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以马鞍山钢铁公司高炉瓦斯泥为对象,采用微波改性方法对高炉瓦斯泥的粒度分布、微观形貌及化学变化进行表征分析,揭示了微波作用对瓦斯泥吸附特性的影响.结果表明,高炉瓦斯泥的主要组分为含铁烧结矿和焦炭颗粒,经微波改性的瓦斯泥颗粒,在形貌上显示出粗糙度增大,孔隙结构明显,比表面积增大和活性点增多的特征.通过对亚甲基蓝的吸附测试,发现吸附量由微波改性前的54.8mg.g-1提高到改性后的76.7mg.g-1.分析证明,瓦斯泥颗粒中的一些矿物在微波加热过程中发生解离及组分间发生化学反应生成新的物质,是微波改性促使瓦斯泥吸附性能提高的主要原因.实验结果为改善瓦斯泥吸附性能提供了新的方法和理论依据,并为高炉瓦斯泥资源化利用开辟了新的途径.
Taking the blast furnace gas mud of Maanshan Iron and Steel Company as an example, the particle size distribution, micro-morphology and chemical changes of blast furnace gas mud were characterized by microwave modification to reveal the influence of microwave on the adsorption characteristics of gas mud.The results show that blast furnace gas The main components of the mud are iron-bearing sinter and coke particles, and the microwave-modified gas mud particles show the features of coarse roughness, obvious pore structure, specific surface area and active sites on the morphology. Methylene blue adsorption test showed that the amount of adsorption increased from 54.8mg.g-1 before microwave modification to 76.7mg.g-1 after modification.The analysis showed that some minerals in the gas mud particles occurred in the microwave heating process Chemical reaction between components and components to generate new substances is the main reason that microwave modification promotes the adsorption performance of gas mud.The experimental results provide a new method and theoretical basis for improving the gas mud adsorption performance and provide the theoretical basis for blast furnace gas mud resources Utilization opened up new ways.