我公司２０ｋｔ／ａ复混肥工程８０年代中期投产，其中原料系统的破碎是采用立式链磨机（亦称链式破碎机）。该机是从上海化工研究院引进，在生产中存在诸多问题，如堵塞频繁、链条磨损较快等，不仅影响正常生产，而且维修费用高。经过多年的改造对比，摸索出了一些解决问题的 Our company 20kt / a compound fertilizer project put into operation in the mid-80s, of which the raw material system is broken using vertical chain mill (also known as chain crusher). The aircraft is introduced from Shanghai Chemical Industry Research Institute, there are many problems in production, such as frequent blockages, rapid wear and tear of the chain, not only affect the normal production, and high maintenance costs. After years of transformation contrast, worked out some solutions to the problem