KR970043338A - 밀 스케일을 이용한 산세 폐액 정제방법 - Google Patents
밀 스케일을 이용한 산세 폐액 정제방법 Download PDFInfo
- Publication number
- KR970043338A KR970043338A KR1019950066202A KR19950066202A KR970043338A KR 970043338 A KR970043338 A KR 970043338A KR 1019950066202 A KR1019950066202 A KR 1019950066202A KR 19950066202 A KR19950066202 A KR 19950066202A KR 970043338 A KR970043338 A KR 970043338A
- Authority
- KR
- South Korea
- Prior art keywords
- waste liquid
- mill scale
- pickling
- purification method
- liquid purification
- Prior art date
Links
Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/36—Regeneration of waste pickling liquors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/02—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor with moving adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2215/00—Separating processes involving the treatment of liquids with adsorbents
- B01D2215/02—Separating processes involving the treatment of liquids with adsorbents with moving adsorbents
- B01D2215/021—Physically moving or fluidising the adsorbent beads or particles or slurry, excluding the movement of the entire columns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Compounds Of Iron (AREA)
Abstract
철강 산세과정에서 밸출되는 산세 폐액중의 불순물을 제거하는 산세폐액 정제방법으로서, 특정 성분함량을 갖는 밀스케일을 이용한다. 밀스케일을 이용하여 흡착성이 강한 Fe(OH)3를 형성시킨 다음 Fe(OH)3가 폐액내의 불순물을 흡착 제거한다.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
Claims (1)
- 제철소의 철강산세공정에서 발생하는 산세폐액을 정제하는 방법에 있어서, α-Fe2O3함량이 10%이하이며, 금속 철(Fe)함량이 3.3%이상인 밀스케일을, 폐산내의 HCl몰비에 대하여 FeO로 환산한 밀스케일의 몰비가 0.5배이상되게 투입한후 30-90℃에서 20-80시간 용해하여 pH를 2.5-5되게 상승시켜 Fe(OH)3 스러지를 형성시킨 다음, 그 Fe(OH)3 스러지에 폐액내의 불순물이 흡착되게 하고, 불순물이 흡착된 상기 Fe(OH)3 스러지로 여과함을 특징으로 하는 산세폐액 정제방법
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950066202A KR100368246B1 (ko) | 1995-12-29 | 1995-12-29 | 밀스케일을이용한산세폐액정제방법 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950066202A KR100368246B1 (ko) | 1995-12-29 | 1995-12-29 | 밀스케일을이용한산세폐액정제방법 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR970043338A true KR970043338A (ko) | 1997-07-26 |
| KR100368246B1 KR100368246B1 (ko) | 2003-05-12 |
Family
ID=37416299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950066202A KR100368246B1 (ko) | 1995-12-29 | 1995-12-29 | 밀스케일을이용한산세폐액정제방법 |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100368246B1 (ko) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990050174A (ko) * | 1997-12-16 | 1999-07-05 | 이구택 | 산세폐액의 정제방법 |
-
1995
- 1995-12-29 KR KR1019950066202A patent/KR100368246B1/ko not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR100368246B1 (ko) | 2003-05-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20090106 Year of fee payment: 7 |
|
| LAPS | Lapse due to unpaid annual fee |