YU200090A - PROCEDURE FOR OBTAINING SODIUM SILICATE - Google Patents
PROCEDURE FOR OBTAINING SODIUM SILICATEInfo
- Publication number
- YU200090A YU200090A YU200090A YU200090A YU200090A YU 200090 A YU200090 A YU 200090A YU 200090 A YU200090 A YU 200090A YU 200090 A YU200090 A YU 200090A YU 200090 A YU200090 A YU 200090A
- Authority
- YU
- Yugoslavia
- Prior art keywords
- sodium silicate
- temperature
- sio2
- molar ratio
- powdered
- Prior art date
Links
Landscapes
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
POSTUPAK ZA DOBIJANJE NATRIJUM SILIKATA, amorfni natrijum silikat sa 0,3 do 6 mas. % vode i molskim odnosom izmedju SiO2 i Na2O (1,9 do 2,8) : 1 se dobija iz rastopa stakla sa najmanje 20% mas. čvrstih materija, što se rastopina stakla i natrijumhidroksida sa molskim odnosom SiO2 : NaO (2,0 do 2,8) : 1 tretira na temperaturi od 180В°C-240В°C i pritisku od 10-30 v. Tu rastopinu izložimo u zoni sušenja sa vazduhom na temperaturi 200-300В°C 10-20s, zatim na temperaturi 90-130В°C pri čemu nastaje praškasti amorfni natrijumsilikat sa sadržajem vode (dodate pri žarenju na 700В°C) 15 do 23 mas.% i nasipnom masom od 300 g/l. Praškasti natrijev silikat se dalje tretira u koso postavljenoj aparaturi za pomeranje čvrstih materija tj. u rotacionoj cevnoj peći kroz koju prolaze dimni gasovi na temperaturi u 250-500 В°C u vremenu od 1. 60 min. Temperatura spoljneg zida rotacione peći je oko 60В°C. Dobijeni amorfni natrijum silikat se drobi pomoću mehaničke drobilice na zrna od 0,1-12 mm.PROCESS FOR OBTAINING SODIUM SILICATE, amorphous sodium silicate with 0.3 to 6 wt. % of water and the molar ratio between SiO2 and Na2O (1.9 to 2.8): 1 is obtained from a glass melt with at least 20% by weight. solids, which are a solution of glass and sodium hydroxide with a molar ratio of SiO2: NaO (2.0 to 2.8): 1 is treated at a temperature of 180V ° C-240V ° C and a pressure of 10-30 C. This solution is exposed in an air-drying zone at a temperature of 200-300V ° C for 10-20 s, then at a temperature of 90-130V ° C, whereby powdered amorphous sodium silicate with a water content (added during annealing at 700V ° C) of 15 to 23 wt. % and bulk density of 300 g / l. Powdered sodium silicate is further treated in an obliquely placed apparatus for moving solids, i. in a rotary tube furnace through which flue gases pass at a temperature of 250-500 V ° C for a period of 1. 60 min. The temperature of the outer wall of the rotary kiln is about 60V ° C. The obtained amorphous sodium silicate is crushed by means of a mechanical crusher into grains of 0.1-12 mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI9012000A SI9012000A (en) | 1989-10-25 | 1990-10-24 | Method for preparation of sodium silicates |
| HRP-2000/90A HRP921199B1 (en) | 1989-10-25 | 1992-11-06 | A process for the preparation of natrium silicates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3935464 | 1989-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| YU200090A true YU200090A (en) | 1994-09-09 |
Family
ID=47470738
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| YU200190A YU200190A (en) | 1989-10-25 | 1990-10-02 | PROCEDURE FOR OBTAINING SODIUM SILICATE |
| YU200090A YU200090A (en) | 1989-10-25 | 1990-10-24 | PROCEDURE FOR OBTAINING SODIUM SILICATE |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| YU200190A YU200190A (en) | 1989-10-25 | 1990-10-02 | PROCEDURE FOR OBTAINING SODIUM SILICATE |
Country Status (1)
| Country | Link |
|---|---|
| YU (2) | YU200190A (en) |
-
1990
- 1990-10-02 YU YU200190A patent/YU200190A/en unknown
- 1990-10-24 YU YU200090A patent/YU200090A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| YU200190A (en) | 1994-09-09 |
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