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RU2001101876A - METHOD OF SLAG PROCESSING FROM STEEL PRODUCTION - Google Patents

METHOD OF SLAG PROCESSING FROM STEEL PRODUCTION

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Publication number
RU2001101876A
RU2001101876A RU2001101876/02A RU2001101876A RU2001101876A RU 2001101876 A RU2001101876 A RU 2001101876A RU 2001101876/02 A RU2001101876/02 A RU 2001101876/02A RU 2001101876 A RU2001101876 A RU 2001101876A RU 2001101876 A RU2001101876 A RU 2001101876A
Authority
RU
Russia
Prior art keywords
bath
slag
hot air
paragraphs
iron
Prior art date
Application number
RU2001101876/02A
Other languages
Russian (ru)
Other versions
RU2226220C2 (en
Inventor
Альфред ЭДЛИНГЕР
Original Assignee
"Хольдербанк" Финансьер Гларус АГ
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from AT0071999A external-priority patent/AT407263B/en
Application filed by "Хольдербанк" Финансьер Гларус АГ filed Critical "Хольдербанк" Финансьер Гларус АГ
Publication of RU2001101876A publication Critical patent/RU2001101876A/en
Application granted granted Critical
Publication of RU2226220C2 publication Critical patent/RU2226220C2/en

Links

Claims (8)

1. Способ переработки шлаков от производства стали и, в случае необходимости, железосодержащих материалов, как, например, шлаки электропечей, конвертерные шлаки, пыли от производства стали, окалина прокатных станов или отходы металлургии вторичных металлов, отличающийся тем, что жидкие шлаки от производства стали, соответственно, железосодержащий материал, смешивают с хромовыми рудами или хром- и/или никельсодержащими пылями для установления основности шлаков 1,2-1,6, причем температуру ванны поддерживают выше 1600oС, главным образом в диапазоне 1650-1800oС, и вводят в углеродсодержащую ванну жидкого чугуна или формируют ее, и шлак и образовавшийся феррохромовый сплав выпускают отдельно.1. A method of processing slag from steel production and, if necessary, iron-containing materials, such as electric furnace slag, converter slag, steel dust, mill scale or secondary metallurgy waste, characterized in that liquid slag from steel production respectively, the iron-containing material is mixed with chrome ores or chromium and / or nickel-containing dusts to establish the basicity of slags 1.2-1.6, and the bath temperature is maintained above 1600 o C, mainly in the range zone 1650-1800 o C, and enter into a carbon-containing bath of molten iron or form it, and the slag and the resulting ferrochrome alloy are released separately. 2. Способ по п. 1, отличающийся тем, что через трубу для горячего воздуха в ванну вдувают хромовые руды или хром- и/или никельсодержащие пыли размером частиц ниже 4 мм, предпочтительно 0,5-2 мм. 2. The method according to claim 1, characterized in that chrome ores or chromium and / or nickel-containing dusts with particle sizes below 4 mm, preferably 0.5-2 mm, are blown into the bath through the hot air pipe. 3. Способ по п. 2, отличающийся тем, что используют горячий воздух с температурой 1200-1600oС.3. The method according to p. 2, characterized in that they use hot air with a temperature of 1200-1600 o C. 4. Способ по п. 1, 2 или 3, отличающийся тем, что горячий воздух обогащают кислородом до содержания кислорода 25-40 мас. %. 4. The method according to p. 1, 2 or 3, characterized in that the hot air is enriched with oxygen to an oxygen content of 25-40 wt. % 5. Способ по любому из пп. 1-4, отличающийся тем, что устанавливают основность в диапазоне 1,4-1,55. 5. The method according to any one of paragraphs. 1-4, characterized in that establish the basicity in the range of 1.4-1.55. 6. Способ по любому из пп. 1-5, отличающийся тем, что горячий воздух вместе с хромовыми рудами, соответственно, хром- и/или никельсодержащими пылями направляют в ванну со скоростью потока выше 500 м/с, главным образом 700 м/с. 6. The method according to any one of paragraphs. 1-5, characterized in that the hot air together with chrome ores, respectively, chromium and / or nickel-containing dust is directed into the bath with a flow velocity above 500 m / s, mainly 700 m / s. 7. Способ по любому из пп. 1-6, отличающийся тем, что содержание углерода в ванне жидкого чугуна поддерживают выше 3 мас. % углерода. 7. The method according to any one of paragraphs. 1-6, characterized in that the carbon content in the bath of molten iron support above 3 wt. % carbon. 8. Способ по любому из пп. 1-7, отличающийся тем, что жидкий шлак от производства стали и хромовые руды смешивают в шлаковом ковше и главным образом при использовании графитовых электродов подвергают электронагреванию и при температуре выше 1700oС, предпочтительно, выше 1750oС, вводят в ванну жидкого чугуна, после чего ванну жидкого чугуна науглероживают и продувают горячий воздух.8. The method according to any one of paragraphs. 1-7, characterized in that the liquid slag from steel production and chrome ores are mixed in a slag ladle, and mainly when using graphite electrodes, they are electrically heated and, at a temperature above 1700 ° C, preferably above 1750 ° C, are introduced into a bath of molten iron, after which a bath of molten cast iron is carburized and hot air is purged.
RU2001101876A 1999-04-22 2000-04-14 Steelmaking slag reprocessing method RU2226220C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA719/99 1999-04-22
AT0071999A AT407263B (en) 1999-04-22 1999-04-22 METHOD FOR REPRODUCING STEEL SLAG

