项目名称： 微波外场低温预处理对炼焦煤碳化行为及焦炭冶金性能的影响研究

项目编号： No.51504131

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 矿业工程

项目作者： 庞清海

作者单位： 辽宁科技大学

项目金额： 20万元

中文摘要： 提高冶金焦炭在高炉炉身下部高温性能，改善料柱的透气性和透液性，提高高炉煤气的还原效率，已成为炼铁工作者所共同面对的迫切任务。本项目拟通过微波外场对炼焦进行低温预处理，研究微波预处理炼焦煤的裂解和碳化机理，探索微波改质过程对炼焦煤物化性能和焦化性能的影响，揭示炼焦煤碳结构有序性在不同微波改质条件下的演变规律，为炼焦煤结焦性能的优化提供理论基础；明晰改质炼焦煤配合焦化过程中碳结构、微晶结构、光学组织、微观结构、有机官能团结构的形成及演变规律，阐释硫和灰分矿物质赋存状态在碳化过程中变化，调控微波改质条件优化焦炭裂解和碳化反应性能；阐明焦炭微观结构与焦炭气化反应性、反应后强度、抗碱金属催化能力之间的关系，掌握矿物质及碱金属对焦炭气化反应的催化机理，表征气化反应过程中活性碳素基点，为低反应性-高质量焦炭的制备提供基础理论支撑。

中文关键词： 高炉炼铁；炼铁新工艺；炼铁原料；炼焦；焦炭

英文摘要： In order to improve the gas and liquid permeability of stock column and eventually maintain high reduction efficiency in blast furnace, the achievement of excellent metallurgical coke performance in shaft of blast furnace has become the prior task for all ironmaking researchers. In this project, mechanism of coking coal pretreatment with microwave was investigated, by which the pyrolysis and carbonizing mechanism of treated coal and variation pattern of basic and coking property of coal during treatment as well as the variation of law carbon structure regularity will be explored. Consequently, basis for the optimization of coal coking property can be derived; Meanwhile, the variation law of carbon structure, microcrystalline structure, optical structure, microstructure as well as the organic functional group structure will be clarified. The changes in existence of sulfur and mineral matter can be deduced, by which the pyrolysis and coking property of coal can be manipulated. Besides, the relationship between microstructure and reactivity, strength after reaction, resistance for the catalysis from alkali metal will be investigated, by which the catalysis mechanism of mineral and alkali metal on coke reactivity will be revealed and simultaneously the active carbon point can be defined. Based on above research results, the production of metallurgical coke with low reactivity and superior performance can be realized.

英文关键词： Blast furnace ironmaking;New ironmaking process;Ironmaking raw material;Coking;Coke