颗粒氧化锌脱硫行为的电子探针显微分析

STUDY ON DESULFURIZATION OF ZINC OXIDE BY EPMA

用ＥＰＭＡ对ＺｎＯ基脱硫剂的脱硫颗粒径向硫分布行为进行了考查，结果表明，反应是在有一定厚度的区间而不是在一界面上进行，饱和产物层较难形成，说明固体扩散的存在，微晶粒子在颗粒ＺｎＯ脱硫中的作用不容忽视。

The radial distribution of sulphur in spherical particles of reacted zinc oxide was investigated by using EPMA technique. The results show that the reaction occurs in a zone rather than at a sharp defined boundary and it is very hard to get a saturated zone of product. It is indicated that small grains play an important role in desulfurization by ZnO particle, and the unreacted shrinking core model is not suitable for describing the desulfuring behavior of this process.