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구리, 니켈 및 코발트를 함유한 염산용액으로부터 LIX84에 의한 구리의 용매추출
안종관,안재우,오영주,이만승 대한금속재료학회 2004 대한금속·재료학회지 Vol.42 No.3
Solvent extraction experiments with LIX84 have been performed to separate copper from synthetic hydrochloric acid solutions containing copper, nickel and cobalt. Experimental conditions such as solution pH, the concentration of chloride ion and LIX84 and manganese ion, the volume ratio of organic to aqueous phase and pH of stripping solution have been investigated. The optimum conditions for the separation of copper from nickel and cobalt were obtained from the experimental results.
고농도 니켈 침출액으로부터 Na-PC88A에 의한 Co, Mn 및 Zn의 분리에 관한 연구
安鍾寬,朴慶鎬,孫廷秀,안재우 대한금속재료학회 2001 대한금속·재료학회지 Vol.39 No.12
Solvent extraction experiments for the separation of impurities from Ni-rich solution were carried out for manufacturing of high purity Ni compounds from acid leaching solution of spent Ni-Cd secondary battery. Synthesised and actual leaching solution were used as aqueous phases and PC88A saponified by sodium in kerosene were used as organic phases. The extraction order is Zn>Mn>Co>Ni and extraction percentage of metal ions was increased with an increase of the concentration of extractant, initial pH of aqueous phase and ratio of O/A The separation of Ni and other impurities was effectively accomplished at the condition of extraction stage = 1, O/A = 1, saponified percent 50%, initial pH 5.0, concentration of extractant 1.0M.
Mixer-Settler를 이용한 연속공정에 의한 니켈과 코발트의 추출
안재우,안종관,이만승 대진대학교 첨단소재연구소 2001 첨단소재연구소논문집 Vol.4 No.-
Extraction behaviors of Co and Ni in hydrochloric acid solutions by Alamine336(Teritary amine) have been investigated in mixer-settler. The feeding aqueous solution contained 5.0g/L nickel and 0.7g/I, Co in 5.0M hydrochliric acid solution. The organic phase being used for extractant comprised 20 vol. % Alamine336(Teritary amine) in Xylene. The 10 mixer-settler units of count current type consist of 3 extraction, 2 scrubbing, 3 stripping and 2 washing sections. The extraction percent of Co was 99 % but Ni was not extracted during 3 steps. Ni co-extracted with co was removed in 2 steps of scrubbing section by 6M hydrochloric acid solution from organic phase. Over 92% of Co from organic phase was stripped by 0.1M hydrochloric acid solution in 2 volume ratio of organic and aqueous phase. After stripping, the organic phase that was washed by 3.0 M hydrochloric acid solution in 2 volume ratio of organic and aqueous phase could be recycled for the organic solution.
Nickel 및 Cobalt가 함유된 염산용액중에서 Alamine336에 의한 Fe, Mn 및 Zn의 분리
안재우,안종관,박경호,손정수 대한금속재료학회 2003 대한금속·재료학회지 Vol.41 No.6
The separation and recovery of cobalt and nickel from hydrochloric leaching solutions of manganese nodules were imitated by solvent extraction using Alamine336 in Xylene. The behavior of impurities such as iron, zinc, copper and manganese was also investigated. With the increase of chloride ion concentration, cobalt was selectively extracted from nickel owing to the difference of chlorocomplex in solution and the minimum chloride ion was 5.0M. But in this extraction step, the impurity metals such as copper, iron, manganese, zinc were also co extracted in the organic phase. However, co-extracted metals in the organic phase could be effectively separated in the scrubbing and stripping step. Manganese and nickel were effectively removed in the scrubbing step with 6.0M hydrochloric solutions but copper, iron and zinc were loaded in the organic phase with cobalt. Finally, the metal-bearing organic phase was contacted with the hydrochloric strip solution to recover the loaded cobalt. The impurity metals were effectively removed in this step with controlling the concentration of chloride ions in the strip solution. From the experiment, The behaviors of impurities on each of operation steps in extraction, scrubbing and stripping processes were investigated. Consequently the optimum condition for the separation of cobalt from hydrochloric solution were proposed.
