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对CO_2法硬化的水玻璃砂再生砂而言,造成再生砂制备的型砂性能恶化的主要原因是残留碳酸钠盐类的晶体及其碎片.JZ添加剂的作用在于缓解残留钠盐对硬化作用的有害影响.
For the sodium silicate sand that is hardened by the CO 2 method, the main cause of deterioration of the sand produced from the recycled sand is the crystals of the residual sodium carbonate salts and their fragments. The effect of the JZ additive is to alleviate the detrimental effect of the residual sodium salt on the hardening effect influences.