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利用岩相显微分析、化学分析及拉曼分析技术,对武钢高炉炉尘的粒度组成、化学成分变化及碳的来源进行了研究。研究结果表明,武钢高炉炉尘的粒度组成主要以70~900μm为主,比例占80%左右;岩相显微分析表明,高炉炉尘中未消耗的煤粉和焦炭存在不同的结构形态,主要包含粗粒镶嵌、细粒镶嵌、纤维加片状,并含有矿物质、惰性物、煤焦等物质。利用图像分析和拉曼光谱技术共同对高炉炉尘中碳来源进行测定,2种方法所测结果接近,未燃煤粉占高炉炉尘总碳量的10%左右。
The grain size, chemical composition and carbon source of blast furnace dust in WISCO were studied by means of facies analysis, chemical analysis and Raman analysis. The results show that the grain size of the blast furnace dust in WISCO is mainly 70 ~ 900μm, accounting for about 80% of the total; and the facies analysis shows that there are different structural forms of coal and coke that are not consumed in blast furnace dust. Contains coarse-grained inlaid, fine-grained inlay, fiber plus flake, and contains minerals, inertia, char and other substances. The results of the two methods are close to each other, and the unburned pulverized coal accounts for about 10% of the total carbon in blast furnace dust by using image analysis and Raman spectroscopy.