摘要
盐酸法是继硫酸法、氯化法之后一种新型的钛白粉生产工艺,该工艺具有废物产量少、原料要求低、能够生产金红石型和锐钛型两种产品的特点。水解是盐酸法生产二氧化钛工艺的重要工序之一,不仅影响收率,还能够对产品的粒径分布、形貌、晶体结构等产生重大影响。阐述了包括常压水解、加压水解、微波水解、低温水解、连续水解、喷雾水解在内的六种盐酸法水解技术,以及各自的技术路线和基本原理,分析总结了其优缺点。经过综合比较,认为常压水解和加压水解技术实现工业化的可能性较大;微波水解和连续水解技术比较适合制备纳米锐钛型二氧化钛;而连续水解和喷雾水解技术尚未完善,还有待进一步研究。
Hydrochloric acid method is a new type of titanium dioxide production process following sulfuric acid method and chlorination method, which has the characteristics of less waste output, low requirements for raw materials, and can produce rutile and anatase. Hydrolysis is one of the important processes in the production of titanium dioxide by hydrochloric acid method. Hydrolysis can not only affect the yield, but also have a significant impact on the particle size distribution, morphology and crystal structure of the product. This paper introduces six hydrochloric acid hydrolysis technologies including atmospheric pressure hydrolysis, pressurized hydrolysis, microwave hydrolysis, low temperature hydrolysis, continuous hydrolysis and spray hydrolysis, expounds their respective technical routes and basic principles, analyzes and summarizes their advantages and disadvantages. Through the comprehensive comparison of these common hydrolysis technologies, it is considered that atmospheric pressure hydrolysis technology and pressurized hydrolysis technology are more likely to realize industrialization;Microwave hydrolysis technology and continuous hydrolysis technology are more suitable for the preparation of nanosized anatase titanium dioxide;The continuous hydrolysis and spray hydrolysis technologies are, however, not perfect and need to be further studied.
作者
于耀杰
宋悦
董仕顺
任秀莲
魏琦峰
Yu Yaojie;Song Yue;Dong Shishun;Ren Xiulian;Wei Qifeng(College of Marine Science and Technology,Harbin Institute of Technology,Weihai 264200,Shandong,China)
出处
《钢铁钒钛》
CAS
北大核心
2022年第4期28-35,共8页
Iron Steel Vanadium Titanium
基金
山东省重点研发计划(2017CXGC1002)。
关键词
二氧化钛
盐酸法
水解
偏钛酸
晶型
titanium dioxide
hydrochloric acid method
hydrolysis
metatitanic acid
crystal form
