HRP970335A2 - Process and device for returning scrap into cupola furnance - Google Patents
Process and device for returning scrap into cupola furnanceInfo
- Publication number
- HRP970335A2 HRP970335A2 HRP-9600236A HRP970335A HRP970335A2 HR P970335 A2 HRP970335 A2 HR P970335A2 HR P970335 A HRP970335 A HR P970335A HR P970335 A2 HRP970335 A2 HR P970335A2
- Authority
- HR
- Croatia
- Prior art keywords
- waste
- furnace
- rotating part
- feeder
- raw material
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 15
- 239000002699 waste material Substances 0.000 claims description 53
- 239000002994 raw material Substances 0.000 claims description 26
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000003238 silicate melt Substances 0.000 claims description 10
- 239000011490 mineral wool Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 2
- 239000003546 flue gas Substances 0.000 description 13
- 239000000571 coke Substances 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B3/00—Charging the melting furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/001—Injecting additional fuel or reducing agents
- C21B5/003—Injection of pulverulent coal
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/02—Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
- C21B5/023—Injection of the additives into the melting part
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Furnace Charging Or Discharging (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Processing Of Solid Wastes (AREA)
Description
Predmet izuma je postupak za vraćanje otpada u kupolnu peć za pripremu silikatne taline za izradu mineralne vune, te naprava za vraćanje otpada u kupolnu peć za pripremu silikatne taline za izradu mineralne vune. The subject of the invention is a process for returning waste to the dome furnace for the preparation of silicate melt for the production of mineral wool, and a device for returning waste to the dome furnace for the preparation of silicate melt for the production of mineral wool.
Izum raspravlja o vraćanju otpada, odnosno škarta koji nastaje kod proizvodnje mineralne vune, natrag u proces. Silikatna talina koja se proizvodi u kupolnim pećima iz komadnih sirovina uobičajene granulacije od 30-200 mm najčešće se upotrebljava za proizvodnju mineralne vune. U tom procesu nastaje otpad kojeg kod razvlaknjavanja silikatne taline, ovisno o postupku razvlaknjavanja, ima do 30% težine silikatne taline. Isto tako dolazi do otpada tijekom daljnje prerade mineralne vune tj. na cijeloj proizvodnoj liniji. Otpad je obično u vlaknatom ili perlatom obliku. Ovaj otpad predstavlja ekološko i ekonomsko opterećenje. The invention discusses the return of waste, i.e. the waste produced during the production of mineral wool, back into the process. Silicate melt, which is produced in cupola furnaces from lump raw materials with the usual granulation of 30-200 mm, is most often used for the production of mineral wool. In this process, waste is created, which, depending on the fiberization process, has up to 30% of the weight of the silicate melt. Waste also occurs during further processing of mineral wool, i.e. on the entire production line. The waste is usually in fibrous or beaded form. This waste represents an environmental and economic burden.
Silikatna talina izrađuje se u kupolnim pećima. Kupolna peć za proizvodnju silikatne taline je posebna izvedba okomitog rova koji je sastavljen iz vertikalno stojeće, najčešće dvostjene, vodno hlađene željezne cijevi koja je na dnu zatvorena demontažnim poklopcem obzidanim vatrootpornim materijalom. Doziranje sirovine i energenata teče pomoću dozirne naprave s gornjeg kraja. Energent koji daje energiju za taljenje je obično koks. Za izgaranje koksa je u donjem dijelu kupolne peći preko niza puhača dovedena potrebna količina kisika, odnosno zraka. Kod sagorijevanja koksa u kupolnoj peći oslobađa se toplina koja se odražava u reakcijskim temperaturama iznad 1500 C, tako da dolazi do taljenja sirovina. Talina se zbog gravitacije skuplja u donjem dijelu peći, te preko sporednog otvora otiče do stroja za razvlaknjavanje. Dimni plinovi, koji nastaju kod izgaranja koksa, otiču po međuprostoru između komada koksa i sirovine prema gornjem dijelu peći gdje je smješten dimnjak, odnosno cjevovod za odsisavanje. Na taj način dimni plinovi griju iznad taline ležeće komade sirovine. Sirovine za proizvodnju silikatne taline su najčešće dijabaz, bazalt, amfibolit i ostale slične mineralne alumosilikatne magmatske kamenine ili pak različite