Purification Technology of Crude-Zinc Oxide Obtained in Recycling Process of by-Products containing Zn and Fe

The present invention relates to a method for recovering high purity zinc oxide from zinc-byproducts containing iron. The crude zinc oxide derived from zinc-byproduct containing iron obtained from electric furnace steelmaking dusts are made into slurry to be choridizing-roasted after magnetization s...

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Bibliographische Detailangaben
Hauptverfasser:	YOON, SHIN AE, JOO, HWANG YOON
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F INORGANIC CHEMISTRY MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROMSOLID MATERIALS OR FLUIDS METALLURGY PERFORMING OPERATIONS SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS TRANSPORTING
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Beschreibung
Zusammenfassung:	The present invention relates to a method for recovering high purity zinc oxide from zinc-byproducts containing iron. The crude zinc oxide derived from zinc-byproduct containing iron obtained from electric furnace steelmaking dusts are made into slurry to be choridizing-roasted after magnetization selection, or mixed with a chlorine source so that impurities containing iron are calcined as a form of iron chloride in a calcining furnace at a low temperature range to firstly remove Fe component, which is the main impurity in the crude zinc oxide. Through a post-treatment, zinc oxide having a purity of 99% or more is manufactured. 본 발명은 전기로 제강분진 등에서 얻은 함철아연 부산물로부터 유래한 조산화아연을 슬러리화시켜 자력선별한 후 염화배소시키거나 염소 소스를 혼합하여 배소로 내 저온 영역에서 철 함유 불순물을 철 염화물 형태로 배소시켜 조산화아연 중의 주요 불순물인 Fe 성분을 우선 제거하고 이어 후처리 공정을 통해 99% 이상의 고순도 산화아연을 제조하는 함철아연 부산물로부터 고순도 산화아연의 회수방법에 관한 것이다.