08-08-2023 дата публикации
Номер: CN116553608A
Принадлежит:
The invention relates to a titaniferous solution hydrolysis process and device in the technical field of titanium dioxide production through a sulfuric acid method, and the process comprises the steps of primary boiling, primary boiling keeping and ash change, induced curing, secondary boiling, secondary boiling keeping and water addition for dilution. Hydrolysis is carried out in a time-sharing and step-by-step indirect steam heating and direct steam heating combined mode, the heat transfer efficiency can be guaranteed, the problem that in the prior art, the particle size distribution of hydrolyzed metatitanic acid is poor can be effectively solved, operation is easy and convenient, and the pigment performance of a product can be improved; the device comprises a hydrolysis tank body, an indirect steam heating assembly is arranged in the hydrolysis tank body, and the indirect steam heating assembly comprises a first steam inlet pipe, a steam discharging pipe, a plurality of vertically-arranged ...
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