vrste metalurških šljaka. Silicate melt is made in cupola furnaces. The dome furnace for the production of silicate melt is a special version of a vertical trench, which is composed of a vertically standing, usually double-walled, water-cooled iron pipe, which is closed at the bottom with a removable cover walled with fire-resistant material. Dosing of raw materials and energy sources takes place using a dosing device from the upper end. The energy source that provides energy for melting is usually coke. For the combustion of coke, the required amount of oxygen, or air, is supplied in the lower part of the dome furnace via a series of blowers. When coke is burned in a cupola furnace, heat is released, which is reflected in reaction temperatures above 1500 C, so that the raw materials melt. Due to gravity, the melt collects in the lower part of the furnace, and flows through the side opening to the fiberizing machine. The flue gases, which are produced during the combustion of coke, flow through the space between the pieces of coke and the raw material towards the upper part of the furnace where the chimney is located, i.e. the exhaust pipe. In this way, the flue gases heat the piece of raw material lying above the melt. Raw materials for the production of silicate melt are most often diabase, basalt, amphibolite and other similar mineral aluminosilicate magmatic rocks or different types of metallurgical slag.
Za proizvodnju taline u kupolnim pećima je po poznatom stanju moguće upotrebljavati samo sirovine i energente u obliku komada. Drugačiji pristup za kupolne peći do sada još nije bio upotrijebljen, jer je po dosadašnjem stanju tehnike vrijedilo, da je za kupolne peći upotrebljiv samo materijal u komadima, odnosno jedra veća od 30 mm, što jedino omogućava protok dimnih plinova po ulošku sirovine i energenata od mjesta nastanka dimnih plinova do izlaza iz peći. Problem je u tome da je otpad obično, odnosno pretežno u vlaknastom ili perlastom obliku, tj. nekomadnom, te bi njegovo nekontrolirano dodavanje sirovini ili energentu spriječilo protok dimnih plinova. For the production of melt in dome furnaces, according to the known conditions, it is possible to use only raw materials and energy sources in the form of pieces. A different approach for dome furnaces has not yet been used, because according to the current state of the art, only material in pieces, i.e. sails larger than 30 mm, can be used for dome furnaces, which only enables the flow of flue gases through the cartridge of raw materials and energy from places where flue gases are generated to the exit from the furnace. The problem is that the waste is usually, or predominantly, in a fibrous or pearly form, i.e. non-flaky, and its uncontrolled addition to the raw material or energy source would prevent the flow of flue gases.
Iz ekoloških i ekonomskih razloga već su razvijeni postupci vraćanja otpada u peć. For ecological and economic reasons, procedures for returning waste to the furnace have already been developed.
Najuobičajeni je postupak briketiranja, pri čemu se otpad smelje do željene granulacije i, s dodatkom cementa u kalupima, stisne u brikete, koji prilikom stvrdnjavanja cementa otpadu daju potreban oblik komada, veličinu i čvrstoću. The most common is the briquetting procedure, where the waste is ground to the desired granulation and, with the addition of cement in molds, pressed into briquettes, which, when the cement hardens, give the waste the required piece shape, size and strength.
Poznato je upuhavanje mljevenog otpada zajedno sa zrakom za izgaranje kroz puhače. U tom slučaju potrebno je mljevenje otpada, a sporno je ekološko rješenje, jer je u izlaznim dimnim plinovima zapažena količina upuhanog i netopljenog praha otpada. It is known to blow ground waste together with air for combustion through blowers. In this case, grinding of the waste is necessary, and the ecological solution is controversial, because the amount of blown and unmelted waste powder was observed in the outgoing flue gases.
Poznato je rješenje po patentnoj prijavi EP 0 625 485, gdje se sa mljevenim otpadom puni boce. There is a known solution according to patent application EP 0 625 485, where bottles are filled with ground waste.
Po PCT WO 95/04003 sirovine i otpad se odvojeno obrađuju i već otopljeni zajedno obrađuju u posebnoj talioničkoj jedinici. According to PCT WO 95/04003, raw materials and waste are processed separately and already melted are processed together in a special melting unit.
