NO831844L - PROCEDURE FOR COOK MANUFACTURING - Google Patents
PROCEDURE FOR COOK MANUFACTURINGInfo
- Publication number
- NO831844L NO831844L NO831844A NO831844A NO831844L NO 831844 L NO831844 L NO 831844L NO 831844 A NO831844 A NO 831844A NO 831844 A NO831844 A NO 831844A NO 831844 L NO831844 L NO 831844L
- Authority
- NO
- Norway
- Prior art keywords
- aluminum
- coke
- starting
- weight
- coking
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 15
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000000571 coke Substances 0.000 claims description 47
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 38
- 229910052782 aluminium Inorganic materials 0.000 claims description 36
- 238000004939 coking Methods 0.000 claims description 36
- 239000003245 coal Substances 0.000 claims description 32
- 239000000203 mixture Substances 0.000 claims description 25
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000011888 foil Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 8
- 229910052717 sulfur Inorganic materials 0.000 description 7
- 239000011593 sulfur Substances 0.000 description 7
- 239000004411 aluminium Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- COOGPNLGKIHLSK-UHFFFAOYSA-N aluminium sulfide Chemical compound [Al+3].[Al+3].[S-2].[S-2].[S-2] COOGPNLGKIHLSK-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 240000008573 Tropaeolum minus Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
- C10B57/06—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing additives
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Game Rules And Presentations Of Slot Machines (AREA)
- Cookers (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
Foreliggende oppfinnelse vedrører en fremgangsmåte for fremstilling av koks, spesielt koks for metallurgisk i.industri og støperier, hvor man fra ett eller flere utgangskull fremstiller en utgangs-kullbanding som ved koksovn-kammer-forkoksing fremviser en foregitt forkoksningstid, idet utgangskullblandingen tilsettes et metall i kornform, innfylles i koksovnkammerne av en koksovn, forkokses i disse og uttrykkes som kokskaker i samsvar med forkoksningstiden, The present invention relates to a method for producing coke, in particular coke for the metallurgical industry and foundries, where one or more starting coals are used to produce a starting coal banding which, in coke oven-chamber coking, exhibits a predetermined coking time, as the starting coal mixture is supplemented with a metal in grain form, is filled into the coke oven chambers of a coke oven, coked in these and expressed as coke cakes in accordance with the coke time,
og det særegne ved fremgangsmåten i henhold til oppfinnelsen er at utgangskullblandingen tilblandes aluminium i en mengde på over 0,3 vekt% og at kokskaken uttrykkes etter en forkoksningstid som er minst 10% mindre enn forkoksningstiden. and the peculiarity of the method according to the invention is that the starting coal mixture is mixed with aluminum in an amount of more than 0.3% by weight and that the coke cake is expressed after a coking time that is at least 10% less than the coking time.
Disse og andre trekk ved oppfinnelsen fremgår av patetnkravene. These and other features of the invention appear from the patent claims.
Oppfinnelsen vedrører således en fremgangsmåte for fremstilling av koks, spesielt koks for metallurgisk industri og støpe-rier, hvor det fremstilles en utgangskullblånding fra et eller flere utgangskull og som ved koksovns-kammerforkoksning fremviser en foregitt forkoksningstid, idet utgangskullblandingen tilsettes et metall i kornform, innfylles eller foretrukket innstampes i koksovnskammerne av en koksovn, forkokses i disse og uttrykkes som kokskaker i samsvar med forkoksningstiden. Med betegnelsen "kornet" menes innenfor oppfinnelsens ramme for metallet hovedsakelig midlere til fine kornstørrelser i området fra noen millimetere til omtrent 100 mikrometer. Betegnelsen "kornet" omfatter dermed også spon, trådkutt og liknende. The invention thus relates to a method for the production of coke, in particular coke for the metallurgical industry and foundries, where a starting coal blend is produced from one or more starting coals and which, in coke oven chamber coking, exhibits a predetermined coking time, as a metal in grain form is added to the starting coal mixture, filled or preferably rammed into the coke oven chambers of a coke oven, coked in these and expressed as coke cakes in accordance with the coking time. Within the scope of the invention, the term "grain" means for the metal mainly average to fine grain sizes in the range from a few millimeters to approximately 100 micrometres. The term "grain" thus also includes shavings, thread cuts and the like.
