FIELD: technological processes.
SUBSTANCE: invention is related to production of powder for making tungsten wire. Ammonium paratungstate is decomposed to produce blue tungsten oxide at temperature of 640-660°C without air access with exhaust of water vapors to condenser. Produced tungsten oxide is soaked in acid solution of doped components at the ratio of T:Zh= 10:3÷4 and temperature of pulp boiling till completion of evaporation, and is then reduced in atmosphere of dry hydrogen to tungsten powder in single stage at temperature of 740-780°C.
EFFECT: powder preparation with proper physical-mechanical properties.
4 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING TUNGSTEN POWDER | 2010 |
|
RU2448809C2 |
| METHOD FOR PRODUCTION OF TUNGSTEN POWDER | 1991 |
|
SU1835128A3 |
| METHOD OF PRODUCING MOLYBDENUM POWDER | 2016 |
|
RU2656124C2 |
| PREPARATION METHOD OF DOPED COMPONENTS FOR MANUFACTURING OF TUNGSTEN WIRE | 2008 |
|
RU2361315C1 |
| THORIATED TUNGSTEN WASTE RECOVERY PROCESS | 1997 |
|
RU2142656C1 |
| 0 |
|
SU1780520A3 | |
| METHOD OF MANUFACTURING TUNGSTEN POWDER | 1988 |
|
RU1540153C |
| METHOD FOR PRODUCING POWDERS OF REFRACTORY METALS | 2003 |
|
RU2243859C2 |
| NEW TUNGSTEN CARBIDE POWDER AND ITS MANUFACTURE | 2017 |
|
RU2750493C2 |
| METHOD OF PRODUCING CATALYST FOR ELECTROCHEMICAL OXIDATION OF HYDROGEN | 0 |
|
SU1727878A1 |
