CaCl2-NaF-CaF2-NaCl是互易盐系(reciprocal salt system),因为其具有化学反应:CaCl2 + 2NaF = CaF2 + 2NaCl,并且所有相都是电中性的,即2n(Ca2+) + n(Na+) = n(F-) + n(Cl-),其中n(i)表示离子i的摩尔数。 互易盐系液相线投影图的绘制有两种方法: (一)reciprocal相图模式"reciprocal diagram...
Investigations of the phase diagram of the NaCl-CaCl2-MgCl2-CaF2 reciprocal quaternary system have been performed by thermodynamic phase diagram calculations and cryoscopy. A limited concentration region of the system is used as a flux medium for liquid magnesium metal in connection with the casting ...
目前,常用的镁电解质体系主要有NaCl-KCl-MgCl2、CaCl2-NaCl-MgCl2、NaCl-CaCl2-KCl-MgCl2等[5-8]。 为了实现镁与氯气的分离和液镁的聚集及其与电解质的分离,电解需要在液镁熔点温度(651℃)以上进行,而此电解温度一般较电解质熔点高100~200℃,其会带来电解质挥发量的增加,大量的挥发物将随氯气进入氯压管线中,...
The reversible EMF for the formation of MgCl2 in fused salts containing NaCl and CaCl2 was studied with a view to furthering the understanding of electrolytes of use in industrial magnesium electrolysis. Measurements were carried out in a cell with pure chlorine gas and Mg-Bi alloy as active ...
Thus, it is essential to reoptimize the NaCl–KCl–CaCl2 ternary salts with relatively low melting point and good thermo-physical properties, which is quite fundamental to deeply understand this system and choose the appropriate HTF and TES materials for CSP. In the present job, thermodynamic calc...
制备金属Zr 的工艺条件 王有群",林如山2,何 辉2,王 欢1,刘云海1，* 1. 东华理工大学核科学与工程学院，江西南昌330013；2. 中国原子能科学研究院放射化学研究所，北京102413 摘要:将氧化物转化为金属是熔盐电解精炼干法后处理氧化物乏燃料流程的关键步骤之一。在等摩尔CaCb- NaCl 混合熔盐体系中，以石墨棒为...
本文使用低温X射线衍射法对不同浓度的LiCl、CaCl2和NaCl-CaCl2水溶液在降温过程中的相变情况进行了实时监测,获得了降温过程中的衍射图。结果显示,在快速降温的实验条件下,随温度降低,CaCl2溶液在-10~-60℃范围内析出冰或CaCl2·6H2O;LiCl溶液在5~-80℃范围内析出冰或LiCl·H2O;CaCl2-NaCl溶液在5~-40℃范围内析出...
(Haghi et al.2017). This tendency is also identified in other salt species-bearing H2O–CO2systems at P–T conditions up to 20 MPa and 70 °C, such as KCl, CaCl2, and MgCl2(Schaef and McGrail2005). The reduction in pH (i.e., more acid solution) of salt-bearing fluids will lead...
theNaCl‐CaCl2‐H2Osystemcanbetterexplaincorresponding geologicalphenomenaandpatterns.However,theresearch‐ ersinthepastonlystudiedthevariousphasebehaviorsofthis systematlowtemperatures.Mao [1] studiedtheRamanspec‐ trafeaturesoftheternarysystematlowtemperatures.Ding andNi [2] studiedthefrozenandmeltingbehaviorsoft...
The solubilities and physicochemical properties in the quaternary system KCl−NaCl−CaCl2−H2O at 283.15 K have been measured with the isothermal method. The dry-salt phase diagram, water-phase diagram, and physicochemical properties vs composition in the system were plotted according to the measu...