Ved den fremgangsmåte som er kjent fra DE-PS 534.721 inn-blandes som metall selve metallet eller forbindelser av elementenes periodiske system, spesielt krom, mangan eller kobber, og da i en mengde på langt under 0,5 vekt%, nemlig i området fra 0,01 til 0,02 vekt%. Disse metaller skal bare virke som katalysator og reduseres svovelinnholdet i koksen ved svovelholdige kull. En påvirkning av forkoksningstiden er ikke gitt. I koksen lar de tilsatte metaller seg knapt påvise. For å forhøye styrken og stabiliteten av koks for metallurgisk industri er det kjent og tilblande utgangskullblandingen små stykker eller fibre av stål, austenittisk stål eller kobber, og da i en mengde på 0,01 til 0,5 vekt%. For dette antar man at tilblåndingen av disse stoffer forbedrer varmeledningen i den innstampede utgangskullblanding men for påvirkning av forkoksningstiden kan imidlertid intet ut-ledes. Man forventer videre en forbedring av grafittdannelsen. Forkoksningstiden tilsvarer innenfor rammen av alle disse kjente forholdsregler forkoksningstiden av utgangs-kullbland-ingen. In the method known from DE-PS 534,721, the metal itself or compounds of the periodic table of the elements, especially chromium, manganese or copper, is mixed in as metal, and then in an amount of well below 0.5% by weight, namely in the range from 0.01 to 0.02% by weight. These metals should only act as a catalyst and reduce the sulfur content in the coke with sulfur-containing coal. An influence of the coking time is not given. In the coke, the added metals are barely detectable. In order to increase the strength and stability of coke for the metallurgical industry, it is known to add to the starting coal mixture small pieces or fibers of steel, austenitic steel or copper, and then in an amount of 0.01 to 0.5% by weight. For this reason, it is assumed that the addition of these substances improves the heat conduction in the rammed-in starting coal mixture, but nothing can be deduced about the influence of the coking time. An improvement in graphite formation is also expected. The coking time corresponds within the framework of all these known precautions to the coking time of the starting coal mixture.
I motsetning til dette er det oppgave som ligger til grunn for den foreliggende oppfinnelse å gjennomføre en fremgangsmåte slik at forkoksningen kan gjennomføres med betraktelig redusert tid, og da uten påvirkning av kvaliteten av den fremstilte koks med hensyn til stabilitet og styrke. In contrast to this, the task underlying the present invention is to carry out a method so that the coking can be carried out with considerably reduced time, and then without affecting the quality of the produced coke with regard to stability and strength.
For løsning ; av denne oppgave lærer oppfinnelsen at utgangskullblandingen tilblandes aluminium i en mengde på 0,3 vekt% og at kokskaken trykkes ut etter en forkoksningstid som er minst 10% mindre enn den ellers forventede forkoksningstid. Læren i henhold til oppfinnelsen for teknisk handling gjør således en forskjell mellom "forkoksningstid" på den ene side og "forventet forkoksningstid" på den annen side. Forkoksningstiden er således definert på to måter, nemlig ved at den forventede forkoksningstid er den som kokskaken "utgangskullblandingen" ville fremvise uten tilsetning av aluminium. Uttrykt på en annen måte er formålet for oppfinnelsen anvendelse av forholdsreglen med tilblanding av aluminium i kornform i en mengde på over 0,3 vekt% til en for fbrkoks-ning bestemt kullblanding for å redusere den forventede forkoksningstid. Forkoksningstiden kan i forhold til den forventede forkoksningstid for utgangskullblandingen reduseres med opptil 30%, noe som på den ene side avhenger av sammen-setningen av utgangskullblandingen og på den annen side av mengden av det tilblandede aluminium. Ved et foretrukket utførelsesform av oppfinnelsen tilblandes aluminium innen- For solution; from this task, the invention teaches that the starting coal mixture is mixed with aluminum in an amount of 0.3% by weight and that the coke cake is pressed out after a coking time that is at least 10% less than the otherwise expected coking time. The doctrine according to the invention for technical action thus makes a difference between "coking time" on the one hand and "expected coking time" on the other hand. The coking time is thus defined in two ways, namely that the expected coking time is that which the coke cake "initial coal mixture" would exhibit without the addition of aluminium. Expressed in another way, the purpose of the invention is the application of the rule of thumb with the addition of aluminum in granular form in an amount of more than 0.3% by weight to a coal mixture intended for coking in order to reduce the expected coking time. The coking time can be reduced by up to 30% in relation to the expected coking time for the starting coal mixture, which depends on the one hand on the composition of the starting coal mixture and on the other hand on the quantity of the added aluminium. In a preferred embodiment of the invention, aluminum is mixed within
for oppfinnelsens ramme i en mengde på 0,5 til maksimal 2,5 vekt%. Den øvre grense finnes av den fagkyndige for for the scope of the invention in an amount of 0.5 to a maximum of 2.5% by weight. The upper limit can be found by the expert
hver utgangskullblanding ved forsøk. Aluminium betegner innenfor oppfinnelsens ramme teknisk rent aluminium og innenfor området vanlige, hovedsakelig av! aluminium bestående lettmetall-legeringer, anvendt f.eks. for plater, profiler, beholdere, bokser, emballasjefolier, etc. Den ved oppfinnelsen tilsatte aluminiummengde påvirker overraskende ikke egenskapene som koksen må fremvise alt etter anvendelsesformålet. each starting coal mixture at trial. Within the scope of the invention, aluminum denotes technically pure aluminum and within the area common, mainly of! light metal alloys consisting of aluminium, used e.g. for sheets, profiles, containers, cans, packaging foils, etc. The amount of aluminum added in the invention surprisingly does not affect the properties that the coke must exhibit depending on the purpose of use.
