| Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences | Host |
| Citation: |
LI Shuai, WANG Yubin, HE Tingshu, WANG Xiao, YANG Liushuan. Influence of Iron Sulfate on the Morphology of Calcium Sulfate Whiskers[J]. Conservation and Utilization of Mineral Resources, 2017, 37(2): 96-100. doi: 10.13779/j.cnki.issn1001-0076.2017.02.018
|
Influence of Iron Sulfate on the Morphology of Calcium Sulfate Whiskers
-
Abstract
Taking neutralized dregs of acid pickling solution in a rolling mill as raw material,hydrothermal method was applied for the preparation of calcium sulfate whiskers.The influence mechanism of iron sulfate on the morphology of calcium sulfate whiskers was studied by the analytical methods such as XRD,SEM and EDS.The results indicated that iron ion had an adverse effect on calcium sulfate whisker growth.When whiskers were prepared by hydrothermal method,Fe3+ could reduce the surface energy of the whiskers and limit the growth rate of crystal by adsorbing on the (111) crystal of calcium sulfate whiskers,mainly existed in the Fe(OH)3 form.In addition,SO42-in the solution could produce the common-ion effect which inhibited dissolution reaction and weakened dissolution rate of dihydrate calcium sulfate.Under the combined effect of both Fe3+ and SO42-,calcium sulfate whiskers presented characteristics that less quantity,relatively small ratio of the length to diameter and more granular and tabular morphology.The research achieved the comprehensive utilization of neutral dregs and improved the additional value of industrial by-product. -
-
Access History
Export File
Citation
LI Shuai, WANG Yubin, HE Tingshu, WANG Xiao, YANG Liushuan. Influence of Iron Sulfate on the Morphology of Calcium Sulfate Whiskers[J]. Conservation and Utilization of Mineral Resources, 2017, 37(2): 96-100. doi: 10.13779/j.cnki.issn1001-0076.2017.02.018
DownLoad: