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首页> 外文会议>European Steel Technology and Application Days >Technology for Improvement sinter productivity and sinter strength in the sintering process by Gas Fuel and oxygen Injection Technology -Development of Gas Fuel and oxygen Injection Technology in Iron Ore Sintering
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Technology for Improvement sinter productivity and sinter strength in the sintering process by Gas Fuel and oxygen Injection Technology -Development of Gas Fuel and oxygen Injection Technology in Iron Ore Sintering

机译：通过气体燃料和氧注射技术改善烧结过程中的烧结过程中的烧结工艺技术 - 铁矿石烧结中的气体燃料和氧注射技术的开发

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摘要

JFE Steel Corporation developed a technology for injection of hydrogen-based gas fuel in sintering machines, "Super-SINTER~(TM) (Secondary-fuel Injection Technology for Energy Reduction)", which makes it possible to greatly reduce CO_2 emissions in the sintering process, and successfully applied this technology to a commercial sinter plant for the first time in the world. In ordinary sintering process, after coke breeze is mixed with iron ore and limestone, raw materials are charged and sintered in sintering machine. To produce high strength and high reducibility sintered ore, it is necessary to keep the sintering temperature between 1,200 °C and 1,400 °C during sintering. In the temperature zone below 1,200 °C, the strength of sintered ore decreases because raw materials don't melt enough. In the temperature zone over 1,400 °C, the strength and reducibility decrease by increasing glassy silicate.With "Super-SINTER~(TM)" 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, and it has been achieved to reduce CO_2 emissions.
机译：JFE Steel Corporation开发了一种用于注射烧结机中的氢气燃料的技术，“超级烧结〜（TM）（用于能量减少的二次燃料喷射技术）”，这使得可以大大减少烧结中的CO_2排放过程，并成功将这种技术应用于世界上第一次商业烧结厂。在普通烧结过程中，在焦炭微风与铁矿石和石灰石混合后，在烧结机中加入并烧结原料。为了产生高强度和高再可烧结矿石，必须在烧结期间保持烧结温度在1,200℃和1,400℃之间。在低于1,200℃的温度区，烧结矿石的强度降低，因为原料不熔化。在超过1,400℃的温度区中，通过增加玻璃硅酸盐的强度和再减少来降低。在“超级烧结〜（TM）”技术中，通过注入氢基气体燃料，可以在最佳温度下延长最佳温度从带电原料的上侧作为焦微风的部分替代品。结果，烧结过程的能量效率大大提高，已经实现了减少CO_2排放。

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