介绍了化肥厂中普遍存在的铝材设备腐蚀问题及相应的腐蚀机理,针对化学药剂难以完全抑制碳化水箱的局部腐蚀,详细介绍了阴极保护方法,并阐述了阴极保护的机理及阴极保护方案,还根据实际经验,重点介绍了具体实施过程中涉及到的问题,如设备尺寸及保护面积的计算、阴极与阳极的布置、设备的表面处理及涂层。为证明此方法的有效性,作者还专门从直观效果和试片检测两方面介绍采用阴极保护的应用效果。理论和实践证明,阴极保护法是保护化肥企业铝材设备的有效手段。

An introduction of the corrosion problems and relevant corrosion mechanism of aluminium equipment in chemical fertilizer factories are given.Aiming at this tendency that chemical treatment can not completely con- trol the corrosion parts of the water box for carbonization, cathodic protection is introduced in detail in order to protect the aluminium equipment.Explanations are given not only on the mechanism of cathodic protection but on its implementation scheme.Based on practical experiences, the calculation of the sizes of the equipment and the protected areas, the arrangement of the cathode and anode, and the surface treatment and coating of the e- quipment are emphasized.To verify the effectiveness of this method, the application efficacy of cathodic pro- tectin is introduced especially in two aspectsintuitionistic effect and sample tests.The theory and practice prove that cathodic protection is an effective method for protecting aluminium equipment in chemical fertilizer facto- ries.