文献类型：期刊文献

英文题名：Numerical study on calcination of Ni-Co-Mn ternary precursors in an industrial roller hearth kiln

作者：Dai, Yuanshen[1,2];Jin, Xisheng[3];Zhang, Peng[2,4];Li, Ping[3];Shao, Zhijiang[1];Yang, Minglei[4];Cao, Chenxi[4];Du, Wenli[4]

机构：[1]Zhejiang Univ, Coll Control Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China;[2]BASF China Co Ltd, Shanghai 200137, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Green Chem Engn & Ind Catalysis, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Key Lab Smart Mfg Energy Chem Proc, Minist Educ, Shanghai 200237, Peoples R China

年份：2026

卷号：231

起止页码：169

外文期刊名：CHEMICAL ENGINEERING RESEARCH & DESIGN

收录：;EI(收录号：20262520937115);WOS:【SCI-EXPANDED(收录号:WOS:001798714700001)】；

基金：This work is supported by the National Natural Science Foundation of China (22441040) and Natural Science Foundation of Shanghai (24ZR1414900) .

语种：英文

外文关键词：Lithium-ion battery; Cathode material; Roller hearth kiln; Computational fluid dynamics; Coupled chemo-thermal fields

摘要：Roller hearth kilns (RHKs) are essential for the continuous industrial synthesis of Ni-Co-Mn ternary cathode materials. The quality of calcination is governed by local chemo-thermal conditions within the heating section; however, knowledge of these critical conditions remains limited, as the harsh hydrothermal environment renders direct process monitoring virtually impossible. This study presents a coupled chemo-thermal simulation framework to reveal the spatial distributions of the temperature, flow, and species fields throughout the RHK heating section during continuous calcination of cathode materials. The model's accuracy is validated against industrial data, achieving a mean relative error of 4.2%. Our findings indicate a deviation between sensor readings and the actual temperature of the product-carrying saggars, ranging from 5 K to 209 K, which compromises the precision of thermal process control. This discrepancy is primarily attributed to the radiation absorption by water vapor generated from the endothermic reactions. Furthermore, saggar positions and exhaust strategies are identified as critical factors governing the material heating efficiency. These findings provide a theoretical basis for the future design of more energy-efficient RHKs and the optimization of operational strategies.