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一、前言橡胶衬里是一种传统的化工防腐蚀方法。橡胶具有优良的耐化学腐蚀性,除了强氧化剂及一些有机溶剂外,橡胶对大多数的无机酸、有机酸、碱、盐类、醇类等都是耐腐蚀的;橡胶与金属表面有良好的粘合力,且有较好的耐磨性和抗冲击性能,因而橡胶衬里仍广泛应用于化工设备、容器、管道的防腐蚀。在磷肥工业上,常接触的化工介质有磷酸、硫酸、氢氟酸、氟硅酸、氨以及一些盐类等,这些介质对钢铁的腐蚀性很强,常采用橡胶衬里来防腐蚀。近年来,我国对磷肥特别是氮磷复合化肥的需求量与日俱增,七五计划期间将建设
First, the foreword Rubber lining is a traditional chemical anti-corrosion method. Rubber has excellent chemical resistance, in addition to strong oxidants and some organic solvents, the rubber on most of the inorganic acids, organic acids, alkalis, salts, alcohols, etc. are all corrosion-resistant; rubber and metal surfaces have a good Adhesion, and has good wear resistance and impact resistance, rubber lining is still widely used in chemical equipment, containers, pipes, anti-corrosion. In the phosphate fertilizer industry, the chemical medium often contacted with phosphoric acid, sulfuric acid, hydrofluoric acid, fluorosilicic acid, ammonia and some salts, etc. These media are highly corrosive to steel, often using rubber lining to prevent corrosion. In recent years, China’s demand for phosphate fertilizer, especially nitrogen and phosphorus fertilizer has been increasing day by day, and will be built during the Seventh Five-Year Plan