Publications (2)

Publication Number Publication Date
RU2001101876A true RU2001101876A (en) 2002-12-20
RU2226220C2 RU2226220C2 (en) 2004-03-27

Family

ID=3498016

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2001101876A RU2226220C2 (en) 1999-04-22 2000-04-14 Steelmaking slag reprocessing method

Country Status (18)

Country Link
US (1) US6409793B1 (en)
EP (1) EP1090152B1 (en)
JP (1) JP3548123B2 (en)
KR (1) KR20010053024A (en)
CN (1) CN1185357C (en)
AR (1) AR023532A1 (en)
AT (1) AT407263B (en)
AU (1) AU773997B2 (en)
BG (1) BG105094A (en)
BR (1) BR0006077A (en)
CA (1) CA2334277C (en)
CZ (1) CZ300230B6 (en)
DE (1) DE50005247D1 (en)
ES (1) ES2215632T3 (en)
RU (1) RU2226220C2 (en)
SK (1) SK285355B6 (en)
WO (1) WO2000065108A1 (en)
ZA (1) ZA200007317B (en)

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CN100344551C (en) * 2005-10-24 2007-10-24 安徽工业大学 Method of preparing poly-silicon iron aluminium sulphate using metallugical slag
RU2010114611A (en) 2007-09-14 2011-10-20 Баррик Гольд Корпорейшн (CA) METHOD OF RESTORING PLATINUM METALS USING REDUCERS
CN103031390A (en) * 2011-09-30 2013-04-10 鞍钢股份有限公司 Method for utilizing tailings after hot-disintegration treatment of converter slag
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CN103558108B (en) * 2013-07-25 2016-03-30 南京钢铁股份有限公司 A kind of method measuring metal Ferrum content in converter slag
FI126049B (en) 2013-09-12 2016-06-15 Global Ecoprocess Services Oy Process for the treatment of metals
CN106191359A (en) * 2016-08-19 2016-12-07 东北大学 A kind of method of slag bath reduction treatment blast furnace dust
US11254992B2 (en) * 2017-10-20 2022-02-22 Nippon Steel Corporation Method of dechromizing molten iron and method of manufacturing phosphate fertilizer raw material
FI20195153A1 (en) * 2019-03-01 2020-09-02 Outokumpu Oy Combined smelting of molten slags and residuals from stainless steel and ferrochromium works
CN110218008B (en) * 2019-06-24 2021-11-05 华北理工大学 A method for removing iron and modifying liquid tapping steel slag with carbon-containing molten iron
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JP7663519B2 (en) 2020-02-04 2025-04-16 Ｊｆｅミネラル株式会社 How Chromium Alloys are Made
CN112939489A (en) * 2021-01-28 2021-06-11 天津水泥工业设计研究院有限公司 Method for on-line adjusting slagging alkalinity of smelting reduction furnace by utilizing red mud
EP4056721A1 (en) * 2021-03-08 2022-09-14 SMS Group GmbH Method for producing a ferrous alloy with low carbon content
CN116240445B (en) * 2023-01-09 2025-05-27 山西太钢不锈钢股份有限公司 Production method of low Cr pure iron

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