DE1471529A1 - Process for making steelworks slag usable as road building material - Google Patents
Process for making steelworks slag usable as road building materialInfo
- Publication number
- DE1471529A1 DE1471529A1 DE19631471529 DE1471529A DE1471529A1 DE 1471529 A1 DE1471529 A1 DE 1471529A1 DE 19631471529 DE19631471529 DE 19631471529 DE 1471529 A DE1471529 A DE 1471529A DE 1471529 A1 DE1471529 A1 DE 1471529A1
- Authority
- DE
- Germany
- Prior art keywords
- slag
- building material
- stahl
- page
- road building
- 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
- 239000002893 slag Substances 0.000 title claims description 14
- 238000000034 method Methods 0.000 title claims description 7
- 239000004566 building material Substances 0.000 title claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 2
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000004571 lime Substances 0.000 claims description 2
- 238000010079 rubber tapping Methods 0.000 claims description 2
- 238000007885 magnetic separation Methods 0.000 claims 2
- 238000000354 decomposition reaction Methods 0.000 claims 1
- 238000004090 dissolution Methods 0.000 claims 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims 1
- 235000013980 iron oxide Nutrition 0.000 claims 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000378 calcium silicate Substances 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 2
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000424725 Heide Species 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010310 metallurgical process Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- -1 t (2Ca ( Chemical compound 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Description
Verfahren zur Verwertbarmachung von Stahlwerksschlacken als Straßenbaustoff Schlacken, die bei metallurgischen Prozessen anfallen, werden seit langer Zeit als Straßenbaustoffe verwendet, wenn sie in einer Form gewonnen werden können, die dein späteren Verwendungszweck angepaßt ist und wenn sie ausreichende mechanische Eigenschaften aufweisen. Die Vorschriften über die Beschaffenheit sind in der DM 4301 und dem Merkblatt über ilochofenschl«eke für Straßenuntergrund, Unterbau und Frostschutz, Fassung Januar 196121, herausgegeben von der Forschungsgesellschaft für das Straßenwesen e. V., festgelegt und gelten für ilochofenschlacken sowie für vier Hochofenschlacke verwandte Schlacken (Kupferschlacken, 3leischachtofenschiachen).1) Stahlwerksschlacken, d. h. Schlacken, die bei den Verfahren zur Umwandlung von itolleisen und,Juder- tD-clirotc zu itahl anfallen, sind bisher als Straßenbausto.f nicht verwendet worden, wenn ina,von relativ unbedeutenden i@tengen übsieht, ciie als Füllstoff bei Bauten geringer Belastung eingesetzt wurden. -degen der hohen PG05-Gellalte kön.,en ticillacken aus Verfahren, die hochyhosl,hor li«ltiges lolleisen verarbeiten, als 1)iin@c:luittül varivert;:t weruer.. wie üchl,ac.cerl der ;tctiii-:::oi.eisen vezas.t@ei icncxexi Prozesse (SH-Verfahren, oo2urdezi wei,ari iürur ho:,Len ieiiseiioh-dulgeiialte (bis 2@i ü) ctz:ii @ink#;btztoffen ctes tiocLiofens zur #zeuinnuaf, von .:oheisen beige:beneii. :wie in den letzten fafren verstLtrrtte:n .3euüiaui.@;er@ zur iZationaliserur@g ües @lucho:fen-derfecilrns sind u. a. üaüüa,ch mar,#.eiinzeiciinet, daß Linsatzstoffu i:iit geringeren Gehalten an Lisen so weit wie möglich ausgeschlossen werden. Stahlwerksschlacken können daher heute bei einer Wirtschaftlichen Erzeugung von Aoheisen nur in ganz geringen %iengen repetiert L) werden. Es ist daher das Jemühen, die Stahlwer:asc.iliEicl::en als btraL.enbaustoff zu verwenden. 1::i Zustand ihres Lntfalls nach dein Abstich im Stahlwerk geniiüen aber die ;schlacken nicht den an einen Straßenbaustoii zu stellenden Anforderungen guter Aatuabeständigkeit. Dei der Lagerung weisen sie Zerfallerscheinungen auf, die ihre Ursache in den holien@:I@ieaalten (aalhzerfall) und den hohen LisenoxydulgehGlten (Liseuzerfall) haben. Heide 2,erfallsarteii sind an Hochofenscrilac.:i#en eingehend untersucht worden. °) Bei- hohen Kalkgehalten bildet siel: bei der Erstarrung aus dein Scliriiilzfluß das 3ikalziumsilika,t (2Ca(, SiC;..), äEts während vier Abkühlung unter Volumenänderung tiäa;.xistallisiert und dtadurch zu einer Zerstörung des Kristallverbandes führt (@errieseln). Process for the utilization of steelworks slag as road building material Slag resulting