在循环冷却水系统中，最常见的难溶盐或微溶盐有碳酸钙、硫酸钙、磷酸锌及硅酸镁等。
In the cooling water system, the most common scale is carbonate, sulphate, phosphate, silicate.
镁盐和铝盐对以六偏磷酸钠或聚丙烯酸钠作分散剂的浇注料有良好的促凝作用，但分散剂不同时其促凝机理也不同。
Both of salt magnesium and salt aluminum have good accelerating effects on the castable with SHP or SPA as dispersant, but the accelerating effect is different.
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