EP0204652B1 - Four à cuve pour la fusion de métaux - Google Patents

Four à cuve pour la fusion de métaux Download PDF

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Publication number
EP0204652B1
EP0204652B1 EP86730066A EP86730066A EP0204652B1 EP 0204652 B1 EP0204652 B1 EP 0204652B1 EP 86730066 A EP86730066 A EP 86730066A EP 86730066 A EP86730066 A EP 86730066A EP 0204652 B1 EP0204652 B1 EP 0204652B1
Authority
EP
European Patent Office
Prior art keywords
smelting
melting
shaft
ramp
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP86730066A
Other languages
German (de)
English (en)
Other versions
EP0204652A1 (fr
Inventor
Günther Schmidt
W.M. Koch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Strikfeld W and Koch GmbH
Original Assignee
Strikfeld W and Koch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6268915&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0204652(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Strikfeld W and Koch GmbH filed Critical Strikfeld W and Koch GmbH
Priority to AT86730066T priority Critical patent/ATE48693T1/de
Publication of EP0204652A1 publication Critical patent/EP0204652A1/fr
Application granted granted Critical
Publication of EP0204652B1 publication Critical patent/EP0204652B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/02—Shaft or like vertical or substantially vertical furnaces with two or more shafts or chambers, e.g. multi-storey
    • F27B1/04—Combinations or arrangements of shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/02—Shaft or like vertical or substantially vertical furnaces with two or more shafts or chambers, e.g. multi-storey

