摘要
基于烧结生产实际工艺参数,采用响应曲面法对烧结矿孔隙率进行优化研究,以碱度(A)、燃料配比(B)、燃料粒度(C)为设计变量,以烧结矿孔隙率(Y_(1))和转鼓指数(Y_(2))为目标函数,建立数学模型,进行三因素的优化设计分析。研究结果表明,碱度和燃料配比对孔隙率和转鼓指数影响显著,燃料粒度的影响较小;碱度与燃料配比、燃料配比与燃料粒度的交互作用明显。通过分析试验结果,建立了烧结矿孔隙率和转鼓指数的二项式模型,模型预测的最优烧结参数为碱度值2.15,燃料粒度(小于3 mm颗粒占比)为71.19%,燃料配比为5.50%。在此最优烧结参数下进行工业试验,结果显示烧结矿孔隙率降低至20.07%,转鼓指数提高至78.43%,与优化前相比,孔隙率降低了1.85%,转鼓指数提高了3.26%。
Based on the actual process parameters of sintering production, the response surface method was used to optimize the sinter porosity. The mathematical model was established with the design variables of basicity(A), fuel ratio(B) and fuel granularity(C), and objective functions of porosity(Y_(1)) and drum index(Y_(2)), to carry out the optimization design analysis of three factors. The results show that basicity and fuel ratio have the most significant influence on porosity and drum index, while the influence of fuel particle size is less significant. The interaction between basicity and fuel ratio, fuel ratio and fuel size are obvious. Through the analysis of experimental results, a binomial model of porosity and drum index of sinter was established. The optimal sintering parameters predicted by the model were basicity value of 2.15, fuel particle size(<3 mm particles proportion) of 71.19% and fuel ratio of 5.50%. Industrial experiments were carried out under these optimal sintering parameters. The results show that the porosity of sinter is reduced to 20.07%, the drum index is increased to 78.43%, and the porosity is reduced by 1.85% and the drum index is increased by 3.26% compared with before optimization.
作者
易正明
刘强
覃佳卓
聂礼
杜东
张东升
YI Zheng-ming;LIU Qiang;QIN Jia-zhuo;NIE Li;DU Dong;ZHANG Dong-sheng(Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China;National-provincial Joint Engineering Research Center of High Temperature Materials and Lining Technology,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China;Iron Coke Division,Shuicheng Iron and Steel Group Co.,Ltd.,Liupanshui 553000,Guizhou,China)
出处
《中国冶金》
CAS
北大核心
2022年第1期64-71,共8页
China Metallurgy
基金
国家自然科学基金资助项目(51604199)。
关键词
响应曲面法
交互作用
碱度
燃料特性
孔隙率
烧结矿强度
response surface method
interaction
basicity
fuel characteristics
porosity
sinter strength
作者简介
易正明(1973-),男,博士,教授,E-mail:csuyzm@163.com;通讯作者:刘强(1997-),男,硕士生,E-mail:2508235458@qq.com。
