ATE43647T1 - Verfahren und vorrichtung zur entfernung von alkalinitrit aus nitrathaltigen salzbaedern. - Google Patents
Verfahren und vorrichtung zur entfernung von alkalinitrit aus nitrathaltigen salzbaedern.Info
- Publication number
- ATE43647T1 ATE43647T1 AT86110169T AT86110169T ATE43647T1 AT E43647 T1 ATE43647 T1 AT E43647T1 AT 86110169 T AT86110169 T AT 86110169T AT 86110169 T AT86110169 T AT 86110169T AT E43647 T1 ATE43647 T1 AT E43647T1
- Authority
- AT
- Austria
- Prior art keywords
- alkalinitrite
- nitrate containing
- containing salt
- salt baths
- nitrate
- Prior art date
Links
- 229910002651 NO3 Inorganic materials 0.000 title abstract 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 title abstract 3
- 150000003839 salts Chemical class 0.000 title abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 2
- 150000002826 nitrites Chemical class 0.000 abstract 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/607—Molten salts
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/44—Methods of heating in heat-treatment baths
- C21D1/46—Salt baths
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/40—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3533935A DE3533935C1 (de) | 1985-09-24 | 1985-09-24 | Verfahren und Vorrichtung zur Entfernung von Alkalinitrit aus nitrathaltigen Salzbaedern |
EP86110169A EP0216067B1 (de) | 1985-09-24 | 1986-07-24 | Verfahren und Vorrichtung zur Entfernung von Alkalinitrit aus nitrathaltigen Salzbädern |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE43647T1 true ATE43647T1 (de) | 1989-06-15 |
Family
ID=6281734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT86110169T ATE43647T1 (de) | 1985-09-24 | 1986-07-24 | Verfahren und vorrichtung zur entfernung von alkalinitrit aus nitrathaltigen salzbaedern. |
Country Status (5)
Country | Link |
---|---|
US (1) | US4717429A (de) |
EP (1) | EP0216067B1 (de) |
JP (1) | JPH076055B2 (de) |
AT (1) | ATE43647T1 (de) |
DE (2) | DE3533935C1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6117249A (en) * | 1998-02-13 | 2000-09-12 | Kerk Motion Products, Inc. | Treating metallic machine parts |
US6746546B2 (en) | 2001-11-02 | 2004-06-08 | Kolene Corporation | Low temperature nitriding salt and method of use |
SE530783C2 (sv) * | 2007-01-16 | 2008-09-09 | Westinghouse Electric Sweden | Spridargaller för positinering av bränslestavar |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3793208A (en) * | 1973-01-04 | 1974-02-19 | Park Chem Co | Method of rectifying commercial salt baths |
DE2340405C3 (de) * | 1973-08-09 | 1978-05-03 | Ekkehard 7050 Waiblingen Mohr | Verfahren zum Aufbereiten von Spiil- und Abwässern aus Salzbadhärtereien |
US4149702A (en) * | 1976-03-25 | 1979-04-17 | Park Chemical Company | Method and apparatus for recycling heat treating salts |
DE2930442A1 (de) * | 1978-07-29 | 1980-02-07 | Furukawa Electric Co Ltd | Abwasserbehandlungsverfahren |
DE2852475C2 (de) * | 1978-12-05 | 1980-05-22 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt | Verfahren zur automatisch steuerbaren Entgiftung von Nitritionen enthaltenden Abwässern |
JPS5929317B2 (ja) * | 1979-05-16 | 1984-07-19 | 大阪瓦斯株式会社 | 廃水処理方法 |
US4396439A (en) * | 1981-08-21 | 1983-08-02 | Park Chemical Company | Recovery and recycle of nitrate and nitrite salts from chloride containing quench bath solids |
US4568352A (en) * | 1984-05-24 | 1986-02-04 | Olin Corporation | Alkali metal nitrate purification |
-
1985
- 1985-09-24 DE DE3533935A patent/DE3533935C1/de not_active Expired
-
1986
- 1986-07-24 AT AT86110169T patent/ATE43647T1/de not_active IP Right Cessation
- 1986-07-24 DE DE8686110169T patent/DE3663688D1/de not_active Expired
- 1986-07-24 EP EP86110169A patent/EP0216067B1/de not_active Expired
- 1986-08-05 US US06/893,513 patent/US4717429A/en not_active Expired - Lifetime
- 1986-09-24 JP JP61223963A patent/JPH076055B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0216067A1 (de) | 1987-04-01 |
US4717429A (en) | 1988-01-05 |
DE3533935C1 (de) | 1986-06-05 |
JPH076055B2 (ja) | 1995-01-25 |
DE3663688D1 (en) | 1989-07-06 |
JPS6286152A (ja) | 1987-04-20 |
EP0216067B1 (de) | 1989-05-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEIH | Change in the person of patent owner | ||
REN | Ceased due to non-payment of the annual fee |