EP2210053A1 - Düsenimplantat für kupol- oder schachtöfen - Google Patents
Düsenimplantat für kupol- oder schachtöfenInfo
- Publication number
- EP2210053A1 EP2210053A1 EP08801844A EP08801844A EP2210053A1 EP 2210053 A1 EP2210053 A1 EP 2210053A1 EP 08801844 A EP08801844 A EP 08801844A EP 08801844 A EP08801844 A EP 08801844A EP 2210053 A1 EP2210053 A1 EP 2210053A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cupola
- nozzle
- furnace body
- combustion air
- shaft furnace
- 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.)
- Withdrawn
Links
- 239000007943 implant Substances 0.000 title description 3
- 238000002485 combustion reaction Methods 0.000 claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 239000000155 melt Substances 0.000 claims abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000002557 mineral fiber Substances 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 2
- 239000011707 mineral Substances 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 abstract 1
- 238000002844 melting Methods 0.000 description 27
- 230000008018 melting Effects 0.000 description 27
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 239000000446 fuel Substances 0.000 description 11
- 238000003723 Smelting Methods 0.000 description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 241000282414 Homo sapiens Species 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 239000000571 coke Substances 0.000 description 3
- 238000010744 Boudouard reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000007380 fibre production Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/12—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in shaft furnaces
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/235—Heating the glass
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B11/00—Making pig-iron other than in blast furnaces
- C21B11/02—Making pig-iron other than in blast furnaces in low shaft furnaces or shaft furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/16—Tuyéres
-
- 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
- F27B1/10—Details, accessories or equipment specially adapted for furnaces of these types
- F27B1/16—Arrangements of tuyeres
Definitions
- the present patent application relates to a nozzle implant for a cupola or shaft furnace, in particular for the production of mineral melts in mineral fiber production.
- the coarse-grained starting products such as rocks and aggregates are filled together with a coarse-grained fuel in the formed as a shaft or cupola melting unit.
- a coarse-grained fuel in the formed as a shaft or cupola melting unit.
- the furnace temperature reaches a level at which the introduced coarse-grained rocks and aggregates melt.
- the temperature in the furnace decreases in an upward direction, since the heat energy is released to the raw materials and the fuel serving as the energy carrier.
- the oxygen concentration drops to almost zero.
- the liquid phase formed in the melting zone sinks to the bottom of the melting aggregate.
- segregation phenomena subsequently occur in which the iron reduced from the rock accumulates at the lowest point of the smelting aggregate and the melt required for mineral fiber extraction, due to its lower specific weight, discharges above the bottom via an outlet arranged there leaves.
- the resulting molten iron is discharged via a arranged at the bottom of the melter opening as needed.
- the resulting in the combustion process in the molten zone near the air inlet exhaust gases consist mainly of carbon dioxide, nitrogen dioxide and carbon monoxide.
- these gases, but especially the carbon dioxide react with the carbon of the raw material / fuel column above the melting zone. It comes on the hot surfaces of the carbonaceous fuel to a strong endothermic reduction reaction in which the carbon dioxide reacts with the carbon in a Boudouard reaction to carbon monoxide. Energy is consumed by this undesirable reduction reaction, which adversely affects the heat balance of the melter. The energy losses resulting from such reactions are usually up to 20% of the total energy input.
- the melting zone Due to the penetration-induced penetration depth of the air inlet called primary wind flow, the melting zone is not uniformly distributed over the entire base area. In many cases, only a small penetration depth of the primary wind is observed. This is the case in particular with shaft or cupola furnaces with large shaft diameters.
- the melting capacity of the melting unit is directly dependent on the amount of air introduced as the amount of wind. Frequently, a superstoichiometric amount of wind is supplied at the required maximum melting rate, so that the melting unit is over-blown. Although the output power is increased by the increased amount of wind, this is often associated with a lowering of the melting temperature, which must be adjusted again by a higher fuel addition. This, in turn, is at the expense of melting performance.
- the dead man formed in the middle of the shaft of the smelting unit is usually not reached despite the maximum amount of wind, so that the supply of oxygen in the zone of heavy fuel burns is unnecessarily high. The melting unit is overblown.
