混装铁焦对人造富矿还原行为的影响

 高炉炼铁是资源、能源的消耗大户，节能潜力巨大。铁焦是一种高反应性焦炭，将合适粒度和数量的铁焦与含铁炉料混装入炉，从理论上说具有降低焦比，取得节约稀缺炼焦煤资源和降低生产成本的潜力。对混合试样的还原机理进行了分析，并对铁焦与人造富矿的耦合反应进行了实验室研究，证明混入铁焦对烧结矿和球团矿的还原反应有明显的促进作用，提高温度和增加铁焦用量对提高铁矿石的还原度有利。

Effect of Iron Coke Mixed Charging on Agglomerates Reduction Behavior

The blast furnace ironmaking process needs a large number of resources and energy with a great energy saving potential. Iron coke is a highly reactive coke. Iron coke with the appropriate size and amount are mixed with ferrous burden and then charged into the blast furnace. It can lower coke rate theoretically, save scarce coking coal resources and reduce the production cost. The reduction mechanism of the mixed sample is analyzed and the coupling-reaction of iron coke and agglomerates is researched in laboratory, confirming that the mixing of iron coke has an obvious promotion effect on the reduction reaction of sinter and pellets. And increase of temperature and iron coke consumption are benefit for the improvement of iron ores reduction degree.