EP2339278B1 - Utilisation d'un dispositif d'enrichissement de cuivre ou de nickel - Google Patents

Utilisation d'un dispositif d'enrichissement de cuivre ou de nickel Download PDF

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Publication number
EP2339278B1
EP2339278B1 EP09015674.6A EP09015674A EP2339278B1 EP 2339278 B1 EP2339278 B1 EP 2339278B1 EP 09015674 A EP09015674 A EP 09015674A EP 2339278 B1 EP2339278 B1 EP 2339278B1
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EP
European Patent Office
Prior art keywords
vertical
boiler section
section
temperature
vertical boiler
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.)
Not-in-force
Application number
EP09015674.6A
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German (de)
English (en)
Other versions
EP2339278A1 (fr
Inventor
Hans-Jürgen Dr.-Ing. Schrag
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.)
Oschatz GmbH
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Oschatz 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
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Priority to EP09015674.6A priority Critical patent/EP2339278B1/fr
Publication of EP2339278A1 publication Critical patent/EP2339278A1/fr
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Publication of EP2339278B1 publication Critical patent/EP2339278B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B15/00—Obtaining copper
    • C22B15/0026—Pyrometallurgy
    • C22B15/0028—Smelting or converting
    • C22B15/0047—Smelting or converting flash smelting or converting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B23/00—Obtaining nickel or cobalt
    • C22B23/02—Obtaining nickel or cobalt by dry processes
    • C22B23/025—Obtaining nickel or cobalt by dry processes with formation of a matte or by matte refining or converting into nickel or cobalt, e.g. by the Oxford process
    • 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
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/26—Arrangements of heat-exchange apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat

Definitions

  • the invention relates to a use of a device for obtaining or enrichment of copper or nickel, with a Schwebetationzofen and connected to the Schwebeschmelzofen waste heat boiler for the removal and cooling of exhaust gases from the Schwebeschmelzofen.
  • Such devices are basically known from practice. Relatively revealed US Pat. No. 4,475,947 such a Schwebefmelzofen for the production of copper.
  • the levitation melting furnace is used for levitation melting of copper concentrates or nickel concentrates.
  • Such a levitation melting furnace generally has a reaction shaft, a riser shaft and a hearth connecting the reaction shaft to the riser shaft.
  • a copper-containing or nickel-containing melt is added.
  • a horizontally arranged waste heat boiler is connected to the vertical riser shaft of the Schweehmmelzofens.
  • the exhaust gas or process gas from the Schwebefmelzofen thus first flows through the riser vertically upwards, is then deflected by 90 ° and then flows through the horizontally oriented waste heat boiler.
  • This horizontal waste heat boiler has on its walls by a cooling medium flow throughderohe to cool the exhaust gas.
  • the first part of the horizontal waste heat boiler consists of a chamber in which the cooling or the heat transfer takes place essentially by radiation (radiation part of the waste heat boiler). In this part of the radiation, the exhaust gas is cooled to a temperature of about 650 ° C to 750 ° C.
  • the waste heat boiler has downstream of this chamber to a second chamber in which the cooling or the heat transfer by convection takes place (convection part of the waste heat boiler).
  • the exhaust gas After flowing through this convection part, the exhaust gas has a temperature of about 350 ° C.
  • This known device has the disadvantage that it easily in the horizontal heat recovery boiler to unwanted deposits from the Exhaust gas in the transition riser / waste heat boiler on the cooling surfaces comes. However, such deposits significantly impair the heat transfer at the cooling surfaces.
  • the cooling surfaces in the lower region of the first horizontal chamber (radiation part) are hardly affected by the exhaust gas and therefore these cooling surfaces have only a small proportion of the cooling of the exhaust gas.
  • this waste heat boiler of the known device so only a relatively poor utilization of the cooling surfaces takes place. For better flow and utilization of the cooling surfaces already a flow obstacle in the form of a partition wall was installed in such waste heat boiler. These measures are relatively expensive. As a result, effective cooling of the exhaust gas is possible only with relatively large cooling surfaces in the known device. However, these cause disadvantageously high material and manufacturing costs.
