The Trace Elements Migratory Regularity During Combustion Proeess Of Coal Of Junger Power Plant

China is a large country of coal production and consumption.Every year,about 80%of production of coal is used for direct combustion.The harmful or toxic trace elements in coal have the significant influence to humanity's health and environment.In recent years,more and more researchers to study the production of coal combustion deeply and find that coal burning products can bring ecnomic benefit.For example,the element of Li can be extracted from the coal combustion production,etc.In Junger power plant,the amount of coal combustion was above 3 million tonne every year and the amount of ash emission was above 1 million tonne.The research about migration of trace elements in coal combustion in this region has very important practical significance in the spect of environmental protection and comprehensive utilization of ash.Based on the geochemistry and statistics as the guidance of theory,the content of trace elements of coal,bottom ash and fly ash from Junger power plant are measured by inductively coupled plasma mass spectrometry(ICP-MS)and the ash content are measured with Muffle furnace.The distribution characteristics,content level and degree of enrichment of trace elements are analyzed.The correlation of trace elements is studied by the two kinds of methods of matrix analysis and R cluster analysis.The occurrence characteristics are discussed.The organic affinity is analyzed according to the correlation between trace elements and ash content.Through the comparative analysis of data the results are obtained that the content of the most trace elements of coal in junger power plant were higher than other areas;most trace elements are in normal content level,and the elements of Li?Ga?In?Pb are in high content level.They show higher concerntation but fail to meet industrial mining grade;the content of harmful trace elements Pb is high,we should prevent contamination.The migration of the trace elements in the combustion process has been discussed by comparing with the relative enrichment coefficient of fly ash and bottom ash.The elements behavior in the combustion may be divided into three kinds:the first,Sr?Bi?U,Be?Mn?Ba and REE,the majority remains in ash,and the concerntation in fly ash is higher than bottom ash;the second,Li?Co?Ni?Cu?Rb?Ga?Cd?In?Cs and Pb,the part enter the atmosphere,the other remains ash;the third kind of trace elements is easy to enter the atmosphere,but no one belong to the kind in our study scope.These elements are more enriched in fine particles by comparing the relative enrichment coefficient of fly ash and bottom ash.The content of Ga in the superfine fly ash also proves this feature.In the end,I put forward the law of mirgration of trace elements in the process of coal-combustion in Junger power plant through the above works that will be the scientific theoretical foundation for futher put forward and carry out the regulatory measure about controlling better protection environment of Junger in Inner Mongolia.