SETT VID FERSKNING AV FOSFORFATTIGT TACKJERN I KONVERTER

SETT VID FERSKNING AV FOSFORFATTIGT TACKJERN I KONVERTER

1403058 Converter steel-making EISENWERK-GES MAXIMILIANSHUTTE mbH 7 Dec 1972 [7 Dec 1971] 56438/72 Heading C7D A method of refining a low-phosphorus pig iron melt in a converter comprises blowing a suspension of powdered lime in O 2 into the melt through the inner of a pair of coaxial nozzles projec...

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Hauptverfasser: H KNUPPEL, K BROTZMANN, H G FASSBINDE
Format: Patent
Sprache:swe
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CHEMISTRY
METALLURGY
METALLURGY OF IRON
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL
TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
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creator H KNUPPEL
K BROTZMANN
H G FASSBINDE
description 1403058 Converter steel-making EISENWERK-GES MAXIMILIANSHUTTE mbH 7 Dec 1972 [7 Dec 1971] 56438/72 Heading C7D A method of refining a low-phosphorus pig iron melt in a converter comprises blowing a suspension of powdered lime in O 2 into the melt through the inner of a pair of coaxial nozzles projecting through the lining of the converter below the melt surface, a liquid or gaseous hydrocarbon being blown through the outer nozzle as a protective. Suitable hydrocarbons include CH 4 , C 3 H 8 , C 4 H 10 , C6H6, alcohol, kerosene, natural gas, coke oven gas, and light fuel oil, preferably up to 10% of the O 2 . Prior to the above process, lime may be blown in with N 2 or Ar, again surrounded by a hydrocarbon, to effect desulphurization. The lime may be added in batches, or continuously in varying amounts. A fluxing agent, e.g. fluorite, feldspar, bauxite may also be added to the O 2 stream.
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Suitable hydrocarbons include CH 4 , C 3 H 8 , C 4 H 10 , C6H6, alcohol, kerosene, natural gas, coke oven gas, and light fuel oil, preferably up to 10% of the O 2 . Prior to the above process, lime may be blown in with N 2 or Ar, again surrounded by a hydrocarbon, to effect desulphurization. The lime may be added in batches, or continuously in varying amounts. 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Suitable hydrocarbons include CH 4 , C 3 H 8 , C 4 H 10 , C6H6, alcohol, kerosene, natural gas, coke oven gas, and light fuel oil, preferably up to 10% of the O 2 . Prior to the above process, lime may be blown in with N 2 or Ar, again surrounded by a hydrocarbon, to effect desulphurization. The lime may be added in batches, or continuously in varying amounts. 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Suitable hydrocarbons include CH 4 , C 3 H 8 , C 4 H 10 , C6H6, alcohol, kerosene, natural gas, coke oven gas, and light fuel oil, preferably up to 10% of the O 2 . Prior to the above process, lime may be blown in with N 2 or Ar, again surrounded by a hydrocarbon, to effect desulphurization. The lime may be added in batches, or continuously in varying amounts. A fluxing agent, e.g. fluorite, feldspar, bauxite may also be added to the O 2 stream.</abstract><oa>free_for_read</oa></addata></record>
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subjects CHEMISTRY
METALLURGY
METALLURGY OF IRON
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL
TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
title SETT VID FERSKNING AV FOSFORFATTIGT TACKJERN I KONVERTER
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