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.
出处
《染料与染色》
CAS
2003年第3期177-178,共2页
Dyestuffs and Coloration
关键词
废硫酸
还原铁泥
硫酸亚铁
氧化铁红
waste sulfuric acid
iron slurry
ferrous sulfate
red iron oxide