Problem koji do sada nije bio riješen na zadovoljavajući način je, kako otpad jednostavno vraćati u peć, i to bez prethodne obrade otpada, a da se pri tome ne onemogući protok dimnih plinova ili prouzroči neželjene emisije u okolinu. The problem that has not been satisfactorily solved so far is how to simply return the waste to the furnace, without prior processing of the waste, without preventing the flow of flue gases or causing unwanted emissions into the environment.
Po izumu je problem riješen s postupkom za vraćanje u kupolnu peć, gdje se otpad dodaje uz stijenku donjeg dijela peći, i to usklađeno sa punjenjem peći sa sirovinom i energentom, te s napravom gdje je između donjeg i gornjeg dijela peći rotirajući dio sa dodavačem otpada. According to the invention, the problem is solved with a process for returning to the dome furnace, where the waste is added to the wall of the lower part of the furnace, and this is coordinated with the filling of the furnace with raw material and energy, and with a device where there is a rotating part with a waste feeder between the lower and upper parts of the furnace .
Izumiteljskim razmišljanjem i uz potporu pokusima, utvrđeno je da dodavanje otpada u neprerađenom obliku tj. pretežno u obliku vlakana ili perli i manjih komada tik uz unutarnju stijenku donjeg dijela peći, i to u određenom sloju i usklađeno s punjenjem peći sa sirovinom i energentom ne smeta prohodu dimnih plinova, a ujedno se otpad tali u upotrebljivu talinu. Kao sporedni učinak, primjereno dimenzionirani sloj otpada uz stijenku donjeg dijela peći smanjuje potrebe za uobičajenim vodnim hlađenjem stijenke peći, te time doprinosi značajnoj energetskoj uštedi. Through inventive thinking and with the support of experiments, it was determined that adding waste in an unprocessed form, i.e. mainly in the form of fibers or beads and smaller pieces right next to the inner wall of the lower part of the furnace, in a certain layer and coordinated with the filling of the furnace with raw materials and energy, does not interfere the passage of flue gases, and at the same time the waste is melted into a usable melt. As a side effect, an appropriately sized layer of waste next to the wall of the lower part of the furnace reduces the need for the usual water cooling of the furnace wall, thus contributing to significant energy savings.
Takvim načinom doziranja se zbog smanjenja presjeka uloška sirovine i energenta smanjuje količina pretočenih dimnih plinova, te time posredno i pretočenog zraka za izgaranje koksa, ali se ovu manjkajuću količinu zraka nadomješta kisikom, te je tako očuvan prvotni kapacitet peći. Due to the reduction of the cross-section of the raw material cartridge and energy source, this dosing method reduces the amount of transferred flue gases, and thus indirectly also the transferred air for coke combustion, but this missing amount of air is replaced by oxygen, thus preserving the original capacity of the furnace.
Naprava za dodavanje kisika je standardna oprema peći, te je u osnovi namijenjena regulaciji temperature taline, kapacitetu kupolne peći, pogonu peći i slično. Zbog doziranja otpada uz unutarnju stijenku peći smanjuje direktan kontakt energenta sa stijenkom. The device for adding oxygen is a standard equipment of the furnace, and is basically intended for the regulation of the temperature of the melt, the capacity of the dome furnace, the operation of the furnace and the like. Due to the dosing of waste along the inner wall of the furnace, it reduces the direct contact of the energy source with the wall.
Stijenka, koja je uobičajeno vodno hlađena, se zbog toga manje grije. Utvrđeno je da se potrebno hlađenje smanji čak za polovicu, te da zato toplinska-energija koja bi inače bila hlađenjem odvedena ostane u peći, te se upotrijebi za taljenje sirovina. Takvim doziranjem otpada postignuta je djelomična izolacija unutarnje stijenke hlađene kupolne peći i time ušteda na energentu, čime su smanjene štetne emisije u okolini. Pošto je sloj otpada lociran na unutarnji obod stijenke, a sloj otpada je nepropusan za dimne plinove, s tijekom dimnih plinova u okolinu ne dolazi do izlaženja otpada iz peći. The wall, which is usually water-cooled, therefore heats up less. It has been established that the necessary cooling is reduced by half, and therefore the thermal energy that would otherwise be removed by cooling remains in the furnace and is used for melting raw materials. By such dosing of waste, partial insulation of the inner wall of the cooled dome furnace was achieved, thus saving on energy, which reduced harmful emissions in the environment. Since the waste layer is located on the inner perimeter of the wall, and the waste layer is impermeable to flue gases, no waste from the furnace is exposed to the environment with the flow of flue gases.
