• Title/Summary/Keyword: 황산 코발트용액

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Adsorption of Ni(II), Co(II), and Mg(II) from Sulfuric Acid Solution by Diphonix Resin for the Utilization of Laterite Ore (라테라이트광 활용을 위한 황산용액에서 Diphonix 수지의 니켈, 코발트, 마그네슘 흡착)

  • Lee, Man-Seung;Kim, Sang-Bae;Chae, Jong-Gwee
    • Journal of the Mineralogical Society of Korea
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    • v.23 no.3
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    • pp.183-189
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    • 2010
  • It is of importance to separate Ni(II) and Co(II) from Mg(II) in solution which was leached from nickel laterite ore. In order to investigate the possibility of separating Ni(II) and Co(II) from Mg(II), adsorption behavior of the three metals from individual and mixed sulfate solutions was investigated by using Diphonix resin. The concentration of each metal in solution was fixed at 100 ppm and the pH of the sulfuric acid solution was changed from 5 to 7. At ambient temperature, the adsorption behavior of the three metal ions followed Langmuir adsorption isotherm. The loading capacity of Diphonix resin for the three metal ions was obtained from the Langmuir isotherm. Since adsorption behavior of the three metal ions from the mixed solution was similar to each other, it was found to be difficult to separate Ni(II) and Co(II) from Mg(II) by using Diphonix resin.

Separation of Ni(II), Co(II), Mn(II), and Si(IV) from Synthetic Sulfate and Chloride Solutions by Ion Exchange (황산과 염산 합성용액에서 이온교환에 의한 니켈(II), 코발트(II), 망간(II) 및 실리케이트(IV)의 분리)

  • Nguyen, Thi Thu Huong;Wen, Jiangxian;Lee, Man Seung
    • Resources Recycling
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    • v.31 no.3
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    • pp.73-80
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    • 2022
  • Reduction smelting of spent lithium-ion batteries at high temperature produces metallic alloys. Following solvent extraction of the leaching solutions of these metallic alloys with either sulfuric or hydrochloric acid, the raffinate is found to contain Ni(II), Co(II), Mn(II), and Si(IV). In this study, two cationic exchange resins (Diphonix and P204) were employed to investigate the loading behavior of these ions from synthetic sulfate and chloride solutions. Experimental results showed that Ni(II), Co(II), and Mn(II) could be selectively loaded onto the Diphonix resin from a sulfate solution of pH 3.0. With a chloride solution of pH 6.0, Mn(II) was selectively loaded onto the P204 resin, leaving Ni(II) and Si(IV) in the effluent. Elution experiments with H2SO4 and/or HCl resulted in the complete recovery of metal ions from the loaded resin.

Behavior of Cobalt Extraction from Cobalt Sulphate solution using Supercritical 2 (황산코발트용액(溶液)으로부터 초임계(超臨界CO2에 의한 코발트 추출거동(抽出擧動))

  • Shin, Shun-Myung;Joo, Sung-Ho;Sohn, Jeong-Soo;Kang, Jin-Gu
    • Resources Recycling
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    • v.20 no.6
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    • pp.78-82
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    • 2011
  • Supercritical $CO_2$($scCO_2$) extraction has a great possibility to be a new process to recover metal and to replace the existing leaching/solvent extraction processes. The cobalt extraction was carried out using $scCO_2$ from cobalt sulphate solution. The bis (2,4,4-trimethylpentyl) phosphinic acid and diethylamine ligands were used to extract cobalt ion in $scCO_2$. The recommended method consists of $scCO_2$/extractants complexation process and metal extraction process at 60, 200bar. Experimental results showed that the extraction efficiency of Co was increased by 16-99% with increasing the ligand amount.

Recovery of Cobalt from Waste Cathodic Active Material Generated in Manufacturing Lithium Ion Batteries by Hydrometallugical Process (리튬이온전지 제조공정의 폐양극활물질로부터 습식제련공정에 의한 코발트의 회수)

