CA2365938A1 - Method of reducing slags in size and device for carrying out said method - Google Patents
Method of reducing slags in size and device for carrying out said method Download PDFInfo
- Publication number
- CA2365938A1 CA2365938A1 CA 2365938 CA2365938A CA2365938A1 CA 2365938 A1 CA2365938 A1 CA 2365938A1 CA 2365938 CA2365938 CA 2365938 CA 2365938 A CA2365938 A CA 2365938A CA 2365938 A1 CA2365938 A1 CA 2365938A1
- Authority
- CA
- Canada
- Prior art keywords
- melting cyclone
- slags
- cooling chamber
- pressure
- melting
- 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.)
- Abandoned
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/022—Methods of cooling or quenching molten slag
- C21B2400/026—Methods of cooling or quenching molten slag using air, inert gases or removable conductive bodies
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/062—Jet nozzles or pressurised fluids for cooling, fragmenting or atomising slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/066—Receptacle features where the slag is treated
- C21B2400/068—Receptacle features where the slag is treated with a sealed or controlled environment
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Disintegrating Or Milling (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Furnace Details (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention relates to a method and to a device for reducing slags in size by melting the slags and then spraying and granulating them in a cooling chamber. According to the inventive method, the solid slags are molten in a pressure-proof closable melt cyclone and the molten slags are conveyed directly from the melt cyclone to a cooling chamber, said cooling chamber having a lower pressure than the melt cyclone. The inventive device comprise s a melt cyclone with an outlet that enlarges from the narrowest point towards the orifice to which a cooling chamber is connected, especially flanged, so as to withstand the pressure.
Description
~
Method for Disintearating~ Slaas and Device for Carrvina out said Method The invention relates to a method for disintegrating slags, in which the slags are melted and atomized and granulated in a cooling chamber, as well as a device for carrying out said method.
In order to disintegrate molten material, it has already been known to feed pressure water to the slag melt and discharge the slag melt along with at least a portion of the vapor formed. Metallurgical slags of suitable chemical compositions are frequently granulated, which means that they are quenched with water from the melt flow with the aim to largely prevent crystallization by rapid solidification and rather obtain an amorphous, glassy structure of the granules. Such granulate is a valuable raw material for the production of hydraulic binders. The production of binders, as a rule, calls for further steps such as, for instance, the drying and fine-grinding of the granulate, and hence further energy-consuming processes.
A number of methods and devices have already been proposed for the direct processing of molten slags. Such a method for granulating and disintegrating molten material and grinding stock has already been proposed, in particular, in AT-400 114, in which the melt is introduced into a mixing chamber under pressure and pressure water vapor or water vapor mixtures are nozzled into the mixing chamber. As a result, the solidified particles will be rapidly ejected via a diffuser using the kinetic energy. In doing so, the kinetic energy was utilized for disintegration, whereby the jet emerging from the diffuser could be directed against a baffle plate or the emerging jet of another diffuser.
From Austrian application A 1826/97 another method of the initially defined kind has already been known, by which H2S
degasification could be substantially suppressed. In that known method, the liquid slag was introduced into a granulation chamber from a slag tundish in a freely flowing jet while directing pressure water jets against the slag jet.
In that configuration, the slag tundish had to be closed in a pressure-tight manner, wherein it was, furthermore, known to expand liquid slags from a slag tundish into the consecutively arranged expansion or granulation chamber by pressing a propellant jet into the region of the outlet opening from the tundish.
All those known devices, however, have presupposed already liquid, molten slags. Yet, quite a considerable portion of slags, which have subsequently had to be ground in mills, have been available in solid, more or less granulated form and a number of slags occur in an ungranulated form, partially solidifying in an amorphous, primarily crystalline form such -that the grinding work involved is relatively high, yielding crystalline products that cannot be used in cement applications. Such solid slags, as a rule, do not immediately have the composition suitable to obtain the hydraulic properties desired and, depending on their origin, also are more or less poorly grindable..
