KR100537345B1 - 제강슬래그의 팽창을 저감시키는 방법 - Google Patents
제강슬래그의 팽창을 저감시키는 방법 Download PDFInfo
- Publication number
- KR100537345B1 KR100537345B1 KR10-2003-0097107A KR20030097107A KR100537345B1 KR 100537345 B1 KR100537345 B1 KR 100537345B1 KR 20030097107 A KR20030097107 A KR 20030097107A KR 100537345 B1 KR100537345 B1 KR 100537345B1
- Authority
- KR
- South Korea
- Prior art keywords
- steelmaking slag
- slag
- carbonic acid
- present
- acid solution
- Prior art date
Links
- 239000002893 slag Substances 0.000 title claims abstract description 67
- 238000009628 steelmaking Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 40
- 230000006641 stabilisation Effects 0.000 title 1
- 238000011105 stabilization Methods 0.000 title 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 235000011089 carbon dioxide Nutrition 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 238000000227 grinding Methods 0.000 claims abstract description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims abstract 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract description 11
- 230000000087 stabilizing effect Effects 0.000 abstract description 9
- 241001474374 Blennius Species 0.000 abstract description 2
- 230000002730 additional effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 46
- 239000000292 calcium oxide Substances 0.000 description 23
- 235000012255 calcium oxide Nutrition 0.000 description 23
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 18
- 238000006243 chemical reaction Methods 0.000 description 15
- 229910004298 SiO 2 Inorganic materials 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 239000000395 magnesium oxide Substances 0.000 description 9
- 238000011282 treatment Methods 0.000 description 9
- 230000032683 aging Effects 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 5
- 239000011575 calcium Substances 0.000 description 5
- 239000001569 carbon dioxide Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 238000000151 deposition Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000002407 reforming Methods 0.000 description 3
- 241000195493 Cryptophyta Species 0.000 description 2
- 238000011276 addition treatment Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- NKWPZUCBCARRDP-UHFFFAOYSA-L calcium bicarbonate Chemical compound [Ca+2].OC([O-])=O.OC([O-])=O NKWPZUCBCARRDP-UHFFFAOYSA-L 0.000 description 1
- 229910000020 calcium bicarbonate Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B5/00—Treatment of metallurgical slag ; Artificial stone from molten metallurgical slag
- C04B5/06—Ingredients, other than water, added to the molten slag or to the granulating medium or before remelting; Treatment with gases or gas generating compounds, e.g. to obtain porous slag
-
- 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
-
- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0087—Treatment of slags covering the steel bath, e.g. for separating slag from the molten metal
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Analytical Chemistry (AREA)
- Structural Engineering (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
구분 | 반응전탄산용액의 pH | 반응후탄산용액의 pH | 반응방법 | 팽창정도 | 비고 |
발명예1 | 3.6 | 6.5 | 침적 | ◎ | - |
발명예2 | 4.2 | 6.9 | 분사 | ◎ | - |
비교예1 | 4.4 | 6.2 | 분사 | △ | 반응이 완료되지 않음 |
종래예 | - | - | - | × | - |
-◎: 팽창이 거의 발생하지 않음-△: 팽창이 약간 발생함-×: 팽창이 많이 발생함 |
Claims (3)
- 전로에서 발생되는 제강슬래그를 40mm 이하로 분쇄하는 단계;탄산가스를 물에 용해시켜 pH 3.6~4.2의 탄산용액을 제조하는 단계; 및상기 탄산용액의 pH가 6.5~7.0이 될때까지 상기 분쇄된 제강슬래그와 반응시키는 단계;를 포함하여 이루어지는 제강슬래그의 팽창을 저감시키는 방법.
- 삭제
- 제 1항에 있어서, 상기 탄산용액을 제강슬래그에 반응시킬때, 탄산용액을 제강슬래그에 분사하여 반응시키는 것을 특징으로 하는 제강슬래그의 팽창을 저감시키는 방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2003-0097107A KR100537345B1 (ko) | 2003-12-26 | 2003-12-26 | 제강슬래그의 팽창을 저감시키는 방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2003-0097107A KR100537345B1 (ko) | 2003-12-26 | 2003-12-26 | 제강슬래그의 팽창을 저감시키는 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20050065937A KR20050065937A (ko) | 2005-06-30 |
KR100537345B1 true KR100537345B1 (ko) | 2005-12-19 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR10-2003-0097107A KR100537345B1 (ko) | 2003-12-26 | 2003-12-26 | 제강슬래그의 팽창을 저감시키는 방법 |
Country Status (1)
Country | Link |
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KR (1) | KR100537345B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100899375B1 (ko) | 2008-10-07 | 2009-05-26 | (주)한동알앤씨 | 재생 아스팔트 혼합물 및 그 제조방법 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7401415B2 (ja) * | 2020-09-08 | 2023-12-19 | 株式会社神戸製鋼所 | 製鋼スラグの膨張抑制処理方法、製鋼スラグの利用方法および低f‐CaO含有スラグの製造方法 |
KR102681283B1 (ko) * | 2023-08-30 | 2024-07-16 | 현대제철 주식회사 | 자력선별을 통한 콘크리트용 골재 제조방법 및 이에 따라 제조된 콘크리트용 골재 |
-
2003
- 2003-12-26 KR KR10-2003-0097107A patent/KR100537345B1/ko active IP Right Grant
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100899375B1 (ko) | 2008-10-07 | 2009-05-26 | (주)한동알앤씨 | 재생 아스팔트 혼합물 및 그 제조방법 |
Also Published As
Publication number | Publication date |
---|---|
KR20050065937A (ko) | 2005-06-30 |
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