FR2392118A1 - Exothermic acid slag-forming mixt. for refining tapped steel - contg. perlite or fluorspar to increase combustion - Google Patents

Exothermic acid slag-forming mixt. for refining tapped steel - contg. perlite or fluorspar to increase combustion

Info

Publication number
FR2392118A1
FR2392118A1 FR7715755A FR7715755A FR2392118A1 FR 2392118 A1 FR2392118 A1 FR 2392118A1 FR 7715755 A FR7715755 A FR 7715755A FR 7715755 A FR7715755 A FR 7715755A FR 2392118 A1 FR2392118 A1 FR 2392118A1
Authority
FR
France
Prior art keywords
fluorspar
contg
mixt
perlite
component
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.)
Granted
Application number
FR7715755A
Other languages
French (fr)
Other versions
FR2392118B1 (en
Inventor
L I Krupman
J G Yaroslavtsev
A E Sochnev
J P Shamil
A I Khitrik
G I Antipenko
J G Smetanin
A N Samsonov
V M Ljudkovsky
L M Pokrass
A A Kurdjukov
A M Ofengenden
G G Zhitnik
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.)
DO NII CHERNOJ METALLURGII
Original Assignee
DO NII CHERNOJ METALLURGII
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 DO NII CHERNOJ METALLURGII filed Critical DO NII CHERNOJ METALLURGII
Priority to FR7715755A priority Critical patent/FR2392118A1/en
Publication of FR2392118A1 publication Critical patent/FR2392118A1/en
Application granted granted Critical
Publication of FR2392118B1 publication Critical patent/FR2392118B1/fr
Granted 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
    • C21C7/076—Use of slags or fluxes as treating agents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Ceramic Products (AREA)

Abstract

An exothermic slag-forming mixt. contains (by wt.) 0.1-15% Al powder, 24-40 NaNO3, 5-15% CaO, 0.1-20% Si-coating component, 5-15% expanded perlite as fluorspar with the balance being a SiO2-contg. component. Suitably the Si-contg. component is 0.1-6% of powdered Si, the other components then being 9-15% Al powder, 28-30% Na2NO3, 5-15% CaO, 5-15% expanded perlite or fluorspar and balance silica-contg. component. The compsn. produces a molten acid slag for refining tapped steel from a high-prodn. basic open hearth furnace or converter. It is esp. useful for ball-bearing or stainless steels. The presence of perlite or fluorspar in the mixt. increases the combustion rate and thereby facilitates melting without the considerable cost increase involved in achieving the same result by increasing Al content.
FR7715755A 1977-05-23 1977-05-23 Exothermic acid slag-forming mixt. for refining tapped steel - contg. perlite or fluorspar to increase combustion Granted FR2392118A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7715755A FR2392118A1 (en) 1977-05-23 1977-05-23 Exothermic acid slag-forming mixt. for refining tapped steel - contg. perlite or fluorspar to increase combustion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7715755A FR2392118A1 (en) 1977-05-23 1977-05-23 Exothermic acid slag-forming mixt. for refining tapped steel - contg. perlite or fluorspar to increase combustion

Publications (2)

Publication Number Publication Date
FR2392118A1 true FR2392118A1 (en) 1978-12-22
FR2392118B1 FR2392118B1 (en) 1980-01-18

Family

ID=9191183

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7715755A Granted FR2392118A1 (en) 1977-05-23 1977-05-23 Exothermic acid slag-forming mixt. for refining tapped steel - contg. perlite or fluorspar to increase combustion

Country Status (1)

Country Link
FR (1) FR2392118A1 (en)

Also Published As

Publication number Publication date
FR2392118B1 (en) 1980-01-18

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Legal Events

Date Code Title Description
ST Notification of lapse