The invention aims to provide a method for disintegrating such solid slags or slag particles, by which it is feasible in a simple manner to adjust the desired slag composition and slag consistency and obtain disintegration by means of small-structured devices and without employing cumbersome grinding procedures. To solve this object, the method according to the invention essentially is characterized in that the solid stags are melted in a melting cyclone capable of being closed in a pressure-tight manner and that the melted slag is directly ejected from the melting cyclone into a cooling chamber, said cooling chamber being maintained at a lower pressure than the melting cyclone. By using a melting cyclone, it is feasible in a simple manner to close a melting cyclone of this type in a pressure-tight manner and charge the same with raw materials in solid form such that the desired slag composition will be obtained immediately. Due to the fact that the melting cyclone is directly connected with the consecutively provided cooling ~
Method for Disintearating~ Slaas and Device for Carrvina out said Method The invention relates to a method for disintegrating slags, in which the slags are melted and atomized and granulated in a cooling chamber, as well as a device for carrying out said method.
In order to disintegrate molten material, it has already been known to feed pressure water to the slag melt and discharge the slag melt along with at least a portion of the vapor formed. Metallurgical slags of suitable chemical compositions are frequently granulated, which means that they are quenched with water from the melt flow with the aim to largely prevent crystallization by rapid solidification and rather obtain an amorphous, glassy structure of the granules. Such granulate is a valuable raw material for the production of hydraulic binders. The production of binders, as a rule, calls for further steps such as, for instance, the drying and fine-grinding of the granulate, and hence further energy-consuming processes.
A number of methods and devices have already been proposed for the direct processing of molten slags. Such a method for granulating and disintegrating molten material and grinding stock has already been proposed, in particular, in AT-400 114, in which the melt is introduced into a mixing chamber under pressure and pressure water vapor or water vapor mixtures are nozzled into the mixing chamber. As a result, the solidified particles will be rapidly ejected via a diffuser using the kinetic energy. In doing so, the kinetic energy was utilized for disintegration, whereby the jet emerging from the diffuser could be directed against a baffle plate or the emerging jet of another diffuser.
From Austrian application A 1826/97 another method of the initially defined kind has already been known, by which H2S
degasification could be substantially suppressed. In that known method, the liquid slag was introduced into a granulation chamber from a slag tundish in a freely flowing jet while directing pressure water jets against the slag jet.
In that configuration, the slag tundish had to be closed in a pressure-tight manner, wherein it was, furthermore, known to expand liquid slags from a slag tundish into the consecutively arranged expansion or granulation chamber by pressing a propellant jet into the region of the outlet opening from the tundish.
All those known devices, however, have presupposed already liquid, molten slags. Yet, quite a considerable portion of slags, which have subsequently had to be ground in mills, have been available in solid, more or less granulated form and a number of slags occur in an ungranulated form, partially solidifying in an amorphous, primarily crystalline form such -that the grinding work involved is relatively high, yielding crystalline products that cannot be used in cement applications. Such solid slags, as a rule, do not immediately have the composition suitable to obtain the hydraulic properties desired and, depending on their origin, also are more or less poorly grindable..
The invention aims to provide a method for disintegrating such solid slags or slag particles, by which it is feasible in a simple manner to adjust the desired slag composition and slag consistency and obtain disintegration by means of small-structured devices and without employing cumbersome grinding procedures. To solve this object, the method according to the invention essentially is characterized in that the solid stags are melted in a melting cyclone capable of being closed in a pressure-tight manner and that the melted slag is directly ejected from the melting cyclone into a cooling chamber, said cooling chamber being maintained at a lower pressure than the melting cyclone. By using a melting cyclone, it is feasible in a simple manner to close a melting cyclone of this type in a pressure-tight manner and charge the same with raw materials in solid form such that the desired slag composition will be obtained immediately. Due to the fact that the melting cyclone is directly connected with the consecutively provided cooling ~
space, it is feasible according to the invention to proceed in a manner that the molten slag is directly ejected from the melting cyclone into a cooling chamber, it being merely required for such an ejection to keep the cooling chamber under a lower pressure than the melting cyclone.
