FIELD: chemistry.
SUBSTANCE: invention can be used in chemical industry. Siliceous feed stock and ammonium fluoride - hydrodifluoride are mechanically mixed at room temperature until ammonia and water precipitation is stopped. Prepared charge mixture is heated up to temperature 320 - 340°C to separate gaseous ammonium hexaflourosilicate completely thereafter hydrolysed with ammonia water irrigation.
EFFECT: gas-phase process of carbon white silicone dioxide.
1 dwg, 2 ex
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