提高流态化焙烧烟气中砷回收率的方法  

Improvement Methods on Arsenic Recovery Rate from Fluid-bed Roaster Flue Gas

作　　者：严航 白金龙 袁海滨 邱文顺 YAN Hang;Bai Jin-long;YUAN Hai-bin;QIU Wen-shun(Tin Industry Branch Company,Yunnan Tin Co.,Ltd.,Gejiu,Yunnan 661000,China)

机构地区：[1]云南锡业股份有限公司锡业分公司,云南个旧661000

出　　处：《云南冶金》2023年第4期74-78,共5页Yunnan Metallurgy

基　　金：云南省科技厅技术创新人才资助项目(202205AD160028)。

摘　　要：针对锡精矿在流态化焙烧炉焙烧过程中烟尘收砷率较低的情况,从配煤比、焙烧温度、布袋温度等方面做了探讨并提出了改进措施。结果表明:烟尘含砷由10%~20%提高到55%,较好地实现了砷与烟气的分离,提高了焙烧烟气中砷的回收率。Arsenic recovery rate is low while fume flue gas generated in roasting process of tin concentrate by fluidized roaster.To solve this problem,we did the exploration on aspects of coal blending ratio,roasting temperature,bag temperature and so on,and proposed the improvement approaches.Results show the arsenic content in flue gas was increased from 10%~20%to 55%,it is realized better separation of arsenic and offgas,the arsenic recovery rate in roasted flue gas was increased.

关 键 词：流态化焙烧 布袋除尘器 配煤比 焙烧温度 布袋温度 烟尘含砷 

分 类 号：TF802.67[冶金工程—有色金属冶金]