FIELD: process engineering.
SUBSTANCE: invention relates to multiple nozzle plasma tubular burner-precipitator for production of semis for optical fibres. Flow of medium is fed to the burner including initial glass material and carrier gas to allow burner lengthwise axis perpendicular orientation relative to substrate central axis. First partial flow of first gas or gas mix, in particular, precursor gas is fed from the burner bottom side and substrate via at least one nozzle extending in burner horizontal axis. Second partial precursor gas is fed via extra nozzle so that partial flows are combined nearby substrate. Burner comprises means for feeding of one doping additive with the help of precursor gas.
EFFECT: higher efficiency of silicon dioxide particles precipitation.
22 cl, 2 dwg
