Effect of succinic acid on the preparation of α-HH and its hydration properties

Simultaneous effect of Na2EDTA on the phase transformation and morphology evolution during the transformation of gypsum into α-calcium sulfate hemihydrate

“…% citric acid, and Jia et al prepared short hexagonal columnar a-HH with an aspect ratio of 2.80 and a compressive strength of 25.03 MPa from flue gas desulfurization gypsum at a concentration of 0.90 mM Na 2 EDTA. [21][22][23] Wang et al used various carboxylates including citric acid, sodium tartrate and EDTA to study their effect on the dehydration process of gypsum and found that the EDTA group reached the largest conversion rate of gypsum with an ideal solid powder composed of a-HH. 24 In addition, EDTA possesses a certain inhibitory effect on the crystal growth rate of calcium sulfate.…”