1 results about "Direct process" patented technology

This invention discloses a one-step method for preparing magnetic vermiculite nanosheets, belonging to the field of vermiculite nanosheet preparation technology. The method includes the following steps: pretreating natural raw vermiculite powder to obtain pretreated vermiculite powder; dispersing the pretreated vermiculite powder in a liquid medium to obtain a reaction slurry; grinding the reaction slurry while simultaneously introducing oxidizing gas for in-situ oxidation and magnetic attenuation to obtain a post-reaction slurry; and post-processing the post-reaction slurry to obtain magnetic vermiculite nanosheets. This method achieves a one-step direct process from raw materials to a functional end product, significantly shortening the process flow, avoiding multiple separations, washing, and drying steps, significantly improving production efficiency, and greatly reducing energy and material consumption. It solves the technical problem that existing methods cannot achieve one-step preparation of magnetic vermiculite nanosheets.