FIELD: metallurgy.
SUBSTANCE: invention relates to non-ferrous metallurgy and can be used at receiving of tungsten powder for preparation of tungsten wire. It is received alkaline silica- potassium basis by means of dissolution of silicic acid in potassium hydroxide at correlation "Ж:Т"=5.5-6.0 and boiling temperature. Received pulp is dissolved by water and neutralised by portions of hydrochloric acid up to pH=3-4 at intensive mixing up to coagulation of silicon compound. Into received basis there are introduced alloying elements.
EFFECT: it is provided simplification and acceleration of technology, reduction of material and labour expenditures.
1 tbl, 1 dwg
Title | Year | Author | Number |
---|---|---|---|
METHOD OF PROCESSING SILICA-ALUMINA STOCK | 2013 |
|
RU2574252C2 |
METHOD OF PRODUCING MICROSILICA FROM NATURAL DIATOMITE BY PRECIPITATION OF NITRIC ACID SOLUTION | 2020 |
|
RU2740995C1 |
METHOD OF COMPLEX PROCESSING ALUMINOSILICATE MATERIAL | 2007 |
|
RU2373152C2 |
METHOD OF INTEGRATED PROCESSING OF MAGNESIUM-CHROME CRUDE ORE | 2006 |
|
RU2344076C2 |
METHOD FOR PRODUCTION OF TUNGSTEN POWDER | 2008 |
|
RU2362654C1 |
METHOD OF OBTAINING FINELY-DISPERSE AMORPHOUS MICROSILICA | 2013 |
|
RU2526454C1 |
PROCEDURE FOR PREPARATION OF SULPHIDE GOLD CONTAINING CONCENTRATES TO BACTERIAL OXIDATION AT EXTRACTION OF GOLD | 2010 |
|
RU2423538C1 |
METHOD OF PROCESSING INDUSTRIAL PRODUCTS OF AFFINAGE OF PLATINUM GROUP METALS | 1991 |
|
RU2044783C1 |
METHOD OF COMPLEX PROCESSING OF SERPENTINE-CHROMITE CRUDE ORE | 2013 |
|
RU2535254C1 |
PROCESS OF PRODUCING FINELY DISPERSED AMORPHOUS MICROSILICA BY SOL-GEL METHOD | 2016 |
|
RU2625114C1 |
Authors
Dates
2009-07-10—Published
2008-05-23—Filed