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介绍南化（集团）公司磷肥厂１５ｋｔ／ａ磷酸装置运行３０年来，湿法磷酸主要设备的用材和被腐蚀情况。认为：湿法磷酸的腐蚀性取决于磷矿中杂质量（主要是Ｃｌ－、Ｆ－的含量）Ｋ合金类奥氏体不锈钢可耐Ｃｌ－含量较高的磷酸腐蚀；石墨耐腐蚀性优良，但低强度和脆性易引起石墨管破裂，结垢清洗也较困难；应扩大非金属材料代替金属材料的使用范围。
Describe the use of 15kt / a phosphoric acid plant of Nanhua Chemical (Group) Company in the operation of its main equipment for 30 years and its corrosion. It is considered that the corrosivity of WPA depends on the amount of impurities (mainly Cl- and F-) in the phosphate rock. K alloy austenitic stainless steel can resist the corrosion of phosphoric acid with high Cl- content. The corrosion resistance of graphite is excellent, However, low strength and brittleness easily lead to graphite tube rupture, fouling cleaning is more difficult; should expand the use of non-metallic materials to replace the use of metallic materials.