Naprava za vraćanje otpada u kupolne peći će po izumu biti opisana na izvedbenom primjeru i slikama koje prikazuju: According to the invention, the device for returning waste to dome furnaces will be described with an exemplary embodiment and pictures showing:
Sl.1 Kupolna peć u nacrtu, shematski Fig. 1 Dome furnace in the plan, schematic
Sl.2 Presjek kupolne peći s prikazom punjenja peći, shematski Fig. 2 Cross-section of a dome furnace showing the filling of the furnace, schematically
Sl.3 Detalj presjeka kupolne peći i dodavača otpada s pogonom Fig. 3 Detail of the cross-section of the dome furnace and the powered waste feeder
Sl.4 Detalj prve izvedbe vođenja rotirajućeg dijela peći Fig.4 Detail of the first version of guiding the rotating part of the furnace
Sl.5 Detalj druge izvedbe vođenja rotirajućeg dijela peći Fig.5 Detail of the second version of guiding the rotating part of the furnace
Sl.6 Presjek-tlocrt rotirajućeg dijela peći s dodavačem i vođenjem Fig. 6 Section-plan of the rotating part of the furnace with feeder and guide
Kupolna peć ima donji dio 1 sa-obično-vodno hlađenom stijenkom 8, gdje se preko puhača 6 upuhuje zrak, po potrebi obogaćen kisikom, potreban za izgaranje energenta, koji je obično koks. Donji dio 1 ima ispust 7 taline. U donjem dijelu 1 u predjelu puhača 6 odvija se postupak izgaranja energenta i taljenja sirovine, a iznad toga grijanje sirovina sa dimnim plinovima. Naprava je po izumu locirana između donjeg dijela 1 i gornjeg dijela 2. Gornji dio 2 služi za punjenje peći sa sirovinom i energentom preko transportera 5, te za odvod dimnih plinova sa dimnjakom 3. Kupolne peći za dobivanje silikatne taline obično nisu slobodnostojeće, već su ugrađene u nosivu konstrukciju i dignute od poda. Prema sl.1 su donji dio 1, te gornji dio 2 fiksirani nosačima 22, koji su zbog preglednosti na slikama prikazani samo shematski. The cupola furnace has a lower part 1 with a usually water-cooled wall 8, where air, enriched with oxygen if necessary, is blown through the blower 6, necessary for the combustion of the fuel, which is usually coke. The lower part 1 has a melt outlet 7. In the lower part 1, in the area of the blower 6, the process of burning the energy source and melting the raw material takes place, and above that, the raw material is heated with flue gases. According to the invention, the device is located between the lower part 1 and the upper part 2. The upper part 2 is used for filling the furnace with raw materials and energy via the conveyor 5, and for exhausting flue gases with the chimney 3. Dome furnaces for obtaining silicate melt are usually not free-standing, but are built into the load-bearing structure and raised from the floor. According to Fig. 1, the lower part 1 and the upper part 2 are fixed with supports 22, which are shown only schematically for clarity.
Napravu po izumu i izvedbenom primjeru sačinjavaju rotirajući dio. 4 sa dodavačem 10, te nosivim strukturama 13, te glavni obruč 11 i pogonski obruč 12 na vanjskom obodu gornjeg ruba donjeg dijela 1 peći. Raspored nosivih struktura 13 po obodu rotirajućeg dijela 4 je na slici 1 zbog preglednosti prikazan drukčije nego je pravilno prikazan na slici 4. The device according to the invention and embodiment consists of a rotating part. 4 with the feeder 10, and supporting structures 13, and the main ring 11 and drive ring 12 on the outer rim of the upper edge of the lower part 1 of the furnace. The layout of the load-bearing structures 13 around the circumference of the rotating part 4 is shown differently in Figure 1 for clarity than it is shown correctly in Figure 4.
