SI9600236A - Procedure and device for returning the waste into dome furnace - Google Patents
Procedure and device for returning the waste into dome furnace Download PDFInfo
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- SI9600236A SI9600236A SI9600236A SI9600236A SI9600236A SI 9600236 A SI9600236 A SI 9600236A SI 9600236 A SI9600236 A SI 9600236A SI 9600236 A SI9600236 A SI 9600236A SI 9600236 A SI9600236 A SI 9600236A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B3/00—Charging the melting furnaces
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- 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
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- 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
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- 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
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- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Charging Or Discharging (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (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)
Abstract
Description
POSTOPEK IN NAPRAVA ZA VRAČANJE ODPADA V KUPOLNE PEČIPROCEDURE AND DEVICE FOR RETURNING WASTE TO DOMESTIC OVENS
Predmet izuma je postopek za vračanje odpada v kupolno peč za pripravo silikatne taline za izdelavo mineralne volne ter naprava za vračanje odpada v kupolno peč za pripravo silikatne taline za izdelavo mineralne volne.The subject of the invention is a process for returning waste to a dome furnace for the preparation of a silicate melt for the manufacture of mineral wool and a device for returning waste to a dome furnace for the preparation of a silicate melt for the manufacture of mineral wool.
Izum obravnava vračanje odpada oziroma izmeta, ki nastaja pri proizvodnji mineralne volne, nazaj v proces. Silikatna talina, ki se proizvaja v kupolnih pečeh iz kosovnih surovin običajne granulacije od 30 do 200 mm, se najpogosteje uporablja za proizvodnjo mineralne volne. Pri tem procesu nastaja odpad, ki gaje pri razvlaknanju silikatne taline, odvisno od postopka razvlaknanja, do 30% teže silikatne taline. Prav tako prihaja do odpada tekom nadaljnje predelave mineralne volne, to je na celotni proizvodni liniji. Odpad je običajno v vlaknasti ali perlasti obliki. Ta odpad predstavlja ekološko in ekonomsko obremenitev.The invention relates to the return to the process of waste, or waste, resulting from the production of mineral wool. Silicate melt, which is produced in domed furnaces from bulky raw materials of the usual granulation of 30 to 200 mm, is most commonly used for the production of mineral wool. This process generates waste, which is 30% by weight of the silicate melt, depending on the process of removal of the silicate melt. Waste also occurs during the further processing of mineral wool, that is, throughout the production line. The waste is usually in fibrous or pearly form. This waste represents an ecological and economic burden.
Silikatna talina se izdeluje v kupolnih pečeh. Kupolna peč za proizvodnjo silikatne taline je posebna izvedba jaškaste peči, kije sestavljena iz vertikalno stoječe, največkrat dvostenske, vodno hlajene železne cevi, ki je spodaj zaprta z demontažnim pokrovom, obzidanim z ognjevzdržno maso. Doziranje surovine in energenta poteka s pomočjo dozirne naprave iz zgornjega konca. Energent, ki daje energijo za taljenje, je običajno koks. Za zgorevanje kosksa je v spodnjem delu kupolne peči dovedena preko niza pihalic potrebna količina kisika oziroma zraka. Pri zgorevanju koksa se v kupolni peči sprosti toplota, ki se odraža v reakcijskih temperaturah nad 1500 °C, tako da pride do taljenja surovin. Talina se zaradi težnosti zbira v spodnjem delu peči in odteka preko stranske odprtine do stroja za razvlaknanje. Dimni plini, ki nastajajo pri zgorevanju koksa, odtekajo po vmesnih prostorih med kosi koksa in surovine proti gornjemu delu peči, kjer je nameščen dimnik oziroma cevovod za odses. Na ta način dimni plini predgrevajo nad talino ležeče kose surovine. Surovine za proizvodnjo silikatne taline so najpogosteje diabaz, bazalt, amfibolit in druge primerne mineralne alumosilikatne magmatske kamenine ali pa različne vrste metalurških žlinder.Silicate melt is produced in domed furnaces. The dome furnace for the production of silicate melt is a special version of a shaft furnace consisting of a vertically standing, mostly double-walled, water-cooled iron pipe, which is closed below by a dismantling lid walled with refractory mass. The dosing of the raw material and energy is carried out by means of a metering device from the upper end. The energy that gives the energy to melt is usually coke. The amount of oxygen or air required in the lower part of the dome furnace is supplied to the combustion of the coke via a series of blowers. In the combustion of coke, heat is released in the dome furnace, which is reflected in reaction temperatures above 1500 ° C, thus melting the feedstock. Due to gravity, the melt collects in the lower part of the furnace and flows through the side opening to the retractor. The flue gases produced by the coke combustion flow through the spaces between the pieces of coke and the raw material towards the top of the stove, where the chimney or exhaust duct is installed. In this way, the flue gas preheats the raw material above the melt. Raw materials for the production of silicate melt are mostly diabase, basalt, amphibolite and other suitable mineral aluminosilicate magmatic rocks or various types of metallurgical slag.
