高炉渣制备系列精细化工品的技术研究  

Preparation of a series of fine chemicals by blast furnace slag

作　　者：申星梅[1,2] 李辽沙[1] 武杏荣[2] 王平[2] 褚亮[1] 

机构地区：[1]安徽工业大学教育部冶金减排与资源综合利用重点实验室,安徽马鞍山243002 [2]安徽工业大学冶金工程与资源综合利用安徽省重点实验室,安徽马鞍山243002

出　　处：《化工学报》2016年第9期3988-3994,共7页CIESC Journal

基　　金：国家自然科学基金项目(51302003;51274006);安徽省科技厅项目(1506c085003);安徽省冶金固废材料化利用新技术创新团队项目;2014年马鞍山市科技计划~~

摘　　要：以高炉渣为主要原料,在前期工作基础上,通过更进一步深入研究,开发出高炉渣制备系列精细化工品的完整工艺路线。采用硫酸酸解高炉渣的方法,获得产品石膏;制备超细硅酸铝的最佳水渣比为7:1,体系pH控制为4.0,通过加入铝片的方式进行除铁;制备镁铝尖晶石的最佳尿素质量百分比为65%,最佳除铁方法为向前体溶液中加入5%Na_2S_2O_4。采用高炉渣制备得到的3种产品,其化学成分均符合相关标准。该工艺路线具有流程短、成本低等优点;渣中有价组分得以全部利用,无残渣排放,环境效益明显。On the basis of previous works, preparation of a series of fine chemicals by blast furnace slag was researched further and deeply, and the process route was developed. The first product, gypsum, was obtained by sulphuric acid hydrolysis. The optimum conditions for preparing aluminum silicate were： water-slag ratio 7：1, pH 4.0 and adding small pieces of Al plates to remove iron. The optimum conditions for preparing magnesium aluminum spinel were： mass percent of urea 65% and amount of Na_2S_2O_4 5%. The chemical composition of the three products was in accord with the relative standards. This process had the advantages of short flow, low cost, etc. Almost all valuable contents in the slag were used, and no residue was discharged. Thus, it had better environmental benefit.

关 键 词：高炉渣 超细硅酸铝 镁铝尖晶石 石膏 除铁率 

分 类 号：TQ170.9[化学工程—硅酸盐工业]