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为了改变高炉燃料结构,人们积极进行以煤代油的技术开发,如喷重油—煤粉混合燃料(COM)、喷煤粉技术等.前者不能完全代替重油,后者除了安全问题以外,设备费也贵.因此,日本钢管公司技术研究所的宫下等人进行了含水30%以下的高浓度煤糊制造技术,及其在高炉上应用问题的研究.制造既能保持煤糊的流动性而且含水分又低的煤糊,应注意以下几点:1. 选择吸收及吸附水分少的致密煤;2. 使粒度分布适当,以减少空隙度;3. 添加适当的界面处理剂,使煤粉颗
In order to change the fuel structure of the blast furnace, people actively carry out the technology development of substituting coal for oil, such as heavy oil-pulverized coal (COM), coal pulverized coal injection technology, etc. The former can not completely replace the heavy oil, the latter in addition to safety issues, Is also expensive.Therefore, the Japanese Steel Pipe Company Institute of Technology, Miyashita et al conducted a high concentration of less than 30% moisture content of coal paste manufacturing technology, and its application in blast furnace research to create both to maintain the mobility of coal paste and Low moisture and coal paste, should note the following: 1. Choose to absorb and absorb moisture less dense coal; 2 to make the particle size distribution appropriate to reduce porosity; 3. Add appropriate interface treatment agent, so that pulverized coal Piece