Method for iron removal and white turning of variegated clay mineral by solid phase reaction

The invention provides a method for iron removal and white turning of variegated clay mineral by a solid phase reaction. The method for iron removal and white turning of the variegated clay mineral bythe solid phase reaction comprises the following steps: mixing naturally-produced iron-rich clay mineral powder with acid, a reducing agent and a complexing agent, carrying out ball-milling treatmentfor 1 to 6 h, then carrying out roller treatment for pressing so as to obtain a thin sheet with a thickness of 1 to 3 mm, carrying out a reaction at 80 to 160 DEG C for 4 to 12 h, and carrying out complete washing, separation, drying and crushing treatment so as to obtain a white nanosilicate product. According to the invention, by adoption of a simple, green, environmentally-friendly and high-efficiency solid phase reaction process for iron removal and white turning of the variegated clay mineral with rich reserves, low grade and deep color in nature, after the variegated clay mineral turnswhite, an obtained product