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中文摘要：
中国“导风墙-烘干床”式球团竖炉的根本出路在于大型化和高效化。基于此，从炉窑热工角度阐述了中国球团竖炉大型化和高效化的典型关键问题。研究表明，炉内气固水当量比、预热-焙烧带高度和焙烧带宽度等问题是球团竖炉大型化和高效化的关键问题；从炉内焙烧风-球团间的气固传热方程和热平衡方程确定竖炉在某产量下的气固水当量比；从球团焙烧工艺和炉内气体流动等角度确定预热-焙烧带高度；从焙烧风在焙烧带宽度上的分布均匀性等角度确定焙烧带宽度。
英文摘要：
Pelletizing shaft furnace（PSF） with internal vertical air channels（IVAC） and drying bed is a conventional pellet roasting equipment in China. With the great increase of iron and steel output, it is more difficult to adapt the situation for PSF because of its inefficient output, therefore, it is of great imminence to enlarge its scale and improve its efficiency. From the aspect of thermal engineering of metallurgical furnace, three key problems were put forward scientifically to enlarge the scope of production and improve efficiency for PSF with IVAC and drying bed： gas-solid water equivalent ration, height of preheating-roasting zone and width of roasting zone. Moreover, some conclusions were drawn as follows： the desirable gas-solid water equivalent ratio may be determined by the equations of gas-solid heat exchange and thermal equilibrium; the height of preheating-roasting zone may be defined from the aspects of roasting technicque of pellet and gas flow in PSF; the width of roasting zone may be obtained by the view of roasting gas distribution in roasting zone.
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