Definitions

  • the invention relates to a shaft melting furnace for melting metals, in particular non-ferrous metals, after the introduction of the main claim.
  • Shaft melting furnaces are known (US Pat. No. 2,991,060), in which an essentially vertically arranged feed shaft leads directly into a trough-shaped interior that holds the melting bath.
  • a burner is arranged opposite the feed shaft, the heat of the burner being conducted through the interior of the furnace in such a way that it becomes effective particularly at the lower end of the feed shaft and melts the metal present there, so that it melts into the molten bath present in the interior flows.
  • DE-A 252 457 describes a cupola furnace with a 01 or gas firing nozzle which can be adjusted in different directions, in the shaft of which three prismatic bodies are installed at the lower end above the cooker, which are offset one above the other and on the one hand have sliding surfaces for the melting material and on the other hand baffle and guide surfaces for form the stinging flames.
  • the melting material slides or flows through an intermediate space formed by two prismatic bodies into the melting bath, whereby it cannot be ruled out that impurities or particles adhering to the melting material that are difficult to melt get into the melt and alloy or falsify it.
  • the present invention is therefore based on the object of creating a shaft melting furnace which has defined and constant (safe) operating conditions and can therefore be incorporated into an automatically guided melting operation and which works more economically on account of better energy utilization, the melting bath being to be free of impurities .
  • the funnel-shaped feed chute merges into a melting cross section, which is followed by a first section of a horizontal or slightly inclined melting ramp and the burner device is directed to the area of the transition between the melting section and the first section of the melting ramp, defined and constant Melting and operating conditions are provided, so that no manual operation is necessary during the desired melting operation, since the shaft melting furnace can be equipped with an automatic loading device and thus can be integrated into a fully automatic melting process and continuous melting operation is possible.
  • the arrangement according to the invention results in high energy savings.
  • the funnel-shaped feed chute shape causes chunks of melt material to slide better, whereby the melt material is strongly preheated by the hot exhaust gases flowing upwards and slides down into the melting chamber.
  • the speed of the upward-flowing exhaust gases which have relatively defined flow conditions in the melting chamber, is reduced not only as a result of the heat exchange to the melting material coming down, but also as a result of the funnel-shaped design of the charging shaft and the resulting increase in cross-section of the shaft, so that the exhaust gases last longer stay in the shaft and there is better heat utilization, which ensures consistently low exhaust gas temperatures during the entire melting process.
  • the reduction in speed contributes to the fact that dust particles adhering to the melting material are not taken into the upper shaft part and ejected, but are burned in the lower region.
  • the melted material constantly slides into the active chamber and closes it until the melted material has completely melted.
  • the melting ramp adjoining the active space which is designed as a "dry bridge”
  • the melt material cannot fall into the melt bath, but is completely melted off in the active space with the subsequent melting ramp, via which the melt material as a liquid melt the melt pool flows.
  • adhering particles, emulsions and the like also burn before they can get into the molten bath and can lead to contamination of the melt.
  • parts containing metals with a higher melting point for example iron-containing aluminum parts
  • parts containing metals with a higher melting point for example iron-containing aluminum parts
  • the size of the melting chamber i.e. its height and its cross-sectional area is determined according to the burner flame of the selected burner device, taking into account the required burner output, i.e. Melting capacity of the shaft melting furnace set. In this way, the efficiency of the plant is maximized, i.e. that no melting material remains unmelted in the working space or at the transition area of the working space to the melting ramp during melting, so that the melting material can continuously slide out of the loading shaft.
  • the invention is shown in the drawing and is explained in more detail in the description below.
  • the figure shows: a section through the shaft melting furnace according to the invention with an exhaust hood.
  • the shaft melting furnace 1 has a loading shaft 2 which is funnel-shaped. Adjoining the feed chute 2 is a melting-active space 3, which has a constant cross-section and is slightly inclined to the vertical. A melting ramp 4 adjoins the effective space 3, which preferably has a slight inclination e.g. of 8 degrees to the horizontal. Arranged underneath the melting ramp 4 is an interior of the furnace designed as a warming space 5, which receives the melting bath. In the area of the effective space 3 and the melting ramp 4, a burner device 6 arranged as an oil or gas burner is arranged, which is directed towards the transition area between the effective space and the melting ramp 4, so that the lower end of the effective space 3 lies fully in the effective range of the burner device 6. In the vicinity of the melting ramp 4, a cleaning opening 7a, b is provided, through which the impurities or the like lying on the melting ramp 4 can be removed. A holding burner 8 directed towards the molten bath is arranged in the side walls of the holding space 5.
  • the warming room 5 is provided below the melting ramp 4.
  • this warming room can also be arranged in front of or to the side of the melting ramp, depending on the design of the melting shaft furnace.
  • the arrangement of the burner device 6 and the effective space 3 can also be changed in accordance with the design conditions of the shaft melting furnace, i.e. depending on the operating conditions, the effective space can continue directly vertically under the funnel-shaped loading shaft 2.
  • the burner device 6 can be arranged approximately at the height of the effective space 3 at different locations in the circumference of the furnace.
  • An exhaust hood 9 which is provided with a sliding door 10, adjoins the funnel-shaped loading shaft 2.
  • a temperature measuring point 11 is provided above the exhaust hood 9.
  • a shaft cover 13 which can be driven by a motor 12 and which is pivoted depending on the desired operating states.
  • the feed chute 2 When the feed chute 2 is loaded with melt material, it slides into the melting chamber 3, its packing density being very high.
  • the burner 6, which is possibly directed via deflections onto the transition region between the effective space 3 and the melting ramp 4, melts the melting material which flows down the melting ramp and flows into the interior 5.
  • the hot exhaust gases of the burner 6 rise in the effective space and also melt the melting material. Since the size of the effective space 3 is adapted in accordance with the burner flame of the burner device, taking into account the required melting or burner output, the lower part of the effective space is melted free, so that the melt material present in the funnel-shaped loading shaft 2 can slide on, the effective space being closed for so long, until the melting material has completely melted.
  • the inclined surfaces of the funnel-shaped loading chute 3 promote slipping.
  • the exhaust gases continue to flow upward and at least melt the melted material and then, after they have given off their heat, leave the feed chute 2 at the upper end and reach the exhaust gas hood 9.
  • the exhaust gas temperature is monitored at the temperature measuring point 11 during the melting operation.
  • the exhaust gas temperature rises, which indicates that the loading shaft 2 is free for a further loading process.
  • the do not represent provided loading device consists of a loading container and a lifting device.
  • the sliding door 10 is opened by a motor 14, and the loading container starts up and at the same time passes an electromechanical control point which indicates the opened sliding door 10.
  • a cycle feed is initiated at the same time via a switch, ie the filled container moves to the end position with the pauses and running times set. After the container is emptied, it moves back and down by means of the lifting device and the sliding door 10 closes automatically.
  • the melting burner is switched off via a preselected and set maximum exhaust gas temperature and after a time set on a timer, and an optical or acoustic signal is provided which indicates the need for recharging.
  • the melting space and the holding space are arranged one above the other.
  • the melting space and the holding space lie side by side, the two spaces being separated by a wall and the transition is only a small opening for the passage of the molten metal in the holding space:
  • the drawing shows a shaft melting furnace with a rectangular version of the furnace jacket, of course other shapes, for example round or oval furnace jacket versions, can also be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Claims (8)

