唐钢高炉瓦斯灰的提铁提锌试验  

Experiment of refining iron and zinc of blast furnace dust at Tangsteel

作　　者：唐小辉[1] 刘润藻[1] 李士琦[1] 杨静波[2] 肖宏[2] 寿庆霞[2] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]河北钢铁股份有限公司唐山分公司,河北唐山063020

出　　处：《中国冶金》2014年第9期49-52,共4页China Metallurgy

摘　　要：研究唐钢高炉瓦斯灰的提铁提锌试验。首先,对烘干后的高炉瓦斯灰进行基础特性研究,包括XRF、XRD、粒度分布检测以及化学成分分析。分析可知,瓦斯灰中wTFe=29.3%,主要以Fe2O3的形式存在;wZn=3.13%,主要以ZnO的形式存在。基于铁氧化物、锌氧化物还原的热力学原理,利用本课题组的精细还原技术,设计2因素2水平的正交试验,使用纯H2对瓦斯灰中的铁氧化物和锌氧化物进行精细还原试验。探讨还原温度(910和980℃)和还原时间(2和4h)对瓦斯灰金属化率和脱锌率的影响。试验结果表明,最佳还原工艺参数为910℃,2h;相应的金属化率和脱锌率分别为89.01%和98.61%。Aims to study on the experiment of refining iron and zinc from the dust of blast furnace at Tangsteel. Firstly, a study on drying characteristics of blast furnace dust was conducted as basic research. It includes XRF, XRD, particle size distribution detection and chemical composition analysis. The analysis shows that the content of TFe in the dust was 29.3%, with the main form of Fe2O3 ; zinc content was 3.13 %, with ZnO as the main form. Based on iron and zinc oxide reduction thermodynamic principle, using the fine reduction technology from our research group, two factors and two level orthogonal experiment was designed to study iron and zinc oxide fine-reduction by using pure H2 gas. The effect of reduction temperature （910℃, 980 ℃） and the reduction time （2h, 4h） on the metallization and dezincification ratio of the dust was investigated. Experimental results show that the optimum reduction process parameters was 910℃, 2h; and the corresponding metallization and dezincification ratio were 89.01% and 98.61%.

关 键 词：高炉瓦斯灰 精细还原 金属化率 脱锌率 

分 类 号：X757[环境科学与工程—环境工程]