  • the invention is based on the technical problem of effectively avoiding or minimizing the disadvantages explained above.
  • the invention teaches a use of a device for the recovery or enrichment of copper or nickel, with a Schwebetationzofen and connected to the Schweehmmelz furnace waste heat boiler for the removal and cooling of exhaust gases or process gases from the Schwebefmelzofen,
  • the levitation melting furnace comprises a reaction shaft, a vertical riser and a hearth connecting the reaction shaft with the riser for receiving a copper-containing or nickel-containing melt
  • the waste heat boiler has a first vertically oriented or substantially vertically oriented boiler section connected to the riser.
  • This boiler section becomes hereinafter also referred to briefly as the first vertical boiler section, the first vertical boiler section 6 being designed with the proviso that the exhaust gas or process gas is cooled to a temperature of 800 to 1000 ° C, wherein a second vertical boiler section 10 to the first vertical boiler section 6 is connected and wherein the second vertical boiler section 10 is vertically flowed through by the exhaust gas, wherein the second vertical boiler section 10 is designed with the proviso that the exhaust gas is cooled therein to a temperature of 620 to 780 ° C.
  • reaction shaft and riser shaft are oriented vertically and the hearth forms a horizontal connection of reaction shaft and riser shaft.
  • copper concentrate or nickel concentrate is introduced into the reaction shaft and reacted with oxygen. Impurities such as sulfur and the like are separated in intermediates.
  • the copper-containing or nickel-containing melt is absorbed. The exhaust gases or process gases from this process are extracted via the vertical riser shaft.
  • a (first) vertically arranged boiler section of the waste heat boiler is connected to the vertical riser shaft.
  • the hot exhaust gas or process gas rises vertically in the vertical riser shaft and then continues vertically upwards in the (first) vertically arranged boiler section.
  • the first vertically oriented boiler section forms, as it were, the vertical extension of the vertical riser shaft.
  • the first vertical boiler section is designed with the proviso that the exhaust gas to a temperature of 800 ° C to 1000 ° C, preferably to a Temperature of 850 ° C to 950 ° C is cooled.
  • the exhaust gas in the first vertical boiler section in particular to a temperature of about 900 ° C can be cooled.
  • the temperatures indicated above are the temperature of the exhaust gas in the upper region of the first vertical boiler section, in particular before or in the region of a preferably provided and subsequently explained diversion or horizontal deflection of the exhaust gas. It is within the scope of the invention that the cooling of the exhaust gas or the heat transfer in the first vertical boiler section takes place at least substantially by thermal radiation. In that regard, the first vertical boiler section expediently forms the first radiation part of the waste heat boiler.
  • the cooling of the exhaust gas in the first vertical boiler section is recommended carried out by means of a cooling medium flowed through the cooling tubes on the inner walls of the boiler section.
  • the cooling tubes form the walls or inner walls of the first vertical boiler section.
  • boiling water is preferably used as the cooling medium.
  • a second vertical boiler section is connected to the first vertical boiler section, wherein the second vertical boiler section is flowed through by the exhaust gas vertically downwards.
  • the second vertical boiler section also means that this second boiler section is oriented or arranged substantially vertically.
  • the cooling of the exhaust gas takes place in the second vertical boiler section by means of cooling medium through which a cooling medium flows, which form the wall of the second vertical boiler section.
  • the second vertical boiler section has a rectangular, in particular a square inner cross-section.
  • the second vertical boiler section is designed according to the invention with the proviso that the exhaust gas therein to a temperature of 620 to 780 ° C, preferably to a temperature of 500 to 800 ° C and preferably to a temperature of 650 to 750 ° C is cooled.
  • This is the temperature of the exhaust gas in the lower region of the second vertical boiler section, in particular in front of or in the region of a preferably provided and subsequently explained diversion of the exhaust gas.
