钾明矾晶体的生长速率：无声与超声条件的比较

Growth rate of potash alum crystals: comparison of silent and ultrasonic conditions.

作者信息

Amara N, Ratsimba B, Wilhelm A, Delmas H

机构信息

Ecole Nationale Supérieure d'Ingénieurs des Arts Chimiques et Technologiques, 118 route de Narbonne, 31077 Toulouse, France.

出版信息

Ultrason Sonochem. 2004 Jan;11(1):17-21. doi: 10.1016/S1350-4177(03)00131-7.

DOI:10.1016/S1350-4177(03)00131-7

PMID:14624982

Abstract

The influence of power ultrasound on the growth rate of potash alum was investigated. The experiments on growth of potash alum crystals were carried out in a stirred double jacket tank in silent conditions as well as in the presence of power ultrasound (20 kHz) at 32 degrees C, with different initial crystal sizes. It was observed that the mass growth rate of potash alum was faster under ultrasound compared to that under silent conditions. The shape was not modified by ultrasound but the size of crystals, which are grown under ultrasound, are smaller and with higher density compared to those grown under silent conditions.

摘要

研究了功率超声对明矾生长速率的影响。在32摄氏度的搅拌双夹套槽中，分别在无声条件下以及存在功率超声（20kHz）的情况下，对不同初始晶体尺寸的明矾晶体进行生长实验。观察到，与无声条件相比，超声作用下明矾的质量生长速率更快。超声并未改变晶体形状，但与在无声条件下生长的晶体相比，在超声作用下生长的晶体尺寸更小且密度更高。