Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Recovery of Pt from the Chloride Leaching Solution of Spent Catalysts by using Column Extractor

폐촉매(廢觸媒) 염산침출액(鹽酸浸出液)에서 컬럼형 추출기(抽出器)에 의한 백금(白金) 회수(回收)

  • Sun, Pan-Pan (Department of Advanced Materials Science and Engineering, Mokpo National University) ;
  • Lee, Man-Seung (Department of Advanced Materials Science and Engineering, Mokpo National University)
  • 손반반 (목포대학교 공과대학 신소재공학과) ;
  • 이만승 (목포대학교 공과대학 신소재공학과)
  • Received : 2013.07.09
  • Accepted : 2013.08.21
  • Published : 2013.12.31
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Abstract

In order to recover Pt from the hydrochloric acid leaching solution of spent catalysts, bench scale Karr reciprocating column was employed. At an optimum flow rate and vibration frequency, iron and Pt was completely extracted by using TBP and Aliquat 336. At the same vibration frequency, iron and Pt was completely stripped by HCl and $HClO_4$ after adjusting the flow rate. In the case of extraction of HCl from the raffinate with TEHA, it was difficult to maintain the stability of the column extractor. A comparison of the operation results between column extractor and mixer-settler is reported.

폐촉매 염산 침출액으로부터 백금을 회수하기 위해 벤치규모의 Karr 왕복 추출기를 사용하였다. 최적의 유량속도와 진동 빈도에서 철과 백금은 TBP와 Aliquat 336에 의해 모두 추출되었다. 같은 진동 빈도에서 유량을 조절함으로써 염산과 과염소산을 사용하여 철과 백금을 모두 탈거하였다. TEHA를 사용하여 추출여액으로부터 염산을 추출하는 경우 컬럼 추출기의 안정성을 유지하기 어려웠다. 컬럼 추출기와 mixer-settler에 의한 조업 결과를 비교하였다.

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References

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