ES2140232T3 - CALCIUM CARBIDE-BASED DESULFURING BLEND. - Google Patents

CALCIUM CARBIDE-BASED DESULFURING BLEND.

Info

Publication number
ES2140232T3
ES2140232T3 ES97919467T ES97919467T ES2140232T3 ES 2140232 T3 ES2140232 T3 ES 2140232T3 ES 97919467 T ES97919467 T ES 97919467T ES 97919467 T ES97919467 T ES 97919467T ES 2140232 T3 ES2140232 T3 ES 2140232T3
Authority
ES
Spain
Prior art keywords
desulfuring
granulometry
calcium carbide
less
blend
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 - Lifetime
Application number
ES97919467T
Other languages
Spanish (es)
Inventor
Gilles Nussbaum
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.)
Ferropem SAS
Original Assignee
Pechiney Electrometallurgie SAS
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
Application filed by Pechiney Electrometallurgie SAS filed Critical Pechiney Electrometallurgie SAS
Application granted granted Critical
Publication of ES2140232T3 publication Critical patent/ES2140232T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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)

Abstract

LA INVENCION SE REFIERE A UNA MEZCLA DESULFURANTE DE LA FUNDICION REFINADA CONSTITUIDO POR AL MENOS UN 50 % (EN PESO) DE CARBURO DE CALCIO EN POLVO DE GRANULOMETRIA INFERIOR A 0,2 MM, ENTRE UN 1 Y UN 20 % DE MAGNESIO O GRANULOS DE GRANULOMETRIA INFERIOR A 0,8 MM Y ENTRE UN 5 Y UN 15 % DE ALUMINIO EN POLVO O GRANULOS DE GRANULOMETRIA INFERIOR A 0,8 MM, Y EVENTUALMENTE OTROS ADITIVOS EN POLVO COMO LA CAL, EL CARBONATO DE CALCIO, PRODUCTOS CARBONADOS, Y/O AGENTES DE REVESTIMIENTO DE LOS GRANOS, SIENDO LA CANTIDAD TOTAL DE LOS ADITIVOS DE UN 30% COMO MAXIMO. LA MEZCLA SEGUN LA INVENCION PERMITE REDUCIR LAS PERDIDAS DE HIERRO A LO LARGO DE LA DESULFURACION.THE INVENTION REFERS TO A REFINED FOUNDRY DESULFURING MIX CONSTITUTING OF AT LEAST 50% (BY WEIGHT) OF CALCIUM CARBIDE POWDER OF GRANULOMETRY LESS THAN 0.2 MM, BETWEEN 1 AND 20% OF MAGNESIUM OR GRANULES OF GRANULOMETRY LESS THAN 0.8 MM AND BETWEEN 5 AND 15% ALUMINUM POWDER OR GRANULOMETRY GRANULES LESS THAN 0.8 MM, AND EVENTUALLY OTHER POWDERED ADDITIVES LIKE CALCIUM CARBONATE, CARBON PRODUCTS, AND / OR GRAIN COATING AGENTS, THE TOTAL AMOUNT OF ADDITIVES BEING A MAXIMUM OF 30%. THE MIXTURE ACCORDING TO THE INVENTION ALLOWS TO REDUCE THE LOSS OF IRON THROUGHOUT THE DESULFURATION.

ES97919467T 1996-04-04 1997-04-02 CALCIUM CARBIDE-BASED DESULFURING BLEND. Expired - Lifetime ES2140232T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9604493A FR2747132B1 (en) 1996-04-04 1996-04-04 CALCIUM CARBIDE DESULFURING MIXTURE

Publications (1)

Publication Number Publication Date
ES2140232T3 true ES2140232T3 (en) 2000-02-16

Family

ID=9491082

Family Applications (1)

Application Number Title Priority Date Filing Date
ES97919467T Expired - Lifetime ES2140232T3 (en) 1996-04-04 1997-04-02 CALCIUM CARBIDE-BASED DESULFURING BLEND.

Country Status (14)

Country Link
EP (1) EP0891431B1 (en)
AU (1) AU2392897A (en)
BG (1) BG63215B1 (en)
CZ (1) CZ293175B6 (en)
DE (1) DE69700665T2 (en)
ES (1) ES2140232T3 (en)
FR (1) FR2747132B1 (en)
HU (1) HU222767B1 (en)
PL (1) PL183768B1 (en)
RO (1) RO117712B1 (en)
RU (1) RU2166548C2 (en)
SK (1) SK283419B6 (en)
UA (1) UA49014C2 (en)
WO (1) WO1997038142A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19857733A1 (en) * 1998-12-15 2000-06-21 Almamet Gmbh Desulfurizing agent
FR2789697B1 (en) * 1999-02-12 2001-04-06 Pechiney Electrometallurgie DESULFURIZING MIXTURE BASED ON CALCIUM CARBIDE AND / OR LIME
CN101367025B (en) * 2008-08-13 2011-07-27 陈宏� Calcium based composite catalysis dry desulfurizing agent for circulating fluidized bed boiler and preparation method thereof
BR102014017197A2 (en) * 2014-07-11 2016-02-16 Tecnosulfur Sist De Tratamento De Metais Liquidos S A desulphurant composition and its production process, packaging method and application in small pans for the production of cast irons
CN107245549B (en) * 2017-06-15 2018-12-18 王强 A kind of the efficient of electrolytic aluminium factory aluminium ash utilizes technique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE418074C (en) * 1922-03-12 1925-08-25 Wilhelm Kroll Dr Desulphurizer for iron and steel baths
DE2447918A1 (en) * 1974-10-08 1976-04-29 Gammal Tarek Prof Dr Ing El Refining of steel - by using an alloy of calcium, aluminium and magnesium free of oxide
DE2531047B2 (en) * 1975-07-11 1978-07-06 Kloeckner-Werke Ag, 4100 Duisburg Process for the desulphurization of pig iron
DE2709062A1 (en) * 1977-03-02 1978-09-07 Sueddeutsche Kalkstickstoff MEANS AND METHODS FOR DESULFURIZING METAL IRON
JPS54136516A (en) * 1978-04-14 1979-10-23 Kobe Steel Ltd Hot iron desulfurizing agent

Also Published As

Publication number Publication date
HU222767B1 (en) 2003-10-28
BG63215B1 (en) 2001-06-29
PL183768B1 (en) 2002-07-31
RO117712B1 (en) 2002-06-28
DE69700665D1 (en) 1999-11-25
FR2747132A1 (en) 1997-10-10
CZ293175B6 (en) 2004-02-18
DE69700665T2 (en) 2000-05-11
AU2392897A (en) 1997-10-29
UA49014C2 (en) 2002-09-16
BG102700A (en) 1999-03-31
CZ314798A3 (en) 1999-08-11
PL329220A1 (en) 1999-03-15
EP0891431B1 (en) 1999-10-20
HUP9902168A2 (en) 1999-11-29
SK137998A3 (en) 1999-05-07
FR2747132B1 (en) 1998-06-19
SK283419B6 (en) 2003-07-01
EP0891431A1 (en) 1999-01-20
RU2166548C2 (en) 2001-05-10
WO1997038142A1 (en) 1997-10-16
HUP9902168A3 (en) 2001-11-28

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