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据美刊《动力》1989年1月号报道,目前广泛采用的选煤工艺都是湿式工艺,如泡沫浮选,富集筛选、水力旋转等工艺。最近美国戴维森公司正在研制新的干式选煤装置,这套装置的核心是一组在空气沸腾振动作用下的重力分离器,现已完成第一阶段的研究试验工作。初步测试结果表明,该装置用于选低硫或高硫煤时,可除去70％的硫,还可除
According to the American publication “Power” reported in January 1989, the currently widely used coal preparation process are wet processes, such as froth flotation, enrichment screening, hydraulic rotation and other processes. Recently, the United States Davidson is developing a new dry coal preparation device. At the heart of this device is a set of gravity separators under the action of air boiling vibration. The first phase of the research and experimental work has now been completed. Preliminary test results show that the device can be used to select low-sulfur or high-sulfur coal, can remove 70% of the sulfur, but also