-
公开(公告)号：AT400245B
公开(公告)日：1995-11-27
申请号：AT249593
申请日：1993-12-10
Applicant: VOEST ALPINE IND ANLAGEN
Inventor： FRITZ ERNST DIPL ING , DIMITROV STEFAN DIPL ING DR
IPC: C21B13/00 , C21B13/12 , C21C5/36 , C21C5/52 , C22B7/02 , F27B3/08 , F27D3/00 , F27D3/16 , F27D21/00 , F27D21/02
Abstract: For the particularly economical utilisation of finely divided iron-containing materials, in particular of smelter dusts even in large amounts, indeed with minimisation of the energy input, in the production of an iron melt (6) in an electric arc furnace (1), the following procedure is used: . an iron melt (6) is provided in the electric arc furnace (1), . a foam slag (9) is provided and maintained on the iron melt (6) . finely divided iron-containing materials such as smelter dusts, fine ore, iron carbide, dust from the production of directly reduced iron, scale, dried metallurgical sludges, etc., are introduced continuously or batchwise into the foam slag (9), . finely divided, carbon-containing reducing agents such as coal, coke, graphite, plastics, wood, etc. are fed continuously or batchwise into the foam slag (9) and . to provide the process heat required, finely divided, carbon-containing energy carriers are additionally introduced continuously or batchwise into the foam slag (9), . process gases and carbon-containing energy carriers which form during the reduction are largely burned within the foam slag to give CO2 and H2O and further provide the locally necessary process heat and . the course of the process is accelerated by passing gases and/or gas mixtures into the iron melt (6).
-
公开(公告)号：AT412349B
公开(公告)日：2005-01-25
申请号：AT9762003
申请日：2003-06-25
Applicant: VOEST ALPINE IND ANLAGEN
Inventor： FRITZ ERNST DIPL ING
Abstract: The invention relates to a method and a production plant for producing molten metal, in particular molten steel for steel or ferro-alloys that are alloyed with Cr or Cr and Ni in synchronised method stages in several reaction vessels. The aim of the invention is to reduce production costs and to synchronise the production time for a batch of molten metal with the cycle time of a continuous casting plant that is positioned downstream. To achieve this: in a first method stage, alloying agent carriers are introduced into a base melt, a reduction agent, re-circulated slag, and/or slag forming agents and an energy carrier are then added and the alloying agent carriers are melted and reduced to a great extent by the action of a top-blowing and base-blowing process using an oxygen carrier, to produce a first pre-alloy melt; in a second method stage, a base melt and Cr carriers are optionally introduced, a reduction agent, re-circulated slag and a fossil energy carrier are then added and the Cr carrier is melted and reduced to a great extent by the action of a top-blowing and base-blowing process using an oxygen carrier, to produce a second pre-alloy melt; and in a third stage, alloying agents, in particular ferro-alloys, are added to the second pre-alloy melt, in addition to slag forming agents, and a decarbonisation process is carried out by the action of a top-blowing and base-blowing process using an oxygen carrier, to produce an alloy melt with a predefined chemical analysis and temperature.
