用小型沸腾炉对硫含量50％的硫精矿进行了模拟沸腾焙烧试验,经过对焙烧温度、焙烧时间和进气压力的试验,确定了较佳工艺条件为:焙烧温度800℃,焙烧时间为5min,进气压为0.5MPa,得到的烧渣中硫含量低于0.30％,全铁含量大于64％.实验室模拟焙烧试验产出的烧渣质量较好,达到了高品位铁精矿的质量要求.%The simulated fluidized roasting experiment in a small fluidized-bed roaster was carried on the pyrite con centrate containing 50% of sulfur. Through the experiment, the optimal technological conditions were determined; the roasting temperature was 800℃,the roasting time was 5min and the intake pressure was 0. 5MPa. At last,the content of sulfur in the cinder is less than 3% , while the iron grade is over 64%. The quality of the cinder pro duced from the simulated experiment is good, reaching the requirements of high grade iron concentrate.
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