DE257686C - - Google Patents
Info
- Publication number
- DE257686C DE257686C DENDAT257686D DE257686DA DE257686C DE 257686 C DE257686 C DE 257686C DE NDAT257686 D DENDAT257686 D DE NDAT257686D DE 257686D A DE257686D A DE 257686DA DE 257686 C DE257686 C DE 257686C
- Authority
- DE
- Germany
- Prior art keywords
- iron
- manganese
- slag
- sulfur
- fuel
- 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.)
- Active
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- PWHULOQIROXLJO-UHFFFAOYSA-N manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 12
- 229910052748 manganese Inorganic materials 0.000 claims description 12
- 239000011572 manganese Substances 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- 229910052717 sulfur Inorganic materials 0.000 claims description 7
- 239000011593 sulfur Substances 0.000 claims description 7
- 229910000805 Pig iron Inorganic materials 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 229910000499 pig iron Inorganic materials 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 150000002927 oxygen compounds Chemical class 0.000 claims 1
- 239000000446 fuel Substances 0.000 description 6
- 235000019738 Limestone Nutrition 0.000 description 4
- 239000006028 limestone Substances 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000010436 fluorite Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 235000015450 Tilia cordata Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive Effects 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- -1 z. B. the limestone Chemical compound 0.000 description 1
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
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
PATENTSCHRIFTPATENT LETTERING
- M 257686 KLASSE 18 b. GRUPPEX- M 257686 CLASS 18 b. GRUPPEX
Schwefel durch das Eisen.Sulfur through the iron.
Patentiert im Deutschen Reiche vom 24. März 1912 ab. Patented in the German Empire on March 24, 1912.
Gegenstand der Erfindung ist eine Neuerung
beim Schmelzen von Eisen in Kupolöfen, die darin besteht, daß als Zuschlag basische Martinschlacke
dem Ofen zugeführt wird.
Bisher bestanden die Zuschläge, die dem Kupolofen mit dem Roheisen und dem Brennstoff
zugeführt wurden, hauptsächlich aus Kalkstein oder Flußspat, zuweilen auch aus Manganerz, das jedoch teuer ist. Diese habenThe subject of the invention is an innovation in the melting of iron in cupola furnaces, which consists in adding basic Martin slag to the furnace.
So far, the surcharges that were fed to the cupola with the pig iron and the fuel consisted mainly of limestone or fluorspar, sometimes also of manganese ore, which is expensive. Have this
ίο den Zweck, sowohl die Asche des Brennstoffes und den Sand zu verschlacken, der den Roheisenmasseln anhaftet, als auch gleichzeitig das Eisen vor der Aufnahme von Schwefel aus dem Brennstoff zu schützen.ίο the purpose of both the ashes of the fuel and slagging the sand that adheres to the pig iron ingot and at the same time to protect the iron from the absorption of sulfur from the fuel.
v5 Besonders große· Hoffnungen wurden, was die Schwefelaufnahme des Eisens anbetrifft, auf die Verwendung von Manganerz gesetzt, indem man annahm, daß durch einen kleinen Zusatz von Manganerz zum Kalksteinzuschlagev5 Particularly high · hopes were what Regarding the sulfur absorption of iron, rely on the use of manganese ore, by assuming that a small addition of manganese ore to the limestone aggregate
so der Schwefelaufnahme des Eisens aus dem Brennstoff wirksam begegnet würde. Jedoch schon bald wurde durch eingehende Versuchefestgestellt, daß kleine Mengen von Manganerz keinen Nutzen in dieser Richtung ergaben und größere Mengen erforderlich waren. Dieses ist wohl dadurch zu erklären, daß sich das Mangan in seinen Erzen in recht schwer reduzierbarer Form vorfindet. Setzte man Manganerz aber in erheblichen Mengen zu, so war das Endprodukt durch das teure Erz derart verteuert, daß das erzielte technische Resultat den aufgewendeten Kosten nicht entsprach, und man deshalb diesen Weg in der !Praxis nicht weiter beschütten hat. Bei allcdem mußte der Kalkstcinzusatz bestehen bleiben, und er wuchs mit der Erzmenge, was natürlich äußerst ungünstig auf die Ofenausmauerung einwirkte, indem er diese wegfraß. so the sulfur absorption of the iron from the Fuel would be effectively countered. However, it was soon established through detailed tests that small amounts of manganese ore were of no use in this direction and larger amounts were required. This can be explained by the fact that the manganese in its ores is very difficult to reduce Finds form. But if you added manganese ore in considerable quantities, the end product was so expensive due to the expensive ore, that the technical result achieved did not correspond to the costs incurred, and that is why this method is used in practice has not poured any further. With all this, the addition of lime had to remain, and it grew with the quantity of ore, which of course had an extremely unfavorable effect on the furnace lining by eating away it.
