JP5000677B2 - フッ素を含有した電気炉スラグからのフッ素溶出抑制方法 - Google Patents
フッ素を含有した電気炉スラグからのフッ素溶出抑制方法 Download PDFInfo
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- JP5000677B2 JP5000677B2 JP2009074673A JP2009074673A JP5000677B2 JP 5000677 B2 JP5000677 B2 JP 5000677B2 JP 2009074673 A JP2009074673 A JP 2009074673A JP 2009074673 A JP2009074673 A JP 2009074673A JP 5000677 B2 JP5000677 B2 JP 5000677B2
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- Prior art keywords
- slag
- fluorine
- elution
- electric furnace
- mass
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- 239000002893 slag Substances 0.000 title claims description 148
- 229910052731 fluorine Inorganic materials 0.000 title claims description 89
- 239000011737 fluorine Substances 0.000 title claims description 88
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims description 87
- 238000010828 elution Methods 0.000 title claims description 65
- 238000000034 method Methods 0.000 title claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 38
- 239000002184 metal Substances 0.000 claims description 38
- 239000002245 particle Substances 0.000 claims description 27
- 238000002156 mixing Methods 0.000 claims description 12
- 230000032683 aging Effects 0.000 claims description 6
- 239000011575 calcium Substances 0.000 description 30
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 24
- 229910052791 calcium Inorganic materials 0.000 description 24
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 21
- 239000000292 calcium oxide Substances 0.000 description 21
- 239000000463 material Substances 0.000 description 12
- 239000002689 soil Substances 0.000 description 10
- 238000007670 refining Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000005261 decarburization Methods 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- 238000009628 steelmaking Methods 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 238000006477 desulfuration reaction Methods 0.000 description 4
- 230000023556 desulfurization Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 229910052602 gypsum Inorganic materials 0.000 description 3
- 239000010440 gypsum Substances 0.000 description 3
- 229910004261 CaF 2 Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 2
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010436 fluorite Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- -1 fluorine ions Chemical class 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Description
(1)フッ素を含有した電気炉スラグと、フッ素を含有せず平均f.CaO含有量が2.5質量%以上である溶銑予備処理スラグの両方を破砕し、前記溶銑予備処理スラグの破砕後の粒径を15mm以下とし、前記電気炉スラグと該電気炉スラグの質量に対し同等以上の質量の前記溶銑予備処理スラグとを混合することを特徴とするフッ素を含有した電気炉スラグからのフッ素溶出抑制方法。
(2)前記電気炉スラグと溶銑予備処理スラグとを混合した後に蒸気エージング又は大気エージングを行うことを特徴とする上記(1)記載のフッ素を含有した電気炉スラグからのフッ素溶出抑制方法。
CaF2→Ca2++F- ;[Ca2+]×[F-]2=4.0×10-11 ・・・(1)
Claims (2)
- フッ素を含有した電気炉スラグと、フッ素を含有せず平均f.CaO含有量が2.5質量%以上である溶銑予備処理スラグの両方を破砕し、前記溶銑予備処理スラグの破砕後の粒径を15mm以下とし、前記電気炉スラグと該電気炉スラグの質量に対し同等以上の質量の前記溶銑予備処理スラグとを混合することを特徴とするフッ素を含有した電気炉スラグからのフッ素溶出抑制方法。
- 前記電気炉スラグと溶銑予備処理スラグとを混合した後に蒸気エージング又は大気エージングを行うことを特徴とする請求項1記載のフッ素を含有した電気炉スラグからのフッ素溶出抑制方法。
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JP2009074673A JP5000677B2 (ja) | 2009-03-25 | 2009-03-25 | フッ素を含有した電気炉スラグからのフッ素溶出抑制方法 |
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JP2009074673A JP5000677B2 (ja) | 2009-03-25 | 2009-03-25 | フッ素を含有した電気炉スラグからのフッ素溶出抑制方法 |
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JP2010222227A JP2010222227A (ja) | 2010-10-07 |
JP5000677B2 true JP5000677B2 (ja) | 2012-08-15 |
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Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6113957B2 (ja) * | 2012-01-13 | 2017-04-12 | 新日鉄住金エンジニアリング株式会社 | スラグ混じり土の処理方法 |
JP6188624B2 (ja) * | 2014-04-16 | 2017-08-30 | 株式会社神戸製鋼所 | フッ素及び/又は六価クロムの溶出抑制方法 |
JP6365329B2 (ja) * | 2014-05-15 | 2018-08-01 | 新日鐵住金株式会社 | 陸域用途の土木用資材の製造方法 |
JP2016044102A (ja) * | 2014-08-22 | 2016-04-04 | 株式会社神戸製鋼所 | 鉄鋼副産物からのふっ素溶出抑制方法 |
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JP3620341B2 (ja) * | 1998-11-30 | 2005-02-16 | 住友金属工業株式会社 | フッ素を含む産業廃棄物の安定化処理方法および安定化処理剤 |
JP3927035B2 (ja) * | 2002-01-17 | 2007-06-06 | 住友金属工業株式会社 | 鉄鋼スラグから溶出するフッ素の安定化処理方法および改質スラグ |
JP2003226908A (ja) * | 2002-02-01 | 2003-08-15 | Nippon Yakin Kogyo Co Ltd | 製鋼スラグ中フッ素の溶出抑制方法 |
JP2005239509A (ja) * | 2004-02-27 | 2005-09-08 | Nippon Steel & Sumikin Stainless Steel Corp | 鉄鋼スラグからのフッ素溶出抑制方法および土中埋設用材料 |
JP4818092B2 (ja) * | 2006-07-28 | 2011-11-16 | 新日本製鐵株式会社 | 製鋼スラグ中フッ素の溶出抑制方法 |
JP4682118B2 (ja) * | 2006-10-23 | 2011-05-11 | 住友金属工業株式会社 | 鉄鋼スラグから溶出するフッ素の安定化処理方法 |
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- 2009-03-25 JP JP2009074673A patent/JP5000677B2/ja not_active Expired - Fee Related
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