CLT-酸生产中还原铁泥和废硫酸的治理与利用  

The Treatment and Reuse of Waste Sulfuric Acid and Iron Slurry in the Production of CLT-acid

作　　者：郝艳霞[1] 苏砚溪[1] 

机构地区：[1]石家庄职业技术学院化工系,石家庄050081

出　　处：《染料与染色》2003年第3期177-178,共2页Dyestuffs and Coloration

摘　　要：将30％～35％的废硫酸加热至90℃～100℃,在搅拌下加入生产CLT酸的还原铁泥,然后过滤、脱色、结晶,在300℃下脱水得硫酸亚铁白色粉末。将精制的硫酸亚铁在800℃下锻烧2～2.5小时,再经大型研磨得氧化铁红。讨论了预处理、反应条件等因素对氧化铁红质量的影响。Waste sulfuric acid of about 30%~35% concentration was heated to 90℃~100 ℃, then the iron slurry was introduced with stirring, followed by filtration, decolorization, crystallization and dehydration at 300℃, to give ferrous sulfate as a white powder; the purified ferrous sulfate was baked at 800C for 2-2.5h, then milled to obtain red iron oxide. The factors affecting the quality of this red iron oxide, such as pretreatment and reaction conditions, were also discussed.

关 键 词：废硫酸 还原铁泥 硫酸亚铁 氧化铁红 

分 类 号：X783[环境科学与工程—环境工程]