Tilsetning av aluminium til kull som forkokses eller for-gasses er i og for seg kjent fra DE-PS 743.743. Det dreier seg imidlertid der ikke om forholdsregler ved tørrdestilla-sjon i koksovnskammeret, men om forkoksningsforholdsregler og svovelforholdsregler i nitrogenstrøm for forhøyelse av ut-byttet av gass henholdsvis gassbensin og tjære. Aluminium tilsettes som katalysator i spormengder og da for kompleter-ing til hovedsakelig tilsatte tungmetaller eller deres forbindelser . The addition of aluminum to coal that is pre-coked or pre-gassed is known per se from DE-PS 743,743. However, it is not a question of precautions for dry distillation in the coke oven chamber, but of coking precautions and sulfur precautions in nitrogen flow to increase the yield of gas, respectively gas petrol and tar. Aluminum is added as a catalyst in trace amounts and then to complement mainly added heavy metals or their compounds.
Innenfor rammen for oppfinnelsen består forskjellige mulig-heter for videre utførelsesformer og spesielt er det mulig å tilsette aluminium i form av spon av aluminiumfolie og/eller aluminiumplate. Et annet forslag består i å tilblande pulverformet aluminium og derved omhylle de enkelte korn av utgangskullblandingen med et omhyllingslag av aluminiumpulver. Arbeider man med pulverformet aluminium ligger kornstørrel-sen hensiktsmessig under 100 mikrometer. Within the framework of the invention, there are various possibilities for further embodiments and in particular it is possible to add aluminum in the form of shavings of aluminum foil and/or aluminum plate. Another proposal consists of mixing in powdered aluminum and thereby enveloping the individual grains of the starting coal mixture with an enveloping layer of aluminum powder. When working with powdered aluminium, the grain size is suitably below 100 micrometres.
Dreier det seg om fremstilling av masovnkoks lærer oppfinnelsen å tilblande det kornede aluminium om mulig i en mengde på 0,3 til 2 vekt%. Dreier det seg om fremstilling av støpe-rikoks har det vist seg gunstig med tilblanding av kornet aluminium i en mengde på over 0,5 vekt%, foretrukket omtrent 1 vekt%. Innenfor oppfinnelsens ramme kan man arbeide med en utgangskullblanding som består hovedsakelig eller utelukkende av høyflyktige kull. Ikke desto mindre erholder man en koks med høyere styrke og stabilitet. If it concerns the production of blast furnace coke, the invention teaches to mix in the granulated aluminum if possible in an amount of 0.3 to 2% by weight. If it concerns the production of foundry coke, it has proven beneficial to add granular aluminum in an amount of more than 0.5% by weight, preferably about 1% by weight. Within the framework of the invention, one can work with a starting coal mixture consisting mainly or exclusively of highly volatile coal. Nevertheless, a coke with higher strength and stability is obtained.
