高炉瓦斯泥参与水煤浆制备及其成浆特性  

Preparation and Rheology of Coal Water Slurry Blended with Blast Furnace Sludge

作　　者：高志芳[1] 李辽沙[1] 吴照金[1] 武杏荣[1] 苏世怀[2] 吴晓华[3] 

机构地区：[1]安徽工业大学安徽省冶金工程与资源综合利用重点实验室,冶金减排与资源综合利用教育部重点实验室,安徽马鞍山243002 [2]马鞍山钢铁股份有限公司,安徽马鞍山243002 [3]中国科学院科技政策与管理科学研究所,北京100190

出　　处：《过程工程学报》2012年第4期564-568,共5页The Chinese Journal of Process Engineering

基　　金：安徽省自然科学基金项目(编号:11040606M105)

摘　　要：将马鞍山钢铁股份公司高炉瓦斯泥配入东凯肥煤中制备水煤浆,分析了瓦斯泥和煤样的物理化学特性,采用回归方法研究了瓦斯泥与水煤浆表观粘度、定粘浓度(室温25℃、表观粘度定为1200mPas时水煤浆的浓度)及发热量的关系.结果表明,加入高炉瓦斯泥能明显改善水煤浆的流变性,降低其表观粘度,但稳定性和发热量均有所降低.主要原因是高炉瓦斯泥的主要组分改变了水煤浆溶液的酸碱度导致其成浆性发生改变,瓦斯泥中矿物表面带电及矿物含量也是影响成浆性的重要因素.添加24%瓦斯泥能制备较理想的水煤浆.Blast furnace sludge（BFS） from Ma’anshan Iron and Steel Co,Ltd was added in Dongkai fat coal to prepare coal water slurry.Based on the analysis of physicochemical properties of BFS and fat coal,the apparent viscosity,concentration,caloric value of coal water slurry with addition of BFS were examined,and the effect of BFS was analyzed by regression method.The results show that the viscosity of coal water slurry is decreased and its slurrying ability enhanced with the increase of BFS addition,whereas,the slurrying stability and caloric value are decreased.The main mechanism is that lots of alkaline oxides in BFS lead to soluble ion dissolution with changing of the pH value of coal water slurry.The relative content of soluble and insoluble minerals,which affect the density of coal,is also a key factor for the slurrying ability.When the addition of BFS is 24%,the slurrying ability and caloric value of coal water slurry can meet industrial requirements.

关 键 词：高炉瓦斯泥 水煤浆 成浆特性 流变性 

分 类 号：TQ53[化学工程—煤化学工程]