JP2008214149A - 粉状製鋼スラグの安定化処理方法および安定化製鋼スラグ - Google Patents
粉状製鋼スラグの安定化処理方法および安定化製鋼スラグ Download PDFInfo
- Publication number
- JP2008214149A JP2008214149A JP2007055804A JP2007055804A JP2008214149A JP 2008214149 A JP2008214149 A JP 2008214149A JP 2007055804 A JP2007055804 A JP 2007055804A JP 2007055804 A JP2007055804 A JP 2007055804A JP 2008214149 A JP2008214149 A JP 2008214149A
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- Prior art keywords
- slag
- mass
- carbon dioxide
- less
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- 239000002893 slag Substances 0.000 title claims abstract description 237
- 238000000034 method Methods 0.000 title claims abstract description 64
- 238000009628 steelmaking Methods 0.000 title claims abstract description 43
- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 164
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 82
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 82
- 239000002245 particle Substances 0.000 claims abstract description 68
- 229910000831 Steel Inorganic materials 0.000 claims description 30
- 239000010959 steel Substances 0.000 claims description 30
- 230000006641 stabilisation Effects 0.000 claims description 10
- 238000011105 stabilization Methods 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims 1
- 238000003672 processing method Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 28
- 239000000463 material Substances 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 60
- 238000006243 chemical reaction Methods 0.000 description 30
- 238000002474 experimental method Methods 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 230000032683 aging Effects 0.000 description 13
- 238000012545 processing Methods 0.000 description 11
- 238000006703 hydration reaction Methods 0.000 description 10
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000004576 sand Substances 0.000 description 6
- 238000001723 curing Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 238000007873 sieving Methods 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004453 electron probe microanalysis Methods 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009423 ventilation Methods 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
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00215—Mortar or concrete mixtures defined by their oxide composition
Abstract
【解決手段】本発明によれば、T−Feを2.0質量%以上、かつMgOを4.0質量%以上含み、粒径分布として粒径1mm以下が30質量%以上である粉状製鋼スラグについて、該スラグの含有水分量を8質量%以上20質量%以下に調整し、炭酸ガスの純分量としてスラグ1トン当たりに100Nm3/hr以下の炭酸ガス含有ガスを供給し、該炭酸ガス含有ガスの供給量をスラグ1トン当たり100Nm3/hr以下とする粉状製鋼スラグの安定化処理方法が提供される。従って、本方法により得られたスラグは、体積膨張率が1.5容量%以下を達成し、粉状スラグの自然砂あるいは砕砂等の土木用資材の代替使用が可能となる。
【選択図】図3
Description
さらに、炭酸ガスの純分量としてスラグ1トン当たりに5Nm3/hr以上の炭酸ガス含有ガスを供給することを特徴としている。
粒径1mm以下のスラグの含有率に応じて、スラグ1トン当たりに供給する炭酸ガスの純分量を調整することを特徴としている。
Claims (4)
