CHEN Jiajing1 ,2 , AN Zhuoqing * 1 ,2
( 1 . Key Laboratory of Green Extraction & Efficient Utilization of Light Rare-Earth Resources ( Inner Mongolia University of Science and Technology) , Ministry of Education , Baotou 014010 , China; 2 . Rare Earth Industry School , Inner Mongolia University of Science and Technology , Baotou 014010 , China)
Abstract : Viscosity measurement plays a significant role in many fields , especially for high-temperature melt viscosity. The selection of an appropriate measurement method is essential for both the investigation of the rheological properties of melts and the guidance of in- dustrial production. At present , the introduction of viscosity measurement methods for high-temperature melts is not clear or compre- hensive enough in the reported literature . For example , the basic principles are only vaguely introduced; the use of the temperature range and the measurement accuracy are missing; and the specific types of high-temperature melts for which the various viscosity meas- urement methods are applicable are not adequately described. Based on the existing viscosity measurement methods , this study focuses on the research progress of the capillary method , the oscillation method , the falling ball method and the rotation method in the field of viscosity measurement of high-temperature melts , as well as analyzes and compares the special parallel plate method and the hanging wire method in detail. Moreover , the hot-stage observation method , a new method for measuring the viscosity of high-temperature melts , is introduced. On this basis , the basic principles , measuring temperature intervals and accuracy ranges of each measurement