Za proizvodnjo taline v kupolnih pečeh je po znanem stanju mogoče uporabljati le surovine in energente v kosovni obliki. Drugačnega pristopa za kupolne peči doslej še ni bilo uporabljenega, saj je po dosedanjem stanju tehnike veljalo, da je za kupolne peči uporaben le material, ki ima kose oziroma jedra večja od 30 mm, kar edino omogoča pretok dimnih plinov po vložku surovine in energenta od mesta nastanka dimnih plinov do izstopa iz peči. Problem pa je v tem, da je odpadOnly the raw materials and energy products in bulky form can be used for the production of melt in dome furnaces. A different approach for dome furnaces has not been used so far, since according to the prior art, only material having pieces or cores larger than 30 mm was considered to be used, which only allows flue gas to flow through the feedstock and energy input from the where flue gas is generated until the exit of the furnace. The problem, however, is that it is waste
-2običajno oziroma pretežno v vlaknasti ali perlasti, to je nekosovni obliki in bi njegovo nekontrolirano dodajanje surovini in energentu preprečilo pretok dimnih plinov.-2 normally or mainly in fibrous or pearly, non-axial form and its uncontrolled addition to the raw material and energy would prevent the flow of flue gases.
Iz ekoloških in ekonomskih razlogov so že razviti postopki vračanja odpada v peč.For ecological and economic reasons, waste recovery processes have already been developed.
Najbolj običajen je postopek briketiranja, kjer se odpad zmelje do željene granulacije in z dodatkom cementa v kalupih stisne v brikete, ki ob utrjevanju cementa dajo odpadu potrebno kosovno oblko, velikost in trdnost.The most common is the briquetting process, where the waste is ground to the desired granulation and, with the addition of cement in the molds, compressed into briquettes, which, upon curing the cement, give the waste the necessary bulky cloud, size and strength.
Znano je vpihavanje zmletega odpada skupaj z zrakom za zgorevanje skozi pihalice. V tem primeru je potrebno mletje odpada, hkrati pa je rešitev ekološko sporna, saj je v izstopnih dimnih plinih opazna količina vpihanega in nestaljenega prahu odpada.It is known to blow ground waste together with combustion air through the blowers. In this case, grinding of the waste is necessary, but at the same time the solution is ecologically controversial, since the amount of blown and non-evaporated dust of the waste is noticeable in the exhaust fumes.
Znana je rešitev po patentni prijavi EP 0 625 485, kjer se z zmletim odpadom polni steklenice.There is a known solution according to patent application EP 0 625 485, where bottled waste is filled with bottles.
Po PCT WO 95/04003 se ločeno obdelujejo surovine in odpad in se šele že staljena skupno obdelata v posebni talilni enoti.According to PCT WO 95/04003, raw materials and waste are treated separately and are already molten together in a separate melting unit.
Problem, ki doslej ni bil zadovoljivo rešen je, kako odpad enostavno vračati v peč in to brez predhodne obdelave odpada, ne da bi s tem onemogočili pretoka dimnih plinov ali povzročili nezaželjene emisije v okolje.A problem that has not been satisfactorily solved so far is how easy it is to return the waste to the furnace without waste treatment beforehand, without blocking the flow of flue gases or causing unwanted emissions into the environment.
Po izumu je problem rešen s postopkom za vračanje odpada v kupolno peč, kjer se odpad dodaja ob steno spodnjega dela peči in to vsklajeno s polnjenem peči s surovino in energentom, ter z napravo, kjer je med spodnjim in gornjim delom peči rotirajoči del z dodajalnikom odpada.According to the invention, the problem is solved by a process for returning waste to a dome furnace, where the waste is added to the wall of the lower part of the furnace, in conjunction with the filled furnace with raw material and energy, and a device with a rotating part with a feeder between the lower and upper parts of the furnace. waste.