  • Swain Basudev;Jeong Jinki;Kim Min Seuk;Lee Jae-chun;Sohn Jeong-Soo
    • Resources Recycling
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    • v.14 no.6 s.68
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    • pp.28-36
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    • 2005
  • A hydrometallurgical process to leach cobalt from the waste cathodic active material, $LiCoO_{2}$, and subsequently to separate it by solvent extraction was developed. The optimum leaching conditions for high recovery of colbalt and lithium were obtained: 2.0 M sulfuric acid, 5 $vol.\%$ hydrogen peroxide, $75^{\circ}C$ leaching temperature, 30 minutes leaching time and an initial pulp density of 100 g/L. The respective leaching efficiencies for Co and Li were $93\%$ and $94.5\%$. About $85\%$ Co was extracted from the sulfuric acid leach liquor containing 44.72 g/L Co and 5.43 g/L Li, using 1.5 M Cyanex272 as an extractant at the initial pH 5.0 and in organic to aqueous phase ratio of 1.6:1 under the single stage extraction conditions. The Co in the raraffinate was completely extracted by 0.5 M Na-Cyanex272 at the inital pH 5.0, and an organic to aqueous phase ratio of 1;1. The cobalt sulfate solution of higher than $99.99\%$ purity could be recovered from waste $LiCoO_{2}$, using a series of hydrometallurgical processes: sulfuric acid leaching of waste $LiCoO_{2}$- solvent extraction of Co by Na-Cyanex 271 - scrubbing of Li by sodium carbonate solution - stripping of Co by sulfuric acid solution.

Separation of Co(II), Ni(II), and Cu(II) from Sulfuric Acid Solution by Solvent Extraction (황산용액에서 용매추출에 의한 코발트(II), 니켈(II) 및 구리(II) 분리)

  • Moon, Hyun Seung;Song, Si Jeong;Tran, Thanh Tuan;Lee, Man Seung
    • Resources Recycling
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    • v.31 no.1
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    • pp.21-28
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    • 2022
  • The smelting reduction of spent lithium-ion batteries results in metallic alloys of cobalt, nickel, and copper. To develop a process to separate the metallic alloys, leaching of the metallic mixtures of these three metals with H2SO4 solution containing 3% H2O2 dissolved all the cobalt and nickel, together with 9.6% of the copper. Cyanex 301 selectively extracted Cu(II) from the leaching solution, and copper ions were completely stripped with 30% aqua regia. Selective extraction of Co(II) from a Cu(II)-free raffinate was possible using the ionic liquid ALi-SCN. Three-stage cross-current stripping of the loaded ALi-SCN by a 15% NH3 solution resulted in the complete stripping of Co(II). A process was proposed to separate the three metal ions from the sulfuric acid leaching solutions of metallic mixtures by employing solvent extraction.

Recovery of Co and Ni from Strong Acidic Solution by Cyanex 301 (강산성용액에서 Cyanex 301에 의한 Co 및 Ni 회수 연구)

  • Cho, Yeon-Chul;Kim, Ki-Hun;Ahn, Jae-Woo
    • Resources Recycling
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    • v.30 no.6
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    • pp.28-35
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    • 2021
  • An experiment was conducted to separate or recover Co and Ni using Cyanex 301 from process by-products and waste resources containing Co and Ni. To separate and recover Co and Ni from simulated leaching solutions, 10 v/v% Cyanex 301 was used as an extractant in this study; Li was not extracted. At equilibrium pH 1.5 and a phase ratio (A/O) of 1.0, 0.44% of Mg and 11.57% of Mn were extracted, and more than 99% of Co and Ni were extracted. McCabe-Thiele diagram analysis confirmed that more than 99.9% of Co and Ni could be extracted simultaneously through two-stage extraction with an extraction phase ratio (A/O) of 2. It was possible to extract Mg and Mn simultaneously through the scrubbing process. In the scrubbing process, more than 99% of Mg and 87% of Mn were scrubbed using 0.05 M of H2SO4, and 99.9% of Mg and more than 80% of Mn were scrubbed using 0.05 M of HCl. In the stripping process, 93% of Co and 5% of Ni were stripped selectively by 3.0 M of H2SO4. However, when 8.0 M of HCl was used as a stripping solution, more than 99.9% of Co and more than 90% of Ni were stripped simultaneously.

