Abstract
This paper describes a programme of work directed at applying novel cyclone dust separator technology to cyclone preheater towers. The novel technology utilises a concept called a Vortex Collector Pocket which is used to improve overall collection efficiency as well as making possible the construction of a very compact novel direct contact solid to gas heat exchanger. Cyclone preheater towers are formed by connecting four or more large cyclones in series to the end of a cement kiln. Raw cement meal falls from the top stage through the system in counterflow to the hot gases forming a direct contact gas to solid heat exchanger of potentially high effectiveness. Work directed at producing a 1/10 scale pilot model of a compact high efficiency cyclone preheater tower is described together with preliminary data.
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