FR2440223A1 - Removing sulphur oxide(s) from hot waste gas - obtd. in mfg. reduced iron pellets from dust produced in iron and steel works and contg. large amt. of sulphur - Google Patents

Removing sulphur oxide(s) from hot waste gas - obtd. in mfg. reduced iron pellets from dust produced in iron and steel works and contg. large amt. of sulphur

Info

Publication number
FR2440223A1
FR2440223A1 FR7926077A FR7926077A FR2440223A1 FR 2440223 A1 FR2440223 A1 FR 2440223A1 FR 7926077 A FR7926077 A FR 7926077A FR 7926077 A FR7926077 A FR 7926077A FR 2440223 A1 FR2440223 A1 FR 2440223A1
Authority
FR
France
Prior art keywords
pellets
iron
obtd
sulphur
contg
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
FR7926077A
Other languages
French (fr)
Other versions
FR2440223B1 (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.)
JFE Engineering Corp
Original Assignee
Nippon Kokan 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 Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Publication of FR2440223A1 publication Critical patent/FR2440223A1/en
Application granted granted Critical
Publication of FR2440223B1 publication Critical patent/FR2440223B1/fr
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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/11—Removing sulfur, phosphorus or arsenic other than by roasting
    • 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
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

Crude pellets contg. iron and/or iron ore are fed via a grate furnace through drying, preheating and hardening zones, and then through a rotary drum furance. The pellets consists mainly of dust obtd. from iron and steel mfg. furnaces, and ore dust, both with an appreciable content of SOx. The pellets are reduced in the rotary drum furnace; and hot gases from the drum flow in counter current to the pellets in the grate furnace. A granular desulphurising agent is added to pellets at the inlet end of the travelling grate and is heated in the three grate zones so it absorbs the SOx. The agent is pref. limestone, dolomite, CaO, and/or calcined dolomite, of size 5-25 mm. The pellets are made from dust which includes that obtd. from blast furnaces or converters.
FR7926077A 1978-11-02 1979-10-19 Removing sulphur oxide(s) from hot waste gas - obtd. in mfg. reduced iron pellets from dust produced in iron and steel works and contg. large amt. of sulphur Granted FR2440223A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13447278A JPS5562129A (en) 1978-11-02 1978-11-02 Removing method for sox in exhaust gas in reduced pellet manufacturing process

Publications (2)

Publication Number Publication Date
FR2440223A1 true FR2440223A1 (en) 1980-05-30
FR2440223B1 FR2440223B1 (en) 1985-02-08

Family

ID=15129110

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7926077A Granted FR2440223A1 (en) 1978-11-02 1979-10-19 Removing sulphur oxide(s) from hot waste gas - obtd. in mfg. reduced iron pellets from dust produced in iron and steel works and contg. large amt. of sulphur

Country Status (5)

Country Link
JP (1) JPS5562129A (en)
AU (1) AU520581B2 (en)
CA (1) CA1135060A (en)
DE (1) DE2944216C2 (en)
FR (1) FR2440223A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1009989A3 (en) * 1995-07-10 1997-11-04 Centre Rech Metallurgique Sulphur elimination method from iron ore agglomeration fumes

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5100314A (en) * 1989-07-14 1992-03-31 Svedala Industries, Inc. Apparatus and process for direct reduction of materials in a kiln
US5076838A (en) * 1989-07-14 1991-12-31 Svedala Industries, Inc. Process for direct reduction of materials in a kiln
CN110420558A (en) * 2019-08-27 2019-11-08 东方电气集团东方锅炉股份有限公司 A kind of denitrating system for grate-kiln pelletizing equipment
CN110975497B (en) * 2019-12-25 2021-09-03 中冶京诚工程技术有限公司 Method for eliminating white matter of blast furnace slag bottom filtering system
CN112023656B (en) * 2020-08-26 2021-03-30 山东国舜建设集团有限公司 Semi-flue gas SNCR + SCR denitration system and process of pellet non-heating heat exchange device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE937277C (en) * 1953-01-03 1955-12-29 Metallgesellschaft Ag Method and device for treating solid substances with hot gases on suction devices
GB933353A (en) * 1960-12-08 1963-08-08 Consett Iron Company Ltd Improved metallurgical apparatus
US3166403A (en) * 1960-02-24 1965-01-19 Inland Steel Co Sintering process
DE1936530A1 (en) * 1969-07-18 1971-01-28 Metallgesellschaft Ag Thermally treating iron oxide-containing ore - on travelling grates
FR2254647A1 (en) * 1973-12-17 1975-07-11 Nippon Kokan Kk

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5319531A (en) * 1976-08-05 1978-02-22 Matsushita Electric Ind Co Ltd Method of producing lead battery positive plate lattice

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE937277C (en) * 1953-01-03 1955-12-29 Metallgesellschaft Ag Method and device for treating solid substances with hot gases on suction devices
US3166403A (en) * 1960-02-24 1965-01-19 Inland Steel Co Sintering process
GB933353A (en) * 1960-12-08 1963-08-08 Consett Iron Company Ltd Improved metallurgical apparatus
DE1936530A1 (en) * 1969-07-18 1971-01-28 Metallgesellschaft Ag Thermally treating iron oxide-containing ore - on travelling grates
FR2254647A1 (en) * 1973-12-17 1975-07-11 Nippon Kokan Kk

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1009989A3 (en) * 1995-07-10 1997-11-04 Centre Rech Metallurgique Sulphur elimination method from iron ore agglomeration fumes

Also Published As

Publication number Publication date
AU5139679A (en) 1980-05-22
DE2944216C2 (en) 1983-04-07
AU520581B2 (en) 1982-02-11
CA1135060A (en) 1982-11-09
FR2440223B1 (en) 1985-02-08
JPS5562129A (en) 1980-05-10
DE2944216A1 (en) 1980-05-14

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Legal Events

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