JPS5742525A - Treatment of oil-containing electrolytic cleaning waste liquid - Google Patents
Treatment of oil-containing electrolytic cleaning waste liquidInfo
- Publication number
- JPS5742525A JPS5742525A JP11916380A JP11916380A JPS5742525A JP S5742525 A JPS5742525 A JP S5742525A JP 11916380 A JP11916380 A JP 11916380A JP 11916380 A JP11916380 A JP 11916380A JP S5742525 A JPS5742525 A JP S5742525A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- sio
- oil
- waste liquid
- extracted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Silicon Compounds (AREA)
Abstract
PURPOSE: To treat oil-containing electrolytic cleaning waste liquid, economically, and to reuse the effective components, by introducing CO2 gas into the liquid to effect the solid-liquid separation, concentrating and calcining the extracted liquid to recover Na2CO3, and calcining the residue to recover SiO2.
CONSTITUTION: In the electrolytic cleaning of steel, oil-containing waste liquid is extracted from the line as deterioration progresses, and bubbled with CO2-containing gas to precipitate the water-containing silicic acid (SiO2.nH2O) in the liquid according to the reaction of formula. The soild-liquid separation of the waste liquid with a centrifugal separator, etc. gives the extracted liquid (an aqueous solution of Na2CO3) and the residue (oil+H2SiO3). The extracted liquid is concentrated and the resulted precipitate is calcined at 300W400°C to recover the solid Na2CO3. The residue is calcined at ≥1,100°C, and SiO2 is recovered. The recovered SiO2 is about several mm in diameter, and can be reused as a part of the sintering raw material, and the recovered Na2CO3 can be used as a part of the slagging agent for the preliminary treatment of molten iron discharged from a blast furnace.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11916380A JPS595680B2 (en) | 1980-08-29 | 1980-08-29 | Treatment method for oil-containing electrolytic cleaning waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11916380A JPS595680B2 (en) | 1980-08-29 | 1980-08-29 | Treatment method for oil-containing electrolytic cleaning waste liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5742525A true JPS5742525A (en) | 1982-03-10 |
| JPS595680B2 JPS595680B2 (en) | 1984-02-06 |
Family
ID=14754467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11916380A Expired JPS595680B2 (en) | 1980-08-29 | 1980-08-29 | Treatment method for oil-containing electrolytic cleaning waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS595680B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964445A (en) * | 2014-05-05 | 2014-08-06 | 临沂晟泉矿业有限公司 | Quartz sand pickling comprehensive recycle method |
-
1980
- 1980-08-29 JP JP11916380A patent/JPS595680B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964445A (en) * | 2014-05-05 | 2014-08-06 | 临沂晟泉矿业有限公司 | Quartz sand pickling comprehensive recycle method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS595680B2 (en) | 1984-02-06 |
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