Z izumiteljskim razmislekom in podprto s poskusi je bilo ugotovljeno, da dodajanje odpada v nepredelani obliki, to je pretežno v obliki vlaken, vendar tudi perl in manjših kosov, tik ob notranjo steno spodnjega dela peči in to v določeni debelini plasti in vsklajeno s polnjenjem peči s surovino in energentom ne ovira prehoda dimnih plinov, hkrati pa se odpad stali v uporabno talino. Kot stranski učinek primerno dimenzionirana plast odpada ob steni spodnjega dela peči zmanjšuje potrebe po - običajno vodnem - hlajenju stene peči in s tem pomeni pomemben energetski prihranek.It was found by inventive thinking and supported by experiments that the addition of wastes in the unprocessed form, that is, predominantly in the form of fibers, but also in beads and smaller pieces, right next to the inner wall of the lower part of the furnace, in a certain thickness of the layer and coordinated with the furnace filling it does not impede the passage of flue gases with the raw material and the energy, but at the same time the waste is melted into a usable melt. As a side effect, an appropriately sized waste layer at the bottom of the furnace wall reduces the need for - typically water - cooling of the furnace wall and thus results in significant energy savings.
S takšnim načinom doziranja se zaradi zmanjšanja svetlega prečnega preseka vložka surovine in energenta zmanjša količina pretečenih dimnih plinov in s tem posredno tudi pretečenega zraka za zgorevanje koksa, vendar se to manjkajočo količino zraka nadomesti s kisikom in je tako ohranjena prvotna kapaciteta peči. Naprava za dodajanje kisika je standardna oprema peci in je v osnovi namenjena regulaciji temperature taline, kapacitete kupolne peči, zagonu peči in podobno. Zaradi doziranja odpada ob notranjo steno peči je zmanjšan direkten kontakt energenta s steno. Stena, kiThis method of dosing reduces the amount of flue gas leaked and thus indirectly leaked coke combustion air to reduce the bright cross-section of the feedstock and energy source, but this missing air volume is replaced by the original furnace capacity. The oxygen feeder is standard furnace equipment and is basically designed to regulate melt temperature, dome capacity, furnace start-up and the like. Due to the dosage of waste at the inner wall of the stove, direct contact of the energy source with the wall is reduced. The wall that
-3je običajno vodno hlajena se s zato manj segreva. Ugotovljeno je, da se potrebno hlajenje zmanjša celo do polovice in da torej toplotna energija ki bi sicer bila s hlajenjem odvedena, ostane v peči in se uporabi za taljenje surovine. S takim doziranjem odpada je dosežena delna izolacija notranje stene hlajene kupolne peči in s tem prihranek na energentu s čimer so zmanjšane škodljive emisije v okolje. Ker je plast odpada locirana na notranji obod stene, plast odpada pa je nepropustna za dimne pline, ne pride do odnašanja odpada iz peči s tokom dimnih plinov v okolje.-3 is usually water-cooled with less heat. It is found that the required cooling is reduced even by half, and therefore the thermal energy that would otherwise be dissipated by cooling remains in the furnace and used for melting the raw material. This waste metering results in partial insulation of the inner wall of the cooled dome furnace, thus saving energy, thus reducing harmful emissions to the environment. Since the waste layer is located on the inner perimeter of the wall and the waste layer is impermeable to the flue gas, the waste from the furnace with the flue gas stream does not discharge into the environment.