Rotirajući dio 4 je što više plinonepropusno smješten između donjeg dijela 1 i gornjeg dijela 2. The rotating part 4 is located as gas-tight as possible between the lower part 1 and the upper part 2.
Rotirajući dio 4 ima pričvršćen dodavač 10 otpada 27, kojeg sačinjavaju pužasti transporteri pokretani pogonom 17. Gornji dio dodavača je rezervoar 18 za otpad 27. Dodavač 10 sa strane ima pogon 14 sa zupčastim kotačem 21. U unutrašnjosti peći je na rotirajućem dijelu 4 iznad dodavača 10 usmjerivač 15, koji otpad 27 kojeg pužni transporter gura u peć usmjeri uz unutarnju stijenku donjeg dijela 1 peći. Usmjerivač 15 je izrađen kao zaslon pod oštrim kutem sa stijenkom rotirajućeg dijela 4 preko izlaza dodavača 10. The rotating part 4 has an attached waste feeder 10 27, which consists of screw conveyors driven by a drive 17. The upper part of the feeder is a tank 18 for waste 27. The feeder 10 has a drive 14 on the side with a toothed wheel 21. Inside the furnace, it is on the rotating part 4 above the feeder 10, the guide 15, which directs the waste 27 that the screw conveyor pushes into the furnace along the inner wall of the lower part 1 of the furnace. The diverter 15 is made as a screen at an acute angle with the wall of the rotating part 4 over the outlet of the feeder 10.
Rotirajući dio 4 ima po obodu pričvršćene najmanje tri nosive strukture 13, prema prvom izvedbenom primjeru i prema Sl.1 i Sl.4 s horizontalnim kotačima 19 i vertikalnim kotačima 20 i 24. Nosivih struktura 13 je normalno toliko da su zagarantirani statički i stabilnosni zahtjevi, ovisno o dimenzioniranju i konstrukciji. Nosive strukture 13 omogućavaju vrtnju rotirajućeg dijela 4 po vodećem obruču 11 smještenom na gornjem obodu donjeg dijela 1 peći. Horizontalni kotači 19 vode rotirajući dio 4 u horizontalnom smjeru, a vertikalni kotači 20 i 24 nose rotirajući dio 4, te ga vode u vertikalnom smjeru i to svi kotači 19, 20 i 24 po vodećem obruču 11, smještenom na gornji obod donjeg dijela 1 peći. Nosivi obruč 11 je strukturno povezan sa pogonskim obručem 12, koji je po svom vanjskom obodu nazubljen, i to tako da se slaže sa zupčastim kotačem 21 pogona 14 na dodavaču 10. The rotating part 4 has at least three load-bearing structures 13 attached around the circumference, according to the first embodiment and according to Fig. 1 and Fig. 4 with horizontal wheels 19 and vertical wheels 20 and 24. There are normally enough load-bearing structures 13 to guarantee static and stability requirements , depending on dimensioning and construction. The bearing structures 13 enable the rotation of the rotating part 4 on the guide ring 11 located on the upper rim of the lower part 1 of the furnace. The horizontal wheels 19 guide the rotating part 4 in the horizontal direction, and the vertical wheels 20 and 24 carry the rotating part 4, and guide it in the vertical direction, and all the wheels 19, 20 and 24 along the guide ring 11, located on the upper rim of the lower part 1 of the furnace . The bearing ring 11 is structurally connected to the drive ring 12, which is toothed on its outer rim, and this in such a way that it matches the toothed wheel 21 of the drive 14 on the feeder 10.
Naravno moguć je i drugačiji raspored obruča i nosivih struktura s kotačima. Prema drugom izvedbenom primjeru, prema Sl.5, je za vertikalno vođenje dodan vodeći obruč 23 na donjem obodu gornjeg dijela 2 peći, a nosiva struktura 13 je oblikovana tako, da vertikalni kotač 25 naliježe na obruč 23. Of course, a different arrangement of hoops and load-bearing structures with wheels is also possible. According to another embodiment, according to Fig. 5, a guide ring 23 is added for vertical guidance on the lower rim of the upper part 2 of the furnace, and the supporting structure 13 is designed so that the vertical wheel 25 rests on the ring 23.