-
公开(公告)号：MY116590A
公开(公告)日：2004-02-28
申请号：MYPI9605360
申请日：1996-12-19
Applicant: VOEST ALPINE IND ANLAGEN
Inventor： FRITZ ERNST DIPL ING , RAMASEDER NORBERT DIPL ING DR
Abstract: IN A METHOD FOR DETERMINING ELECTROMAGNETIC WAVES ORIGINATING FROM THE INTERIOR OF A MELT (3), IN PARTICULAR A METAL MELT, A .GAS-FILLED HOLLOW SPACE (26) IS FORMED WITHIN THE MELT (3) BY BLOWING IN GAS AND ELECTROMAGNETIC WAVES EMITTING FROM THE MELT (3) ARE OBSERVED THROUGH THE BLOWN-IN GAS AND EVALUATED BY FEEDING THE ELECTROMAGNETIC WAVES VIA AN OPTICAL SYSTEM (20) TO A DETECTOR (22) FOR DETERMINING THE TEMPERATURE AND/OR CHEMICAL COMPOSITION. IN ORDER TO AVOID FALSIFICATIONS OF THE MEASURED VALUES, THE EMITTING ELECTROMAGNETIC WAVES ARE CLEARED FROM ELECTROMAGNETIC WAVES (36, 37, 39, 40) DIRECTED OBLIQUELY TO THE OPTICAL AXIS (38) OF THE OPTICAL SYSTEM (20) AND PRESENT BEYOND A LIMIT RADIUS (41) DRAWN FROM THE OPTICAL AXIS (38) OF THE OPTICAL SYSTEM (20), BY REFRACTING SAID ELECTROMAGNETIC WAVES (36,37,39,40) AWAY FROM THE OPTICAL AXIS (38) OF THE OPTICAL SYSTEM (20) IN A WAVE DISPERSION MEANS (42) OF THE OPTICAL SYSTEM (20) AND ONLY ELECTROMAGNETIC WAVES DIRECTED APPROXIMATELY PARALLEL TO THE OPTICAL AXIS (38) OF THE OPTICAL SYSTEM (20) ARRIVE AT A DETECTOR (22) ARRANGED TO FOLLOW THE OPTICAL SYSTEM (20), AND/OR THE OPTICAL SYSTEM (20) IS MOVED RELATIVE TO THE HOLLOW SPACE (26) WHILE ADJUSTING ITS OPTICAL AXIS (38), UNTIL THE INTENSITY OF THE EMITTING ELECTROMAGNETIC WAVES YIELDS A MAXIMUM DURING EVALUATION OF THE SAME
-
公开(公告)号：DE19526882A1
公开(公告)日：1996-02-01
申请号：DE19526882
申请日：1995-07-22
Applicant: VOEST ALPINE IND ANLAGEN
Inventor： ENKNER BERNHARD DIPL ING DR , FRITZ ERNST DIPL ING , EYSN MANFRED ING , GRUBER RUDOLF DIPL ING , KICKINGER PETER ING
Abstract: In a method of cooling a hot surface, a liquid cooling medium is atomized by a plurality of nozzles in a hollow space surrounding the surface and open towards the atmosphere. In order to ensure uniform continuous, yet just sufficient, cooling of the hot surface, with the cooling effecting with a constant temperature as possible over an extended period of time while avoiding changing thermal expansions of the hot surface, the liquid cooling medium is continuously atomized by means of unary nozzles to a fine mist having a droplet size ranging between 4 and 60 mu m. The mist leaves the unary nozzles at a low speed and is moved along the hot surface within the hollow space surrounding the hot surface under utilization of the natural thermal current in the hollow space.
-
公开(公告)号：ATA249593A
公开(公告)日：1995-03-15
申请号：AT249593
申请日：1993-12-10
Applicant: VOEST ALPINE IND ANLAGEN
Inventor： FRITZ ERNST DIPL ING , DIMITROV STEFAN DIPL ING DR
IPC: C21B13/00 , C21B13/12 , C21C5/36 , C21C5/52 , C22B7/02 , F27B3/08 , F27D3/00 , F27D3/16 , F27D21/00 , F27D21/02
Abstract: For the particularly economical utilisation of finely divided iron-containing materials, in particular of smelter dusts even in large amounts, indeed with minimisation of the energy input, in the production of an iron melt (6) in an electric arc furnace (1), the following procedure is used: . an iron melt (6) is provided in the electric arc furnace (1), . a foam slag (9) is provided and maintained on the iron melt (6) . finely divided iron-containing materials such as smelter dusts, fine ore, iron carbide, dust from the production of directly reduced iron, scale, dried metallurgical sludges, etc., are introduced continuously or batchwise into the foam slag (9), . finely divided, carbon-containing reducing agents such as coal, coke, graphite, plastics, wood, etc. are fed continuously or batchwise into the foam slag (9) and . to provide the process heat required, finely divided, carbon-containing energy carriers are additionally introduced continuously or batchwise into the foam slag (9), . process gases and carbon-containing energy carriers which form during the reduction are largely burned within the foam slag to give CO2 and H2O and further provide the locally necessary process heat and . the course of the process is accelerated by passing gases and/or gas mixtures into the iron melt (6).
