【摘要】 本文主要研究了不同水溶性离子对煅烧烟气脱硫石膏水化过程,也就是对大块煅烧石膏向石膏转化的相变过程的影响.研究表明,在煅烧石膏向石膏转化的相变过程中,所有的阳离子都能加速煅烧石膏的水化作用,其中Ca²⁺的加速效应最弱.对于最终沉淀得到的晶体,除了钠离子外,晶体尺寸不受不同种类盐的影响.而在钠离子中,可以观察到长度大于130μm的巨型结晶.本研究阐明了不同离子对煅烧石膏水化的影响,为原始的烟气脱硫石膏在实际应用前的预处理提供了充分的指导.更多还原

【Abstract】 The influence of various water soluble cations(K⁺, Na⁺, Ca²⁺, Mg²⁺) on the hydration of calcined flue gas desulphurization gypsum was investigated. The results show that all cations but Ca²⁺ can accelerate the hydration of bassanite. The final crystal size is not largely influenced by different salts, except for Na⁺, where the giant crystal with length of>130 μm is observed. Current study clarifies the influence of different ions on the hydration of bassanite, which could provide sufficient guide for the pre-treatment of original flue gas desulphurization gypsum before actual application.更多还原