摘要
采用常压盐溶液法从烟气脱硫石膏中制备具有理想形态的高强α-半水石膏,并借助扫描电镜、DTA等测试手段分析硫酸浓度对α-半水石膏结晶形态转化的影响。研究表明:在温度、盐溶液种类、浓度、pH值、结晶习性改良剂和稳定剂的种类及掺量不变的前提下,硫酸浓度为15%时可加快α-半水石膏的生成且晶体形态为致密短柱状。
α-semi- hydrated gypsum which has better preparation in the form of high- strength was prepared with Aqlueous Salt Solution Method in Atmospheric Pressure from flue gas desulfurization gypsum. The affect of sulfuric acid concentration on crystal shape of α-semi-hydrated gypsum was investigated by SEM and DTA. The results showed that： On the premise of which the temperature, type of salt solution, concentration, pH value, crystal habit modifier and types of stabilizer and added content not changed, 15% Sulfuric acid concentration could accelerate the generation of α-semi-hydrated gypsum and form thickening prismatical crystal .
出处
《内蒙古石油化工》
CAS
2009年第7期97-99,共3页
Inner Mongolia Petrochemical Industry
关键词
Α-半水石膏
硫酸
浓度
α-semi-hydrated gypsum
Sulfuric acid
concentration