Advantageously, the method according to the invention may be used in a manner that the melting cyclone is heated by waste fuels such as, e.g., wastes from the paper industry. Due to the fact that a pressure of, for instance, 2 to 10 bars is maintained within the melting cyclone, also low-quality fuels may be employed such that hydrogen sulfides remain dissolved in the molten particles or are discharged into the cooling chamber together with the same. The melting cyclone may be charged, for instance, with melting ashes from caloric power stations, whereby also waste products from the paper industry, i.e., kaolin-containing wastes contaminated with paper fibers as energy carriers may advantageously be employed. The desired synthesis of specific binder systems may be directly prepared in regard to their chemical compositions within the melting cyclone, it being feasible to adjust, for instance, a Ca0 to Si02 basicity of smaller than 0.2 in the case of pozzolanic binder systems and an accordingly higher basicity of more than 1 with basic systems. Advantageously, the method according to the invention is realized such that the grain sizes of the slags or ashes used in the melting cyclone are chosen to be smaller than 10 mm, preferably smaller than 4 mm. Particularly when using highly coal-dust-loaded melting ashes from conventional caloric power stations, the portion of coal dust may be rendered utilizable for heating purposes in the melting cyclone so as to enable a number of waste substances to be used in a reasonable manner. Special, more or less demanding slag tundish designs in which the slags may be kept in the molten state may, thus, be obviated, since the material melted in the melting cyclone can be ejected directly into the cooling or granulation space and there will be extremely finely dispersed by appropriate quenching and, in most cases, already disintegrated to the desired extent.
Advantageously, the method according to the invention may be used in a manner that the melting cyclone is heated by waste fuels such as, e.g., wastes from the paper industry. Due to the fact that a pressure of, for instance, 2 to 10 bars is maintained within the melting cyclone, also low-quality fuels may be employed such that hydrogen sulfides remain dissolved in the molten particles or are discharged into the cooling chamber together with the same. The melting cyclone may be charged, for instance, with melting ashes from caloric power stations, whereby also waste products from the paper industry, i.e., kaolin-containing wastes contaminated with paper fibers as energy carriers may advantageously be employed. The desired synthesis of specific binder systems may be directly prepared in regard to their chemical compositions within the melting cyclone, it being feasible to adjust, for instance, a Ca0 to Si02 basicity of smaller than 0.2 in the case of pozzolanic binder systems and an accordingly higher basicity of more than 1 with basic systems. Advantageously, the method according to the invention is realized such that the grain sizes of the slags or ashes used in the melting cyclone are chosen to be smaller than 10 mm, preferably smaller than 4 mm. Particularly when using highly coal-dust-loaded melting ashes from conventional caloric power stations, the portion of coal dust may be rendered utilizable for heating purposes in the melting cyclone so as to enable a number of waste substances to be used in a reasonable manner. Special, more or less demanding slag tundish designs in which the slags may be kept in the molten state may, thus, be obviated, since the material melted in the melting cyclone can be ejected directly into the cooling or granulation space and there will be extremely finely dispersed by appropriate quenching and, in most cases, already disintegrated to the desired extent.
The device according to the invention for carrying out the method essentially is characterized by a melting cyclone including a discharge opening that widens from a narrowest point as far as to its mouth and to which a cooling chamber is connected in a pressure-tight manner, particularly flanged.
The special design of the outlet opening of the melting cyclone causes great turbulences in the exit region and hence the effective formation of shearing forces beneficial to the disintegration of the molten particles. By providing the cooling chamber in an immediately adjoining manner, it will be feasible to obtain a rapid disintegration yielding particularly small particles, in particular if the melt is highly saturated with hydrogen sulfides or other gases (e. g., air, C02, N2), whereby an accordingly large quantity of water vapor, which enables the hydropneumatic delivery of the fine granulates without any additional gas feeding, will be formed in the jacket of the cooling chamber, or within the cooling space itself, by the injection of high-pressure water. The quenching chamber or cooling chamber may be maintained at a pressure of between 0 and 5 bars, wherein hydrocarbons may optionally also be injected into the cooling chamber to ensure rapid. cooling. In this ease, the configuration advantageously is devised such that water nozzles oriented towards the axis of the mouth of the melting cyclone are arranged in the region of said mouth, connections for water vapor, hydrocarbons and/or coal - water mixtures preferably running into the cooling chamber.
In a particularly advantageous manner, the configuration is devised such that the melting cyclone comprises water-cooled walls, thus enabling water vapor to form also in the region of the melting cyclone, which water vapor may then be used as a conveying means or may be thermally worked off.