Nadalje, moguće su i izvedbe tako da su nosive strukture ili dijelovi nosivih struktura na donjem dijelu 1 ili/i gornjem dijelu 2 peći, te je jedan ili više vodećih obruča na rotirajućem dijelu 4. Moguće su i kombinacije gdje su dijelovi nosivih struktura, kako na donjem dijelu 1, tako i na gornjem dijelu 2 i rotirajućem dijelu 4, te je jedan ili više vodećih obruča ili/i na donjem dijelu 1, kao i na gornjem dijelu 2 i rotirajućem dijelu 4. Furthermore, designs are also possible so that the load-bearing structures or parts of the load-bearing structures are on the lower part 1 and/or the upper part 2 of the furnace, and one or more guide rings are on the rotating part 4. Combinations are also possible where the parts of the load-bearing structures are, as on the lower part 1, as well as on the upper part 2 and the rotating part 4, and there is one or more guide rings and/or on the lower part 1, as well as on the upper part 2 and the rotating part 4.
Isto tako je moguća izvedba s pogonskim kotačem na obodu rotirajućeg dijela 4 i s pogonom 14 na donjem dijelu 1 ili na gornjem dijelu 2. It is also possible to design with a drive wheel on the periphery of the rotating part 4 and with a drive 14 on the lower part 1 or on the upper part 2.
Punjenje peći teče tako, da se u stanju mirovanja preko punjača 9 napuni rezervoar 18 dodavača 10 s otpadom 27. Punjenje peći počne kada senzor nivoa punjenja peći utvrdi da je potrebno novo punjenje peći. Furnace filling proceeds in such a way that, in a state of rest, the reservoir 18 of the feeder 10 is filled with waste 27 via the charger 9. Furnace filling begins when the furnace filling level sensor determines that a new furnace filling is necessary.
Pogon 17 preko pužnog transportera počne gurati otpad 27 u peć i istovremeno počne pogon 14 preko zupčastog točka 21 uz sudjelovanje s pogonskim obručem 12 rotirati rotirajući dio 4. Otpad 27 usmjerava usmjerivač 15 tijesno uz unutarnji dio stijenke 8 donjeg dijela 1. Iskustva su pokazala da je najpovoljnije ako uz jedno punjenje otpada 27 dodavač 10 zarotira za dva kruga. Isto tako su iskustva pokazala da je najpovoljnije ako punjenje počne sa sirovinom i energentom ili mješavinom 26 sirovine i energenta kad je u peć već dodan otpad 27. Punjenje peći sa sirovinom i energentom ili mješavinom 26 sirovine i energenta lako može teći na poznati način i peć u tom smislu po izumu nije potrebno mijenjati. Jasno da navedeni raspored punjenja peći ne ograničava izum, te je po izumu moguće bilo kakvo uzastopno, ali i istovremeno punjenje peći s otpadom 27 i mješavinom 26, ali uvijek tako da je otpad 27 punjen uz unutarnji dio stijenke 8 donjeg dijela 1 peći. The drive 17 starts to push the waste 27 into the furnace via the screw conveyor and at the same time the drive 14 starts to rotate the rotating part 4 through the toothed point 21 with the participation of the drive ring 12. The waste 27 directs the router 15 closely to the inner part of the wall 8 of the lower part 1. Experience has shown that is most favorable if the feeder 10 rotates for two rounds with one filling of waste 27. Likewise, experience has shown that it is most advantageous if the filling starts with raw material and energy or a mixture 26 of raw material and energy when waste 27 has already been added to the furnace. Filling the furnace with raw material and energy or a mixture of 26 raw material and energy can easily proceed in a known way and the furnace in this sense, according to the invention, it is not necessary to change. It is clear that the above arrangement of filling the furnace does not limit the invention, and according to the invention, any sequential or simultaneous filling of the furnace with waste 27 and mixture 26 is possible, but always in such a way that the waste 27 is filled against the inner part of the wall 8 of the lower part 1 of the furnace.