Naprava za vračanje odpada v kupolne peči po izumu bo opisana na izvedbenem primeru in slikah, ki kažejo:An apparatus for returning waste to a dome furnace according to the invention will be described in the embodiment and figures showing:
Sl. 1 Kupolna peč v narisu, shematskoFIG. 1 Dome furnace in outline, schematic
Sl. 2 Prerez kupone peči s prikazom politnve peči, shematskoFIG. 2 Cross-section of the furnace coupon showing the furnace, schematic
Sl. 3 Detalj prereza kupolne peči in dodajalnika odpada s pogonomFIG. 3 The cross-section of the dome furnace and the feeder is actuated
Sl. 4 Detajl prve izvedbe vodenja rotirajočega dela pečiFIG. 4 Detail of the first design of running the rotating part of the furnace
Sl. 5 Detajl druge izvedbe vodenja rotirajočega dela pečiFIG. 5 Detail of another embodiment of running a rotary kiln
Sl. 6 Prerez-tloris rotirajočega dela peči z dodajalnikom in vodenjemFIG. 6 Cross-sectional view of the rotary kiln with feeder and guide
Kupolna peč ima spodnji del 1 z - običajno - vodno hlajeno steno 8, kjer se preko pihalic 6 vpihava zrak, po potrebi obogaten s kisikom, potreben za gorenje energenta, ki je običajno koks. Spodnji del 1 ima izpust 7 taline. V spodnjem delu 1 v predelu pihalic 6 poteka postopek gorenja energenta in teljenja surovine, nad tem pa predgretje surovin z dimnimi plini. Naprava po izumu je locirana med spodnjim delm 1 in gornjim delom 2. Gornji del 2 služi za polnjenje peči s surovino in energentom preko transporterja 5 ter za odvod dimnih plinov z dimnikom 3. Kupolne peči za pridobivanje silikatne taline občajno niso prosto-stoječe, temveč so vpete v nosilno konstrukcijo in dvignjene od tal. Po Sl. 1 sta spodnji del 1 ter gornji del 2 sta fiksirana z nosilci 22, ki so zaradi preglednosti na slikah prikazani zgolj shematsko.The dome furnace has a lower part 1 with - usually - a water-cooled wall 8, where air is blown through the blowers 6, if necessary enriched with oxygen, necessary for burning the energy, which is usually coke. The lower part 1 has a discharge 7 melt. In the lower part 1 in the area of the blowers 6 is the process of burning the energy and calving of the raw material, above which the preheating of the raw materials with flue gases. The device according to the invention is located between the lower part 1 and the upper part 2. The upper part 2 is used for filling the furnace with raw material and energy through the conveyor 5 and for exhaust flue gas with the chimney 3. Dome furnaces for silicate melt extraction are usually not free-standing, but they are fixed in the load-bearing structure and raised from the ground. According to FIG. 1 are the lower part 1 and the upper part 2 are fixed with supports 22 which are shown only schematically for the sake of clarity.
Napravo po izumu in izvedbenem primeru sestavljajo rotirajoči del 4 z dodajalnikom 10 ter nosilnimi strukturami 13 ter vodilni obroč 11 in pogonski obroč 12 na zunanjem obodu gornjega roba spodnjega dela 1 peči. Razporeditev nosilnih struktur 13 po obodu rotirajočega dela 4 je na sliki 1 zaradi preglednosti prikazana drugače, kot je pravilno prikazana na sliki 4.The device according to the invention and the embodiment consists of a rotating part 4 with feeder 10 and supporting structures 13 and a guide ring 11 and a drive ring 12 at the outer circumference of the upper edge of the lower part 1 of the furnace. The arrangement of the supporting structures 13 around the circumference of the rotating part 4 is shown in Fig. 1 for reasons of transparency other than correctly shown in Fig. 4.
Rotirajoči del 4 je čimbolj plinotesno nameščen med spodnji del 1 in gornji del 2.The rotating part 4 is positioned as gaseously as possible between the lower part 1 and the upper part 2.
Rotirajoči del 4 ima pričvrščen dodajalnik 10 odpada 27, ki ga sestavljajo polžasti transporterji, gnani s pogonom 17. Gornji del dodajalnika je rezervoar 18 za odpad 27. Dodajalnik 10 ima ob strani pogon 14 z zobatim kolesom 21. V notranjosti peči je na rotirajočem delu 4 nad dodajalnikom 10The rotating part 4 has an attachment 10 of the waste 27, which consists of screw conveyors driven by a drive 17. The upper part of the feeder is a waste tank 18. The feeder 10 has a drive 14 with a toothed wheel 21 on the side. Inside the furnace there is a rotating part. 4 above the feeder 10
-4usmerjevalnik 15, ki odpad 27, ki ga polžni transporter potiska v peč usmeri ob notranjo steno spodnjega dela 1 peči. Usmerjevalnik 15 je izdelan kot zaslon pod ostrim kotom s steno rotirajočega dela 4 preko izhoda dodajalnika 10.-4direction 15, which is waste 27, which is directed by the auger conveyor into the furnace at the inner wall of the lower part 1 of the furnace. The router 15 is designed as a screen at an acute angle with the wall of the rotating part 4 via the output of the feeder 10.