If high-pressure water is used to cool the slag particles, it is feasible, particularly at a water pressure of between 100 and 300 bars, to obtain comminution levels to particle diameters of far below 300 um so as to readily enable the hydropneumatic delivery of such comminuted particles.
_ 5 _ Discharging in this case may be effected via a cellular wheel or a sizing wheel, thus enabling material having a grinding fineness of down to 6000 Blames (cm2 per gram) to be directly discharged from the cooling chamber. The microgranulate flow after having been sluiced out of the cooling chamber may subsequently be cooled by air or optionally further cooled using inert gases in order to prevent hydration and hence a deterioration of the hydraulic properties of the product.
The use of a melting cyclone allows for the mixing of slags in a manner that the desired slag composition will be obtained immediately and, above all, also waste substances will be homogenously bound into the liquid slags, it being feasible to use, in particular, slags which, as a rule, are no longer available in the molten state and may be of almost any origin.
In the following, the invention will be explained in more detail by way of a device for carrying out the method according to the invention, which is schematically illustrated in the drawing.
In the drawing, 1 serves to denote a melting cyclone comprising a charging opening 2 for feeding pre-crushed slags or ashes. The pre-comminuted solid material may be pneumatically conveyed into the melting cyclone 1 comprising a combustion chamber 3 formed within the melting cyclone 1.
Additional fuels, unless simultaneously introduced along with the charged solids, may be injected through ducts 4. The melting cyclone, furthermore, comprises, in the region of the melting cyclone wall, a connection means 5 to feed cooling water and a connection means 6 to carry off cooling water.
Further cooling water supplies 7 are provided for the region of the sonically widening outlet opening 8 of the melting cyclone, said cooling water being carried off via a separate duct.
A cooling chamber 9 is directly flanged to the outlet opening 8 or mouth of the melting cyclone, the cooling chamber flange being denoted by 10 and the melting cyclone flange being denoted by 11. The combustion chamber 3 of the melting cyclone is maintained at a pressure of 2 to 10 bars, the consecutively provided cooling chamber 9, as a rule, being kept under a pressure of 0 to 5 bars. An annular duct 12 for high-pressure water is provided in the region of the outlet opening mouth 8 of the melting cyclone, the axes of the high-pressure-water outlet nozzles 13 being oriented substantially radial and intersecting the longitudinal axis 14 of the melting cyclone and the adjoining cooling space or cooling chamber 9.
The atomized material solidifies to extremely small particles in the interior of the cooling chamber 9, wherein the walls of the cooling chamber 9 may be cooled by high-pressure water or vapor in order to thereby effect radiation cooling.
Hydrocarbons may be injected through nozzles schematically indicated by 15 to accelerate cooling of the solidified material, the fine granulates formed being pneumatically deliverable through the discharge opening 16 along with the exhaust gases.
The special design of the outlet opening of the melting cyclone causes great turbulences in the exit region and hence the effective formation of shearing forces beneficial to the disintegration of the molten particles. By providing the cooling chamber in an immediately adjoining manner, it will be feasible to obtain a rapid disintegration yielding particularly small particles, in particular if the melt is highly saturated with hydrogen sulfides or other gases (e. g., air, C02, N2), whereby an accordingly large quantity of water vapor, which enables the hydropneumatic delivery of the fine granulates without any additional gas feeding, will be formed in the jacket of the cooling chamber, or within the cooling space itself, by the injection of high-pressure water. The quenching chamber or cooling chamber may be maintained at a pressure of between 0 and 5 bars, wherein hydrocarbons may optionally also be injected into the cooling chamber to ensure rapid. cooling. In this ease, the configuration advantageously is devised such that water nozzles oriented towards the axis of the mouth of the melting cyclone are arranged in the region of said mouth, connections for water vapor, hydrocarbons and/or coal - water mixtures preferably running into the cooling chamber.
In a particularly advantageous manner, the configuration is devised such that the melting cyclone comprises water-cooled walls, thus enabling water vapor to form also in the region of the melting cyclone, which water vapor may then be used as a conveying means or may be thermally worked off.