- Melting units have an optimum operating point, in which the optimum amount of wind, depending on the area at the nozzle level, ie in the area of the wind supply, ensures maximum throughput with the lowest possible use of fuel and maximum melting temperature.
- the optimum operating point of a smelting unit could be extended to a much wider window if the dead man's zone were to be reached with atmospheric oxygen necessary for combustion.
- German Offenlegungsschrift 1 526 099 discloses that even in furnaces for burning sludge with larger cross sections than the penetration depth of the air, the combustion in the furnace center ceases. To overcome this problem, DE 1 526 099 describes a height-adjustable tube introduced from above in the center of the furnace or laterally introduced nozzle rods at the level of the primary wind nozzle plane.
- WO 03/006389 also describes the problem of "dead man formation.” To solve this problem, WO 03/006389 proposes to allow radially arranged, movable nozzles to protrude deeper into the melting unit center Melting units with relatively small diameters feasible.
- a Kupol- or shaft furnace for producing a melt, in particular for mineral fiber extraction, comprising a furnace body, a primary wind ring with at least one attached blow mold for blowing combustion air into the cupola or shaft furnace, and a means for introduction of combustion air in the formed in the region of the shaft center of the furnace low-reaction zone, which is characterized in that the means for introducing combustion air into the In the region of the shaft center of the furnace formed low-reaction zone is introduced from below into the furnace nozzle lance or arranged in the furnace nozzle beam, which are connected to a wind line.
- the means for introducing combustion air in the formed in the region of the shaft center of the furnace low-reaction zone is connected to the primary wind ring.
- such a device for introducing combustion air consists of a refractory concrete, which has a sufficient thermal, chemical and mechanical stability against the conditions prevailing in the cupola or shaft furnace at the time of melt production process conditions.
- At the nozzle lance at least one outlet nozzle is provided in the region of the upper end of the lance.
- a nozzle is aligned at an angle between 0 ° and 90 ° to the furnace center axis. In this way, a wind guide is made possible, which is able to avoid the greatest possible avoidance of the dead areas in the center of the shaft of the smelting unit.
- the cupola or shaft furnace at least two substantially oppositely arranged blow molds for blowing combustion air into the cupola or shaft furnace, wherein the means for introducing combustion air into the formed in the region of the shaft center of the furnace low-reaction zone a nozzle bar is, which rests on the blow molds.
- the nozzle bar can be connected via the serving as a support blow molds to the primary wind ring and acted upon by wind.
- An inventive nozzle bar has a plurality of nozzles distributed over the nozzle bars.
- the nozzles provided in the nozzle lance or the nozzle beam according to the invention are advantageously formed from a high-temperature-resistant ceramic, preferably based on zinc oxide.
- a water cooling has been shown as a suitable cooling device.
- the nozzle lance or the nozzle beam can be provided in this corresponding coolant lines through which cooling water can be performed.
- the applied wind is advantageously already preheated in the nozzle bar or the nozzle lances and flows as a hot blast in the low-reaction zone of the melting unit.
- the air additionally acted upon by the nozzle lance or the nozzle bar is preheated to a temperature of up to 650 0 C. It has been found that up to 50% of the air fed in via the primary wind nozzles can be acted upon by the nozzle lance or the nozzle beam provided according to the invention.
- Fig. 1 shows an inventively introduced from below into a melting unit nozzle lance or central nozzle.
- FIG. 2 shows a nozzle bar provided according to the invention in a melting unit.
- Fig. 3 shows the situation according to the prior art.
- Fig. 1 shows a cupola 1 with a cupola lid 9 arranged at the bottom, in which a central nozzle 6 is arranged through a pipe opening.
- the cupola 1 has in the region of its wall and its bottom above the Kupolofendeckels 9 a refractory lining 5 or insulating stones.
- the Kupolofendeckel 9 is sealed with respect to the central nozzle 6 with a refractory material, so that neither melt nor liquid iron can escape from the tube breakthrough.
- the central nozzle 6 is made of a special refractory concrete which withstands the thermal, chemical and mechanical stresses during the smelting campaign.
- the central nozzle 6 is equipped with one or more outlet nozzles, which are arranged horizontally, preferably diagonally upwards.
- the plane of the outlet nozzles is located at the level of primary wind nozzles or blow molds 3 or is arranged slightly above this level.
