degree was about 50%. Also a correlation between the hydration degree and the total heat evolved was obtained. The X-ray and SEM/EDX studies have shown that K2SO4 is adsorbed at the surface of CaSO4 even within 5 min of hydration and a syngenite—a double salt K2SO4·CaSO4·H2O is formed (even in the presence of 1.0 wt% K2SO4). Also, important changes in the morphology of the dihydrate crystal are detected
已经通过不同的实验技术研究了 K2SO4 活化剂对从燃烧的 FGD-
石膏中获得的
化学硬石膏水合的影响。获得的结果表明,当 K2SO4 浓度从 0.5% 增加到 3.3 wt% 时,
水合程度增加。它们的放热速率和最大值也随着 K2SO4 浓度的增加而增加。当
水合度约为 50% 时获得最高值。还获得了
水合度和放出的总热量之间的相关性。X 射线和
SEM/EDX 研究表明,即使在
水合 5 分钟内,K2SO4 也会吸附在 CaSO4 的表面,并形成同生岩——一种复盐 K2SO4·CaSO4·
H2O(即使存在 1.0 wt% K2SO4 )。此外,检测到
二水合物晶体形态的重要变化。最后,