本文对选矿常用的分级设备──水力旋流器和螺旋分级机在应用和成本方面进行了比较。虽然螺旋分级机在选矿工业中已应用了数十年，但是由于旋流器的发展而使其一度失去了重要性。这种现象目前正在改变，近几年来，人们对螺旋分级机又重新增加了兴趣，这是由于它们有比旋流器更好的优点，比如：可能获得更高浓度的产品；短路较少，经久耐用，生产成本较低。本文针对这些机械的安装、操作和维护等不同方面的成本进行严格的比较。 This article compares the application and cost of hydrocyclones and spiral classifiers commonly used in mineral processing. Although spiral classifiers have been used in the mineral processing industry for decades, they have once lost their importance due to the development of cyclones. This phenomenon is currently changing and in recent years there has been a renewed interest in spiral classifiers due to their advantages over cyclones such as the possibility of obtaining higher concentrations of product, less short-circuits, Durable, lower production costs. This article is a rigorous comparison of the costs of different aspects of installation, operation and maintenance of these machines.