| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing colloidal silica which has a high degree of purity as far as possible at a low cost as far as possible.SOLUTION: A method for producing colloidal silica is characterized by including a silicon particle producing step (silicon wafer processing step) of obtaining silicon particles by cutting a silicon ingot into a plurality of thin sheets by using a wire saw, and a colloidal silica forming step of forming colloidal silica by mixing a basic material, the silicon particles and water. |
