不同粒度飞灰中16种微量元素的含量分布

研究了不同粒级的燃煤飞灰中的Ｂａ、Ｂｅ、Ｃｄ、Ｃｒ、Ｃｕ、Ｈｇ、Ｌｉ、Ｍｎ、Ｎｉ、Ｐｂ、Ｓｒ、Ｔｉ、Ｖ、Ｚｎ、Ｚｒ元素的含量分布，煤中元素的含量比及富集因子。

Grain size distribution of 16 trace elements in fly ash of burning coal

: The contents distribution of Ba, Be, Cd, Co, Cr, Hg, Li, Mn, Ni, Pb, Sr, Ti, V, Zn, Zr in coal burning fly ash with different particle fraction, the proportion of their contents in fly ash to that in coal and their enrichment factors were studied. It is discovered that the grain size distribution of these elements was related to boiler types and burning patterns. In the fly ash produced by fine coal boiler and reciprocating grate boiler, the smaller the grain size, the greater the enrichment factors of most elements. But chute grate boiler has many distribution types. Although the mass percentages of elements were different among various boiler types, most of trace elements, generally speaking, existed in the particles with the diameter<0. 125 mm.