Study on the occurrence state of substances in sublimation sulfur from the tail gas of acid hydrolysis of titanium concentrate
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 af-fects 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 com-ponent 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 Fe2TiO5 phase,and a small part of the iron is distributed in the silicate phase,in the form of Fe2SiO4.Calcium is distributed in calcium sulfate and silicate phases,and exists in the form of CaSiO3.Silicon mainly exists in the form of SiO2 and silicate.Magnesium is distributed in MgTiO3 and MgFeAlO4 phases.Aluminum exists in the form of MgFeAlO4.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 sulfur-ic acid process can provide a basis for the study of condensation behavior of sublimed sulfur in the ex-haust gas of post-sequence acid-hydrolysis.
titanium concentrateacid hydrolysis exhaust gassublimation sulfuroccurrence state
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