| abstract |
The present invention provides a barium sulfate spherical composite powder which is remarkably high in strength, excellent in touch, and which can realize high haze while maintaining high total light transmittance, and a manufacturing method for realizing the same. The present invention is a method for producing spherical composite powder of barium sulfate and silica, the production method comprising the step (1) of preparing a slurry containing barium sulfate particles and silica sol, and the step of spray-drying the slurry ( It is a manufacturing method of the barium sulfate spherical composite powder containing 2) and the process (3) which bakes the dried material obtained by the process (2). |