| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to the chemical industry and can be used in manufacturing substrates for catalysts, absorbing agents of active substances, thickening agents, anti-caking agents, additives to toothpastes and paper. The method of obtaining precipitated silicon oxide includes the reaction of precipitation between silicate and at least one acid with a concentrated acid, selected from the group, consisting of sulphuric acid with the concentration of at least 80 wt %, acetic acid or formic acid with the concentration of at least 90 wt %, nitric acid with the concentration of at least 60 wt %, phosphoric acid with the concentration of at least 75 wt %, hydrochloric acid with the concentration of at least 30 wt %. The obtained suspension of precipitated silicon oxide is separated by filtration, the residue is milled in the presence of an alkali metal aluminate and dried by sputtering.EFFECT: invention makes it possible to obtain precipitated silicon oxides with the physical-chemical characteristics, close to the known ones, with the reduction of an amount of consumed energy and water.12 cl, 4 ex |
