钛精矿酸解尾气升华硫中物质赋存状态的研究  

Study on the occurrence state of substances in sublimation sulfur from the tail gas of acid hydrolysis of titanium concentrate

作　　者：李平 全学军[1] 李礼 王海波 陈新红 齐学强 李纲 向泉锦 Li Ping;Quan Xuejun;Li Li;Wang Haibo;Chen Xinhong;Qi Xueqiang;Li Gang;Xiang Quanjin(School of Chemistry and Chemical Engineering,Chongqing University of Technology,Chongqing 400054,China;State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization,Panzhihua 617000,Sichuan,China;Pangang Group Chongqing Titanium Industry Co.,Ltd.,Chongqing 400054,China)

机构地区：[1]重庆理工大学化学化工学院,重庆400054 [2]钒钛资源综合利用国家重点实验室,四川攀枝花617000 [3]攀钢集团重庆钛业有限公司,重庆400054

出　　处：《钢铁钒钛》2024年第1期84-90,共7页Iron Steel Vanadium Titanium

基　　金：钒钛资源综合利用国家重点实验室开放基金课题(2022P4FZG10A)。

摘　　要：目前使用硫酸法钛白工艺生产二氧化钛的厂家面临酸解尾气中升华硫堵塞管道问题,从而影响该工艺生产连续性,而目前对酸解尾气中升华硫的组成、结构、物质赋存状态以及升华硫冷凝行为缺乏认识。采用XRD、SEM和EDS对工厂升华硫粉及其中所含物质的结构、组成、主要元素分布及杂质元素的赋存状态进行了研究。结果表明,升华硫粉主要成分为S8,其中主要杂质元素有O、Fe、Ti、Si、Ca、Mg、Al、Mn和V等,且绝大部分钛和铁分布在钛铁矿和Fe_(2)TiO_(5)相中,少部分铁分布在硅酸盐相中,以Fe_(2)SiO_(4)形式存在;钙分布在硫酸钙和硅酸盐相中,并以CaSiO_(3)形式存在;硅主要以SiO_(2)和硅酸盐形式存在;镁分布在MgTiO_(3)和MgFeAlO_(4)相中;铝以MgFeAlO_(4)形式存在;锰以金属氧化物的形式分布在钛铁矿中。对硫酸法钛白酸解尾气中升华硫的赋存状态进行研究,可为后续酸解尾气中升华硫的冷凝行为研究提供基础。At present,the manufacturers of titanium dioxide produced by sulfuric acid process titanium dioxide face the problem that sublimed sulfur in the acid hydrolysis tail gas clogs the pipeline,which affects the continuity of the production of titanium dioxide by this process.In this paper,XRD,SEM and EDS characterizations were used to study the structure,composition,distribution of main elements and occurrence of impurity elements in factory sublimed sulfur powder.The results show that the main component of sublimed sulfur powder is S8,in which the main impurity elements are O,Fe,Ti,Si,Ca,Mg,Al,Mn and V,and most of the titanium and iron are distributed in the ilmenite and Fe_(2)TiO_(5) phase,and a small part of the iron is distributed in the silicate phase,in the form of Fe_(2)SiO_(4).Calcium is distributed in calcium sulfate and silicate phases,and exists in the form of CaSiO_(3).Silicon mainly exists in the form of SiO_(2) and silicate.Magnesium is distributed in MgTiO_(3) and MgFeAlO_(4) phases.Aluminum exists in the form of MgFeAlO_(4).Manganese is distributed in ilmenite in the form of metal oxidation.The study of the occurrence state of sublimed sulfur in the exhaust gas of titanium dioxide acid-hydrolysis by sulfuric acid process can provide a basis for the study of condensation behavior of sublimed sulfur in the exhaust gas of post-sequence acid-hydrolysis.

关 键 词：钛精矿 酸解尾气 升华硫 赋存状态 

分 类 号：TF823[冶金工程—有色金属冶金]