Wu Bo

TL;DR: A production method of silicon dioxide for toothpaste includes the steps: a) leading tap water into a production water tank and disinfecting the water; b) preparing sodium silicate solution by the disinfected water; c) filtering the silica suspension liquid obtained in the step b) by the water disinfected in step a), washing, drying and crushing filtered precipitates to prepare a precipitated silica product, packaging the precipitated product in a packaging room and discharging the product from warehouse; d) recycling the sodium sulfate solution filtered in step c) into the step