안재욱,安種寬,李晩承 대한금속재료학회 2002 대한금속·재료학회지 Vol.40 No.1
A study has been made on the recovery of nitric acid and valuable metals such as Cu, Sn and Pb from the spent nitric etching solutions. The nitric acid was extracted effectively by TBP but the heavy metals such as Fe, Cu, Sn and Pb were not extracted by TBP from the spent nitric etching solutions. From the experimental results, 95% of nitric acid in spent etching solution was extracted at O:A ratio of 3:1 in five stages by 60% TBP, and 98% of nitric acid was stripped from the loaded organic phase at O:A ratio of 1:1 in four stages by distilled water. After extraction of nitric acid, Cu was effectively recovered as a metal by electrowinning and Sn was successfully removed by precipitation methode as the form of hydroxide or hydrated oxide by adjusting pH of the raffinate solution. Finally, Pb was recovered by cementation with iron scrap at above 65℃. Parameters controlling the cementation process, such as temperature, pH and the effect of the additives were investigated.
안재우,마창익,안종관 대진대학교 1999 大眞論叢 Vol.7 No.-
Electrodeposition experiments of gradually composite alloys were conducted using rotating disc geometry. Effects of rotating speed and potential on the composition of alloys were studied. Mechanical properties and corrosion resistance of the gradually composite alloys were compared with those of the normally deposited alloys. Zinc content of Zn-Ni alloys increased as increasing disc rotation speed and voltage. Corrosion resistance and adhesion of the gradually composite alloys for all the tested alloys were better than the normally deposited ones.
함구리 황산폐액으로부터 LIX84-Kerosene-Span80-H₂SO₄계 유화형 액막법에 의한 구리의 분리 농축
안종관,안재우,신선명,김동진 대한금속재료학회 2004 대한금속·재료학회지 Vol.42 No.4
The separation and extraction of copper from waste water solutions by the liquid surfactant membrane process using LM84 as an extractant and Span 80 as a surfactant were investigated . In extraction, the extraction rate of copper was greatly accelerated by the presence of sodium acetate and with the increase of pH in the aqueous feed solution. The optimum concentrations of LIX84 and Span 80 in the membrane phase were 7-10 vol. % and 2.5-3vol. %, respectively. Experiments also showed that the concentration ratio of copper was greatly enhanced with the decrease of the ratio of V_(e) and V_(w) and with the decreasing of A/O ratio. After the extraction process, the concentration of copper in the raffinate solution reduced to 1-2 ppm, and the concentration of copper in the internal aqueous solution increased to 20 gll. (Received February 11, 2004)
염산용액에서 Alamine336에 의한 니켈과 코발트의 분리
安鍾寬,安在禹,李晩承 대한금속재료학회 2002 대한금속·재료학회지 Vol.40 No.7
Solvent extraction experiments with Alamine336 from hydrochloric acid solutions containing cobalt and nickel have been performed to separate both metal ions. Cobalt was preferentially extracted from nickel by Alamine336 due to the difference betwen the complex formation constant of cobalt-chloro and nickel-chloro complex. The extraction percentage of cobalt and nickel were greatly affected by the concentration of chloride ion but were independent of solution pH when the chloride salt of Alamine336 was used as extractant. In the experimental ranges, the separation factor was increased with reaction temperature. The stripping percentage of cobalt decreased with the concentration of HCl in stripping solution.
최재웅,안종관,안재우 대진대학교 첨단소재연구소 2000 첨단소재연구소논문집 Vol.3 No.-
Diamond particles in the Ni sulfamate electrolyte solution were deposited with nickel onto steel wire and codeposition mechanism of diamond and nickel was studied also under rotating disc electrode geometry. Composite coating is the method that codeposit inert particles in the electrolyte with metal matrix to improve material properties such as wear resistance, corrosion resistance and hardness. Effect of potential, initial diamond concentration and rotating speed on Ni-diamond composite coatings were studied. Increasing of initial diamond concentration and rotating speed enhance the codeposition ratio of diamond and mass transfer of nickel ions. As diamond in the deposits increase, hardness of deposits increase, and friction coefficient is lowered. Zeta potential of deposits increase, and friction coefficient is lowered.