ENVIRONMENT-FRIENDLY AND LARGE-SCALE FLUORIDE NANOMATERIAL PREPARATION METHOD

摘要

A closed-loop and large-scale fluoride nanomaterial preparation method, comprising the following steps: dissolving an initial raw material into a water-soluble salt by using a volatile acid; performing reduction vaporization on the residual acid and recovering same; then adding an oily organic matter having a high boiling point; continuing reduction vaporization to evaporate the combined volatile acid; adding an oil-soluble fluorine source to a generated oil-soluble salt, and raising a reaction temperature to improve the crystallinity of a fluoride; separating a product from the oily organic matter after cooling, and recovering same; and repeating the process to achieve mass production. According to the method, a closed-loop process flow is used, no waste is discharged to the outside, the yield of equipment in unit volume is high, and production costs and specified asset investment are low; the product has characteristics such as a uniform particle size and good dispersion. Thus, the method is a user-friendly and environment-friendly method for preparing fluoride nanoparticles on a large scale.