JPS57171612A - Quick decision method for expansion collapsing property of converter slag - Google Patents
Quick decision method for expansion collapsing property of converter slagInfo
- Publication number
- JPS57171612A JPS57171612A JP5503681A JP5503681A JPS57171612A JP S57171612 A JPS57171612 A JP S57171612A JP 5503681 A JP5503681 A JP 5503681A JP 5503681 A JP5503681 A JP 5503681A JP S57171612 A JPS57171612 A JP S57171612A
- Authority
- JP
- Japan
- Prior art keywords
- converter slag
- expansion
- collapsing property
- slag
- road material
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/36—Processes yielding slags of special composition
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
Abstract
PURPOSE:To decide whether converter slag is adequate or inadequate as a road material by expansion collapsing property quickly in the stage of measuring the expansion collapsing property of the converter slag by drying the compaction molding of the slag in a dryer under specific conditions and observing the cracking of the surface thereof. CONSTITUTION:Whether converter slag is usable as a material for roads or not on account of its expansion collapse by the hydration reaction of unslagged lime, etc. contained thereon, and the result thereof is used as a criterion for shipping. In this case, the sample of the converter slag is allowed to dry about overnight, after which it is sieved away of fine powder and is thereby controlled of grain sizes. This is controlled of moisture so as to have opitmum containing ratios, and is compacted in a mold, after which the molding is removed from the mold and is put in a dryer and is dried for about 18-48 hours at 50-80 deg.C. The expansion collapsing property by the hydration of the unslagged free CaO in the converter slag is decided from the cracking generated at this time, and whether it is usable as a road material or not is quickly determined. The result thereof is used as a criterion for shipping of the converter slag as a road material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5503681A JPS57171612A (en) | 1981-04-14 | 1981-04-14 | Quick decision method for expansion collapsing property of converter slag |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5503681A JPS57171612A (en) | 1981-04-14 | 1981-04-14 | Quick decision method for expansion collapsing property of converter slag |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57171612A true JPS57171612A (en) | 1982-10-22 |
Family
ID=12987425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5503681A Pending JPS57171612A (en) | 1981-04-14 | 1981-04-14 | Quick decision method for expansion collapsing property of converter slag |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57171612A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014157019A (en) * | 2013-02-14 | 2014-08-28 | Nippon Steel & Sumitomo Metal | Method for estimating quantity of easily expandable quicklime in steel slag |
JP2018025461A (en) * | 2016-08-10 | 2018-02-15 | Jfeスチール株式会社 | Water immersion expansion determination method of steel making slag, and manufacturing method of slag roadbed material |
JP2021012053A (en) * | 2019-07-04 | 2021-02-04 | 濱田重工株式会社 | Hydration expansion behavior evaluation method of steel making slag and steam aging device |
-
1981
- 1981-04-14 JP JP5503681A patent/JPS57171612A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014157019A (en) * | 2013-02-14 | 2014-08-28 | Nippon Steel & Sumitomo Metal | Method for estimating quantity of easily expandable quicklime in steel slag |
JP2018025461A (en) * | 2016-08-10 | 2018-02-15 | Jfeスチール株式会社 | Water immersion expansion determination method of steel making slag, and manufacturing method of slag roadbed material |
JP2021012053A (en) * | 2019-07-04 | 2021-02-04 | 濱田重工株式会社 | Hydration expansion behavior evaluation method of steel making slag and steam aging device |
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