If high-pressure water is used to cool the slag particles, it is feasible, particularly at a water pressure of between 100 and 300 bars, to obtain comminution levels to particle diameters of far below 300 um so as to readily enable the hydropneumatic delivery of such comminuted particles.
_ 5 _ Discharging in this case may be effected via a cellular wheel or a sizing wheel, thus enabling material having a grinding fineness of down to 6000 Blames (cm2 per gram) to be directly discharged from the cooling chamber. The microgranulate flow after having been sluiced out of the cooling chamber may subsequently be cooled by air or optionally further cooled using inert gases in order to prevent hydration and hence a deterioration of the hydraulic properties of the product.
The use of a melting cyclone allows for the mixing of slags in a manner that the desired slag composition will be obtained immediately and, above all, also waste substances will be homogenously bound into the liquid slags, it being feasible to use, in particular, slags which, as a rule, are no longer available in the molten state and may be of almost any origin.
In the following, the invention will be explained in more detail by way of a device for carrying out the method according to the invention, which is schematically illustrated in the drawing.
In the drawing, 1 serves to denote a melting cyclone comprising a charging opening 2 for feeding pre-crushed slags or ashes. The pre-comminuted solid material may be pneumatically conveyed into the melting cyclone 1 comprising a combustion chamber 3 formed within the melting cyclone 1.
Additional fuels, unless simultaneously introduced along with the charged solids, may be injected through ducts 4. The melting cyclone, furthermore, comprises, in the region of the melting cyclone wall, a connection means 5 to feed cooling water and a connection means 6 to carry off cooling water.
Further cooling water supplies 7 are provided for the region of the sonically widening outlet opening 8 of the melting cyclone, said cooling water being carried off via a separate duct.
A cooling chamber 9 is directly flanged to the outlet opening 8 or mouth of the melting cyclone, the cooling chamber flange being denoted by 10 and the melting cyclone flange being denoted by 11. The combustion chamber 3 of the melting cyclone is maintained at a pressure of 2 to 10 bars, the consecutively provided cooling chamber 9, as a rule, being kept under a pressure of 0 to 5 bars. An annular duct 12 for high-pressure water is provided in the region of the outlet opening mouth 8 of the melting cyclone, the axes of the high-pressure-water outlet nozzles 13 being oriented substantially radial and intersecting the longitudinal axis 14 of the melting cyclone and the adjoining cooling space or cooling chamber 9.
The atomized material solidifies to extremely small particles in the interior of the cooling chamber 9, wherein the walls of the cooling chamber 9 may be cooled by high-pressure water or vapor in order to thereby effect radiation cooling.
Hydrocarbons may be injected through nozzles schematically indicated by 15 to accelerate cooling of the solidified material, the fine granulates formed being pneumatically deliverable through the discharge opening 16 along with the exhaust gases.
Claims (8)
1. A method for disintegrating slags, in which the slags are melted and atomized and granulated in a cooling chamber, characterized in that the solid slags are melted in a melting cyclone capable of being closed in a pressure-tight manner and that the melted slag is directly ejected from the melting cyclone into a cooling chamber by the gas pressure formed within the melting cyclone and via a nozzle having a cross section widening in the flow direction, said cooling chamber being maintained at a lower pressure than said melting cyclone, i.e., at a pressure of 0 to 5 bars, and disintegrated solidified slag being collected.
2. A method according to claim 1, characterized in that the melting cyclone is heated by waste fuels such as, e.g., wastes from the paper industry.
3. A method according to claim 1 or 2, characterized in that melting ashes from caloric power stations and/or cold blast furnace slags are introduced into the melting cyclone.
4. A method according to claim 1, 2 or 3, characterized in that the grain sizes of the slags or ashes used in the melting cyclone are chosen to be smaller than 10 mm, preferably smaller than 4 mm.
5. A device for carrying out the method according to any one of claims 1 to 4, characterized by a melting cyclone (1) including a discharge opening (8) that widens from a narrowest point as far as to its mouth and to which a cooling chamber (9) is connected in a pressure-tight manner, particularly flanged.
6. A device according to claim 5, characterized in that high-pressure water nozzles (13) are arranged in the region of the mouth of the melting cyclone (1), which nozzles are oriented towards the axis (14) of said mouth.
