NO118668B - - Google Patents
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- Publication number
- NO118668B NO118668B NO164298A NO16429866A NO118668B NO 118668 B NO118668 B NO 118668B NO 164298 A NO164298 A NO 164298A NO 16429866 A NO16429866 A NO 16429866A NO 118668 B NO118668 B NO 118668B
- Authority
- NO
- Norway
- Prior art keywords
- crucible
- electrode
- furnace
- electrodes
- arc
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 230000008018 melting Effects 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims 2
- 239000000155 melt Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 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
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
- C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
- C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
- C07D251/40—Nitrogen atoms
- C07D251/54—Three nitrogen atoms
- C07D251/56—Preparation of melamine
- C07D251/60—Preparation of melamine from urea or from carbon dioxide and ammonia
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US487137A US3332947A (en) | 1965-09-14 | 1965-09-14 | Production of melamine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO118668B true NO118668B (xx) | 1970-01-26 |
Family
ID=23934557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO164298A NO118668B (xx) | 1965-09-14 | 1966-08-12 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3332947A (xx) |
| AT (1) | AT278832B (xx) |
| BE (1) | BE686478A (xx) |
| CH (1) | CH471801A (xx) |
| DE (1) | DE1645931A1 (xx) |
| ES (1) | ES331003A1 (xx) |
| GB (1) | GB1104398A (xx) |
| NL (1) | NL6612363A (xx) |
| NO (1) | NO118668B (xx) |
| SE (1) | SE326187B (xx) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO74590A (ro) * | 1977-01-19 | 1981-08-30 | Stamicarbon Bv,Nl | Procedeu de preparare a melaminei din uree |
| IT1403101B1 (it) * | 2010-12-15 | 2013-10-04 | Eurotecnica Melamine Luxemburg Zweigniederlassung In Ittigen | Uso di urea contenente formaldeide in un procedimento per la produzione di melammina mediante pirolisi dell'urea e relativo procedimento per la produzione di melammina |
| CN114835653B (zh) * | 2022-04-14 | 2024-01-19 | 德阳路仪科技有限公司 | 一种与尿素联产的闭环节能三聚氰胺的生产工艺及装置 |
| CN115181070A (zh) * | 2022-08-10 | 2022-10-14 | 宁波中科远东催化工程技术有限公司 | 一种生产三聚氰胺的方法 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3300483A (en) * | 1961-12-01 | 1967-01-24 | Merck & Co Inc | 4, 6-pregnadieno-[3, 2-c] pyrazoles and processes of preparing them |
| DE1209570B (de) * | 1964-03-28 | 1966-01-27 | Basf Ag | Verfahren zur Herstellung von Melamin |
-
1965
- 1965-09-14 US US487137A patent/US3332947A/en not_active Expired - Lifetime
-
1966
- 1966-08-11 GB GB36044/66A patent/GB1104398A/en not_active Expired
- 1966-08-12 NO NO164298A patent/NO118668B/no unknown
- 1966-09-01 NL NL6612363A patent/NL6612363A/xx unknown
- 1966-09-06 BE BE686478D patent/BE686478A/xx unknown
- 1966-09-08 ES ES0331003A patent/ES331003A1/es not_active Expired
- 1966-09-12 DE DE19661645931 patent/DE1645931A1/de active Pending
- 1966-09-13 AT AT865166A patent/AT278832B/de not_active IP Right Cessation
- 1966-09-14 SE SE12357/66A patent/SE326187B/xx unknown
- 1966-09-14 CH CH1326466A patent/CH471801A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1104398A (en) | 1968-02-28 |
| DE1645931A1 (de) | 1970-07-16 |
| NL6612363A (xx) | 1967-03-15 |
| ES331003A1 (es) | 1967-11-16 |
| AT278832B (de) | 1970-02-10 |
| SE326187B (xx) | 1970-07-20 |
| US3332947A (en) | 1967-07-25 |
| CH471801A (de) | 1969-04-30 |
| BE686478A (xx) | 1967-03-06 |
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