Ferrous sulfate crystallization separation treatment method for sulfuric acid method titanium dioxide production

• Main Author: LIU SHAOHAI
• Format: Patent
• Language: Chinese; English
• Published: 09.02.2021
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention discloses a ferrous sulfate crystallization separation treatment method for sulfuric acid method titanium dioxide production. The method comprises the following steps: S1, introducing atitanium solution to be cooled, introducing a cold circulation solution into a heat exchange pipeline, and performing crystallizing and separating; S2, introducing to-be-cooled titanium liquid, introducing 55-75 DEG C circulating liquid into a heat exchange pipeline until ferrous sulfate crystals are dissolved, introducing cold circulating liquid into the heat exchange pipeline, and performing crystallizing and separating; and repeating the step S2, wherein the cold circulating liquid is water and comprises water at a temperature of 20-30 DEG C and water at a temperature of 8-15 DEG C, and thespecific operation is as follows: introducing water at a temperature of 20-30 DEG C into the heat exchange pipeline to cool the titanium liquid to be cooled to 30-40 DEG C, and introducing water at atemperature of 8-15 DEG C