- the primary wind nozzles or blow molds 3 are connected to a primary wind ring 2.
- a vertically upward arrangement of the outlet nozzles is advantageous, but there is a risk that flowing down melt and / or iron flowing down the outlet nozzles added.
- the outlet nozzles are made of high temperature resistant material, eg. Zirconium oxide.
- the central nozzle 6 inserted from below into the cupola lid 9 can be subjected to additional wind separately from the primary wind.
- the additional wind can be enriched with oxygen.
- the outlet nozzles are designed in number and in diameter so that 5 to 50%, preferably 10%, of the primary wind can be added via the central nozzle 6 as an additional wind.
- an expanded zone 7 of strong coke combustion is formed.
- the central nozzle 6 inserted from below falls out together with the remaining furnace filling.
- the central nozzle 6 inserted from below may possibly be used over several melting campaigns.
- Fig. 2 shows an alternative embodiment of a cupola 1 with a nozzle bar 8, which consists of a refractory concrete mass and is supported on two opposite blow molds 3, through which the nozzle bar 8 refers additional air.
- the outlet nozzle having nozzle bar 8 is connected to the existing primary wind ring 2 and thus involved.
- the flow rate can be determined via the selected cross-section and the number of outlet nozzles, which depends on the primary wind volume flow and the resulting pressure resistance of the system.
- the outlet nozzles of the nozzle beam 8 are made of a high temperature resistant ceramic, z. Zirconium oxide.
- the nozzle bar 8 is designed so that the filling of the empty furnace, the component is not destroyed. As with the central nozzle 6 used from below or above, the use of hot blast is advantageous. Further improvement can be achieved by additional oxygenation. Above the nozzle bar 8, a zone 7 strong coke combustion is formed.
- Fig. 3 shows a cupola 1 according to the prior art and therefore without the inventively provided means for introducing combustion air in the formed in the region of the shaft center of the furnace low-reaction zone.
- 3 combustion air is introduced into the cupola 1 only via the ring connected to the primary wind 2 blow molds. This creates zones of heavy fuel conversion 4. Signed nl iste
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007050132A DE102007050132A1 (de) | 2007-10-19 | 2007-10-19 | Düsenimplantat für Kupol- oder Schachtöfen |
| PCT/EP2008/007249 WO2009052894A1 (de) | 2007-10-19 | 2008-09-05 | Düsenimplantat für kupol- oder schachtöfen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2210053A1 true EP2210053A1 (de) | 2010-07-28 |
Family
ID=40019068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08801844A Withdrawn EP2210053A1 (de) | 2007-10-19 | 2008-09-05 | Düsenimplantat für kupol- oder schachtöfen |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2210053A1 (de) |
| DE (1) | DE102007050132A1 (de) |
| WO (1) | WO2009052894A1 (de) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1526099C3 (de) | 1965-05-26 | 1975-08-07 | Peter U. Meilen Zuerich Reusser (Schweiz) | Schachtofen zum gleichzeitigen Verbrennen von Schlamm und brennbaren festen Abfallstoffen |
| DE1758638B1 (de) * | 1968-07-10 | 1970-09-03 | Huettenwerk Oberhausen Ag | Schachtofen |
| DK267186D0 (da) | 1986-06-06 | 1986-06-06 | Rockwool Int | Mineraluldsfremstilling |
| WO1990012761A1 (en) | 1989-04-17 | 1990-11-01 | Rockwool International A/S | Shaft kiln |
| CN1108379A (zh) * | 1994-03-07 | 1995-09-13 | 吴金涌 | 一种低压化铁炉装置 |
| US6813902B2 (en) * | 2000-11-01 | 2004-11-09 | American Air Liquide, Inc. | Systems and methods for increasing production of spheroidal glass particles in vertical glass furnaces |
| EP1414759B1 (de) | 2001-07-12 | 2005-06-08 | Rockwool International A/S | Verfahren zur herstellung einer zu fasern verarbeitbaren schmelze eines mineralmaterials |