-
Patent Agency Ranking
公开(公告)号：AT404942B
公开(公告)日：1999-03-25
申请号：AT110997
申请日：1997-06-27
Applicant: VOEST ALPINE IND ANLAGEN
Inventor： DIMITROV STEFAN DIPL ING DR , RAMASEDER NORBERT DIPL ING DR , PIRKLBAUER WILFRIED DIPL ING D , ZHAI YUYOU DIPL ING DR , STEINS JOHANNES DIPL ING , FRITZ ERNST DIPL ING , MUELLER JOHANNES DIPL ING DR
Abstract: To be able to produce metal melts using any metal carriers incurring in metallurgical practice as the charging materials, namely in the most diverse quantitative compositions, a plant for producing metal melts is provided with the following characteristic features:an electric arc furnace vessel (1) provided with one charging opening (11, 21) for a metal melt and/or scrap and/or direct reduced metal, in particular direct reduced iron, and/or ore and at least one electrode (16) and one slag tapping means (22),an oxygen-blowing converter vessel (3) provided with one melt tapping means (41),wherein the oxygen-blowing converter vessel (3) and the electric arc furnace vessel (1) form a unit which is connected via an overflow weir (34) and which is rigidly mounted on the foundation and,wherein the bath surface related specifically to the bath volume is smaller in the oxygen-blowing converter vessel (3) than in the electric arc furnace vessel (1) andthe oxygen-blowing converter vessel (3) shares a common reaction space with the electric arc furnace vessel (1), which space is arranged above the bath level of these vessels. (FIG. 1).
-
公开(公告)号：AT404841B
公开(公告)日：1999-03-25
申请号：AT62695
申请日：1995-04-10
Applicant: VOEST ALPINE IND ANLAGEN
Inventor： DIMITROV STEFAN DIPL ING DR , RAMASEDER NORBERT DIPL ING DR , PIRKLBAUER WILFRIED DIPL ING D , FRITZ ERNST DIPL ING , MUELLER HEINZ DIPL ING DR
Abstract: In order to be able to process in an economical manner different iron carriers in varying quantitative compositions, a plant for the production of iron melts (4), in particular steel melts, such as crude steel melts, is equipped withan electric are furnace vessel (1),a refining vessel (3) following upon the furnace vessel (1) via a weir (34) and including a bottom departing from the weir (34) in an at least partially downwardly inclined manner and an oxygen supply means (35, 36) as well as an iron melt tap (41) provided in its end region farther remote from the furnace vessel (1),a decanting vessel (2) following upon the furnace vessel (1) and having a common bottom (18) with the furnace vessel (1), said decanting vessel being provided with a slag tap (43) in its end region farther remote from the furnace vessel (1),a supply means (21) supplying liquid pig iron (20) and opening into the furnace vessel (1),a preheating shaft (5) supplying solid iron carries (7), said preheating shaft being arranged above the furnace vessel (1) and opening into the furnace vessel (1) via its lid (4) via a gas-permeable cooled shut-off means (6), anda charging shaft (10) arranged above the furnace vessel (1) and opening into the furnace vessel (1) via a gas-impermeable cooled shut-off means (11) (FIG. 1).
-
公开(公告)号：AT407398B
公开(公告)日：2001-02-26
申请号：AT147498
申请日：1998-08-28
Applicant: VOEST ALPINE IND ANLAGEN
Inventor： FRITZ ERNST DIPL ING
IPC: C21B20060101 , C21C5/46 , C21C5/52 , C22B20060101
Abstract: The invention relates to a process for producing a metal melt in a metallurgical vessel, in particular an iron or steel melt, in which metal-containing and/or metal oxide- containing charge materials in solid and if appropriate molten form are charged to the metallurgical vessel, most of the energy which is required in order to melt and if appropriate fully reduce the charge materials being applied electrically and/or by combustion and/or gasification of carbon-containing materials. The invention also relates to a multifunctional lance for use in a process according to the invention.
-
公开(公告)号：ATA147498A
公开(公告)日：2000-07-15
申请号：AT147498
申请日：1998-08-28
Applicant: VOEST ALPINE IND ANLAGEN
Inventor： FRITZ ERNST DIPL ING
IPC: C21B20060101 , C21C5/46 , C21C5/52 , C22B20060101
-
公开(公告)号：ATA21799A
公开(公告)日：2000-06-15
申请号：AT21799
申请日：1999-02-15
Applicant: VOEST ALPINE IND ANLAGEN
Inventor： FRITZ ERNST DIPL ING
-
-
-
-
-
-
-
-
-
Search Results
13
records
(took 0.021 seconds)
