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在我国炼铁能耗中燃料能耗约占90％,其余10％是电力、鼓风、水及蒸汽等等。二次能源的回收基本上仅限于回收高炉煤气,炉渣显热、热风炉废气显热、煤气显热、余压才开始回收,二次能源的回收利用尚处于开始阶段。 从能源消耗的结构来看降低炼铁燃料比的关健是以降低燃料消耗为主,同时要抓紧降低工序能耗和大力开展二次能源的回收。
The energy consumption of ironmaking in China accounts for about 90% of energy consumption, the remaining 10% is electricity, blast, water and steam and so on. Recovery of secondary energy is basically limited to the recovery of blast furnace gas, sensible slag, hot blast furnace gas sensible heat, gas sensible heat, pressure began to recover, the secondary energy recovery is still in its infancy. From the point of view of the structure of energy consumption, the key point of reducing the ratio of iron and steel to fuel is to reduce fuel consumption. At the same time, efforts should be made to reduce the energy consumption of the process and vigorously carry out secondary energy recovery.