from metallurgical processes has been used as road building material for a long time if it can be obtained in a form that is adapted to its later use and if it has sufficient mechanical properties. The regulations on the condition are in DM 4301 and the leaflet on oven bays for road subsoil, substructure and frost protection, version January 196121, published by the Forschungsgesellschaft für das Straßenwesen e. V., and apply to furnace slag as well as slag related to four blast furnace slag (copper slag, 3leischachtofenschiachen) .f has not been used if, apart from relatively insignificant i @ tengen, ciie were used as fillers in buildings with low loads. - on the other hand, the high PG05 gel age can. ::: oi.eisen vezas.t@ei icncxexi processes (SH process, oo2urdezi wei, ari iürur ho:, Len ieiiseiioh-dulgeiialte (up to 2 @ i ü) ctz: ii @ ink #; btztoffen ctes tiocLiofens zur #zeuinnuaf , from.: oheisen beige: beneii.: as in the last fafren: n .3euüiaui. @; er @ zur iZationaliserur @ gües @lucho: fen-derfecilrns are among others üaüüa, ch mar, #. eiinzeiciinet that linsatzstoffu i : i can be excluded as far as possible with lower contents of pilaster strips. Therefore, steel mill slag can only be repeated in very small percentages today with an economical production of Aoheisen L). It is therefore an effort to use the Stahlwer: asc.iliEicl :: en as building materials. 1 :: i the state of their failure after tapping in the steelworks, however, the slag does not meet the requirements of a road construction tool with good aatua resistance. During storage, they show signs of disintegration, which are caused by the holien @: I @ ieaalten (eelhzerfall) and the high LisenoxydulgeGlten (Liseu disintegration). Heide 2, erfallsarteii have been examined in detail at Hochofenscrilac.:i#en. °) At high lime contents it forms: during the solidification of the calcium silicate flow, the calcium silica, t (2Ca (, SiC; ..), Ets during four cooling times with a change in volume tiäa; .xistallisiert and thus leads to a destruction of the crystal structure (@errieseln ).
Line Möglichkeit, äerii i,alkzi2rfell zu begeUnen, besteht darin, Kalkgehalte, die zu einer -iilcÄunL des iiikalziumsilikates führen, zu vermeiden.One possibility to desire aeerii i, alkzi2rfell is to Avoid limescale content that could cause the calcium silicate to become acidic.
Eisenzerfall :,;-:nn bei ll'eG-:.iehalten von über 3 5ö stattfinden aufgrund der Bildttn(; von ,:üschkristallen aus Lisen- und L"rangansulfid, die bei 3erührung mit ;'lassen Sulfidschwafel abspalten unter --iildung von hydroxyden. i)erti .Liaenzerf«il ist durch ll'e0-Gehalte unter 3 ;ö zu begegnen.Iron decay:,; -: nn at ll'eG -:. Hold over 3 5ö take place due to the Bildttn (; of,: üschkristallen from Lisen- and L "rangansulfid, the 3 contact with; 'cause sulphide sludge to split off with the formation of hydroxides. i) erti. Liaenzerf «il is to be countered by 11'e0 contents below 3; ö.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEW0033882 | 1963-02-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1471529A1 true DE1471529A1 (en) | 1969-04-17 |
Family
ID=7600449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19631471529 Pending DE1471529A1 (en) | 1963-02-12 | 1963-02-12 | Process for making steelworks slag usable as road building material |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1471529A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT82U1 (en) * | 1993-07-01 | 1995-01-25 | Holderbank Financ Glarus | METHOD FOR THE PRODUCTION OF ACTIVE BINDING AGENTS FOR CEMENT FROM STEEL SLAGS |
| US5405429A (en) * | 1992-05-12 | 1995-04-11 | Holderbank Financiere Glarus, Ag | Method for treatment and conversion of refuse incineration residues into environmentally acceptable and reusable material, especially for construction purposes |
-
1963
- 1963-02-12 DE DE19631471529 patent/DE1471529A1/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5405429A (en) * | 1992-05-12 | 1995-04-11 | Holderbank Financiere Glarus, Ag | Method for treatment and conversion of refuse incineration residues into environmentally acceptable and reusable material, especially for construction purposes |
| AT82U1 (en) * | 1993-07-01 | 1995-01-25 | Holderbank Financ Glarus | METHOD FOR THE PRODUCTION OF ACTIVE BINDING AGENTS FOR CEMENT FROM STEEL SLAGS |
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