为引进设备，在大型磷铵装置中，一般选用重载斗提机。该类设备在运行中冲击载荷大，工作环境恶劣。通过３年的试生产情况看，该类设 My company introduced the United States Jacobs pre-neutralization, ammoniation granulation, drum granulation process and some key equipment, built 180kt / a ammonium phosphate plant. Among them, the hopper bucket elevator and the bucket bucket elevator are the imported equipment. In the large-size ammonium phosphate plant, the bucket bucket elevator is generally used. Such equipment in the operation of the impact load, poor working conditions. Through the trial production of 3 years to see the situation