本文结合中铝山西分公司多年生产实践经验 ,阐述了Ф42× 6m沉降槽的特点及其在拜耳法赤泥分离、洗涤过程中的优势与缺陷 ,分析了沉降槽在生产实际运行中存在的一些不足 ,并从工艺设备方面提出了具体改进措施 ,对于拜耳法赤泥分离、洗涤系统的生产具有重要的指导意义 Based on many years of practical experience of China Aluminum Shanxi Branch, this paper expounds the characteristics of Ф42 × 6m settling tank and its advantages and disadvantages in Bayer process red mud separation and washing process, and analyzes some existing problems of settling tank in practical operation Insufficient, and put forward the concrete improvement measure from the craft equipment, has the important guiding significance to the Bayer method red mud separation, the washing system production