KR960017519A - Method for preparing high purity ferric chloride aqueous solution using waste acid - Google Patents
Method for preparing high purity ferric chloride aqueous solution using waste acid Download PDFInfo
- Publication number
- KR960017519A KR960017519A KR1019940030759A KR19940030759A KR960017519A KR 960017519 A KR960017519 A KR 960017519A KR 1019940030759 A KR1019940030759 A KR 1019940030759A KR 19940030759 A KR19940030759 A KR 19940030759A KR 960017519 A KR960017519 A KR 960017519A
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- KR
- South Korea
- Prior art keywords
- aqueous solution
- waste acid
- ferric chloride
- solution
- high purity
- Prior art date
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- Inorganic Compounds Of Heavy Metals (AREA)
- Compounds Of Iron (AREA)
Abstract
본 발명은 폐산을 가열하고, 농축시킨 농축폐산을 냉각하여 슬러지를 생성시키고, 이 수용액에 철분말 및 석면을 투입하여 정제하므로서, 수용액내의 불순물이 제거된 고순도 염화제일철 수용액의 제조방법을 제공하고자 하는데, 그 목적이 있다.The present invention is to provide a method for producing a high-purity ferric chloride aqueous solution in which impurities in the aqueous solution are removed by heating waste acid, cooling the concentrated concentrated acid to produce sludge, and purifying the iron powder and asbestos in the aqueous solution. , Its purpose is.
상기 목적을 달성하기 위한 본 발명은 폐산을 이용하여 염화제일철 수용액을 제조하는 방법에 있어서, 상기 폐산을 60℃이상의 온도로 가열한 후 12시간 이상 정치시켜 슬러리를 생성시키는 단계; 상기 정치된 수용액에 철분말을 투입하여 수용액의 pH를 2이상으로 조절하여 수용액중의 염화제이철을 모두 염화제일철로 환원시키는 단계; 환원된 수용액에 공기를 취입하여 1차 여과하는 단계; 1차 여과된 수용액에 석면을 5~35g/1로 투입하여 완전 혼합이 되도록 교반한 후, 이 수용액을 통상의 방법으로 고액분리하여 정제하는 단계를 포함하여 구성되는 폐산을 이용한 고순도 염화제일철 수용액의 제조방법에 관한 것을 그 요지로 한다.In order to achieve the above object, the present invention provides a method for producing an aqueous ferric chloride solution using waste acid, the step of heating the waste acid to a temperature of 60 ℃ or more and then left for at least 12 hours to produce a slurry; Injecting the iron powder in the settled aqueous solution to adjust the pH of the aqueous solution to 2 or more to reduce all the ferric chloride in the aqueous solution to ferrous chloride; Primary filtration by blowing air into the reduced aqueous solution; Asbestos 5 ~ 35g / 1 to the primary filtered aqueous solution was stirred to be completely mixed, and then the aqueous solution of the high purity ferric chloride aqueous solution using waste acid comprising the step of purifying the solid solution by a conventional method The thing regarding a manufacturing method shall be the summary.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제1도는 본 발명에 따른 제조공정도.1 is a manufacturing process diagram according to the present invention.
제2도는 본 발명에 의한 슬러지 생성단계에서 가열온도 및 정치시간 변화에 따른 농축폐산 용액중으로부터 제거된 Si의 농도변화량을 나타내는 그래프.2 is a graph showing the concentration change of Si removed from the concentrated waste acid solution according to the change in heating temperature and settling time in the sludge production step according to the present invention.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940030759A KR0128122B1 (en) | 1994-11-22 | 1994-11-22 | Method of processing the iron chloride liquid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940030759A KR0128122B1 (en) | 1994-11-22 | 1994-11-22 | Method of processing the iron chloride liquid |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960017519A true KR960017519A (en) | 1996-06-17 |
KR0128122B1 KR0128122B1 (en) | 1998-04-01 |
Family
ID=19398631
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940030759A KR0128122B1 (en) | 1994-11-22 | 1994-11-22 | Method of processing the iron chloride liquid |
Country Status (1)
Country | Link |
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KR (1) | KR0128122B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100280262B1 (en) * | 1996-12-18 | 2001-03-02 | 이구택 | Manufacturing method of high purity ferric chloride solution |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100345730B1 (en) * | 1997-12-19 | 2002-09-18 | 주식회사 포스코 | Fabrication method of high grade iron oxide |
-
1994
- 1994-11-22 KR KR1019940030759A patent/KR0128122B1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100280262B1 (en) * | 1996-12-18 | 2001-03-02 | 이구택 | Manufacturing method of high purity ferric chloride solution |
Also Published As
Publication number | Publication date |
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KR0128122B1 (en) | 1998-04-01 |
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