JPS5482304A - Nox decreasing method in manufacture of sintered ore - Google Patents

Nox decreasing method in manufacture of sintered ore

Info

Publication number
JPS5482304A
JPS5482304A JP15110677A JP15110677A JPS5482304A JP S5482304 A JPS5482304 A JP S5482304A JP 15110677 A JP15110677 A JP 15110677A JP 15110677 A JP15110677 A JP 15110677A JP S5482304 A JPS5482304 A JP S5482304A
Authority
JP
Japan
Prior art keywords
exhaust gas
nox
sintering
sox
pallet
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.)
Pending
Application number
JP15110677A
Other languages
Japanese (ja)
Inventor
Yatsuhiro Kawayoshi
Masao Watanabe
Kazuo Omichi
Hiromichi Hokkezu
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
Sumitomo Metal 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 Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP15110677A priority Critical patent/JPS5482304A/en
Publication of JPS5482304A publication Critical patent/JPS5482304A/en
Pending legal-status Critical Current

Links

Classifications

    • Y02W30/54—

Landscapes

  • Manufacture And Refinement Of Metals (AREA)

Abstract

PURPOSE: To reduce the content of not only NOx but SOx in exhaust gas in sintering of fine iron ore by mixing a NH3 forming substance into sintering rawmaterials; reducing NOx formed to N; recycling exhaust gas from the rear part of a moving line to the front part; and treating final exhaust gas with an alkali soln.
CONSTITUTION: Grate protecting bed ore is mounted on the circulating pellet of a sintering machine, and mixed raw material of iron ore and coke is charged onto the bed ore. At this time, urea or ammonium salt which forms NH3 by heating is added under the bed ore or the raw material. Sintering raw material 4 on the pallet is fired with firing furnace 6 and sintered while being moved to the right. NOx formed in sintering exhaust gas are reduced to harmless N with NH3 formed by decomposition of the urea, etc. Since a little NOx and SOx are contained in exhaust gas from wind boxes GWM at the rear part of the pallet, the gas is recovered and recycled to the front part of the pallet. Finally, exhaust gas is sprayed with water or an alkali soln. to remove residual NOx and SOx by absorption.
COPYRIGHT: (C)1979,JPO&Japio
JP15110677A 1977-12-14 1977-12-14 Nox decreasing method in manufacture of sintered ore Pending JPS5482304A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15110677A JPS5482304A (en) 1977-12-14 1977-12-14 Nox decreasing method in manufacture of sintered ore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15110677A JPS5482304A (en) 1977-12-14 1977-12-14 Nox decreasing method in manufacture of sintered ore

Publications (1)

Publication Number Publication Date
JPS5482304A true JPS5482304A (en) 1979-06-30

Family

ID=15511471

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15110677A Pending JPS5482304A (en) 1977-12-14 1977-12-14 Nox decreasing method in manufacture of sintered ore

Country Status (1)

Country Link
JP (1) JPS5482304A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2324789A (en) * 1997-04-30 1998-11-04 British Steel Plc Sintering iron ore
EP0992594A1 (en) * 1998-10-08 2000-04-12 Sidmar N.V. Process of reducing dioxine and furan emissions in iron ore agglomeration installations
KR20010011171A (en) * 1999-07-26 2001-02-15 이구택 Manufacturing method of sinter ore with reducing sulfur-oxide in discharged gas
KR100433254B1 (en) * 1999-12-30 2004-05-27 주식회사 포스코 Method for making sinter mix for the sintering process
KR100994056B1 (en) * 2008-02-27 2010-11-11 재단법인 포항산업과학연구원 METHOD FOR REMOVING SOx IN THE SINTER FLUE GAS
CN106282542A (en) * 2015-05-13 2017-01-04 上海梅山钢铁股份有限公司 A kind of collaborative discharge-reducing method of sintering process multiple pollutant
CN107166971A (en) * 2017-06-13 2017-09-15 武汉钢铁有限公司 Sinter the low NO of flue gas recirculationxDischarge technology
CN112569758A (en) * 2019-09-27 2021-03-30 江苏集萃冶金技术研究院有限公司 Online denitration process for sintering flue gas
CN112569759A (en) * 2019-09-27 2021-03-30 江苏集萃冶金技术研究院有限公司 Sintering process based on coupling of flue gas pollutant emission reduction through sintering flue gas quality-divided circulation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49123403A (en) * 1973-03-31 1974-11-26
JPS5018302A (en) * 1972-10-25 1975-02-26
JPS50101275A (en) * 1974-01-14 1975-08-11

