无机盐工业 ›› 2024, Vol. 56 ›› Issue (10): 20-27.doi: 10.19964/j.issn.1006-4990.2024-0071
收稿日期:
2024-02-04
出版日期:
2024-10-10
发布日期:
2024-11-05
通讯作者:
邱贵宝(1972— ),男,教授,博士生导师,研究方向为多孔钛合金制备;E-mail:qiuguibao@cqu.edu.cn。作者简介:
李化全(1977— ),男,博士研究生,研究方向为钛材料制备;E-mail:lihuaquan1229@163.com。
基金资助:
LI Huaquan1,2(), QIU Guibao2(
), LÜ Xuewei2
Received:
2024-02-04
Published:
2024-10-10
Online:
2024-11-05
摘要:
TiO2具有优异的白度、消色力等颜料性能,是物理、化学性质稳定的功能材料。综述了工业生产TiO2制备方法的现状和研究进展,分析各种制备方法的优势、劣势和发展前景。硫酸法能制备锐钛型和金红石型二氧化钛,并且可以制备不同类型的功能材料产品,氯化法只能制备金红石型产品,硫酸法与氯化法将会长期共存。氯化法中的熔盐氯化技术与中国的钛资源现状更加契合,沸腾氯化法的技术瓶颈和对高钛渣原料的严苛要求是下一步中国二氧化钛行业面临的急需解决的问题。新工艺技术中盐酸法对原料的要求简单,能够生产不同晶型和性能的TiO2,最具有工业化发展前景。今后,各种工业制备方法的发展方向必须向清洁、绿色、低碳和废物综合利用的方向发展,以满足日益严苛的环保要求和国内钛资源现状。
中图分类号:
李化全, 邱贵宝, 吕学伟. 二氧化钛制备技术研究进展[J]. 无机盐工业, 2024, 56(10): 20-27.
LI Huaquan, QIU Guibao, LÜ Xuewei. Research progress of titanium dioxide preparation technology[J]. Inorganic Chemicals Industry, 2024, 56(10): 20-27.
表2
硫酸法、氯化法和盐酸法生产工艺比较[8]
项目 | 硫酸法 | 氯化法 | 盐酸法 |
---|---|---|---|
原料 | 要求低,钛铁矿和酸溶性钛渣即可满足生产要求,但是要求铬、钒等金属元素含量低 | 要求高,钛铁矿/白钛石(仅Chemours可以使用),金红石,氯化钛渣,对杂质和细度等要求严苛 | 要求低,低品位的含钛矿物即可满足生产要求,对杂质元素无要求 |
产品类型 | 锐钛型+金红石型 | 金红石型 | 锐钛型+金红石型 |
生产技术 | 成熟 | 国外对中国进行技术保密,技术门槛高,工艺技术复杂 | 不成熟 |
产品质量 | 精细控制,可得到与氯化法相近的产品 | 产品质量好,具有天然的技术优势 | 有待验证 |
其他辅助原料 | 易得到 | 配套氯气最优,石油焦、氧气、氮气等要求较高 | 盐酸、萃取剂等 |
污染与三废处理 | 量大,硫酸盐为主,能够处理,隐患较小 | 量小,氯化物为主,以深井填埋为主,隐患大 | 量小,部分可循环 |
安全性 | 规范操作,安全风险小 | 高温高压,安全风险大 | 安全风险小 |
投资强度 | 较低,设备成熟,易于制作 | 高,设备复杂,要求高,核心设备需要进口,国内部分材料不能满足要求 | 较低,设备材质要求高 |
能耗 | 电耗在1 000 kW·h左右 | 电耗在1 000~1 500 kW·h左右 | 电耗较硫酸法和氯化法低 |
人力水平 | 人力水平高,间歇式 | 人力水平低,实现连续生产,要求人力素质高 | 人力水平低,部分可实现连续化作业 |
其他运营成本 | 蒸汽和水的需求高,排放量大,需要渣场堆放 | 部分副产废物资源可以循环利用,部分可以转化为其他产品 | 能将钛铁矿夹杂的元素变为产品,排放量小 |
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