Rotirajoči del 4 ima po obodu pričvrščene najmanj tri nosilne strukture 13, po prvem izvedbenem primeru in po Sl. 1 in Sl. 4 s horizontalnimi kolesi 19 in vertikalnimi kolesi 20 in 24. Nosilnih struktur 13 je seveda toliko, da so zagotovljene statične in stabilnostne zahteve, pač odvisno od dimenzioniranja in konstrukcije. Nosilne strukture 13 omogočajo vrtenje rotirajočega dela 4 po vodilnem obroču 11 nameščenim na gornji obod spodnjega dela 1 peči. Horzontalna kolesa 19 vodijo rotirajoči del 4 v horizontalni smeri, vertikalnima kolesa 20 in 24 pa nosijo rotirajoči del 4 in ga vodijo v vertikalni smeri in to vsa kolesa 19, 20 in 24 po vodilnem obroču 11, nameščenim na gornji obod spodnjega dela 1 peči. Nosilni obroč 11 je strukturno povezan s pogonskim obročem 12, ki je po svojem zunanjem obodu ozobljen in sicer tako, da se ujema z zobatim kolesom 21 pogona 14 na dodajalniku 10.The rotating part 4 has at least three supporting structures 13 attached to 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. Of course, the load-bearing structures 13 are such that static and stability requirements are guaranteed, depending on the dimensioning and construction. The supporting structures 13 allow rotation of the rotating part 4 along the guide ring 11 mounted on the upper circumference of the lower part 1 of the furnace. Horizontal wheels 19 guide the rotating part 4 horizontally, and the vertical wheels 20 and 24 carry the rotating part 4 and guide it vertically, all wheels 19, 20 and 24 along the guide ring 11 mounted on the upper circumference of the lower part 1 of the furnace. The bearing ring 11 is structurally connected to the drive ring 12, which is toothed at its outer periphery to match the toothed wheel 21 of the drive 14 on the feeder 10.
Seveda so mogoče tudi drugačne razmestitve obročev in nosilnih struktur s kolesi. Po drugem izvedbenem primeru po Sl. 5 je za vertikalno vodenje dodan vodilni obroč 23 na spodnjem obodu gornjega dela 2 peči, nosilna struktura 13 pa je oblikovana tako, da vertikalno kolo 25 nalega na obroč 23.Of course, it is also possible to have different wheel and wheel structures. According to another embodiment of FIG. 5, a guide ring 23 is added for vertical guidance 23 at the lower periphery of the upper portion 2 of the furnace, and the supporting structure 13 is formed such that the vertical wheel 25 rests on the ring 23.
Nadalje so mogoče izvedbe tako, da so nosilne strukture ali deli nosilnih struktur na spodnjem delu 1 ali/in gornjem delu 2 peči in je eden ali več vodilnih obročev na rotirajočem delu 4. Mogoče so tudi kombinacije, kjer so deli nosilnih struktur tako na spodnjem delu 1 kot tudi na gornjem delu 2 in rotirajočem delu 4 ter je eden ali več vodilnih obročev ali/in na spodnjem delu 1 kot tudi na gornjem delu 2 in rotirajočem delu 4.Furthermore, embodiments may be provided such that the supporting structures or portions of the supporting structures are on the lower part 1 or / and the upper portion 2 of the furnace and there is one or more guide rings on the rotating part 4. There may also be combinations where the parts of the supporting structures are on the lower part 1 as well as the upper part 2 and the rotating part 4 and one or more guide rings or / and the lower part 1 as well as the upper part 2 and the rotating part 4.