7. A device according to any one of claims 5 to 6, characterized in that connections for water vapor, hydrocarbons and/or coal - water mixtures run into the cooling chamber (9).
8. A device according to any one of claims 5 to 7, characterized in that the melting cyclone (1) comprises water-cooled walls.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0063299A AT407152B (en) | 1999-04-09 | 1999-04-09 | METHOD FOR CRUSHING SLAGS AND DEVICE FOR CARRYING OUT THIS METHOD |
| ATA632/99 | 1999-04-09 | ||
| PCT/AT2000/000079 WO2000061820A1 (en) | 1999-04-09 | 2000-04-05 | Method of reducing slags in size and device for carrying out said method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2365938A1 true CA2365938A1 (en) | 2000-10-19 |
Family
ID=3495736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2365938 Abandoned CA2365938A1 (en) | 1999-04-09 | 2000-04-05 | Method of reducing slags in size and device for carrying out said method |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1183394B1 (en) |
| AT (2) | AT407152B (en) |
| CA (1) | CA2365938A1 (en) |
| DE (1) | DE50000687D1 (en) |
| WO (1) | WO2000061820A1 (en) |
| ZA (1) | ZA200108087B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT410102B (en) * | 2001-02-27 | 2003-02-25 | Tribovent Verfahrensentwicklg | MELT SPRAYING DEVICE |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5517071A (en) * | 1978-07-24 | 1980-02-06 | Ebara Infilco Co Ltd | Melting treatment of sludge |
| JPS582181B2 (en) * | 1979-06-07 | 1983-01-14 | 日立造船株式会社 | Molten slag granulation manufacturing method |
| US4340463A (en) * | 1981-03-13 | 1982-07-20 | The United States Of America As Represented By The United States Department Of Energy | System for utilizing oil shale fines |
| JPS61218690A (en) * | 1985-03-25 | 1986-09-29 | Mitsubishi Heavy Ind Ltd | Coal gasifier |
| IT1226638B (en) * | 1988-11-23 | 1991-01-28 | Azienda Srl A Bologna | PROCEDURE FOR THE PRODUCTION OF GRANULES, IN PARTICULAR SPHEROIDAL GRANULES, AND EQUIPMENT FOR THE IMPLEMENTATION OF SUCH METHOD |
| US5319176A (en) * | 1991-01-24 | 1994-06-07 | Ritchie G. Studer | Plasma arc decomposition of hazardous wastes into vitrified solids and non-hazardous gasses |
| DE4200341C2 (en) * | 1991-11-18 | 1997-04-17 | Kloeckner Humboldt Deutz Ag | Method and device for high-temperature gasification of fine-grained organic waste materials with a high calorific value |
| EP0913363A1 (en) * | 1997-11-03 | 1999-05-06 | DBI DEUTSCHES BRENNSTOFFINSTITUT ROHSTOFF & ANLAGENTECHNIK GmbH | Method and apparatus for thermal transforming of waste materials |
-
1999
- 1999-04-09 AT AT0063299A patent/AT407152B/en not_active IP Right Cessation
-
2000
- 2000-04-05 DE DE50000687T patent/DE50000687D1/en not_active Expired - Fee Related
- 2000-04-05 EP EP00922313A patent/EP1183394B1/en not_active Expired - Lifetime
- 2000-04-05 CA CA 2365938 patent/CA2365938A1/en not_active Abandoned
- 2000-04-05 AT AT00922313T patent/ATE226644T1/en not_active IP Right Cessation
- 2000-04-05 WO PCT/AT2000/000079 patent/WO2000061820A1/en active IP Right Grant
-
2001
- 2001-10-02 ZA ZA200108087A patent/ZA200108087B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP1183394B1 (en) | 2002-10-23 |
| ZA200108087B (en) | 2003-03-26 |
| EP1183394A1 (en) | 2002-03-06 |
| WO2000061820A1 (en) | 2000-10-19 |
| ATA63299A (en) | 2000-05-15 |
| ATE226644T1 (en) | 2002-11-15 |
| AT407152B (en) | 2001-01-25 |
| DE50000687D1 (en) | 2002-11-28 |
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