重介质选煤具有分选精度高、对原煤适应性强、易于实现自动化控制等优点 ,是选煤工业发展的首选技术。但是 ,过去的重介质选煤系统投资大 ,并且存在一些技术问题。针对这两方面的问题 ,唐山分院进行了技术攻关。他们在研究开发中注重解决基层选煤厂运行中的实际问题 ,及时学习? Heavy medium coal preparation has the advantages of high separation accuracy, strong adaptability to raw coal and easy automatic control, which is the preferred technology for the development of coal preparation industry. However, in the past heavy-medium coal preparation systems were heavily invested and had some technical problems. In response to these two issues, Tangshan Branch conducted a technical tackle. In their research and development, they focus on solving the practical problems in the operation of the grass-roots coal preparation plant and learn in time?