[go: up one dir, main page]

RU2002113094A - METHOD AND USE OF CALCIUM NITRATE FOR FOAMING SLAGS IN THE PRODUCTION OF STEEL - Google Patents

METHOD AND USE OF CALCIUM NITRATE FOR FOAMING SLAGS IN THE PRODUCTION OF STEEL

Info

Publication number
RU2002113094A
RU2002113094A RU2002113094/02A RU2002113094A RU2002113094A RU 2002113094 A RU2002113094 A RU 2002113094A RU 2002113094/02 A RU2002113094/02 A RU 2002113094/02A RU 2002113094 A RU2002113094 A RU 2002113094A RU 2002113094 A RU2002113094 A RU 2002113094A
Authority
RU
Russia
Prior art keywords
calcium nitrate
slag
carbon
steel
production
Prior art date
Application number
RU2002113094/02A
Other languages
Russian (ru)
Other versions
RU2241046C2 (en
Inventor
Петтер ТУВНЕС
Торвальд Абель ЭНГ
Original Assignee
Норск Хюдро Аса
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 NO19995072A external-priority patent/NO311226B1/en
Application filed by Норск Хюдро Аса filed Critical Норск Хюдро Аса
Publication of RU2002113094A publication Critical patent/RU2002113094A/en
Application granted granted Critical
Publication of RU2241046C2 publication Critical patent/RU2241046C2/en

Links

Claims (8)

1. Способ вспенивания шлаков в производстве стали, отличающийся тем, что в шлак добавляют нитрат кальция, отдельно или вместе с углеродом.1. The method of foaming slag in the production of steel, characterized in that the slag add calcium nitrate, separately or together with carbon. 2. Способ по п.1, отличающийся тем, что нитрат кальция вдувают в шлак отдельно или в смеси с углеродом вместе со вдуваемыми газами, такими как воздух, азот, диоксид углерода или инертные газы.2. The method according to claim 1, characterized in that the calcium nitrate is blown into the slag separately or in a mixture with carbon together with blown gases such as air, nitrogen, carbon dioxide or inert gases. 3. Способ по п.2, отличающийся тем, что твердые компоненты вдувают отдельно или через ту же фурму, или вдувают в виде предварительно расплавленных гранул.3. The method according to claim 2, characterized in that the solid components are blown separately or through the same lance, or blown in the form of pre-molten granules. 4. Способ по п.1, отличающийся тем, что нитрат кальция добавляют поверх расплава отдельно или в смеси с углеродом.4. The method according to claim 1, characterized in that the calcium nitrate is added over the melt separately or in a mixture with carbon. 5. Способ по любому из пп.1-4, отличающийся тем, что соотношение между нитратом кальция и углеродом находится в диапазоне от 4:1 до 2:1.5. The method according to any one of claims 1 to 4, characterized in that the ratio between calcium nitrate and carbon is in the range from 4: 1 to 2: 1. 6. Способ вспенивания шлака нержавеющей стали, отличающийся тем, что FeSi, Al или Mg добавляют перед тем, как в шлак добавляют или вдувают нитрат кальция и углерод с помощью вдуваемого газа.6. A method of foaming stainless steel slag, characterized in that FeSi, Al or Mg are added before calcium nitrate and carbon are added or injected into the slag using injected gas. 7. Способ по п.6, отличающийся тем, что воздух, азот, диоксид углерода или инертные газы используют в качестве вдуваемых газов.7. The method according to claim 6, characterized in that air, nitrogen, carbon dioxide or inert gases are used as injected gases. 8. Применение нитрата кальция в качестве пенообразователя шлака в производстве стали.8. The use of calcium nitrate as a foaming agent of slag in steel production.
RU2002113094/02A 1999-10-18 2000-10-18 Method for recrement foaming in steel manufacturing by using calcium nitrate RU2241046C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO19995072A NO311226B1 (en) 1999-10-18 1999-10-18 Foam of slag
NO19995072 1999-10-18

Publications (2)

Publication Number Publication Date
RU2002113094A true RU2002113094A (en) 2003-11-10
RU2241046C2 RU2241046C2 (en) 2004-11-27

Family

ID=19903873

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2002113094/02A RU2241046C2 (en) 1999-10-18 2000-10-18 Method for recrement foaming in steel manufacturing by using calcium nitrate

Country Status (14)

