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通过向熔融高炉渣中加入高炉粉尘的实验,探寻了高炉渣浴碳热还原高炉粉尘的可行性。实验结果表明:在1500℃下,高炉粉尘中的铁氧化物能够被其所含的碳充分还原成金属铁。这意味着借助高炉渣的物理热平台,可以实现高炉自产粉尘中铁氧化物的碳热还原,且碳热还原反应后生成的铁珠便于与渣分离。反应前后的高炉渣组分基本一致,反应后高炉渣的温度不影响其资源化综合利用。
Through the experiment of adding blast furnace dust into the molten blast furnace slag, the feasibility of carbon-thermal reduction of blast furnace dust by blast furnace slag bath was explored. The experimental results show that at 1500 ℃, the iron oxides in the blast furnace dust can be fully reduced to metallic iron by the contained carbon. This means that the physical thermal platform of blast furnace slag can realize the carbothermal reduction of iron oxide in the blast furnace-produced dust, and the iron beads generated after the carbothermal reduction reaction can be easily separated from the slag. The blast furnace slag components before and after the reaction are basically the same, and the temperature of the blast furnace slag does not affect the comprehensive utilization of the resources after the reaction.