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1. 发明申请

US20140084524A1 PARTIALLY-REDUCED IRON PRODUCING APPARATUS 有权
标题翻译：部分减少铁生产设备
公开(公告)号：US20140084524A1
公开(公告)日：2014-03-27
申请号：US14032980
申请日：2013-09-20
申请人： MITSUBISHI HITACHI METALS MACHINERY, INC.
发明人： Susumu KAMIKAWA , Hideaki MIZUKI , Hideki ITO , Keiichi SATO , Khanhson PHAM
IPC分类号： F27D17/00
CPC分类号： F27D17/001 , C21B13/0053 , C21B2100/44 , C21B2100/66 , C22B1/20 , F27D17/008 , Y02P10/216
摘要： A partially-reduced iron producing apparatus includes: an exhaust gas circulating device supplying an oxygen-containing gas to raw-material pellets to be heated by ignition of raw-material pellets, the oxygen-containing gas made by circulating part of an exhaust gas by use of the heat of the ignition raw-material pellets and mixing the discharged exhaust gas with air; and a liquid-tar separating device which is provided in the exhaust gas circulating device. A partially-reduced iron is produced by heating and reducing the whole of the raw-material pellets in a bed height direction thereof through a combustion region for the raw-material pellets and a heating region for the raw-material pellets, the combustion region formed on an upstream side of an endless grate by supplying the gas having a high oxygen concentration; and the heating region formed downstream of the combustion region of the endless grate by supplying the gas having a low oxygen concentration.
摘要翻译：一种部分还原铁生产设备包括：废气循环装置，用于将原料颗粒的原料颗粒供给待加热的原料颗粒，通过原料颗粒的点燃供给含氧气体，通过将废气的一部分循环而形成的含氧气体使用点火原料颗粒的热量并将排出的废气与空气混合; 以及设置在废气循环装置中的液体焦油分离装置。通过在原料粒子的燃烧区域和原料粒料的加热区域中加热和还原整个原料粒料在其床高度方向上，形成部分还原铁，形成燃烧区域通过供给具有高氧浓度的气体在无限格栅的上游侧; 以及通过供给氧浓度低的气体而形成在无极炉排的燃烧区域下游的加热区域。

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