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采用流体静力称重法研究了K3A lF6-Na3A lF6-A lF3铝电解质体系的密度。探讨了K3A lF6,A lF3含量和温度与K3A lF6-Na3A lF6-A lF3体系密度的关系。实验结果表明:K3A lF6-Na3A lF6-A lF3体系密度与温度成较好的线性关系,温度升高,密度降低;随着A lF3含量的降低,体系的密度对温度的变化更加敏感。相同过热度下,固定KR(钾冰晶石含量),随着A lF3含量的增加,体系的密度呈现出不同的变化规律,相同过热度条件下,对于较低的KR=0.1值,随着A lF3含量的增加,体系的密度逐渐下降,对于较高的KR=0.5值,随着A lF3含量的增加,体系密度先降低后增加,存在最低点。相同过热度下,固定A lF3含量,随着KR增加,体系密度也呈现出不同的变化规律,当A lF3为22%,随着KR增大,体系密度变化不大;当A lF3为26%,30%,随着KR增大,体系密度先降低后增加。
The density of K3A lF6-Na3AlF6-A1F3 aluminum electrolyte system was studied by hydrostatic weighing method. The relationship between K3A lF6, AlF3 content and temperature and K3A lF6-Na3A lF6-AlF3 system density was discussed. The experimental results show that the density of K3A lF6-Na3AlF6-AlF3 system has a good linear relationship with temperature, the temperature increases and the density decreases. With the decrease of A1F3 content, the density of the system is more sensitive to temperature changes. Under the same degree of superheat, the KR (potassium cryolite content) is fixed. With the increase of A lF3 content, the density of the system shows a different variation. Under the same degree of superheat, for a lower value of KR = 0.1, For the higher KR = 0.5, with the increase of A lF3 content, the density of the system first decreases and then increases, with the lowest point. Under the same degree of superheat, the content of A lF3 is fixed. With the increase of KR, the density of the system also shows a different variation. When A lF3 is 22%, the density of the system does not change much with the increase of KR. When A lF3 is 26% , 30%. With the increase of KR, the density of the system first decreases and then increases.