DE824799C - Converter operation - Google Patents
Converter operationInfo
- Publication number
- DE824799C DE824799C DEL685A DEL0000685A DE824799C DE 824799 C DE824799 C DE 824799C DE L685 A DEL685 A DE L685A DE L0000685 A DEL0000685 A DE L0000685A DE 824799 C DE824799 C DE 824799C
- Authority
- DE
- Germany
- Prior art keywords
- wind
- converter
- heat
- preheating
- exhaust gases
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/30—Regulating or controlling the blowing
- C21C5/34—Blowing through the bath
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Description
Konverterbetrieb Benn I?rblasen von Stahl aus Roheisen im Konverterbetrieb ist es üblich, den Wind nur mit der hinter dem Kompressor sich ergebenden Temperatur von etwa ioo" C einzublasen. Bei dieser Verfahrensweise ist es möglich, etwa 3 bis 4c/o des Einsatzgeiviclites an Schrott ohne zu starke Erniedrigung der Badtemperatur zuzugeben, um auf diese \\'eise die M'irtschaftlichkeit günstig zu beeinflussen.Converter company Benn I blown steel from pig iron in the converter company it is common practice to set the wind only with the temperature resulting from behind the compressor of about 100 "C. With this procedure it is possible to blow about 3 to 4c / o of the amount of scrap used without reducing the bath temperature too much admit, in order to have a positive influence on the economy in this way.
Die I?rfindung weist einen Weg, um die Wärmebilanz des Konverters nennenswert zu verbessern und auf diese Weise eine erheblich größere Menge an Schrott zugeben zu können. Dies geschieht nach dem Erfindungsgedanken in derWeise,daß dieKonverteral)gase vermittels eines Oberflächenwärmeaustauschers oder durch Verwendung von Wärmespeichern nach Art der Winderhitzer, wie sie im Hochofenbetrieb üblich sind, zur Vorwärmung des Windes ausgenutzt werden. Wird der hierdurch mögliche Schrottzusatz nicht voll ausgenutzt, so kann infolge der je Windmengeneinheit erhöhten Wärmezufuhr eine entsprechende Verkürzung der Blaszeit erzielt werden.The invention shows a way to reduce the heat balance of the converter to improve significantly and in this way a significantly larger amount of scrap to be able to admit. According to the concept of the invention, this takes place in such a way that the converter gases by means of a surface heat exchanger or by using heat accumulators like the type of wind heater, as they are common in blast furnace operation, for preheating of the wind. If the scrap addition possible as a result is not full exploited, then due to the increased heat supply per wind unit, a corresponding Shortening of the blowing time can be achieved.
Die technische Durchführung dieses Verfahrens ist im Prinzip sehr einfach, indem beispielsweise ein Absaugeventilator Verwendung findet, welcher die Konverterabgase ganz oder teilweise durch den Wärmeaustauscher bzw. den Wärmespeicher saugt und ins Preie bläst.The technical implementation of this process is, in principle, very simply by using a suction fan, for example, which the Converter exhaust gases wholly or partially through the heat exchanger or the heat accumulator sucks and blows into the price.
Bei den hohen Temperaturen der Konverterabgase ist es ohne weiteres möglich, den Wind auf beispielsweise 6oo° C zu erhitzen. Gegenfiber einer normalen Temperatur von 1000 C ergibt sich daher ein zusätzlicher Wärmeaktivposten bei etwa 25 t Eiseneinsatz und etwa gooo cbm Wind je Charge voll 8000 X 0,3 X 500 = 12oooooKal. Diese Wärme kann nutzbar gemacht werden zum Erhitzen und Schmelzen von 3,35 t Schrott, wobei die Schmelzwärme mit 4o Kal und die spezifische Wärme des Eisens bei Erhitzung auf 160o° C mit durchschnittlic1i 0,2 Kal angenommen ist. Statt nur 3 bis 4% können somit etwa 1do/o Schrott mehr, also insgesamt etwa t7,5°/0 eingeschmolzen werden.At the high temperatures of the converter exhaust gases, it is easily possible to heat the wind to 600 ° C, for example. Compared to a normal temperature of 1000 C, there is therefore an additional heat active item with about 25 t of iron and about gooo cbm of wind per batch full of 8000 X 0.3 X 500 = 12oooooKal. This heat can be used for heating and melting 3.35 tons of scrap, the heat of fusion being assumed to be 40 calories and the specific heat of iron when heated to 160 ° C is assumed to be an average of 0.2 calories. Instead of just 3 to 4%, about 1 do / o more scrap can be melted down, i.e. a total of about 7.5%.