- T−Feを2.0質量%以上、かつMgOを4.0質量%以上含み、粒径分布として粒径1mm以下が30質量%以上である粉状製鋼スラグについて、該スラグの含有水分量を8質量%以上20質量%以下に調整し、炭酸ガスの純分量としてスラグ1トン当たりに100Nm3/hr以下の炭酸ガス含有ガスを供給する粉状製鋼スラグの安定化処理方法であって、該炭酸ガス含有ガスの供給量をスラグ1トン当たり100Nm3/hr以下とすることを特徴とする、粉状製鋼スラグの安定化処理方法。
- さらに、炭酸ガスの純分量としてスラグ1トン当たりに5Nm3/hr以上の炭酸ガス含有ガスを供給することを特徴とする、請求項1に記載の粉状製鋼スラグの安定化処理方法。
- 粒径1mm以下のスラグの含有率に応じて、スラグ1トン当たりに供給する炭酸ガスの純分量を調整することを特徴とする、請求項1または2に記載の粉状製鋼スラグの安定化処理方法。
- T−Feを2.0質量%以上、かつMgOを4.0質量%以上含み、粒径分布として粒径1mm以下が30質量%以上であり、体積膨張率が1.5容量%以下であることを特徴とする、安定化製鋼スラグ。
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JP2007055804A JP4808655B2 (ja) | 2007-03-06 | 2007-03-06 | 粉状製鋼スラグの安定化処理方法 |
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JP2007055804A JP4808655B2 (ja) | 2007-03-06 | 2007-03-06 | 粉状製鋼スラグの安定化処理方法 |
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JP4808655B2 JP4808655B2 (ja) | 2011-11-02 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009196865A (ja) * | 2008-02-22 | 2009-09-03 | Nippon Steel Corp | 製鋼スラグの安定化処理方法 |
JP2010189940A (ja) * | 2009-02-18 | 2010-09-02 | Jfe Steel Corp | 路盤材適性を有しない材料の選定方法 |
JP2010189942A (ja) * | 2009-02-19 | 2010-09-02 | Jfe Steel Corp | 路盤材 |
JP2022143905A (ja) * | 2021-03-18 | 2022-10-03 | Jfeスチール株式会社 | スラグ路盤材の製造方法およびスラグ路盤材 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000143304A (ja) * | 1998-11-08 | 2000-05-23 | Nkk Corp | スラグを主原料とする人工石材およびその製造方法 |
JP2005097076A (ja) * | 2003-06-09 | 2005-04-14 | Nippon Steel Corp | 製鋼スラグの安定化処理方法および安定化製鋼スラグ |
JP2005200234A (ja) * | 2004-01-13 | 2005-07-28 | Nippon Steel Corp | 製鋼スラグの処理方法 |
JP2007022817A (ja) * | 2005-07-12 | 2007-02-01 | Nippon Steel Corp | 製鋼スラグの処理方法 |
JP2007031220A (ja) * | 2005-07-28 | 2007-02-08 | Nippon Steel Corp | スラグの造粒方法および造粒スラグ |
JP2008214150A (ja) * | 2007-03-06 | 2008-09-18 | Nippon Steel & Sumikin Stainless Steel Corp | 粉状製鋼スラグの安定化処理方法および安定化製鋼スラグ |
-
2007
- 2007-03-06 JP JP2007055804A patent/JP4808655B2/ja active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000143304A (ja) * | 1998-11-08 | 2000-05-23 | Nkk Corp | スラグを主原料とする人工石材およびその製造方法 |
JP2005097076A (ja) * | 2003-06-09 | 2005-04-14 | Nippon Steel Corp | 製鋼スラグの安定化処理方法および安定化製鋼スラグ |
JP2005200234A (ja) * | 2004-01-13 | 2005-07-28 | Nippon Steel Corp | 製鋼スラグの処理方法 |
JP2007022817A (ja) * | 2005-07-12 | 2007-02-01 | Nippon Steel Corp | 製鋼スラグの処理方法 |
JP2007031220A (ja) * | 2005-07-28 | 2007-02-08 | Nippon Steel Corp | スラグの造粒方法および造粒スラグ |
JP2008214150A (ja) * | 2007-03-06 | 2008-09-18 | Nippon Steel & Sumikin Stainless Steel Corp | 粉状製鋼スラグの安定化処理方法および安定化製鋼スラグ |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009196865A (ja) * | 2008-02-22 | 2009-09-03 | Nippon Steel Corp | 製鋼スラグの安定化処理方法 |
JP2010189940A (ja) * | 2009-02-18 | 2010-09-02 | Jfe Steel Corp | 路盤材適性を有しない材料の選定方法 |
JP2010189942A (ja) * | 2009-02-19 | 2010-09-02 | Jfe Steel Corp | 路盤材 |
JP2022143905A (ja) * | 2021-03-18 | 2022-10-03 | Jfeスチール株式会社 | スラグ路盤材の製造方法およびスラグ路盤材 |
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