This paper analyzes the current status and technical shortcomings of powdered lime production in China,and elaborates on the technical ideas and advantages of preparing powder lime by suspension calcination process,in which limestone tailings with different particle sizes and calcium solid waste resources can be ground into powder as raw materials,thus improving the utilization rate of calcium resources.Meanwhile,based on the shortcomings of the existing industrial production lines,a new path to technological upgrading has been paved,i.e.tempering and circulating calciner and two-stage suspension calciner.
关键词
粉石灰新工艺/调质循环煅烧/二级悬浮煅烧
Key words
New process of powdered lime/Tempering and circulating calcination/Two-stage suspension calcination