| abstract |
To provide a process for producing granules of glass raw materials which have excellent strength and are less likely to form fine powder even when pneumatically conveyed to an in-flight heating apparatus and which are suitable for use in the production of glass by an in-flight melting method, and a process for producing a glass product, whereby high quality glass having a uniform composition can be obtained. A process for producing glass raw material granules for producing a borosilicate glass, which comprises a step of preparing a raw material slurry comprising glass raw materials including boric acid, and a liquid medium in which boric acid is soluble, wherein the amount of boric acid in the raw material slurry is from 5 to 30 mass % to the solid content of the raw material slurry, and the pH of the raw material slurry is at least 6.6, and a step of producing glass material granules from the raw material slurry by a spray drying granulation method. |