Selective Extraction of Cobalt and Nickel in the Presence of Magnesium from Sulphate Solutions by Versatic Acid 10 (마그네슘이 함유된 황산용액에서 Versatic acid-10에 의한 코발트와 니켈의 선택적 추출)

  • Cho, Yeon chul;Ahn, Jae woo;Lee, Jae young
    • Resources Recycling
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    • v.29 no.4
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    • pp.51-57
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    • 2020
  • Separation of Co and Ni over Mg from the sulfuric acid solutions using Cyanex272, PC88A and Versatic acid 10 as an extractant was carried out. From the comparative studies about the extraction behavior of Co, Ni and Mg, Versatic acid 10 was superior to Cyanex272 and PC88A for the selective extraction of cobalt and nickel from the mixed solutions. About 98% of Ni and Co were extracted at equilibrium pH 7.0 and less than 5% of Mg was co-extracted by Versatic acid 10. McCabe-Thiele diagram indicated two stages requirement for Co and Ni extraction by 10% Versatic acid 10 at pH 7.0 and phase ratio (A/O) of 2.0. The loaded Co and Ni in organic phase was stripped effectively the sulfuric acid concentration above 70 g/L. 99.78% of cobalt and 98.42% of nickel were stripped.

Leaching of Cobalt and Nickel from Metallic Mixtures by Inorganic and Organic Acid Solutions (코발트와 니켈 금속혼합물로부터 무기산 및 유기산에 의한 침출)

  • Moon, Hyun Seung;Song, Si Jeong;Tran, Thanh Tuan;Lee, Man Seung
    • Resources Recycling
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    • v.30 no.2
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    • pp.53-60
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    • 2021
  • Leaching experiments from single metal and metallic mixtures were conducted to develop a process for the recovery of cobalt, copper, and nickel in spent lithium ion batteries. Inorganic and organic acid solutions without oxidizing agents were employed. No copper was dissolved in the absence of an oxidizing agent in the leaching solutions. The leaching condition to completely dissolve single metal of cobalt and nickel was determined based on acid concentration, reaction temperature and time, and pulp density. The leaching condition to dissolve all of cobalt and nickel from the metallic mixtures was also obtained. Leaching of the metallic mixture with methanesulfonic acid led to selective dissolution of cobalt at low temperatures.

Separation of Copper & Cobalt by Solvent Extraction in Organic Acid Leaching Solution (유기산 침출용액에서 용매추출법에 의한 구리 및 코발트 분리)

  • Kim, Tae-Young;Ryu, Seong-Hyung;Ahn, Jae-Woo
    • Resources Recycling
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    • v.24 no.3
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    • pp.3-10
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    • 2015
  • A study has been made on the recovery & separation of cobalt and copper from organic acid leaching solution by solvent extraction. The experimental parameters such as the equilibrium pH, concentration of extractant and phase ratio were observed. Copper was extracted using LIX 84 and Cobalt was extracted using cyanex 272 and versatic acid 10. Experimental results showed that extraction percent of copper was 99% at above eq. pH 2.0 and then more than 90% of cobalt were extracted by cyanex 272 in eq. pH 6.0 and versatic acid 10 in eq. pH 7.5. Stripping of copper and cobalt from the loaded organic phases can be accomplished by sulfuric acid as a stripping reagent and 120 ~ 150 g/L of $H_2SO_4$ was effective for the stripping of copper and cobalt respectively. Finially, the basic optimal process for recovery of copper and cobalt from the bio-leaching solution was proposed.

Inhibition Effects of Some Amino Acids on the Corrosion of Cobalt in Hydrochloric Acid and Sulfuric Acid (염산과 황산 용액에서 코발트의 부식에 미치는 아미노산의 부식억제효과)

  • Park, Hyunsung;Kim, Younkyoo
    • Journal of the Korean Chemical Society
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    • v.63 no.5
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    • pp.327-334
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    • 2019
  • Inhibition effects of cysteine(Cys), methionine(Met), and histidine(His) on the corrosion of cobalt were investigated in deaerated 0.5 M HCl and 0.5 M $H_2SO_4$ solution. All the inhibition efficiency (IE) in the amino acids for the cobalt corrosion depended on the mixed inhibition. However, IE in the solution of $H_2SO_4$ depended more on the anodic and in the solution of HCl on the cathodic inhibition. Amino acid adsorption process on cobalt surface in the solution can be explained by modified Langmuir isotherm. The molecules of histidine dissolved in both of the solution were physically adsorbed due to the electrostatic interaction between the surface of {$Co-Cl^{-{\delta}}$} and the {$-NH_3{^+}$} or {$-NH^+=$} of His. However the other cases of adsorption in this investigation can be explained by chemical adsorption between the empty d-orbital of Co and the lone pair of electron in S-atom in Cys and Met.