Method and device for producing titanium dioxide by sulfuric acid method based on waste acid initiation solutions with different concentrations

The invention discloses a sulfuric acid method titanium dioxide production method and device based on different concentrations of waste acid initiation solutions, and belongs to the technical field of inorganic chemical titanium dioxide production, the method comprises the following steps: adding concentrated sulfuric acid into a premixing tank, and adding quantitative titanium ore powder while stirring to obtain an acid-ore mixture; feeding the acid-ore mixture into an acidolysis pot, and then adding waste acid to initiate an acidolysis main reaction; after the acidolysis main reaction is completed, curing, leaching and reducing; the device comprises a concentrated sulfuric acid metering tank, a titanium ore powder metering bin, a premixing tank, an acidolysis pot, a waste acid metering tank, a waste acid transfer tank, a waste acid transfer pump, a waste acid tank, a waste acid pump and a waste acid flowmeter. According to the method for correspondingly changing the quality of the waste acid and the concent