  • the cooling of the exhaust gas or the heat transfer takes place in the second vertical boiler section expediently at least substantially via radiation.
  • the second vertical boiler section then forms, as it were, the second radiation part of the waste heat boiler according to the invention.
  • the hot exhaust gas or process gas passing from the riser shaft into the first vertically oriented boiler section has a temperature of 1100 ° C. to 1500 ° C., in particular a temperature of 1200 ° C. to 1400 ° C.
  • this hot exhaust gas is cooled.
  • cooling tubes through which a cooling medium flows are arranged on the inner walls of the waste heat boiler, or that the inner walls of the waste heat boiler are formed by cooling tubes through which a cooling medium flows.
  • the cooling medium is preferably boiling water.
  • the boiling water has expediently a temperature higher 200 ° C.
  • the first vertical boiler section has a height of 30 to 50m, preferably a height of 35 to 45m and more preferably a height of about 40m. Height means the vertical extent of the boiler section in the longitudinal direction.
  • An embodiment of the invention has proven particularly is characterized in that the first vertical boiler section a Internal cross-sectional area of 8 to 16m 2, preferably from 10 to 14m 2, and preferably from 11 to 13m. 2
  • the vertical boiler section has, for example, an internal cross-sectional area of 12 m 2 or about 12 m 2 .
  • Internal cross-sectional area means, moreover, the cross-sectional area formed by the inner walls of the boiler section.
  • the above-specified internal cross-sectional areas have proven particularly effective in terms of effective cooling of the exhaust gas.
  • the inner cross section of the first vertical boiler section is rectangular.
  • a plurality of injection nozzles for injecting an oxygen-containing gas into the interior of the first boiler section is provided in the lower region of the first vertical boiler section.
  • the injection nozzles are arranged in the boiler wall and preferably in opposite areas of the boiler wall.
  • the injected oxygen-containing gas is in particular air.
  • the oxygen-containing gas or the air is used as a post-combustion gas to promote the oxidation reactions.
  • the invention is based here on the finding that due to the inventive design of the device or the waste heat boiler optimum mixing and optimal afterburning takes place.
  • the exhaust gas or process gas flows vertically upwards in the vertical riser shaft of the levitation melting furnace and then vertically upward through the first vertical boiler section.
  • an interchangeable vertical intermediate piece is interposed between the vertical riser shaft of the floating melting furnace and the first vertical boiler section.
  • Vertical intermediate piece here means a transition part between the vertical riser and the first vertical boiler section, which is flowed through by the exhaust gas (also) vertically upwards.
  • the vertical intermediate piece is designed with the proviso that the spatter at least substantially act on the inner walls or cooling surfaces of the vertical intermediate piece.
  • the invention continues to be based on the finding that such a vertical intermediate piece is easier to replace than the first vertical boiler portion acted upon by melt injectors.
  • the vertical spacer has a height of 1.5 to 8m, preferably from 2 to 7.5 m, and preferably a height of 2 to 6 m. Height refers to the vertical extent of the vertical intermediate piece in the installed state. It is within the scope of the invention that the vertical intermediate piece is cooled by a separate cooling circuit. This cooling circuit is expediently interchangeable independently of the cooling circuit of the first vertical Kesselab-section and thus independently of the first vertical boiler section.
  • the vertical spacer has a rectangular inner cross-section.
  • the first vertical boiler section is connected to the second vertical boiler section via a horizontal deflection section of the waste heat boiler.
  • Horizontal deflection section here means that the exhaust gas flows through at least a portion of this deflection section horizontally or substantially horizontally. That in the first In the region of the deflection, the cooled exhaust gas of the vertical boiler section preferably has a temperature of 800 to 1000 ° C. and preferably a temperature of 850 to 950 ° C.
  • a preferred embodiment of the invention is characterized in that in the lower region of the second vertical boiler section a horizontal boiler section is connected to the second vertical boiler section and that the exhaust gas is deflected from the second vertical boiler section into the horizontal boiler section.
