世界上筒体内径最大（Φ12.2m）的自磨机

——2023年重型机械世界之最科技成果获奖项目专题报道

设备/技术名称：φ12.2×11.0m自磨机

研制单位：中信重工机械股份有限公司www.citichmc.com，

智能矿山重型装备全国重点实验室，洛阳矿山机械工程设计研究院有限责任公司

首次投运时间：2016年4月

联系人：王冬乐，18937993690  ，wangdongle@citic-hic.com.cn

 Ø 12.2×11.0m自磨机，其筒体内径达12.2m，筒体长度达11.0m，多滑履轴承直径达4.5m，总重超过3700吨，年产2200万吨品位65%铁精矿。

本项目首创了高承载力多滑履轴承和润滑技术，解决了作业环境复杂、超大型重载支承的技术难题；发明了大型磨机筒体和端盖“多片组合”设计制造技术，解决了大型磨机超大零部件极限制造技术难题；构建了大型磨机的多场耦合动力学模型，开发了大型磨机的动态特性分析方法，解决了大型磨机基础共振的技术难题，使装备得到了安全、可靠的运行；构建了大型磨机多元信息融合的在线智能监控系统，开发了大型磨机工作状态的智能监测监控技术，实现了磨机的预测性维护。

经国家矿山机械质量监督检验中心检测，主要性能指标符合设计要求。该成果在中信泰富SINO铁矿进行了成功应用，取得了较好的经济效益和显著的社会效益，中国重型机械工业协会鉴定委员会认为项目成果整体技术达到国际领先水平。

图1、图2：应用现场

The world's largest autogenous mill by inner diameter (12.2m)

φ12.2×11.0m AG Mill

CITIC HEAVY INDUSTRIES CO.,LTD.  https://www.citichmc.com/

State Key Laboratory of Intelligent Mining Heavy Equipment

Luoyang Mining Machinery Engineering Design Institute CO.,LTD.

The Ø12.2 ×11.0m autogenous mill has a shell diameter of 12.2m, a shell length of 11.0m, a multi slide bearing diameter of 4.5m, a total weight of over 3700 tons, and an annual output of 22 million tons of 65% grade iron concentrate.

This project pioneered high bearing capacity multi sliding shoe bearings and lubrication technology, solving the technical difficulties of complex operating environments and ultra large heavy-duty supports; Invented the "multi piece combination" design and manufacturing technology for the large mill shell and head, solving the technical problem of extreme manufacturing of oversized components in large mills; Constructed a multi field coupled dynamic model for large-scale grinding machines, developed a method for analyzing the dynamic characteristics of large-scale grinding machines, solved the technical problem of foundation resonance of large-scale grinding machines, and ensured the safe and reliable operation of the equipment; Constructed an online intelligent monitoring system for the fusion of multiple information of large-scale mills, developed intelligent monitoring and control technology for the working status of large-scale mills, and achieved predictive maintenance of the mills.

After testing by the National Mining Machinery Quality Supervision and Inspection Center, the main performance indicators meet the design requirements. This achievement has been successfully applied in CITIC Taifu SINO iron mine, achieving good economic and significant social benefits. The Appraisal Committee of China Heavy Machinery Industry Association believes that the overall technology of the project achievement has reached the international leading level.