Durch die Verwendung der basischen Martinschlacke als Zuschlag werden nun Vorteile erzielt, die bei den bisherigen Verfahren nicht vorhanden sind. Es findet ein besonders gegenüber dem Manganerz sehr billiges Abfallprodukt aus einem anderen Betriebe eine wertvolle Verwendung, denn diese Schlacke enthält Eisen und Mangan in gewissen Mengen, so daß der Abbrand des Roheisens an diesen Stoffen verkleinert wird. Durch den Gehalt an Mangan, das in der Martinschlacke in leicht reduzierbarer und deshalb stark reaktionsfähiger Form vorhanden ist, wird auch eine leicht, flüssige Schlacke erzielt, wodurch sich der Ofenbetrieb erleichtert. Dann bringt der Mangangehalt der Schlacke noch den Vorteil mit sich, daß das Roheisen sicher vor der Aufnahme von Schwefel aus dem Brennstoff in weitestem Maße geschützt wird. Es kann also nunmehr auch Koks oder Anthrazit mit einem Schwefelgehalt von 2 Prozent oder mehr ' im Kupolofenbetriebe ohne Schädigung des Endproduktes Verwendung finden. Ferner wird der Brennstoffverbrauch erniedrigt und der Schmelzprozeß beschleunigt, da die Martinschlacke keine Kohlensäure mehr enthält, wie z. B. der Kalkstein, der jetzt nicht mehr zu- 65· geschlagen zu werden braucht. Die WärmeBy using the basic Martin slag as an additive, advantages are now achieved which are not available in the previous procedures. It is a very cheap waste product, especially compared to manganese ore from another plant a valuable use, because this slag contains iron and manganese in certain amounts, so that the burn-off of the pig iron on these substances is reduced. Due to the manganese content in the Martin slag is available in easily reducible and therefore highly reactive form, will also A light, liquid slag is achieved, which makes furnace operation easier. Then bring the manganese content of the slag still has the advantage that the pig iron is safe from the Absorption of sulfur from the fuel is protected to the greatest possible extent. It can So now also coke or anthracite with a sulfur content of 2 percent or more ' can be used in cupola operations without damaging the end product. Furthermore, the fuel consumption is reduced and the melting process is accelerated, since the Martin slag no longer contains carbonic acid, such as z. B. the limestone, which no longer needs to be felled. The heat
zum Austreiben dieses Gases wird also gespart. In der Schlacke ist aber auch noch SiO2 vorhanden, was bewirkt, daß das Ofenfutter bedeutend weniger dem Angriff durch das Flußmittel unterworfen ist wie beim Betriebe mit Kalkstein oder Flußspat. Die Lebensdauer des Ofens wird demnach verlängert und die Kosten für die Ausmauerung und Zustellung erniedrigen sich.to expel this gas is therefore saved. However, SiO 2 is also present in the slag, which means that the furnace lining is significantly less subject to attack by the flux than when operating with limestone or fluorspar. The service life of the furnace is therefore extended and the costs for the lining and lining are reduced.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE257686C true DE257686C (en) |
Family
ID=515580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT257686D Active DE257686C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE257686C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE968575C (en) * | 1951-06-08 | 1958-03-06 | Eisenwerke Muelheim Meiderich | Process for the production of foundry iron |
DE1059942B (en) * | 1952-11-04 | 1959-06-25 | Rheinstahl Eisenwerke Muelheim | Process for the enrichment of iron melts with manganese in a cupola furnace |
US5408855A (en) * | 1991-10-17 | 1995-04-25 | Sollac | Method for continuously measuring mechanical properties of a continuously produced sheet, in particular a sheet of steel |
-
0
- DE DENDAT257686D patent/DE257686C/de active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE968575C (en) * | 1951-06-08 | 1958-03-06 | Eisenwerke Muelheim Meiderich | Process for the production of foundry iron |
DE1059942B (en) * | 1952-11-04 | 1959-06-25 | Rheinstahl Eisenwerke Muelheim | Process for the enrichment of iron melts with manganese in a cupola furnace |
US5408855A (en) * | 1991-10-17 | 1995-04-25 | Sollac | Method for continuously measuring mechanical properties of a continuously produced sheet, in particular a sheet of steel |
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