用超声波技术制备高纯SrCO_3

High Purity Strontium Carbonate Prepared by UltrasonicTechnology

以工业SrCO3、HCl、H2SO4、Na(OH)为主要原料,利用结晶分离法获得高纯Sr(OH)2,进而在超声作用下用NH4HCO3为碳酸化原料制备出高纯SrCO3,并研究反应温度和反应浓度对碳酸化过程的影响。结果表明:使用结晶分离法可获得纯度为99.78%的Sr(OH)2晶体;在超声波空化作用下,制备的高纯SrCO3粒径小且分布均匀;低反应温度和低反应浓度可增强超声波空化效应,进而改善高纯SrCO3的理化特性。

The new technology to produce high purity SrCO_3 by with industry carbonate,hydrochloric acid, vitriol, sodium hydroxide as raw materials is investigated. The Sr(OH)_2 is mainly purified by crystallization separatingmethod. The authors Use ammonium bicarbonate in the reaction of carbonation, the high purity SrCO_3 is produced under the ultrasonic action. The solution concentration of Sr(OH)_2 and reaction temperature have important effects on the reaction of carbonation. The results show that the purification of Sr(OH)_2 is 99.78%; The paratcles of the high purity SrCO_3 distribute equably and the average particle size is small. The light concentration and te low temperature can enhance the ultrasonic cavitating reaction, and then the physical and chemical characteristics of it is improved.