Preparation method for manually synthesized fluorophlogopite

The invention relates to a preparation method for manually synthesized fluorophlogopite. The preparation method comprises the following steps: (1) preparing raw materials, wherein the molar ratio of SiO2, MgO, Al2O3, K2CO3 and K2SiF6 in the raw materials is as follows: SiO2: MgO: Al2O3: K2CO3: K2SiF6=(16-a): 18: 3: (1-a): (2+a), and a is greater than or equal to 0.1 but less than or equal to 0.5; (2) bricking a furnace body and mounting an electrode; (3) filling the uniformly mixed raw materials into the furnace body; (4) electrifying to smelt the raw materials in the furnace body; (5) cutting off power and naturally cooling and separating out crystals; and (6) opening the furnace and taking out manually synthesized fluorophlogopite. By optimizing the raw material formula, the high-quality manually synthesized fluorophlogopite is synthesized; and the prepared manually synthesized fluorophlogopite does not contain other crystals, meets the pearl package requirement, and is clear, transparent, flexible, complete in crystal, large in crystal plates and good in dielectric properties.