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of boehmite and diaspore by Bayer process. 3.1.1 Effect of reaction time The equilibrium concentration of lithium in sodium aluminate solution is closely related to the dissolution rate of lithium... concentration almost approached a constant value in the solution of αk=1.50 from 1 to 7 h. These results suggest that lithium ion can easily reach its equilibrium concentration when lithium aluminate......
the equilibrium constant of the dissolving reaction of gibbsite. Details of value assignment can be found in the original paper [11]. Fig. 1 Equilibrium constant of gibbsite dissolved in sodium... and PITZER [21], as shown in Table 2, are first adopted in this study. When the Pitzer model parameters for NaOH and the equilibrium constant for the dissolving reaction are known, the Pitzer model......
Alstad’s empirical equation. As a result, the apparent extraction equilibrium constant was determined to be 253 (kmol?m-3)-2 with an excellent correlation between the experiment and calculation... extraction equilibrium studies of RE using acidic organophosphorus extractants were carried out mainly under the ideal conditions: low metal concentration with a constant ionic strength and activity......
J. Cent. South Univ. (2018) 25: 2002-2013 DOI: https://doi.org/10.1007/s11771-018-3890-9 A self-regulating pairwise swapping algorithm to search reliability-based user equilibrium ZHANG Wen-yi(张文义... in solving the reliability-based user equilibrium (RUE) problem. The swapping algorithms provide a simple and convenient alternative to search traffic equilibrium since they are derivative-free......
碘量法测定进口蒙古铁矿石中全铁 连俊峰1,张梅1,王巧玲1,王再田1,耿刚强1,宁国东1,丁慧1,于玥1 (1.二连浩特出入境检验检疫局技术中心,内蒙古二连浩特,011100) 摘要:提出了用间接碘量法测定蒙古铁矿石中全铁的方法.对样品溶解,氧化,滴定酸度和终点返色现象等进行试验,并讨论了过量碘化钾对反应平衡影响.通过计算反应平衡常数(K),判断Fe(Ⅱ)氧化碘离子(I~-)析出碘分子(I_2)反应的完全程度,并对本法测定铁矿石中全铁准确度,精密度和操作条件进行评估,标准样品和实际样品的测定值与认定值或其他方法测定值相符,RSD 关键词:间接碘量法; 铁矿石; 反应平衡常数; 全铁; indirect iodometry; iron ore; reaction equilibrium constant; total iron; [全文内容正在添加中] ......
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temperature of about 420 ℃ is only related to the inlet pressure of bed and the porosity has no obvious effect on it. Usually, the equilibrium pressure of Mg-H2 reaction rises with the increasing... the pressure difference between inlet pressure and equilibrium pressure (pinlet-peq) and the intrinsic reaction rate starts to decline. Even the local hydrogenation rate is decreased to zero when......
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J. Cent. South Univ. (2016) 23: 1535-1540 DOI: 10.1007/s11771-016-3205-y Equilibrium analysis of mixed passengers in urban railway network ZHANG Lu(张璐)1, WU Jian-jun(吴建军)1, SUN Hui-jun(孙会君)2 1..., sensitive passengers who consider route congestion choose travel route based on generalized cost. An equilibrium state is given by variational inequalities in terms of travel generalized cost, which......