1. Four de fusion vertical pour la fusion de métaux comprenant un compartiment recevant le bain de fusion pour le maintien de sa température, un puits de chargement (2) en forme de trémie servant à l'introduction des matières à fondre, un compartiment (3) de fusion actif s'y raccordant ainsi qu'un dispositif de brûleur (6), injectant les matières à fondre, de manière que le compartiment (3) présente une section constante et se raccorde à une première section d'une rampe (4) de fusion horizontale ou légèrement inclinée, tandis que le dispositif de brûleur (6) est dirigé sur la zone de transition entre le compartiment (3) et la première section de la rampe de fusion (4), de sorte que les matières à fondre circulent sur toute la rampe de fusion (4), les corps étrangers demeurant sur cette rampe de fusion (4) pour être séparés des matières à fondre.
2. Four de fusion vertical selon les revendications 1 ou 2, caractérisé par le fait qu'une porte de nettoyage (7) est prévue dans la région de la rampe de fusion (4) pour l'enlèvement des résidus.
3. Four de fusion vertical selon les revendications 1 ou 2, caractérisé par te fait que le compartiment de fusion (3) est incliné par rapport à la verticale.
4. Four de fusion vertical selon l'une quelconque des revendications 1 à 3, caractérisé par le fait qu'un point de mesure est prévu au-dessus du puits de chargement (2) pour la détection de la température des gaz brûlés.
5. Four de fusion vertical selon la revendication 4, caractérisé par le fait qu'on prévoit un dispositif de chargement automatique commandé en fonction de la température des gaz brûlés.
6. Four de fusion vertical selon l'une quelconque des revendications 1 à 5, caractérisé par le fait que le compartiment de fusion (3), avec la rampe de fusion (4) et le compartiment de maintien à la température, sont superposés.
7. Four de fusion vertical selon l'une quelconque des revendications 1 à 6, caractérisé par le fait que le compartiment de fusion (3), avec la rampe de fusion (4) et le compartiment (5) de maintien à la température, sont disposés côte à côte, la rampe étant séparée par une cloison avec ouverture pour le passage du métal fondu.
8. Four de fusion vertical selon l'une quelconque des revendications 1 à 7, caractérisé par le fait que la capacité du compartiment de fusion (3) est adapté à la capacité de fusion nécessaire, compte tenu du dispositif de brûleur (6) utilisé.
EP86730066A 1985-04-19 1986-04-15 Four à cuve pour la fusion de métaux Expired EP0204652B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86730066T ATE48693T1 (de) 1985-04-19 1986-04-15 Schachtschmelzofen zum schmelzen von metallen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3514681 1985-04-19
DE3514681 1985-04-19

Publications (2)

Publication Number Publication Date
EP0204652A1 EP0204652A1 (fr) 1986-12-10
EP0204652B1 true EP0204652B1 (fr) 1989-12-13

Family

ID=6268915

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86730066A Expired EP0204652B1 (fr) 1985-04-19 1986-04-15 Four à cuve pour la fusion de métaux

Country Status (6)

Country Link
US (1) US4687438A (fr)
EP (1) EP0204652B1 (fr)
AT (1) ATE48693T1 (fr)
CA (1) CA1280593C (fr)
DE (1) DE3667533D1 (fr)
ES (1) ES8704620A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10325153A1 (de) * 2003-05-30 2004-12-30 Strikowestofen Gmbh Vorrichtung zum Schmelzen und Warmhalten von Metallen

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8527603U1 (de) * 1985-09-27 1985-12-12 Bleiwenz GmbH, 6920 Sinsheim Schmelz- und Warmhalteofen
US5236352A (en) * 1992-10-08 1993-08-17 Carpenter Roland K Apparatus and methods for processing scrap tires
CA2086879A1 (fr) * 1993-01-07 1994-07-08 Henry Meyer Procede et dispositif pour injecter une quantite mesuree de metal en fusion
CN121285642A (zh) * 2023-06-09 2026-01-06 申克碳化技术股份有限公司 燃烧器管、燃烧器、熔化炉、用于生产燃烧器管的方法、用于熔化待熔化材料的方法和陶瓷材料的用途

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1143745A (fr) * 1900-01-01
US1092938A (en) * 1912-10-10 1914-04-14 United Aluminum Ingot Company Melting-furnace.
GB252457A (en) * 1925-02-27 1926-05-27 David Mackintosh Shaw Improvements relating to artificial teeth
US1638812A (en) * 1926-08-05 1927-08-09 Maehler Drying and enameling oven
US1796871A (en) * 1928-03-03 1931-03-17 Gathmys Res Corp Method of reduction and reducing furnaces
US2161181A (en) * 1936-11-12 1939-06-06 Marx Peter Melting furnace
US2436124A (en) * 1946-08-29 1948-02-17 John H Ehardt Reverberatory furnace
US2527144A (en) * 1949-09-21 1950-10-24 Chicago Vitreous Enamel Produc Smelter and method of smelting frit
US2991060A (en) * 1958-04-16 1961-07-04 Sklenar Wenzeslaw Frank Reverberatory furnace
US3129932A (en) * 1961-05-05 1964-04-21 Lafarge Ciments Sa Means for continuously treating divided materials
DE1176682B (de) * 1962-03-15 1964-08-27 Beteiligungs & Patentverw Gmbh Schmelzofen, insbesondere zur Stahlerzeugung aus Schrott und Kohlungsmitteln
US3317310A (en) * 1964-06-05 1967-05-02 Jr Carl George Delaval Method of making cast iron
GB1172863A (en) * 1966-01-27 1969-12-03 Gas Council Improvements in or relating to Melting Furnaces
US3379424A (en) * 1966-07-05 1968-04-23 Modern Equipment Co Scrap metal preheaters
JPS6055755B2 (ja) * 1981-11-05 1985-12-06 宇部興産株式会社 二重傾斜炉

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10325153A1 (de) * 2003-05-30 2004-12-30 Strikowestofen Gmbh Vorrichtung zum Schmelzen und Warmhalten von Metallen

Also Published As

Publication number Publication date
ES8704620A1 (es) 1987-04-01
ATE48693T1 (de) 1989-12-15
CA1280593C (fr) 1991-02-26
ES554161A0 (es) 1987-04-01
EP0204652A1 (fr) 1986-12-10
DE3667533D1 (de) 1990-01-18
US4687438A (en) 1987-08-18

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