FIELD: metallurgy.
SUBSTANCE: invention relates to plasma technology of nano-dispersed powder receiving. Method of receiving of nano-dispersed powder of alumina is implemented by oxidation of powdery elemental aluminium by oxygen in conditions of low-temperature plasma in presence of mist spray, in the capacity of which it is used water or aqueous solution of nitro-acid aluminium. Additionally liquid is sprayed at least by three streams on-the-mitre 15÷30° to driving direction of formed stream of low-temperature plasma, thermal current rate of which is from 2.0 till 3.5 kW × hour per kg of sprayed liquid. Ratio of liquid mass to low-temperature plasma mass is from 1.2 till 3.0 kg/kg. Liquid spraying is implemented by oxygen-containing gas at ratio of liquid mass to gas mass from 3 till 1.2 kg/kg under pressure from 0.2 till 0.5 MPa.
EFFECT: receiving of nano-dispersed powders of aluminium of right form.
9 cl, 3 dwg, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING FINE SILICON DIOXIDE POWDER | 2007 |
|
RU2349546C1 |
| METHOD OF PRODUCING FINE OXIDES | 1994 |
|
RU2119454C1 |
| METHOD FOR SYNTHESIS OF NANOSIZE PARTICLES OF TITANIUM DIOXIDE POWDER | 2013 |
|
RU2547490C2 |
| 0 |
|
SU1780242A1 | |
| METHOD OF LEAD (II) OXIDE PREPARATION | 0 |
|
SU1770279A1 |
| METHOD OF OBTAINING NANO-SIZE POWDER OF ALUMINIUM GAMMA-OXIDE | 2012 |
|
RU2493102C1 |
| TITANIUM NANOXIDE SYNTHESIS METHOD | 2006 |
|
RU2321543C1 |
| PROCESSING METHOD OF OIL AND/OR OIL RESIDUES | 2012 |
|
RU2503709C1 |
| METHOD OF PLASMA-CATALYTIC PROCESSING OF SOLID DOMESTIC WASTES | 2012 |
|
RU2504443C1 |
| METHOD OF PREPARING ULTRADISPERSE ELEMENT OXIDES | 1994 |
|
RU2073638C1 |
