干法脱硫灰制备高纯硫酸钙的实验研究  

Experimental Study on Preparation of High-Purity Calcium Sulfate from Dry Desulfurization Ash

作　　者：曾国栋 万晓霞 刘学鹏 沈凡熙 伍泽广 ZENG Guodong;WAN Xiaoxia;LIU Xuepeng;SHEN Fanxi;WU Zeguang(Hu′nan Xianggang Xintong Furnace Material Co.,Ltd.,Xiangtan 411422,China;School of Resource&Environment and Safety Engineering,Hu′nan University of Science and Technology,Xiangtan 411100,China;Ping′an Electrical Co.,Ltd.,Xiangtan 411100,China)

机构地区：[1]湖南湘钢鑫通炉料有限公司,湖南湘潭411422 [2]湖南科技大学资源环境与安全工程学院,湖南湘潭411100 [3]平安电气股份有限公司,湖南湘潭411100

出　　处：《河南化工》2024年第5期1-3,共3页Henan Chemical Industry

基　　金：湖南省教育厅科学研究重点项目(21A0315)。

摘　　要：为了实现干法脱硫灰的资源化利用,通过亚硫酸钙氧化等工艺制备出了高纯硫酸钙粉体,并确定了最佳实验方法:将70 g脱硫灰投入300 mL水中,加入45 g过氧化氢,反应90 min,再加入550 g稀硫酸反应60 min。亚硫酸钙的转化率为97.86%,产品中硫酸钙的含量为98.84%。该工艺技术方法对干法脱硫灰的资源化利用具有较高的借鉴价值。In order to realize the resource utilization of dry desulfurization ash,the high-purity calcium sulfate powder by calcium sulfite oxidation and other process is prepared.The best experimental method are determined,70 g desulfurization ash is put into 300 mL water,45 g hydrogen peroxide is added,and the reaction lasts for 90 minutes,and then 550 g dilute sulfuric acid is added for 60 minutes.The conversion rate of calcium sulfite is 97.86%,and the content of calcium sulfate in the product is 98.84%.This technology has high reference value for the resource utilization of dry desulphurization ash.

关 键 词：氧化率 干法脱硫灰 制备硫酸钙 

分 类 号：TQ125.14[化学工程—无机化工] TQ132.32