  • Horizontal boiler section means in particular also that the boiler section can be arranged substantially horizontally.
  • the exhaust gas to be cooled thus flows vertically downwards in the second vertical boiler section and is then deflected by 90 ° or by approximately 90 ° into the horizontal boiler section.
  • the exhaust gas expediently has a temperature of 620 to 780 ° C, preferably a temperature of 640 to 760 ° C and preferably a temperature of 650 to 750 ° C.
  • the exhaust gas in the horizontal boiler section is further cooled.
  • the cooling of the exhaust gas is realized by means of cooling medium through which cooling medium flows. These cooling pipes form the wall of the horizontal boiler section.
  • the cooling of the exhaust gas or the heat transfer in the horizontal boiler section is at least substantially by convection. Therefore, it is the horizontal boiler section as it were the convection part of the waste heat boiler according to the invention.
  • the horizontal boiler section is designed with the proviso that a cooling of the exhaust gas to a temperature of 200 to 500 ° C, preferably to a temperature of 250 to 450 ° C and preferably to a temperature of 300 to 400 ° C. takes place.
  • the exhaust gas is cooled in particular to a temperature of 350 ° C or to a temperature of about 350 ° C.
  • the invention is based on the finding that with the inventive use of the device and in particular with the waste heat boiler according to the invention disadvantageous deposits from the exhaust gas on the cooling surfaces can be largely avoided or minimized.
  • disadvantageous deposits from the exhaust gas on the cooling surfaces can be largely avoided or minimized.
  • the invention is in particular also based on the finding that the deflection of the exhaust gas provided in a preferred embodiment is only effected at a substantially lower temperature (for example 900 ° C.) than in the known devices and thus the risk of deposits is avoided or can be minimized.
  • the cooling surfaces in the waste heat boiler in particular the cooling surfaces in the first vertical boiler section can be dimensioned smaller with the same temperature reduction.
  • the invention allows over the known devices, a saving of cooling surfaces and, accordingly, a saving of material and manufacturing costs. This also means a reduction in the plant operating costs, since current consumers such as pumps can be sized smaller.
  • the device according to the invention can also be realized with a lower construction volume with the same efficiency compared to the known devices. It should be emphasized in particular that the advantages explained above are achieved in particular with devices that with a Schwebefmelzofen work to recover or for the enrichment of copper or nickel.
  • the figures show a device for enrichment of copper or nickel with a Schwebetationzofen 1 and connected to the Schwebeschmelzofen 1 waste heat boiler 2 for the removal and cooling of exhaust gases from the Schwebefmelzofen 1.
  • the Schwebefmelzofen 1 comprises in a conventional manner a vertically oriented reaction shaft 3, a vertically oriented riser 4 and the reaction shaft 3 with the riser 4 connecting hearth 5 on.
  • Copper concentrate or nickel concentrate is introduced into the reaction shaft 3, and the concentrate falling or floating in the reaction shaft is reacted with oxygen. By-products such as sulfur are separated. In the received in the hearth 5 melt copper or nickel is enriched. The resulting in this process exhaust gases and process gases escape via the vertical riser 4 in the waste heat boiler 2 and are cooled there.
  • the wall of the waste heat boiler not shown in detail by a cooling medium flowed through cooling tubes. As a cooling medium boiling water is expediently used.
  • the waste heat boiler 2 has a first vertically oriented boiler section 6 connected to the vertical riser shaft 4.
  • This first vertically oriented boiler section 6 forms as it were a vertical extension of the vertical riser 4.
  • the hot exhaust gas or process gas flows vertically upwards in the vertical riser 4 and enters the first vertically oriented boiler section at a temperature of up to about 1400 ° C 6 on.
  • the exhaust gas is cooled in particular to a temperature of about 900 ° C. It is the temperature of the exhaust gas in the upper region 7 before or in the region of the deflection of the exhaust gas in the horizontal deflection section 8.