Na Sl.2 su u shematskom presjeku peći prikazana uzastopna punjenja sa otpadom 27, sirovinom i energentom ili mješavinom 26 sirovine i energenta. Pošto se otpad 27 kod punjenja sužava, debljina sloja otpada 27 uz stijenku 8 je između 0 cm i približno 25 cm. Fig. 2 shows a schematic cross-section of the furnace with successive fillings with waste 27, raw material and energy source or mixture 26 of raw material and energy source. Since the waste 27 narrows during filling, the thickness of the layer of waste 27 next to the wall 8 is between 0 cm and approximately 25 cm.
Claims (11)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI9600236A SI9600236B (en) | 1996-07-24 | 1996-07-24 | Procedure and device for returning the waste into dome furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| HRP970335A2 true HRP970335A2 (en) | 1998-08-31 |
| HRP970335B1 HRP970335B1 (en) | 2000-10-31 |
Family
ID=20431879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| HRP-9600236 HRP970335B1 (en) | 1996-07-24 | 1997-06-17 | Process and device for returning scrap into cupola furnance |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0914296A1 (en) |
| CZ (1) | CZ18099A3 (en) |
| HR (1) | HRP970335B1 (en) |
| SI (1) | SI9600236B (en) |
| SK (1) | SK9299A3 (en) |
| WO (1) | WO1998003438A1 (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3328149A (en) * | 1963-07-26 | 1967-06-27 | Owens Illinois Inc | Glass melting furnace |
| USRE30674E (en) * | 1977-12-29 | 1981-07-14 | Johns-Manville Corporation | Method and apparatus for feeding a glass melting furnace |
| FR2432999A1 (en) * | 1978-08-08 | 1980-03-07 | Central Glass Co Ltd | PROCESS FOR THE CONTINUOUS PREPARATION OF MOLTEN GLASS USING GLASS USED, SAID AS WASTE OR SCRAP AS PART OF THE INGREDIENTS |
| US4285713A (en) * | 1980-01-14 | 1981-08-25 | Johns-Manville Corporation | Method and apparatus for feeding batch material |
| US4422862A (en) * | 1982-03-12 | 1983-12-27 | Owens-Corning Fiberglas Corporation | Process for reusing scrap glass |
| FR2593092B1 (en) * | 1986-01-23 | 1990-08-03 | Wanner Isofi Isolation | AUTONOMOUS PROCESS AND DEVICE FOR THE TREATMENT OF WASTE GLASS WOOL FOR SCRAPPING. |
| AT386009B (en) * | 1986-10-30 | 1988-06-27 | Voest Alpine Ag | METHOD AND OVEN FOR MELTING FINE PARTICULAR MATERIAL, ESPECIALLY METAL OR METAL OXIDE CONTAINING DUST |
| IT1263909B (en) * | 1993-02-12 | 1996-09-05 | Balzaretti Modigliani Spa | INTRODUCTION OF POWDER ADDITIVES INTO PIPES THAT FEED AN OVEN WITH FUEL |
| EP0823266A1 (en) * | 1994-05-26 | 1998-02-11 | Metallgesellschaft Aktiengesellschaft | Process and device for the disposal of carbonised coke and/or pyrolysis dust |
-
1996
- 1996-07-24 SI SI9600236A patent/SI9600236B/en not_active IP Right Cessation
-
1997
- 1997-06-17 HR HRP-9600236 patent/HRP970335B1/en not_active IP Right Cessation
- 1997-07-18 CZ CZ99180A patent/CZ18099A3/en unknown
- 1997-07-18 SK SK92-99A patent/SK9299A3/en unknown
- 1997-07-18 WO PCT/SI1997/000023 patent/WO1998003438A1/en not_active Application Discontinuation
- 1997-07-18 EP EP19970930974 patent/EP0914296A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CZ18099A3 (en) | 1999-08-11 |
| SK9299A3 (en) | 1999-06-11 |
| SI9600236A (en) | 1998-02-28 |
| HRP970335B1 (en) | 2000-10-31 |
| EP0914296A1 (en) | 1999-05-12 |
| WO1998003438A1 (en) | 1998-01-29 |
| SI9600236B (en) | 2004-06-30 |
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