Prav tako je mogoča izvedba s pogonskim kolesom na obodu rotirajočega dela 4 in s pogonom 14 na spodnjem delu 1 ali na gornjem delu 2It is also possible to have a drive wheel on the periphery of the rotating part 4 and a drive 14 on the lower part 1 or on the upper part 2
Polnjenje peči poteka tako, da se v stanju mirovanja preko polnilnika 9 napolni rezervoar 18 dodajalnika 10 z odpadom 27. Polnjenje peči se začne, ko senzor nivoja polnitve peči ugotovi, da je potrebna nova polnitev peči. Pogon 17 preko polžnega transporterja prične potiskati odpad 27 v peč in istočasno začne pogon 14 preko zobatega kolesa 21 v sodelovanju s pogonskim obročem 12 rotirati rotirajoči del 4. Odpad 27 usmerja usmerjevalnik 15 tesno ob notranji del stene 8 spodnjega dela 1. Izkušnje so pokazale, da je najugodneje, če ob enem polnjenju odpada 27 dodajalnik 10 zarotira za dva kroga. Pravtako so izkušnje pokazale, da je najugodneje če se pričneFilling of the furnace is carried out by filling the reservoir 18 of the feeder 10 with the waste 27 in the idle state. Filling of the furnace begins when the furnace charge level sensor determines that a new furnace filling is required. The actuator 17 starts pushing the waste 27 into the furnace via a screw conveyor and at the same time the actuator 14 rotates the rotating part 4 in cooperation with 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 that it is most advantageous if, at one charge, 27, the feeder 10 rotates for two rounds. In addition, experience has shown that it is best to start
-5polnitev s surovino in energentom ali mešanico 26 surovine in energenta ko je v peč že dodan odpad 27. Polnjenje peči s surovino in energentom ali mešanico 26 surovine in energenta lahko poteka na znan način in peči v tem smislu po izumu ni potrebno spreminjati. Seveda pa navedeno zaporedje polnjenja peči ne omejuje izuma in je po izumu mogoče kakršnokoli zaporedno ali tudi sočasno polnjenje peči z odpadom 27 in mešanico 26 vendar vedno tako, da je odpad 27 polnjen ob notranji del stene 8 spodnjega dela 1 peči.-5 Filling with raw material and energy or mixture 26 of raw material and energy when waste has already been added to the furnace 27. Filling of the furnace with raw material and energy or mixture of raw material and energy 26 may be carried out in a known manner and the furnace does not need to be modified in this sense. Of course, said furnace filling sequence does not limit the invention, and according to the invention, any sequential or simultaneous filling of the furnace with the waste 27 and the mixture 26 can always be done so that the waste 27 is filled into the inner part of the wall 8 of the lower part 1 of the furnace.
Na Sl. 2 so v shematskem prerezu peči prikazane zaporedne politve z odpadom 27 in surovino in energentom ali mešanico 26 surovine in energenta. Ker se odpad 27 ob polnjenju sesuva, je debelina plasti odpada 27 ob steni 8 med 0 cm in približno 25 cm.In FIG. 2, a schematic cross-sectional view of the furnace shows successive poles with waste 27 and raw material and energy, or a mixture of 26 raw material and energy. As the waste 27 collapses upon filling, the thickness of the waste 27 along wall 8 is between 0 cm and about 25 cm.
Claims (11)
Priority Applications (6)
| 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 |
| HRP-9600236 HRP970335B1 (en) | 1996-07-24 | 1997-06-17 | Process and device for returning scrap into cupola furnance |
| EP19970930974 EP0914296A1 (en) | 1996-07-24 | 1997-07-18 | Process and device for returning scrap into cupola furnace |
| PCT/SI1997/000023 WO1998003438A1 (en) | 1996-07-24 | 1997-07-18 | Process and device for returning scrap into cupola furnace |
| SK92-99A SK9299A3 (en) | 1996-07-24 | 1997-07-18 | Process and device for returning scrap into cupola furnace for preparing silicate melt for the production of rock wool |
| CZ99180A CZ18099A3 (en) | 1996-07-24 | 1997-07-18 | Method of returning residual material back to cupola furnace and apparatus for making the same |
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 |
|---|---|
| SI9600236A true SI9600236A (en) | 1998-02-28 |
| SI9600236B SI9600236B (en) | 2004-06-30 |
Family
ID=20431879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SI9600236A SI9600236B (en) | 1996-07-24 | 1996-07-24 | Procedure and device for returning the waste into dome furnace |
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 EP EP19970930974 patent/EP0914296A1/en not_active Ceased
- 1997-07-18 WO PCT/SI1997/000023 patent/WO1998003438A1/en not_active Application Discontinuation
- 1997-07-18 SK SK92-99A patent/SK9299A3/en unknown
- 1997-07-18 CZ CZ99180A patent/CZ18099A3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0914296A1 (en) | 1999-05-12 |
| HRP970335B1 (en) | 2000-10-31 |
| SK9299A3 (en) | 1999-06-11 |
| CZ18099A3 (en) | 1999-08-11 |
| HRP970335A2 (en) | 1998-08-31 |
| SI9600236B (en) | 2004-06-30 |
| WO1998003438A1 (en) | 1998-01-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| IF | Valid on the event date | ||
| KO00 | Lapse of patent |
Effective date: 20070301 |