Country Link
EP (1) EP1230404B1 (en)
JP (1) JP2003512523A (en)
KR (1) KR20020042721A (en)
CN (1) CN1206373C (en)
AT (1) ATE256755T1 (en)
AU (1) AU7972700A (en)
BR (1) BR0014781A (en)
CA (1) CA2387597A1 (en)
DE (1) DE60007355T2 (en)
ES (1) ES2213049T3 (en)
NO (1) NO311226B1 (en)
RU (1) RU2241046C2 (en)
WO (1) WO2001029271A1 (en)
ZA (1) ZA200202602B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007050478A1 (en) 2007-10-23 2009-04-30 Sms Demag Ag Process for stainless steel production with direct reduction furnaces for ferrochrome and ferronickel on the primary side of a converter
DE102010004983A1 (en) * 2010-01-19 2011-07-21 SMS Siemag Aktiengesellschaft, 40237 Process for the production of foam slag of a stainless melt in a converter
KR101295067B1 (en) * 2011-09-05 2013-08-08 주식회사 포스코 Method for manufacturing low strength base metal

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB764213A (en) * 1954-01-14 1956-12-19 Electro Chimie Metal Improvements in or relating to the desulphurisation and desiliconising of pig iron
US4528035A (en) * 1984-05-21 1985-07-09 Metro Materials Corporation Composition and process to create foaming slag cover for molten steel
SU1379317A1 (en) * 1986-07-09 1988-03-07 Орско-Халиловский металлургический комбинат Compound for foaming slag in electric arc furnace
FR2634787B1 (en) * 1988-08-01 1991-11-29 Siderurgie Fse Inst Rech PROCESS FOR OBTAINING A FOAMING SLAG IN AN ELECTRIC STEEL FURNACE
RU2075514C1 (en) * 1991-04-30 1997-03-20 Акционерное общество закрытого типа "Интермет-Сервис и К" Method of steel melting in arc furnace
EP0655508B1 (en) * 1993-11-30 1998-08-19 ACCIAI SPECIALI TERNI S.p.a. Process for using foamed slag in stainless steel production in the electric arc furnace
JPH0841521A (en) * 1994-08-02 1996-02-13 Nippon Steel Corp Ladle slag removal method
FR2753205B1 (en) * 1996-09-12 1998-12-04 Usinor Sacilor PROCESS FOR PRODUCING A FOAMING SLAG OVER A STAINLESS STEEL MELTING IN AN ELECTRIC OVEN

Similar Documents

Publication Publication Date Title
ATE361141T1 (en) CATALYTIC PROCESS FOR REDUCING NITROGEN OXIDES IN SMOKE GASES
RU2002113094A (en) METHOD AND USE OF CALCIUM NITRATE FOR FOAMING SLAGS IN THE PRODUCTION OF STEEL
CA2409693A1 (en) Carrier material and desulfurization agent for desulfurizing iron
NO995072D0 (en) Foam of slag
EP1445337A4 (en) METHOD FOR DEPHOSPHORIZING FUSION IRON
JPS565914A (en) Accelerating method for slagging in converter
SU1639922A1 (en) Composition of mixture for compacted powder welding wire
JPS5565313A (en) Steel manufacture with top blown oxygen
JPS5591914A (en) Manufacture of manganese steel
ATE299523T1 (en) DISPERSANT TREATED WITH MALEIC ACID ANHDRIDE
RU2002127855A (en) METAL DEFOSPHORATION METHOD
JPS61149417A (en) Method for subduing slag foaming
JPS6036447B2 (en) Simultaneous dephosphorization and desulfurization of hot metal
JPS57177910A (en) Production of extra low nitrogen ingot
KR20030042748A (en) A heating agent for molten steel in BOF and the BOF refining method using it
JPS5763615A (en) Manufacture of steel
JPS56112411A (en) Blowing method of top-blown converter
JPS5443816A (en) Hot iron desulfurizing agent
JPS57177912A (en) Preventing method for slopping of pure oxygen top blown converter
Yang et al. Metallurgical Characteristics and Slag-Forming Mechanism of Top-Bottom Blowing Converter
RU2002134775A (en) METHOD OF MICROALLOYING AND MODIFICATION OF STEEL
EP0858985A3 (en) Aqueous alkaline earth nitrate fertilizer composition and process for making same
KR960010882A (en) Simultaneous dephosphorization and denitrification treatment of molten iron
JPS5261109A (en) Converter operation method
GB2388612B (en) Metallurgical slag