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5018302A (en) * 1972-10-25 1975-02-26
JPS49123403A (en) * 1973-03-31 1974-11-26
JPS50101275A (en) * 1974-01-14 1975-08-11

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2324789A (en) * 1997-04-30 1998-11-04 British Steel Plc Sintering iron ore
EP0992594A1 (en) * 1998-10-08 2000-04-12 Sidmar N.V. Process of reducing dioxine and furan emissions in iron ore agglomeration installations
KR20010011171A (en) * 1999-07-26 2001-02-15 이구택 Manufacturing method of sinter ore with reducing sulfur-oxide in discharged gas
KR100433254B1 (en) * 1999-12-30 2004-05-27 주식회사 포스코 Method for making sinter mix for the sintering process
KR100994056B1 (en) * 2008-02-27 2010-11-11 재단법인 포항산업과학연구원 METHOD FOR REMOVING SOx IN THE SINTER FLUE GAS
CN106282542A (en) * 2015-05-13 2017-01-04 上海梅山钢铁股份有限公司 A kind of collaborative discharge-reducing method of sintering process multiple pollutant
CN107166971A (en) * 2017-06-13 2017-09-15 武汉钢铁有限公司 Sinter the low NO of flue gas recirculationxDischarge technology
CN107166971B (en) * 2017-06-13 2019-04-19 武汉钢铁有限公司 Sintering flue gas recycles low NOxDischarge technology
CN112569758A (en) * 2019-09-27 2021-03-30 江苏集萃冶金技术研究院有限公司 Online denitration process for sintering flue gas
CN112569759A (en) * 2019-09-27 2021-03-30 江苏集萃冶金技术研究院有限公司 Sintering process based on coupling of flue gas pollutant emission reduction through sintering flue gas quality-divided circulation
CN112569758B (en) * 2019-09-27 2022-08-23 江苏集萃冶金技术研究院有限公司 Online denitration process for sintering flue gas
CN112569759B (en) * 2019-09-27 2022-09-30 江苏集萃冶金技术研究院有限公司 Sintering process based on coupling of flue gas pollutant emission reduction through sintering flue gas quality-divided circulation

Similar Documents

Publication Publication Date Title
IE53152B1 (en) Method of feeding an additive into a stream of reaction gas
JPS5482304A (en) Nox decreasing method in manufacture of sintered ore
JPS5420904A (en) Sintering equipment with addition quick lime and circulation of exhaust gas
JPS5211105A (en) Denitration process for exhaust gases of iron ore pelletizing
JPS5554023A (en) Harmful gas removal apparatus
JPS5271306A (en) Charging of raw material to be sintered
JPS5562129A (en) Removing method for sox in exhaust gas in reduced pellet manufacturing process
JPS5581722A (en) Exhaust smoke treating method
JPS51119181A (en) Dry treatment apparatus of garbage furnace residue
JPS53118202A (en) Method of minimizing formation of nitrogen oxides in sintering system
JPS5441565A (en) Method of removing hcl generated in stoker system waste incinerator
JPS5282603A (en) Low no# sintering operation
JPS5442868A (en) Method of removing nitrogen oxide formed from fluid layer type waste matter incinerator
JPS5457406A (en) Compounding method for raw materials to be sintered
JPS5439222A (en) Process and apparatus of recycling exhaust gas
CN113564349A (en) Method for controlling dioxin in process of sintering and co-processing waste incineration fly ash
JPS5266873A (en) Process for treating combustion gas
JPS5428274A (en) Treating method for exhaust combustion gas
JPS5280203A (en) Preparation of sintered ore of low no
JPS548103A (en) Decreasing method for nitrogen oxides cischarged from sintering machine
SU699027A2 (en) Method of producijg fluxed raw material
JPS5597433A (en) Preparation of sintered ore
JPS5684427A (en) Production of sintered ore
JPS5591905A (en) Using method for reducing agent in rotary kiln
JPS5517071A (en) Melting treatment of sludge