钛白粉的制备方法现状及展望

doi:10.19964/j.issn.1006-4990.2021-0503

Abstract

Abstract:

The current situation and research progress of preparation methods of titanium dioxide were reviewed，and the technical characteristics of various methods were analyzed.It was pointed out that the production of rutile titanium dioxide should be based on the chlorination method.Therefore，it was necessary to strengthen the research and development of methods suitable for preparation of boiling chlorination charge from domestic high-calcium-magnesium-titanium resources in China，master the core technology of boiling chlorination production，and carry out research on the recycling of molten salt chlorination waste slag，develop a new clean molten salt chlorination process.Anatase titanium dioxide products had an irreplaceable market position in functional materials.Sulfuric acid method，hydrochloric acid method，sub-molten salt method，and fluorination method could all produce anatase titanium dioxide products，these methods also needed to solve the problems of the recycling of reagents in the production process and the comprehensive utilization of the three wastes in order to realize the green transformation of the titanium dioxide industry.

Key words: titanium dioxide, sulfuric acid method, chlorination method, reagent circulation, cleaner production

CLC Number:

TQ134.11

TANG Shuyang,GUO Yufeng,ZHENG Fuqiang,CHEN Feng,WANG Shuai,YANG Lingzhi. Present situation and prospects of preparation methods of titanium dioxide[J]. Inorganic Chemicals Industry, 2022, 54(7): 27-34.

Figures/Tables 1

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制备方法	原料	温度/℃	废渣废液	试剂循环	产品晶型
硫酸法	钛精矿、酸溶性钛渣	250	酸解残渣、废酸、酸性废水	部分硫酸可循环	锐钛型、金红石型
氯化法	金红石、高品质钛渣	800~1 000	氯化废渣、尾气处理废水	部分氯气可循环	金红石型
盐酸法	钛铁矿、钛渣	140	酸解残渣、酸性废水	盐酸可循环	锐钛型、金红石型
亚熔盐法	高钛渣、钛铁矿	450	废渣、废酸	熔盐介质可循环	锐钛型、金红石型
氟化法	钛铁矿、钙钛矿、金红石、高钛渣等	100	热水解渣	氟化试剂可循环	锐钛型、金红石型

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