De oppnådde fordeler kan hovedsakelig sees deri at forkoksningstiden ved fremgangsmåten i henhold til oppfinnelsen til tidspunktet for uttrykking av kokskaken fra koksovnkammerne i forhold til den ved utgangskullblandingen forventede forkoksningstid kan reduseres betraktelig og da uten påvirkning av kvaliteten av den fremstilte koks med hensyn til abrasjon og styrke. Hertil kommer ytterligere fordeler: Ved stigenede aluminiuminnhold dehydrogeneres kullet i til-tagende grad når det bringes til forkoksningstemperaturen. Derved oppstår ved fremgangsmåten i henhold til oppfinnelsen på bekostning av metan og tunge hydrokarboner hydrogen og koks. Også når utgangskullblandingen hovedsakelig består av høytflyktige kull som uten videre ikke gir noe koks for metallurgisk industri, oppnår man innenfor oppfinnelsens ramme en koks som er brukbar innen den metallurgiske industri. Innenfor oppfinnelsens ramme kan man derfor også forarbeide tidligere ubrukbare kull til koks for metallurgisk industri. Reaksjonen mellom aluminium og svovel fører forøvrig til spesielle fordeler. Den opptrer først ved temperaturer på opptil 600°C. Dette medfører den fordel at man ved anvendelse av svovelholdige kull som tidligere kan trekke ut svovelet fra koksovnskamrene inntil temperaturen stiger over 600°C. Ved den høye hydrogenproduksjon på grunn av nærvær av aluminium understøttes endog denne utdriving av svovel. Svovelinnholdet i koksen reduseres. Den etter oppfinnelsens lære med redusert forkoksningstid fremstilte koks fremviser det tilsatte aluminium i metallisk form og dette fører til fordeler ved anvendelse av koksen. Ved høyere temperaturer i masovnen foreligger aluminiumet flytende i koksen. Det be-gynner da en reaksjon mellom aluminium og råjernet og dette fører til en avbinding til aluminiumsulfid. Aluminiumsulfidet vandrer inn i slagget og avlaster avsvovlingsanlegget etter masovnstappingen. The advantages achieved can mainly be seen in that the coking time of the method according to the invention to the time of expression of the coke cake from the coke oven chambers in relation to the expected coking time of the starting coal mixture can be reduced considerably and then without affecting the quality of the produced coke in terms of abrasion and strength . There are further advantages to this: With increased aluminum content, the coal is dehydrogenated to an increasing degree when it is brought to the coking temperature. The method according to the invention thereby produces hydrogen and coke at the expense of methane and heavy hydrocarbons. Even when the starting coal mixture mainly consists of highly volatile coals which naturally do not provide any coke for the metallurgical industry, within the framework of the invention a coke is obtained which is usable within the metallurgical industry. Within the scope of the invention, previously unusable coal can therefore also be processed into coke for the metallurgical industry. The reaction between aluminum and sulfur also leads to special advantages. It first appears at temperatures of up to 600°C. This entails the advantage that when using sulfur-containing coal, the sulfur can be extracted earlier from the coke oven chambers until the temperature rises above 600°C. The high hydrogen production due to the presence of aluminum even supports this expulsion of sulphur. The sulfur content in the coke is reduced. The coke produced according to the teachings of the invention with a reduced coking time exhibits the added aluminum in metallic form and this leads to advantages when using the coke. At higher temperatures in the blast furnace, the aluminum is liquid in the coke. A reaction then begins between the aluminum and the pig iron and this leads to a bond to aluminum sulphide. The aluminum sulphide migrates into the slag and relieves the desulphurisation plant after the blast furnace filling.
