A kind of method for preparing calcium ferrite from titanium gypsum tailings

Abstract

This patent discloses a method for preparing calcium ferrite from titanium gypsum tailings. Add carbonate to titanium white wastewater, filter after the reaction, add surfactant to the filtrate, add calcium source for neutralization to obtain titanium gypsum slurry body, physical separation to obtain titanogypsum tailings; after aging, the titanogypsum tailings are added with binder, catalyst, sintering aid and reducing agent, mixed evenly, formed into balls, reduced and roasted to obtain calcium ferrite. Compared with the existing technical solutions, the method has the characteristics of low production cost, high production efficiency and good product quality.

Description

technical field

[0001] The invention relates to the field of resource utilization of industrial waste residues, in particular to high-quality utilization of titanium gypsum. In addition, this patent also relates to the treatment of industrial wastewater, specifically to the treatment of iron-containing sulfuric acid wastewater. Background technique

[0002] According to the present invention, my country is a country with large titanium resources in the world, and the mineral type is mainly ilmenite. According to the data released by the United States Geological Survey (USGS) in 2015, my country's ilmenite reserves are 200 million tons, accounting for 28% of the global reserves, ranking first in the world . There are 45 primary ilmenite deposits in China, mainly distributed in Panxi, Sichuan and Chengde, Hebei. According to the joint statistics of Titanium, Zirconium and Hafnium Branch of China Nonferrous Metals Industry Association and Panzhihua Iron and Steel Titanium Indu...

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