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obtained by Raman spectroscopy and transmission electron microscopy(TEM), and the results suggested that the NDs experience a stripping process before a special solid-reaction with surface iron atoms from......
and stripping antibacterial mechanism.The result also indicated that this new inorganic antibacterial material had good thermal and light stability.关键词:......
TOPS-99 shows requirement of 4-stages at A:O = 3:2. Stripping with oxalic acid precipitates Sm-oxalate which is calcined at 800 ℃ to produce Sm2 O3. Co3 O4 is recovered from the raffinate through......
effectively and the extraction rate reaches 99.78% at one stage. Using sulfuric acid solution (2.00 mol/L) as stripping agent, the stripping rate of copper reaches 97.51% after three series...好的反萃效果,理论上至少需要三级逆流反萃.本研究模拟了三级逆流萃取过程,结果列于表3.由表3可知,经过模拟三级逆流萃取过程,铜的反萃率达到97.51%,反萃液中铜的浓度达到4.749 g/L,而铁的浓度可以忽略,因此,反萃液可以直接电积产铜.用LK-C2萃取回收废线路板酸性浸出液中的铜是可行的. 表3 负载有机相的反萃取 Table 3 Stripping......
the property of the iron extract. The loading iron (Ⅱ) can not be stripped by water but dilute acidic solution. Co (Ⅱ) , Fe (Ⅱ) and Mn (Ⅱ) could be separated by using scrubbing and stripping...与5%的有机酸HB是最佳配比. 表1 改性剂对钴 (Ⅱ) , 铁 (Ⅱ) 萃取, 洗涤, 反萃的影响 Table 1 Effects of modifier on extraction, scrubbing and stripping of Co (Ⅱ) and Fe (Ⅱ) Modifier Modifiercontent......
″-pentaoctyldiethylenetriamine and N235 were investigated. The performance of stripping of molybdenum with N,N,N′,N″,N″-pentaoctyldiethylenetriamine was researched. The solution of 2 mol/L NaOH was used... and is similar to N235. The stripping of Mo reaches 97.48% with volume ratio V(O)/V(A) of 2:1 at 25 ℃ for 5 min in single stage. The mass concentration of molybdenum in strip liquor reaches 55 g/L. Key words: N,N......
, Changsha 410083, China) Abstract: Stripping solution of Lanping zinc oxide ore was simulated with zinc sulfate and sulphuric acid. The effect of ammonium nitrogen and organic impurities such as 260......
system and TBP as the extractant, the extraction rate of Ga is over 99%. When 1 mol/L NaCl is used as stripping agent, the ratio of organic phase to water phase is 2 to 1, the stripping rate also could.../A on extraction rate and stripping rate of Ga 由图5可知,最佳萃取相比V有?V水=1?3,最佳反萃相比V有?V水=2?1,在此条件下,镓的1次萃取率近99%,1次反萃率近98.5%,总收率在98%左右,镓的质量浓度也提高至1.56 g/L以上. 2.2.4 TBP体积分数对镓萃取率的影响 由于TBP的配位氧原子的碱性比醚,酮和醇中配位氧原......
/VA is 2:1. The total stripping rates of Sb and Bi are up to 98.4% and 96.5% respectively after the organic phase of seven stages counter current extraction equilibrium is treated with ammonia precipitation stripping, water scrubbing and acid treatment. The organic phase can be recycled. Key words: Cl-; copper electrolyte; N235; Sb; Bi 在铜电解精炼过程中,铜阳极板中的Sb和Bi杂质金属与铜的氧化电位接近,易发生电化学溶解进入电解液中,并随着电解液的循环不断富......
and stripping characteristics of Versatic 10 and its mixtures with Cyanex 301 were investigated for the recovery of cobalt and nickel from sulfate solutions containing magnesium and calcium. The optimum... and calcium in laterite leach solutions. Since the extractant was conducted at low pH, no base was required for pH adjustment. However, the stripping of nickel and cobalt has to be operated at high......
