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Preparation of Al(OH)3 by ion membrane electrolysis and precipitation of sodium aluminate solution with seeds LI Yuan-gao(李元高)1, 2, CHEN Qi-yuan(陈启元)2, WANG Song-sen(王松森)2, YIN Zhou-lan(尹周澜)2...; Abstract: The preparation of Al(OH)3 by the ion exchange membrane electrolysis followed by the precipitation of sodium aluminate solution with seeds......
;UV-vis spectra of sodium aluminate solution at room temperature 对比紫外光谱图可以明显发现,除了220 nm,260 nm处的紫外吸收峰外,高苛性比(αk=4.44)溶液在370 nm处出现较弱吸收峰,且主要在中,低浓度的溶液中出现;高浓度溶液(≥300 g/L)在320~340 nm区间出现较强吸收峰,且随着苛性比的增加会发生一定的...外光谱随时间的变化 Fig. 2 UV-vis spectra of concentrated sodium aluminate solution with time 2.3 量子化学计算结果 除了反应(1)~(3),文献[14, 19-20]中对于铝酸钠溶液自发分解机制的推测还包括如下反应: → (4......
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Activity of NaOH in Sodium Aluminate Solutions陈念贻,柳妙修摘 要:<正> 1.IntroductionSodium aluminate solution is one of themost important intermediate products in al-uminium metallurgy.The structure of so-dium aluminate solutions is rather compli-cated.Various anionic species,includingAl(OH)4-,Al(OH)6-3 and[(OH)3-Al-O-Al(OH)3]2- are co-existent......
. A systerm and method of removal of sodium oxalate from sodium aluminate solution: China, 200810011314.6[P]. 2008-05-08. [10] THE P J, BUSH J F. Solubility of sodium oxalate in Bayer liquor and a method...:A Establishment and application of calculation model of sodium oxalate solubility in sodium aluminate solution LI Xiao-bin1, 2, XU Wang1, 2, ZHANG Yu-tong1, 2, QI Tian-gui1, 2 (1. School of Metallurgy......
of ultrasonic induced ·OH free radical with ultrasonic processing time and the concentration of sodium aluminate liquor were discussed. The results show that ·OH free radicals can be only produced in relative diluted sodium aluminate liquor. With the processing time prolonging, the yield of ultrasonic induced ·OH free radical increases, but the yield does not change when the processing time......
preparation by deep carbonation decomposition of spent liquor from carbonation of sodium aluminate solutions LI Xiaobin, LIU Nan, ZHOU Qiusheng, QI Tiangui, LIU Guihua, PENG Zhihong (School of Metallurgy and Environment, Central South University, Changsha 410083, China) Abstract: Fibrous dawsonite was prepared by deep carbonation decomposition of spent liquor from carbonation of sodium aluminate......
): 134-138. [10] ZENG Ji-shu, YIN Zhou-lan, CHEN Qi-yuan. Intensification of precipitation of gibbsite from seeded caustic sodium aluminate liquor by seed activation and addition of crown ether[J...: The effect of ethers additive B35 on the seeded precipitation of sodium aluminate solution was investigated, the structure of the sodium aluminate solution was analyzed by FTIR, the zeta potential......
] WILLIAMS S F. Adsorbent combinations for enhanced removal of sodium oxalate from Bayer process spent liquor: US, US5728180A [P]. 1998-03-17. [18] SOIRAT A. Process for purifying sodium aluminate solutions...Trans. Nonferrous Met. Soc. China 27(2017) 1878-1887 Behavior of calcium oxalate in sodium aluminate solutions Gui-hua LIU, Wen-bo DONG, Tian-gui QI, Qiu-sheng ZHOU, Zhi-hong PENG, Xiao-bin LI School......
temperatures Fig.3 Precipitation of aluminate sodium liquor with common seeds The spectral dimension with ultrasound at 55 ℃ is a little larger than that without ultrasound in Table 2, while... aluminate solutions with washed seeds Table 4 Precipitation ratio of caustic aluminate solutions with washed seeds Fig.4 Precipitation of aluminate sodium liquor with washed seeds at different......