  • the height h of the first vertical boiler section 6 may be 40m in the embodiment.
  • the inner cross-sectional area of this first vertical boiler section 6 is approximately 12 m 2 in the exemplary embodiment. This inner cross section of the first vertical boiler section 6 is square in the exemplary embodiment.
  • an interchangeable vertical intermediate piece 9 is interposed between the vertical riser 4 of the floating furnace 1 and the first vertical boiler section 6 of the waste heat boiler 2.
  • This intermediate piece 9 may in the embodiment have a vertical height z of 3 to 5m.
  • the interchangeable vertical intermediate piece 9 is cooled in a manner not shown by a cooling circuit, which is independent of the cooling circuit or of the cooling circuits of the waste heat boiler 2 and the first vertical boiler section 6. For this reason, the vertical intermediate piece 9 is independently or separately exchangeable from the first vertical boiler section 6.
  • the vertical spacer 9 has a square cross-section.
  • the exhaust gas rises vertically in the first vertical boiler section 6 and is then deflected via the horizontal deflection section 8 into the second vertical boiler section 10.
  • the exhaust gas flows following the horizontal deflection section 8 via an obliquely arranged boiler section 11 in the second vertical boiler section 10.
  • the exhaust gas flows vertically downwards and is in particular to a temperature of about 650 ° C. cooled to 750 ° C. This is the temperature of the exhaust gas before or in the region of the deflection in the horizontal boiler section 12.
  • the exhaust gas is then cooled to a temperature of about 350 ° C.
  • the first vertical boiler section 6 is therefore also referred to as the first radiation part and the second vertical boiler section 10 as the second radiation part of the waste heat boiler 2.
  • the cooling of the exhaust gas or the heat transfer takes place at least substantially by convection.
  • This horizontal boiler section 12 is therefore also referred to as the convection part of the waste heat boiler 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Claims (12)

  1. Utilisation d'un dispositif avec un four (1) de fusion fluidisée avec une chaudière à récupération (2) raccordée sur le four (1) de fusion fluidisée pour évacuer et refroidir des gaz perdus hors du four (1) de fusion fluidisée pour extraire ou pour enrichir du cuivre ou du nickel,
    le four (1) de fusion fluidisée comportant une cuve de réaction (3), une cuve montante (4) verticale et un creuset (5) reliant la cuve de réaction (3) avec la cuve montante (4), destiné à recevoir une masse fondue contenant du cuivre ou du nickel,
    la chaudière à récupération (2) comportant une première partie (6) de chaudière orientée à la verticale ou orientée sensiblement à la verticale, raccordée sur la cuve montante (4),
    la première partie (6) verticale de chaudière étant conçue avec le critère que les gaz perdus ou les gaz de processus soient refroidis à une température de 800 à 1000 °C,
    une deuxième partie (10) verticale de chaudière étant raccordée sur la première partie (6) verticale de chaudière et la deuxième partie (10) verticale de chaudière étant traversée à la verticale vers le bas par les gaz perdus.
  2. Utilisation d'un dispositif selon la revendication 1, la première partie (6) verticale de chaudière présentant une hauteur h de 30 à 50 m, de préférence de 35 à 45 m.
  3. Utilisation d'un dispositif selon l'une quelconque des revendications 1 ou 2, la première partie (6) verticale de chaudière présentant une surface de section transversale intérieure de 8 à 16 m2, de préférence de 10 à 14 m2, de manière préférée de 11 à 13 m2.
  4. Utilisation d'un dispositif selon l'une quelconque des revendications 1 à 3, la section transversale interne de la première partie (6) verticale de chaudière étant conçue sous forme rectangulaire.
  5. Utilisation d'un dispositif selon l'une quelconque des revendications 1 à 4, dans la zone inférieure de la première partie (6) verticale de chaudière étant prévue une pluralité de buses d'insufflation pour insuffler un gaz oxygéné dans l'espace intérieur de la partie (6) de chaudière.
