ES8200147A1 - Procedimiento para la preparacion de un agente para la de- sulfuracion de masas fundidas metalicas - Google Patents

Procedimiento para la preparacion de un agente para la de- sulfuracion de masas fundidas metalicas

Info

Publication number
ES8200147A1
ES8200147A1 ES497686A ES497686A ES8200147A1 ES 8200147 A1 ES8200147 A1 ES 8200147A1 ES 497686 A ES497686 A ES 497686A ES 497686 A ES497686 A ES 497686A ES 8200147 A1 ES8200147 A1 ES 8200147A1
Authority
ES
Spain
Prior art keywords
desulphurising
composition
production
agents
cao
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
Application number
ES497686A
Other languages
English (en)
Other versions
ES497686A0 (es
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Krupp Stahl AG
Hoechst AG
Original Assignee
Krupp Stahl AG
Hoechst AG
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 DE19792952761 external-priority patent/DE2952761A1/de
Priority claimed from DE19803008950 external-priority patent/DE3008950C2/de
Application filed by Krupp Stahl AG, Hoechst AG filed Critical Krupp Stahl AG
Publication of ES497686A0 publication Critical patent/ES497686A0/es
Publication of ES8200147A1 publication Critical patent/ES8200147A1/es
Expired legal-status Critical Current

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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/064—Dephosphorising; Desulfurising
    • C21C7/0645—Agents used for dephosphorising or desulfurising
    • 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
    • C21C1/025—Agents used for dephosphorising or desulfurising

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Lubricants (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

PROCEDIMIENTO PARA LA PREPARACION DE UN AGENTE PARA LA DESULFURACION DE MASAS FUNDIDAS METALICAS. SU OBJETO ES OBTENER UN MAYOR APROVECHAMIENTO Y RENTABILIDAD DE LOS DESULFURANTES A BASE DE CAC2-CAO. CONSISTE EN HIDRATAR LA MEZCLA DE CRISTALES DE CAC2-CAO DURANTE SU MOLIENDA, O HIDRATAR PARCIALMENTE EL CAO EN EL GRANO MOLIDO ACABADO. PARA LA PREPARACION DEL PRODUCTO FINAL SE INCORPORA A UNA MASA FUNDIDA DE CARBURO DE CALCIO, CON UN CONTENIDO EN OXIDO DE CALCIO HASTA EL 45 POR 100, OXIDO DE CALCIO FINAMENTE DIVIDIDO, EN UN EXCESO DE 3-15 POR 100 EN PESO REFERIDO AL PRODUCTO FINAL; LUEGO SE ENFRIA LA MEZCLA OBTENIDA CON SOLIDIFICACION A 350-450 C Y SE TRITURA A TAMAÑOS DE GRANO MENORES DE 150 MM.; SE SEPARA DEL PRODUCTO REMANENTE LA PORCION DE TAMAÑO MENOR DE 4 MM. Y SE DESMENUZA, EN PRESENCIA DE AIRE O NITROGENO, A UNA TEMPERATURA INFERIOR A 100 C, HASTA TAMAÑOS MENORES DE 10 MM. APLICACION EN LA DESULFURACION DE MASAS FUNDIDAS DE ACERO Y ARRABIO.
ES497686A 1979-12-29 1980-12-12 Procedimiento para la preparacion de un agente para la de- sulfuracion de masas fundidas metalicas Expired ES8200147A1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792952761 DE2952761A1 (de) 1979-12-29 1979-12-29 Entschwefelungsmittel fuer roheisen- und stahlschmelzen sowie ein verfahren zu ihrer herstellung
DE19803008950 DE3008950C2 (de) 1980-03-08 1980-03-08 Entschwefelungsmittel und Verfahren zu seiner Herstellung

Publications (2)

Publication Number Publication Date
ES497686A0 ES497686A0 (es) 1981-11-01
ES8200147A1 true ES8200147A1 (es) 1981-11-01

Family

ID=25782701

Family Applications (1)

Application Number Title Priority Date Filing Date
ES497686A Expired ES8200147A1 (es) 1979-12-29 1980-12-12 Procedimiento para la preparacion de un agente para la de- sulfuracion de masas fundidas metalicas

Country Status (12)