Der Gedanke, den Wind beim Konverterbetrieb vorzuheizen, ist zwar nicht neu; ebenso ist bereits ein Verfahren bekannt, die Konverterabgase zur direkten Vorwärmung und Reduktion von Erz zu verwenden.The idea of preheating the wind when using the converter is true not new; also a method is already known to direct the converter exhaust Use preheating and reduction of ore.
Es ist jedoch noch nicht vorgeschlagen worden, die Konverterabgase zur Vorwärmung des Windes zu verwenden, 'um auf diese Weise die Wärmebilanz des Betriebes im Zusammenhang mit erhölitein Schrotteinsatz. gegebenenfalls durch Verringerung der Blaszeit, maßgeblich zu verbessern.However, it has not yet been proposed to use the converter exhaust to preheat the wind in order to reduce the heat balance of the Operation in connection with increased use of scrap. possibly by reducing the blowing time to improve significantly.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL685A DE824799C (en) | 1949-12-28 | 1949-12-28 | Converter operation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL685A DE824799C (en) | 1949-12-28 | 1949-12-28 | Converter operation |
Publications (1)
Publication Number | Publication Date |
---|---|
DE824799C true DE824799C (en) | 1951-12-13 |
Family
ID=7254996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL685A Expired DE824799C (en) | 1949-12-28 | 1949-12-28 | Converter operation |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE824799C (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1000411B (en) * | 1953-08-14 | 1957-01-10 | Werner Wenzel Dr Ing | Process for cleaning converter exhaust gases |
DE1039084B (en) * | 1953-04-30 | 1958-09-18 | Waagner Biro Ag | Process and device for the continuous utilization of the intermittent amount of heat from converter exhaust gases |
DE1056159B (en) * | 1956-04-25 | 1959-04-30 | Schmidt Sche Heissdampf | Device for utilizing the heat content of converter exhaust gases |
DE1214714B (en) * | 1954-04-06 | 1966-04-21 | Waagner Biro Ag | Process for the combustion of the carbon monoxide-containing exhaust gases and fumes formed in oxygen-blowing converters used in steel production |
DE1273550B (en) * | 1963-07-24 | 1968-07-25 | Rheinische Stahlwerke | A container arranged in the exhaust gas flow of a chamberless steel melting furnace for preheating the furnace charge |
DE1279047B (en) * | 1962-01-27 | 1968-10-03 | Oschatz G M B H | Converter chimney made of cooling air pipes with additional water cooling |
FR2384849A1 (en) * | 1977-03-25 | 1978-10-20 | Hoesch Werke Ag | PROCESS FOR PREHEATING THE GASEOUS OXYGEN CARRIER DURING THE CONVERSION OF THE STEEL TO OXYGEN |
-
1949
- 1949-12-28 DE DEL685A patent/DE824799C/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1039084B (en) * | 1953-04-30 | 1958-09-18 | Waagner Biro Ag | Process and device for the continuous utilization of the intermittent amount of heat from converter exhaust gases |
DE1000411B (en) * | 1953-08-14 | 1957-01-10 | Werner Wenzel Dr Ing | Process for cleaning converter exhaust gases |
DE1000411C2 (en) * | 1953-08-14 | 1957-07-11 | Dietrich H Schwencke Dipl Ing | Process for cleaning converter exhaust gases |
DE1214714B (en) * | 1954-04-06 | 1966-04-21 | Waagner Biro Ag | Process for the combustion of the carbon monoxide-containing exhaust gases and fumes formed in oxygen-blowing converters used in steel production |
DE1056159B (en) * | 1956-04-25 | 1959-04-30 | Schmidt Sche Heissdampf | Device for utilizing the heat content of converter exhaust gases |
DE1279047B (en) * | 1962-01-27 | 1968-10-03 | Oschatz G M B H | Converter chimney made of cooling air pipes with additional water cooling |
DE1273550B (en) * | 1963-07-24 | 1968-07-25 | Rheinische Stahlwerke | A container arranged in the exhaust gas flow of a chamberless steel melting furnace for preheating the furnace charge |
FR2384849A1 (en) * | 1977-03-25 | 1978-10-20 | Hoesch Werke Ag | PROCESS FOR PREHEATING THE GASEOUS OXYGEN CARRIER DURING THE CONVERSION OF THE STEEL TO OXYGEN |
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