JPS5544529A - Manganese enriching method of hot-metal - Google Patents

Manganese enriching method of hot-metal

Info

Publication number
JPS5544529A
JPS5544529A JP11658178A JP11658178A JPS5544529A JP S5544529 A JPS5544529 A JP S5544529A JP 11658178 A JP11658178 A JP 11658178A JP 11658178 A JP11658178 A JP 11658178A JP S5544529 A JPS5544529 A JP S5544529A
Authority
JP
Japan
Prior art keywords
metal
hot
slag
ores
content
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
JP11658178A
Other languages
Japanese (ja)
Other versions
JPS6027721B2 (en
Inventor
Kunihisa Sato
Tatsuyuki Kubota
Keiji Arima
Shinichi Jiyouki
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP11658178A priority Critical patent/JPS6027721B2/en
Publication of JPS5544529A publication Critical patent/JPS5544529A/en
Publication of JPS6027721B2 publication Critical patent/JPS6027721B2/en
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
    • C21C1/00—Refining of pig-iron; Cast iron

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

PURPOSE:To enrich Mn content in hot-metal and increase Si content at a low cost, by adding Mn ores to hot-metal discharged from blast furnace, and adjusting the basicity of molten slag. CONSTITUTION:Mn ores are added to molten blast furnace metal in a hot-metal trough or an agitating vessel. Fe2O3, FeO, MnO, etc. in the ores are reduced by Si in the hot-metal to become Fe and Mn, so that the Mn content in the hot-metal is increased. At the same time, Si is oxidized to SiO2 to turn into slag, thereby decreasing in quantity. When making a steel by oxygen blowing of this hot-metal in an inverter, Si as heat source decreases, but the quantity of SiO2 increasing in the inverter slag is small, so that the required amount of CaO slag making agent may be small, without risk of damaging the basic refractory lining. In this case, CaO is added to the molten slag on the hot-metal, and the basicity is adjusted to 1.0-2.0, and the reducing rate of MnO in the Mn ores may be increased. Since expensive ferro-alloy such as Fe-Mn in not used, the hot-metal may be enriched in Mn at a low cost.
JP11658178A 1978-09-25 1978-09-25 Manganese enrichment method for hot metal Expired JPS6027721B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11658178A JPS6027721B2 (en) 1978-09-25 1978-09-25 Manganese enrichment method for hot metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11658178A JPS6027721B2 (en) 1978-09-25 1978-09-25 Manganese enrichment method for hot metal

Publications (2)

Publication Number Publication Date
JPS5544529A true JPS5544529A (en) 1980-03-28
JPS6027721B2 JPS6027721B2 (en) 1985-07-01

Family

ID=14690660

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11658178A Expired JPS6027721B2 (en) 1978-09-25 1978-09-25 Manganese enrichment method for hot metal

Country Status (1)

Country Link
JP (1) JPS6027721B2 (en)

Also Published As

Publication number Publication date
JPS6027721B2 (en) 1985-07-01

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