METHOD FOR PROCESSING VANADIUM-TITANIUM MAGNETITE FINISHED ORES BY USING WET PROCESS

摘要

A method for processing vanadium-titanium magnetite finished ores by using a wet process. The method comprises the steps: extracting vanadium from vanadium-titanium magnetite finished ores and processing, by using the vanadium extraction method, obtained leaching residue by using a wet process, so as to obtain titanium; and calcining the remaining liquid extracted during the vanadium extraction, so as to prepare ferric oxide. The flow of the method is short, and the energy consumption is low, thereby avoiding waste of a titanium resource.

主权项

1. A method for preparing titanium slag by performing hydrometallurgical treatment on vanadium-titanium magnetite concentrate, comprising the following steps:
1) mixing the vanadium-titanium magnetite concentrate and a HCL solution, and leaching for 1 to 10 h at 100-150° C. to obtain an intermediate slurry, 2) filtering the intermediate slurry to obtain leaching residues, and carrying out two-stage water washing on the leaching residues, wherein a water washing time ranges from 5 min to 60 min and a water washing temperature ranges from 25° C. and 80° C. in each stage of water washing; 3) neutralizing water washing residues obtained in the step 2) with a diluted alkaline solution for 5 to 60 min at 25-80° C. adjusting the pH value of the slurry to 5-6, and filtering the neutralized slurry to obtain neutralization slag; 4) mixing the neutralization slag with a NaOH solution, and carrying out alkaline washing and desilicification reaction at 50-110° C. for 5 min to 60 min; 5) filtering a product obtained after the alkaline washing and desilicification reaction in the step 4) to obtain alkaline washing residues and carrying out water washing on the alkaline washing residues; and 6) washing the water washing residues obtained after water washing in the step 5) with diluted sulfuric acid and adjusting the pH value to 5-6, filtering after acid washing, and drying filter residues to obtain the titanium slag.