  6. Utilisation d'un dispositif selon l'une quelconque des revendications 1 à 5, entre la cuve montante (4) du four (1) de fusion fluidisée et la première partie (6) verticale de chaudière étant intercalée une pièce intermédiaire (9) verticale interchangeable.
  7. Utilisation d'un dispositif selon la revendication 6, la pièce intermédiaire (9) verticale présentant une hauteur de 1,5 à 8 m, de préférence une hauteur de 2 à 7,5 m et de manière préférée, une hauteur de 2 à 6 m.
  8. Utilisation d'un dispositif selon l'une quelconque des revendications 6 ou 7, la pièce intermédiaire (9) verticale étant refroidie par un circuit de refroidissement indépendant du refroidissement de la première partie (6) verticale de chaudière.
  9. Utilisation d'un dispositif selon l'une quelconque des revendications 1 à 10, la deuxième partie (10) de chaudière étant conçue avec le critère que les gaz perdus puissent y être refroidis à une température de 640 à 760 °C.
  10. Utilisation d'un dispositif selon l'une quelconque des revendications 1 à 9, la première partie (6) verticale de chaudière étant raccordée par l'intermédiaire d'une partie de renvoi (8) sur la deuxième partie (10) verticale de chaudière.
  11. Utilisation d'un dispositif selon l'une quelconque des revendications 1 à 10, dans la zone inférieure de la deuxième partie (10) verticale de chaudière, une partie (12) horizontale de chaudière étant raccordée sur la deuxième partie (10) verticale de chaudière et les gaz perdus étant renvoyés de la deuxième partie (10) verticale de chaudière dans la partie (12) horizontale de chaudière.
  12. Utilisation d'un dispositif selon la revendication 11, la partie (12) horizontale de chaudière étant conçue avec le critère qu'un refroidissement des gaz perdus à une température de 200 à 500 °C, de préférence à une température de 250 à 450 °C et de manière préférée à une température de 300 à 400 °C ait lieu.
EP09015674.6A 2009-12-18 2009-12-18 Utilisation d'un dispositif d'enrichissement de cuivre ou de nickel Not-in-force EP2339278B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09015674.6A EP2339278B1 (fr) 2009-12-18 2009-12-18 Utilisation d'un dispositif d'enrichissement de cuivre ou de nickel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09015674.6A EP2339278B1 (fr) 2009-12-18 2009-12-18 Utilisation d'un dispositif d'enrichissement de cuivre ou de nickel

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EP2339278A1 EP2339278A1 (fr) 2011-06-29
EP2339278B1 true EP2339278B1 (fr) 2017-02-15

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Publication number Priority date Publication date Assignee Title
EP3904764B1 (fr) * 2020-04-29 2023-11-15 Christof Global Impact Limited Système de chaudière destiné au traitement des gaz d'échappement

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FI65632C (fi) * 1982-10-13 1985-11-19 Outokumpu Oy Metod foer att aotervinna vaerme av dammhaltiga gaser alstradevid suspensionssmaeltning av sulfidiska koncentrat och an orning foer denna
FI74738C (fi) * 1986-05-09 1988-03-10 Outokumpu Oy Foerfarande och anordning foer att minska stoftagglomerater vid behandling av gaser av smaeltningsugnen.
JPH108156A (ja) * 1996-06-18 1998-01-13 Nikko Kinzoku Kk 銅製錬用自溶炉、製銅装置及び廃熱回収方法
JP5157061B2 (ja) * 2005-11-18 2013-03-06 三菱マテリアル株式会社 アップテーク及び金属精錬炉
EP1818610A1 (fr) * 2006-01-31 2007-08-15 Oschatz Gmbh Chaudière de récupération avec des parois de déflection
FI120158B (fi) * 2007-12-17 2009-07-15 Outotec Oyj Menetelmä ja laitteisto suspensiosulatusuunin poistokaasujen käsittelemiseksi

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