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(CCS) study. The stripping of total rare earth from loaded organic phase(LO) was conducted using HCl solution. Mc-Cabe Thiele diagram study carried out at A:O=1:5 using 4 mol/L HCl showed that three theoretical stages were needed for quantitative stripping of total rare earth. The subsequent stripped solution resulted thus led to contain total rare earth of 5.6 g/L indicating a very high enrichment......
(CCS) study. The stripping of total rare earth from loaded organic phase(LO) was conducted using HCl solution. Mc-Cabe Thiele diagram study carried out at A:O=1:5 using 4 mol/L HCl showed that three theoretical stages were needed for quantitative stripping of total rare earth. The subsequent stripped solution resulted thus led to contain total rare earth of 5.6 g/L indicating a very high enrichment......
with the stripping rate 99% on the following conditions:5 mol/L NaOH stripping for 30 min at a phase ratio A/O:1 at 90℃.Finally,H2 C2 O4 was used to further purify the back extraction product and Sc2(C2 O4)3......
硫酸浓度对镍反萃率的影响 Fig. 8 Effect of sulfuric acid concentration on stripping rate of nickel 2) 镍的反萃等温线 在温度25 ℃,反萃时间10 min,硫酸浓度为0.1 mol/L的条件下,采用相比法测定镍的反萃等温线.相比实验显示,镍反萃率随相比增大而减小.相比从1:2增大到2:1,镍反萃率由... Fig. 9 Stripping isotherm of nickel 2.2 萃镍后液萃取分离锌的行为 2.2.1 萃取剂浓度对锌萃取率的影响 通过上述萃取工序,镍几乎被萃取完全.采用HA+TRPO体系对萃余液中锌进行萃取,以获取锌萃取段的最佳条件.在温度25 ℃,萃取时间t=10 min,初始pH=7.2,相比O/A=1:1,被萃水相中[NH3]T≈3 mol......
; Optical photo(a) and XRD pattern(b) of membrane electrodeposition tin from circulating tin stripping solution 表2 阳极电解后液主要化学成分分析 Table 2 Chemical composition of anolyte solution after..., LEI Jie, YANG Sheng-hai, HE Jing, TANG Chao-bo, CHEN Yong-ming. Tin-stripping solution based on tin hydrochloride system and method tin recovery from waste tin-stripping solution: China......
is insignificant.The extraction of HCl duringthe stripping of gallium is mainly dependent on the concentration of aqueous hydrochloric acid and the con-tent of N601.Under the given conditions......
, and the stripping of molybdenum with 60 g L-1 ammonium acid carbonate solution is 94.67 % at O/A ratio of 2:1 and contact time of 10 min.关键词:......
. The synergistic effect is explained by the formation of adduct between zinc chelates and trialkylphosphine oxide. The thermodynamic data show that the extraction reaction is exothermic and stripping......
Synergistic extraction of rare earth by mixtures of 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester and di-(2-ethylhexyl) phosphoric acid from sulfuric acid medium黄小卫,李建宁,龙志奇,张永奇,薛向欣,朱兆武摘 要:The extraction of Nd3+ and Sm3+, including the extraction and stripping capability as well as the separation effect of Nd3+ or Sm3+, from a sulfuric acid medium......
[1,5-a]quinazolin-6(7H)-one {TQ} dissolved in methylene chloride. Stripping was carried out by 20% sodium hydroxide. A rare earth cake was produced by oxalic acid precipitation. Its purity reached 87.3......
