Distributions of rare-earth elements in two Chinese coals and their burnt products

摘要

The concentrations of two fresh Chinese coals (lignitie and fatty coal ) from different geological origin and the corresponding fly and bottom ashes were determined using inductively coupled plasma mass spectrometry(ICP-MS). The ranges and means of concentrations of these elemennts were given. Based on the combustion simulating experiment in the one-dismensional boiler, the contents of REE (rare-earth element) of 18samples in lignite, fatty coal and their fly and bottom ashes in different combustion condition were determined, and geochemical feature of REE were analyzed.