| 摘要 |
A silicon dioxide powder, produced in pyrogenic conditions, in a form of compounds of primary particles with surface area of BET from 300±25 m/g, where compounds have an average area 4800-6000 nm, average equivalent diameter from 60 to 80 nm and average size from 580 to 750 nm. The powder is produced in pyrogenic conditions, where silicon tetrachloride and the second silicic component, the content of which makes up maximum 40 mass %, which is chosen from group, containing HSiCl, HSiCl, HSiCl, CHSiCl, (CH)SiCl, (CH)SiCl and/or (n-CH)SiCl, mixed with primary air and combustion gas, and during burning supplied to the reactor chamber, besides to the reactor chamber the secondary air is supplied, and the reacting compounds are chosen in such a way, that the adiabatic temperature of flare ranges from 1390 to 1450 °С. The powder is used as filler. |