| JP2004101178A (ja) * | 2003-10-27 | 2004-04-02 | Tokyo Elex Kk | 溶融炉 |
| FR2873682B1 (fr) * | 2004-07-29 | 2007-02-02 | Saint Gobain Isover Sa | Procede et dispositif de traitement de dechets fibreux en vue de leur recyclage |
| US20100058810A1 (en) * | 2006-11-02 | 2010-03-11 | Rockwool International A/S | Production of mineral fibers |
-
2007
- 2007-10-19 DE DE102007050132A patent/DE102007050132A1/de not_active Withdrawn
-
2008
- 2008-09-05 EP EP08801844A patent/EP2210053A1/de not_active Withdrawn
- 2008-09-05 WO PCT/EP2008/007249 patent/WO2009052894A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009052894A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009052894A1 (de) | 2009-04-30 |
| DE102007050132A1 (de) | 2009-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69526422T2 (de) | Schmelzverfahren für Lichtbogenofen mit verschiedenen Energiequellen und Lichtbogen dafür | |
| EP1108071B1 (de) | Multifunktionslanze und deren verwendung | |
| EP1466022B1 (de) | Verfahren zur pyrometallurgischen behandlung von metallen, metallschmelzen und/oder schlacken sowie eine injektorvorrichtung | |
| WO1996032505A1 (de) | Anlage und verfahren zum herstellen von eisenschmelzen nach dem mehrzonenschmelzverfahren | |
| EP2284130A1 (de) | Verfahren zur Herstellung von Mineralwolle | |
| DE2428891B2 (de) | Schachtofen zum Schmelzen von mineralischen Substanzen zur Herstellung von Mineralwolle | |
| DE69802427T2 (de) | Feuerfeste mauerstruktur sowie aus diese bestehendes metallurgisches gefäss und verfahren zur verwendung dieser feuerfesten mauerstruktur | |
| WO2003070651A1 (de) | Einrichtung zum schmelzen von stäuben | |
| EP0167895B1 (de) | Verfahren und Einrichtung zum Herstellen von Stahl aus Schrott | |
| DE69318995T2 (de) | Führung eines Hochofens | |
| DE2729184A1 (de) | Schachtofen oder kupolofen sowie verfahren zur kontinuierlichen erschmelzung und raffination von zementkupfer im kupolofen und zugeordneten einrichtungen | |
| EP2210053A1 (de) | Düsenimplantat für kupol- oder schachtöfen | |
| DE2737441A1 (de) | Verfahren und vorrichtung zum kontinuierlichen aufheizen einer eisenschmelze | |
| EP0425620B1 (de) | Verfahren und vorrichtung zum schmelzen von metallen im kokslos betriebenen kupolofen | |
| WO2012089754A2 (de) | Verfahren zur pyrometallurgischen behandlung von metallen, metallschmelzen und/ oder schlacken | |
| EP0663450A1 (de) | Verfahren und Vorrichtung zur Herstellung von Eisenschmelzen in Herd-Schachtofen | |
| EP2912199B1 (de) | Verfahren und vorrichtung zur energiezufuhr in ein schrotthaufwerk in einem elektrolichtbogenofen | |
| EP2440872B1 (de) | Verfahren zum betreiben eines bodenspülsystems eines bof-konverters | |
| DE2729983B2 (de) | Verfahren zur Stahlerzeugung | |
| DE1133513B (de) | Elektrischer Schmelzofen fuer Hochofenschlacke od. dgl. | |
| DE76646C (de) | Verfahren und Regenerativ-Schachtofen zur Gewinnung von Metallen (besonders Eisen) unmittelbar aus den Erzen | |
| DE60204575T2 (de) | Verfahren zur herstellung einer zu fasern verarbeitbaren schmelze eines mineralmaterials | |
| EP1734321B1 (de) | Verfahren und Schachtofen zum Erhitzen und Niederschmelzen von Reststoffen wie beispielsweise Schrott | |
| DE1408782C (de) | Verfahren zum Betreiben eines Ofens zum Frischen von Metallen und Ofen zur Durch fuhrung dieses Verfahrens | |
| DE102010047056B4 (de) | Verfahren zum Einschmelzen von NE-Metallen in einem gasbefeuerten Schachtofen und Schachtofenanlage zur Durchführung des Verfahrens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20100423 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
|
| DAX | Request for extension of the european patent (deleted) | ||
| 17Q | First examination report despatched |
Effective date: 20140618 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ROCKWOOL INTERNATIONAL A/S |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20160401 |