FR2096499A2 - Blast furnace operating technique - Google Patents

Blast furnace operating technique

Info

Publication number
FR2096499A2
FR2096499A2 FR7117878A FR7117878A FR2096499A2 FR 2096499 A2 FR2096499 A2 FR 2096499A2 FR 7117878 A FR7117878 A FR 7117878A FR 7117878 A FR7117878 A FR 7117878A FR 2096499 A2 FR2096499 A2 FR 2096499A2
Authority
FR
France
Prior art keywords
temp
furnace
blast furnace
decompsn
enrichment
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
FR7117878A
Other languages
French (fr)
Other versions
FR2096499B2 (en
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.)
RHEINLANDER PAUL DT
Original Assignee
RHEINLANDER PAUL DT
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 RHEINLANDER PAUL DT filed Critical RHEINLANDER PAUL DT
Publication of FR2096499A2 publication Critical patent/FR2096499A2/en
Application granted granted Critical
Publication of FR2096499B2 publication Critical patent/FR2096499B2/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Manufacture Of Iron (AREA)

Abstract

The blast furnace is operated with a main coke feed and a supplementary fuel burned outside the furnace, the decompsn. products being blown into the furnace. The reduction in furnace temp. is compensated by increasing the blow temp. or by O2 enrichment. Operating conditions are changed from one equilibrium state to another, which involves a large decrease in the amt. of indirect reduction which occurs. The heat saved is used to raise the temp. of the added decompsn. products, so that when the second equilibrium is attained, the enrichment or blow temp. increase can be partially or completely obviated.
FR7117878A 1970-06-26 1971-05-18 Blast furnace operating technique Granted FR2096499A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702031560 DE2031560A1 (en) 1970-06-26 1970-06-26 Process for operating blast furnaces with coke and additional fuels

Publications (2)

Publication Number Publication Date
FR2096499A2 true FR2096499A2 (en) 1972-02-18
FR2096499B2 FR2096499B2 (en) 1974-10-18

Family

ID=5774989

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7117878A Granted FR2096499A2 (en) 1970-06-26 1971-05-18 Blast furnace operating technique

Country Status (5)

Country Link
BE (1) BE767261R (en)
DE (1) DE2031560A1 (en)
FR (1) FR2096499A2 (en)
IT (1) IT983137B (en)
NL (1) NL7106749A (en)

Also Published As

Publication number Publication date
BE767261R (en) 1971-10-18
IT983137B (en) 1974-10-31
DE2031560A1 (en) 1971-12-30
NL7106749A (en) 1971-12-28
FR2096499B2 (en) 1974-10-18

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