JPS57149406A - Manufacture of reduced iron in rotary kiln - Google Patents

Manufacture of reduced iron in rotary kiln

Info

Publication number
JPS57149406A
JPS57149406A JP3361681A JP3361681A JPS57149406A JP S57149406 A JPS57149406 A JP S57149406A JP 3361681 A JP3361681 A JP 3361681A JP 3361681 A JP3361681 A JP 3361681A JP S57149406 A JPS57149406 A JP S57149406A
Authority
JP
Japan
Prior art keywords
rotary kiln
reducing agent
reduced iron
kiln
manufacture
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
JP3361681A
Other languages
Japanese (ja)
Other versions
JPH0235002B2 (en
Inventor
Shinichi Kuromame
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.)
Sumitomo Heavy Industries Ltd
Original Assignee
Sumitomo Heavy Industries Ltd
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 Sumitomo Heavy Industries Ltd filed Critical Sumitomo Heavy Industries Ltd
Priority to JP3361681A priority Critical patent/JPS57149406A/en
Priority to US06/354,337 priority patent/US4409022A/en
Priority to DE19823208477 priority patent/DE3208477A1/en
Publication of JPS57149406A publication Critical patent/JPS57149406A/en
Publication of JPH0235002B2 publication Critical patent/JPH0235002B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/08—Making spongy iron or liquid steel, by direct processes in rotary furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)

Abstract

PURPOSE:To reduce the sulfur content of reduced iron by maintaining a high- temperature reductive atmosphere for a fixed period of time even after the ending of reductive reaction while charging a reducing agent even from the outlet side of rotary kiln in the manufacture of reduced iron in the rotary kiln. CONSTITUTION:Powdered iron ore and a binder are pelletized together in a movable grading furnace 1, and then charged, together with a solid reducing agent 3 and a desulfurizer 4, into a rotary kiln 2. Even from the outlet of the rotary kiln, a powdered solid reducing agent 8 containing 3% or more volatile matters is blown into the kiln in an amout corresponding to 20% or more of the amount of the reducing agent to be charged from the inlet of the kiln, together with a carrier gas, by a blower 7 in such a way that the metallic transition of the iron ore pellets can reach 80% or more. A retaining zone for desulfurization is provided in a high-temperature and high-reducing atmosphere of outlet side portion corresponding to about 1/10 of the whole length of the rotary kiln, by which the S content of reduced iron is decreased to 0.03% or less.
JP3361681A 1981-03-09 1981-03-09 Manufacture of reduced iron in rotary kiln Granted JPS57149406A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP3361681A JPS57149406A (en) 1981-03-09 1981-03-09 Manufacture of reduced iron in rotary kiln
US06/354,337 US4409022A (en) 1981-03-09 1982-03-03 Method of producing low-sulfur, reduced, iron ore pellets
DE19823208477 DE3208477A1 (en) 1981-03-09 1982-03-09 METHOD FOR REDUCING IRON

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3361681A JPS57149406A (en) 1981-03-09 1981-03-09 Manufacture of reduced iron in rotary kiln

Publications (2)

Publication Number Publication Date
JPS57149406A true JPS57149406A (en) 1982-09-16
JPH0235002B2 JPH0235002B2 (en) 1990-08-08

Family

ID=12391380

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3361681A Granted JPS57149406A (en) 1981-03-09 1981-03-09 Manufacture of reduced iron in rotary kiln

Country Status (1)

Country Link
JP (1) JPS57149406A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4914601A (en) * 1972-06-06 1974-02-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4914601A (en) * 1972-06-06 1974-02-08

Also Published As

Publication number Publication date
JPH0235002B2 (en) 1990-08-08

Similar Documents

Publication Publication Date Title
ES449348A1 (en) Method of producing a partially reduced product from finely-divided metal sulphides
KR950018560A (en) How to recover zinc from zinc containing dust
GB1466188A (en) Method for disposing of iron-bearing particulate wastes
JPS537505A (en) Operating process of blast furnace
JPS57149406A (en) Manufacture of reduced iron in rotary kiln
GB2004854A (en) Waelz process for volatilizing zinc and lead from iron oxide-containing materials
DE3065393D1 (en) Process for the direct reduction in a rotary furnace of matter that contains iron oxide
GB1532969A (en) Process for the direct reduction of iron oxide-containing materials in a rotary kiln
GB1474624A (en) Process for producing metal from metal oxide pellets in a cupola vessel
JPS522807A (en) Process for treatment of blast furnace gas ashes
Volovik Desulphurization Processes with the Injection of Fluxes into the Hearth of a Blast Furnace Operating with Enriched Blast
KR830007857A (en) Direct reduction of iron oxide-containing materials
JPS5240415A (en) Process for preventing generation of sulfuric acid mist in sintering u nit for iron ore
JPS5970704A (en) Desulfurization method in iron making process by direct reduction
Hass et al. Observations of Oriented Iron Growth During the Reduction of Iron Ores in Gases Containing Carbon Monoxide
JPS56150141A (en) Refining method for aluminum by reduction
JPS55119107A (en) Charging method of raw material for blast furnace
Mindeli et al. Ways of Speeding Up Ironmaking at the Rustavi Works
Nekrasov et al. Trial Cast in a 2000 m 3 Blast Furnace with a Reduced Proportion of Fines in the Burden
JPS5457416A (en) Melting and reducing method for iron oxide
JPS5333902A (en) Sintering operation method with low nox
JPS52120902A (en) Charging of raw material into blast furnace
Satchell Jr Metallurgical processes and apparatus
Balajee et al. Generation of Pellet Fines, Their Utilization in Sintering and the Effect of Screened Pellets on Blast Furnace Performance
CS217950B1 (en) Method of processing the dust flue from the steelmaker converting devices to the initial raw material for the production of the volatile metals