Country Link
US (1) US4358312A (es)
EP (1) EP0031552B1 (es)
AU (1) AU532988B2 (es)
BR (1) BR8008513A (es)
CA (1) CA1154596A (es)
DD (1) DD155528A5 (es)
DE (1) DE3069681D1 (es)
DK (1) DK151570C (es)
ES (1) ES8200147A1 (es)
MX (1) MX154953A (es)
NO (1) NO153499C (es)
PL (1) PL125943B1 (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3110569A1 (de) * 1981-03-18 1982-12-30 Skw Trostberg Ag, 8223 Trostberg Verfahren zur verhinderung des ueberschaeumens beim frischen von roheisen sowie zur erniedrigung des phosphorgehaltes, mittel und vorrichtung zur durchfuehrung des verfahrens
DE3111509A1 (de) * 1981-03-24 1982-10-07 Hoechst Ag, 6000 Frankfurt Verfahren zur herstellung von entschwefelungsmitteln fuer roheisen- oder stahlschmelzen
DE3111510A1 (de) * 1981-03-24 1982-10-07 Hoechst Ag, 6000 Frankfurt Entschwefelungsgemisch und verfahren zu seiner herstellung
US4572737A (en) * 1984-06-27 1986-02-25 The Boc Group, Inc. Agents for the removal of impurities from a molten metal and a process for producing same
DE3908071A1 (de) * 1989-03-13 1990-09-20 Hoechst Ag Mittel und verfahren zum entschwefeln von metallschmelzen
DE4242328C2 (de) * 1992-12-15 1995-06-08 Alfred Dipl Ing Dr Freissmuth Mittel zur Entschwefelung, Entphosphorung, Entsilicierung und Entstickung von Roheisen- und Gußeisenschmelzen
PL213251B1 (pl) 2009-02-02 2013-02-28 Akad Gorniczo Hutnicza Sposób wytwarzania mieszanki zuzlotwórczej dla pozapiecowej rafinacji stali w kadzi lub w piecu kadziowym

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1005163A (en) * 1963-08-10 1965-09-22 British Cast Iron Res Ass Improvements in the manufacture of inoculants for cast irons
CH428820A (fr) * 1963-12-12 1967-01-31 Tech Entwicklung Und Verwertun Produit d'affinage de l'acier
US3197306A (en) * 1964-08-31 1965-07-27 Dow Chemical Co Method for treating ferrous metals
DE1758250B1 (de) * 1968-04-29 1971-10-28 Sueddeutsche Kalkstickstoff Mittel zum Entschwefeln von Eisenschmelzen
US3716352A (en) * 1969-10-24 1973-02-13 Kawasaki Steel Co Sintered desulfurizer for off-furnace use
DE2252795C3 (de) * 1972-10-27 1982-09-09 Skw Trostberg Ag, 8223 Trostberg Entschwefelungsmittel für Roheisen- und Ferrolegierungsschmelzen
DE2326539C3 (de) * 1973-05-24 1975-11-13 Sueddeutsche Kalkstickstoff-Werke Ag, 8223 Trostberg Verfahren zur Herstellung eines Entschwefelungsgemisches für Eisenschmelzen aus Calciumcarbid und mindestens einem wasserhaltigen Stoff
DE2527156B2 (de) * 1975-06-18 1980-09-04 Thyssen Niederrhein Ag Huetten- Und Walzwerke, 4200 Oberhausen Verfahren zur Vorbehandlung einer Stahlschmelze beim Stranggießen
JPS605643B2 (ja) * 1975-11-14 1985-02-13 電気化学工業株式会社 溶銑脱硫剤の製法
JPS6035407B2 (ja) * 1978-05-31 1985-08-14 電気化学工業株式会社 溶銑用脱硫剤およびその製法
DE2919324A1 (de) * 1979-05-14 1980-12-04 Hoechst Ag Entschweflungsmittel fuer roheisen- und stahlschmelzen sowie ein verfahren zu ihrer herstellung
DE2952686A1 (de) * 1979-12-29 1981-07-02 Hoechst Ag, 6230 Frankfurt Verfahren zur herstellung von entschwefelungsmitteln fuer roheisen- oder stahlschmelzen

Also Published As

Publication number Publication date
ES497686A0 (es) 1981-11-01
PL228753A1 (es) 1981-09-04
DK151570B (da) 1987-12-14
NO153499C (no) 1986-04-02
AU6585380A (en) 1981-07-09
EP0031552B1 (de) 1984-11-21
EP0031552A1 (de) 1981-07-08
NO803923L (no) 1981-06-30
MX154953A (es) 1988-01-14
CA1154596A (en) 1983-10-04
DD155528A5 (de) 1982-06-16
US4358312A (en) 1982-11-09
DK550980A (da) 1981-06-30
AU532988B2 (en) 1983-10-20
PL125943B1 (en) 1983-06-30
DE3069681D1 (en) 1985-01-03
DK151570C (da) 1988-06-06
NO153499B (no) 1985-12-23
BR8008513A (pt) 1981-07-21

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Legal Events

Date Code Title Description
MM4A Patent lapsed

Effective date: 19960506