Abstract
Objective: The optimal design scheme of box grid magnetic iron-separator in milk powder production process was explored. Methods: In this study, the working principle of the box grid magnetic iron-separator was explored by using the finite element simulation analysis method under real production conditions in a fully simulated milk powder plant. Through the single factor test, the effects of material drop height, the type of metal foreign matter, the field strength, and the net distance of the magnetic bar on the effective interception rate of the box grid magnetic iron-separator were explored, and the design solution was optimized by using matrix analysis. Results: Assuming that the minimum acceptable standard is an effective interception rate greater than 80% for cast iron, 304 stainless steel and 316 stainless steel, the critical design conditions are as follows: ① When the magnetic field strength of the magnetic bar is 1.0 T, the drop height should be less than 100 mm, the number of layers of the magnetic bar should be greater than or equal to 6, and the clearance of the bar magnet is 25 mm. ② When the magnetic field strength of the magnetic bar is 1.4 T, if the falling height of the material is less than 100 mm, the number of layers of the magnetic bar should be greater than or equal to 4, and the clearance of the bar magnet is 25 mm; If the falling height of the material is between 100 and 300 mm, then the number of magnetic rod layers should be greater than 6, and the clearance of the bar magnet is 25 mm. Conclusion: The research results have industrial application value for milk powder and other powdered food materials, such as protein-based raw materials, powdered fats and oils, starch, food additives, etc.
Publication Date
4-25-2023
First Page
105
Last Page
110,145
DOI
10.13652/j.spjx.1003.5788.2022.80307
Recommended Citation
Jian-bo, CHENG; Bao-ku, CHEN; Hui, LI; Lin, GUO; Yan, WANG; and Li-rui, SUN
(2023)
"Finite element analysis of box grid magnetic iron-separator and its application in milk powder production,"
Food and Machinery: Vol. 39:
Iss.
1, Article 18.
DOI: 10.13652/j.spjx.1003.5788.2022.80307
Available at:
https://www.ifoodmm.cn/journal/vol39/iss1/18
References
[1] 国家质量监督检验检疫总局. 危害分析与关键控制点（HACCP）体系乳制品生产企业要求: GB/T 27342—2009[S]. 北京: 中国标准出版社, 2009: 2.
[2] 周意和. 食品生产过程中金属异物检测系统设计[D]. 包头: 内蒙古科技大学, 2014: 22-25.
[3] 李颖. 百名消费者投诉奶粉中现黑色颗粒异物[J]. 中国质量万里行, 2018（9）: 76-77.
[4] 陈妮希. 雅培屡屡被曝奶粉中疑似异物市场销售仍叫好[J]. 食品界, 2016（1）: 36-38.
[5] 宿希强. 美赞臣奶粉遭密集投诉疑存重大隐患[J]. 中国质量万里行, 2013（8）: 42.
[6] 中国质量万里行投诉部. 奶粉投诉上升涉多品牌[J]. 中国质量万里行, 2013（5）: 38-39.
[7] 中国质量万里行投诉部. 进口奶粉“美素佳儿”多地现不明问题[J]. 中国质量万里行, 2013（3）: 36-37.
[8] 李佳. 除铁器的分类、应用情况以及发展方向[J]. 陶瓷, 2010（11）: 40-41.
[9] 玉华烺, 谢远忠. 自卸式除铁器在糖厂的应用和探讨[J]. 广西糖业, 2021（4）: 31-36.
[10] 罗斌, 吴平, 黄庭峰, 等. 除铁器在散粮输送工艺中的应用[J]. 现代食品, 2020（20）: 20-21.
[11] 张朋立, 宋顺林, 刘亚飞, 等. 永磁除铁器在多元材料前驱体制备中的应用[J]. 山东化工, 2021, 50（18）: 159-160.
[12] 白小利, 郭志强, 张征国, 等. PVC树脂生产过程中除铁技术的应用[J]. 聚氯乙烯, 2021, 49（6）: 11-13.
[13] 李文科. 建筑垃圾资源化利用中除铁设备的选择与使用技巧[J]. 砖瓦, 2021（2）: 25.
[14] 赵会兰. 金属探测仪在选煤厂的应用[J]. 洁净煤技术, 2019, 25（S1）: 66-69.
[15] 胡志栋. 基于有限元分析的移动回转压头框式液压机主油缸结构设计[J]. 机械设计, 2021, 38（10）: 152.
[16] 刘滨, 刘志珍, 刘凤亮. 基于ANSYS的永磁除铁器的磁场计算与分析[J]. 矿山机械, 2010, 38（1）: 100-101, 111.
[17] 金欣, 林鹤云. 基于等效面电流模型的AMS永磁体磁场解析分析[J]. 中国科技信息, 2009（2）: 39-41.
[18] 曲庆文, 付雷杰, 万继祥. 基于磁场有限元分析的永磁除铁设备[J]. 机械工程师, 2008（3）: 70-71.
[19] MOHANRAJ G T, RAHMAN M R, JOLADARASHI S, et al. Design and fabrication of optimized magnetic roller for permanent roll magnetic separator （PRMS）: Finite element method magnetics （FEMM） approach[J]. Advanced Powder Technology, 2021, 32（2）: 31-36.
[20] 杨志军, 曲鹏, 李云辉, 等. 基于有限元分析的压力管道外漏磁检测[J]. 无损检测, 2021, 43（9）: 7-12.
[21] SINGH V, NAG S, TRIPATHY S K. Particle flow modeling of dry induced roll magnetic separator[J]. Powder Technology, 2013, 244:85-92.
[22] KARBAN P, ULRYCH B, DOLEZEL I. Design of power magnetic chute separator and minimization of its external magnetic field[C]. 2005 IEEE Russia Power Tech. [s.l.]: IEEE, 2008: 213-214.
[23] CIOSK K. Magnetic field and forces in a magnetic separator gap[J]. Przeglad Elektrotechniczny, 2012, 88（12B）: 47-49.
[24] BHANDARI B. Introduction to food powders[M]. [s.l.]: Woodhead Publishing, 2013: 1-25.
[25] BHATIA R. Matrix analysis[M]. [s.l.]: World Book Publishing Company, 2011: 152-193.