(中國(guó)科學(xué)院 過(guò)程工程研究所 多相反應(yīng)重點(diǎn)實(shí)驗(yàn)室，北京 100080，中國(guó))
摘 要: 用旋轉(zhuǎn)柱體法系統(tǒng)測(cè)量了CaCl2-MgCl2熔融鹽體系的粘度，考察了熔融CaCl2-MgCl2體系粘度隨溫度和組成的變化關(guān)系。比較了實(shí)驗(yàn)測(cè)得的數(shù)據(jù)與文獻(xiàn)報(bào)道值，根據(jù)熔融鹽體系粘度變化規(guī)律對(duì)熔融體系結(jié)構(gòu)進(jìn)行了推斷。實(shí)驗(yàn)測(cè)得熔融物體系粘度隨溫度升高而明顯降低，由于所用試劑含有少量雜質(zhì)，與文獻(xiàn)報(bào)道的純CaCl2和MgCl2的粘度值相比，實(shí)驗(yàn)測(cè)得值出現(xiàn)偏差。熔融CaCl2-MgCl2混和體系的粘度明顯要比純物質(zhì)的粘度大，這說(shuō)明在熔融條件下，CaCl2-MgCl2體系生成了體積較大的配合物粒子，增加了熔體粘度。在不同的溫度條件下，由于有不同組成的配合物生成，體系粘度最大值對(duì)應(yīng)了不同熔體組分。
關(guān)鍵字: 氯化物熔鹽； 粘度； 旋轉(zhuǎn)柱體法
（ Multi-phase Reaction Laboratory, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China）
Abstract: The viscosities of molten CaCl2-MgCl2 system were measured using rotating cylinder method, and the variations with temperature and components were explored. The experimental data were compared with the literatural ones, the deduction and prediction to the structure of molten CaCl2-MgCl2 proceeded on the base of variating regulations of molten melts with temperature and components as well. The viscosities of molten chlorides were decreasing apparently with increasing temperature, however, because of the impurity in experimental reagents, there were discriminations between literatural and experimental values. As larger volume complex ions being formed, the viscosities of molten mixing CaCl2-MgCl2 melts were higher than those of the pure components. And different complex ions were formed at different temperatures, the highest points of viscosity in the system are corresponding with different compositions.
Key words: molten chloride melt; viscosity; rotating cylinder method