Oppfinnelsen forklares nærmere ved hjelp av en vedføyd graf-isk fremstilling. Den grafiske fremstilling viser kurver for tre forskjellige utgangskullblandinger I, II og III. Ved abscissen er aluminiuminnholdet angitt i vektprosent tilsatt utgangskullblandingen. Ved ordinaten er den forventede forkoksningstid angitt betegnet med t^. Forøvrig er forkoks- ningstidene minus 5%, t. minus 10% og minus 15% angitt. Kurvene muliggjør utlesning med hvilke tilblandinger av de angitte aluminiummengder man kan arbeide ved for reduserte forkoksningstider i forhold til forventede forkoksningstiderv The invention is explained in more detail with the help of an attached graphic representation. The graphic representation shows curves for three different starting coal mixtures I, II and III. On the abscissa, the aluminum content is indicated as a percentage by weight added to the starting coal mixture. On the ordinate, the expected coking time is indicated, denoted by t^. Otherwise, the coking times minus 5%, t. minus 10% and minus 15% are specified. The curves make it possible to read with which admixtures of the indicated quantities of aluminum one can work with for reduced coking times in relation to expected coking times
Claims (8)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3219886 | 1982-05-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
NO831844L true NO831844L (en) | 1983-11-28 |
Family
ID=6164590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO831844A NO831844L (en) | 1982-05-27 | 1983-05-25 | PROCEDURE FOR COOK MANUFACTURING |
Country Status (16)
Country | Link |
---|---|
JP (1) | JPS5925884A (en) |
AR (1) | AR231455A1 (en) |
AU (1) | AU1500283A (en) |
BE (1) | BE896840A (en) |
DD (1) | DD210294A5 (en) |
ES (1) | ES522742A0 (en) |
FR (1) | FR2527628A1 (en) |
GB (1) | GB2121429A (en) |
IT (2) | IT8321307A1 (en) |
NL (1) | NL8301903A (en) |
NO (1) | NO831844L (en) |
PL (1) | PL242229A1 (en) |
PT (1) | PT76762B (en) |
SE (1) | SE8302948L (en) |
SU (1) | SU1151215A3 (en) |
ZA (1) | ZA833697B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EA022518B1 (en) * | 2012-10-22 | 2016-01-29 | Открытое Акционерное Общество "Губахинский Кокс" | Method of coke producing for non-ferrous metals smelting |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR574760A (en) * | 1922-12-20 | 1924-07-18 | Naamlooze Vennootschap Handels | Process for the carbonization and gasification of peat, lignite, sapropel and similar bituminous fuels |
DE743743C (en) * | 1939-01-27 | 1944-01-11 | Dr Wilhelm Steinmetz | Process for smoldering and coking all kinds of fuels in a nitrogen stream |
FR880576A (en) * | 1942-03-27 | 1943-03-30 | Product to improve the combustion of poor quality fuels | |
JPS491921B1 (en) * | 1970-05-11 | 1974-01-17 | ||
JPS5549115A (en) * | 1978-10-05 | 1980-04-09 | Nippon Light Metal Co Ltd | Pressure type leaf filter |
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1983
- 1983-05-12 GB GB08313135A patent/GB2121429A/en not_active Withdrawn
- 1983-05-17 AR AR293049A patent/AR231455A1/en active
- 1983-05-23 ZA ZA833697A patent/ZA833697B/en unknown
- 1983-05-25 FR FR8308611A patent/FR2527628A1/en active Pending
- 1983-05-25 NO NO831844A patent/NO831844L/en unknown
- 1983-05-25 JP JP58090842A patent/JPS5925884A/en active Pending
- 1983-05-26 ES ES522742A patent/ES522742A0/en active Granted
- 1983-05-26 IT IT1983A21307A patent/IT8321307A1/en unknown
- 1983-05-26 AU AU15002/83A patent/AU1500283A/en not_active Abandoned
- 1983-05-26 IT IT8321307Q patent/IT1163394B/en active
- 1983-05-26 PT PT76762A patent/PT76762B/en unknown
- 1983-05-26 DD DD83251286A patent/DD210294A5/en unknown
- 1983-05-26 SU SU833595640A patent/SU1151215A3/en active
- 1983-05-26 BE BE2/60102A patent/BE896840A/en not_active IP Right Cessation
- 1983-05-26 SE SE8302948A patent/SE8302948L/en not_active Application Discontinuation
- 1983-05-27 PL PL24222983A patent/PL242229A1/en unknown
- 1983-05-27 NL NL8301903A patent/NL8301903A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
NL8301903A (en) | 1983-12-16 |
SE8302948D0 (en) | 1983-05-26 |
DD210294A5 (en) | 1984-06-06 |
ES8402865A1 (en) | 1984-03-01 |
GB2121429A (en) | 1983-12-21 |
SU1151215A3 (en) | 1985-04-15 |
AR231455A1 (en) | 1984-11-30 |
IT8321307A0 (en) | 1983-05-26 |
PL242229A1 (en) | 1984-07-02 |
PT76762B (en) | 1986-01-14 |
FR2527628A1 (en) | 1983-12-02 |
JPS5925884A (en) | 1984-02-09 |
SE8302948L (en) | 1983-11-28 |
BE896840A (en) | 1983-09-16 |
IT1163394B (en) | 1987-04-08 |
GB8313135D0 (en) | 1983-06-15 |
AU1500283A (en) | 1983-12-01 |
ZA833697B (en) | 1984-07-25 |
PT76762A (en) | 1983-06-01 |
ES522742A0 (en) | 1984-03-01 |
IT8321307A1 (en) | 1984-11-26 |
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