ISSN 2594-357X
Title
Authorship
DOI
Downloads
Abstract
JFE Steel Corporation developed a technology for injection of hydrogen-based gas fuel in sintering machines, "Super-SINTERTM (Secondary-fuel Injection Technology for Energy Reduction)", which makes it possible to greatly reduce CO2 emissions in the sintering process, and successfully applied this technology to a commercial sinter plant for the first time in the world. This equipment was put into commercial operation in December 2010~August 2011 at West Japan Works(Kurashiki District),and in July 2011,and has continued to perform smoothly up to the present. In ordinary sintering process, after coke breeze is mixed with iron ore and limestone, raw materials are charged and sintered in sintering machine. To product high strength and reducibility sintered ore, the temperature in the sintering bed is kept between 1,200 degrees and 1,400 degrees during sintering. In the temperature zone below 1,200 degrees, the strength of sintered ore decrease because raw materials are not melted enough. In the temperature zone over 1,400 degrees, the strength and reducibility decrease by increase of glassy silicate. With "Super-SINTER" technology, it is possible to extend the period in the optimum temperature by injecting a hydrogen-based gas fuel from the upper side of the charged raw materials as a partial substitute for coke breeze. As the result, the energy efficiency of the sintering process is greatly improved.
JFE Steel Corporation developed a technology for injection of hydrogen-based gas fuel in sintering machines, "Super-SINTERTM (Secondary-fuel Injection Technology for Energy Reduction)", which makes it possible to greatly reduce CO2 emissions in the sintering process, and successfully applied this technology to a commercial sinter plant for the first time in the world. This equipment was put into commercial operation in December 2010~August 2011 at West Japan Works(Kurashiki District),and in July 2011,and has continued to perform smoothly up to the present. In ordinary sintering process, after coke breeze is mixed with iron ore and limestone, raw materials are charged and sintered in sintering machine. To product high strength and reducibility sintered ore, the temperature in the sintering bed is kept between 1,200 degrees and 1,400 degrees during sintering. In the temperature zone below 1,200 degrees, the strength of sintered ore decrease because raw materials are not melted enough. In the temperature zone over 1,400 degrees, the strength and reducibility decrease by increase of glassy silicate. With "Super-SINTER" technology, it is possible to extend the period in the optimum temperature by injecting a hydrogen-based gas fuel from the upper side of the charged raw materials as a partial substitute for coke breeze. As the result, the energy efficiency of the sintering process is greatly improved.
Keywords
Sintering; Gas; Fuel; Injection.
Sintering; Gas; Fuel; Injection.
How to refer
Akiyama, Yoshikazu;
Oyama, Nobuyuki;
Iwami, Yuji;
Sato, Michitaka;
Takeda, Kanji;
Takigawa, Yohei;
Shimizu., Masakata.
DEVELOPMENT OF GAS FUEL INJECTION TECHNOLOGY
IN IRON ORE SINTERING PROCESS
REDUCTION OF CO2 EMISSIONS WITH GAS FUEL INJECTION TECHNOLOGY IN
THE SINTERING MACHINES
,
p. 1043-1055.
In: 42º Seminário de Redução de Minério de Ferro e Matérias-primas / 13º Seminário Brasileiro de Minério de Ferro / 6th International Congress on the Science and Technology of Ironmaking,
Rio de Jabeiro,
2012.
ISSN: 2594-357X
, DOI 10.5151/2594-357X-22194
