连续酸解技术在硫酸法钛白生产中的应用  

Application of continuous acidolysis in TiO_2 production by sulfuric acid process

作　　者：罗志强[1] 

机构地区：[1]攀钢集团研究院有限公司钒钛资源综合利用国家重点实验室,四川攀枝花617000

出　　处：《无机盐工业》2012年第3期33-35,共3页Inorganic Chemicals Industry

摘　　要：对比了应用于硫酸法钛白粉工业生产的两种酸解技术(连续酸解技术和间歇酸解技术)在工艺流程、反应历程、设备方面的不同。连续酸解技术的主要特点为酸解率高(大于96%)、耗酸量低、自动化程度高、装备占地面积小、尾气排放量小、废酸回用量大。阐述了连续酸解技术在环保方面的优势:酸解尾气连续排放,含硫量低,便于处理;废酸浓缩至60%可返回酸解工序,回用率可达100%。对连续酸解技术在能耗和设备耐腐蚀性方面存在的问题和解决措施进行了说明。指出了钛渣连续酸解技术具有应用前景。The process flow,reaction process,and the equipment of two kinds of acidolysis techniques applied in industrial production of titanium dioxide by sulfuric acid process（continuous acidolysis and intermittent acidolysis） were compared. Continuous acidolysis is characterized by high acid decomposition rate（more than 96%）,low acid consumption,high degree automation,small equipment occupation area,little emissions,and high waste acid recovery.Its advantages in environmental aspects,such as continuous emission of acidolysis tail gas,low sulphur content,and easy to dispose,were reviewed;furthermore,when the waste acid was concentrated to 60%,it can be returned to acidolysis process,and the waste acid reuse rate could reach 100%.Problems and solutions were illustrated in energy consumption and equipment corrosion.Titanium slag continuous acidolysis technique has wide prospect in TiO2 production by sulfuric acid process.

关 键 词：连续酸解 钛白 间歇酸解 

分 类 号：TQ110.3[化学工程—无机化工]