AT99192B - Process for the production of alumina. - Google Patents
Process for the production of alumina.Info
- Publication number
- AT99192B AT99192B AT99192DA AT99192B AT 99192 B AT99192 B AT 99192B AT 99192D A AT99192D A AT 99192DA AT 99192 B AT99192 B AT 99192B
- Authority
- AT
- Austria
- Prior art keywords
- hydrochloric acid
- aluminum chloride
- alumina
- production
- solution
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title description 4
- 238000004519 manufacturing process Methods 0.000 title description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 16
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical group Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 14
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 230000029087 digestion Effects 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 238000000354 decomposition reaction Methods 0.000 claims 1
- DKAGJZJALZXOOV-UHFFFAOYSA-N hydrate;hydrochloride Chemical compound O.Cl DKAGJZJALZXOOV-UHFFFAOYSA-N 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000005979 thermal decomposition reaction Methods 0.000 claims 1
- 239000013078 crystal Substances 0.000 description 6
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung von Tonerde.
EMI1.1
<Desc/Clms Page number 2>
Ferner hat man vorgeschlagen, die mit Salzsäure sehr stark gesättigte Lauge von den ausgeschie- denen Aluminiumehloridkristallen durch Verdrängen mit konzentrierter Aluminiumchloridlösung, die zweckmässigerweise von unten in die mit Salzsäure gesättigte kristallhaItigeLauge eingepresst wird, zu trennen.
Der nach vorliegendem Verfahren nur durch Eindampfen ohne Mitwirkung von Salzsäure gewonnene dicke Salzbrei ist gut filtrierbar und liefert nur eine verhältnismässig geringe Menge nicht oder schwach saurer Mutterlauge.
PATENT-ANSPRÜCHE :
1. Verfahren zur Herstellung von Tonerde aus tonerdehaltigen Rohstoffen durch Lösen des Ausgangsmaterials in Salzsäure, Ausscheiden des Aluminiumchlorids in Kristallform, Waschen der Kristalle und Erhitzen derselben unter Salzsäureabspaltung, dadurch gekennzeichnet, dass die Abseheidung der Aluminiumchloridkristalle durch Eindampfen eines Teiles der Aufschlusslösung bewirkt wird und das Waschen dieser Kristalle zunächst mit einer Lösung von Aluminiumchlorid und Salzsäure und dann mit reiner eisenfreier Salzsäure allein, erfolgt.
<Desc / Clms Page number 1>
Process for the production of alumina.
EMI1.1
<Desc / Clms Page number 2>
It has also been proposed that the alkali, which is very strongly saturated with hydrochloric acid, be separated from the precipitated aluminum chloride crystals by displacement with concentrated aluminum chloride solution, which is expediently pressed into the crystal-containing alkali saturated with hydrochloric acid from below.
The thick salt paste obtained according to the present process only by evaporation without the involvement of hydrochloric acid can be filtered easily and provides only a relatively small amount of non-acidic or weakly acidic mother liquor.
PATENT CLAIMS:
1. A process for the production of alumina from raw materials containing alumina by dissolving the starting material in hydrochloric acid, precipitating the aluminum chloride in crystal form, washing the crystals and heating them with elimination of hydrochloric acid, characterized in that the separation of the aluminum chloride crystals is effected by evaporation of part of the digestion solution and that Washing of these crystals is done first with a solution of aluminum chloride and hydrochloric acid and then with pure iron-free hydrochloric acid alone.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT99192T | 1922-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT99192B true AT99192B (en) | 1925-02-10 |
Family
ID=3618458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT99192D AT99192B (en) | 1922-07-01 | 1922-07-01 | Process for the production of alumina. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT99192B (en) |
-
1922
- 1922-07-01 AT AT99192D patent/AT99192B/en active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE1592017A1 (en) | Process for purifying crystalline salts | |
| AT99192B (en) | Process for the production of alumina. | |
| DE420802C (en) | Process for the production of tanning agents from sulphite cellulose waste liquor | |
| AT38808B (en) | Process for the separation of cobalt and nickel chloride. | |
| DE680819C (en) | Process for obtaining bromine | |
| DE131314C (en) | ||
| DE752827C (en) | Process for the production of active alumina | |
| AT65916B (en) | Process for the production of α-glycoheptonic acid. | |
| DE485137C (en) | Process for the preparation of potassium carbonate from caustic potash solutions | |
| AT73179B (en) | Process for the manufacture of a detergent for the fermentation industry. | |
| DE429722C (en) | Process for the preparation of ammonium chloride from final liquors containing magnesium chloride in potash production | |
| DE541613C (en) | Process for the production of an iron-containing, ocher-like colored body from the chloridic waste liquors from bleaching earth | |
| DE365517C (en) | Process for the production of potassium nitrate from sodium nitrate containing potassium nitrate | |
| AT134494B (en) | Process for the extraction of high-percentage potash from technical potash eyes. | |
| DE402994C (en) | Process for the production of ª ‰ -naphthothiofuran-1íñ2-dione | |
| AT126113B (en) | Process for the production of pure aluminum oxide. | |
| DE385476C (en) | Process for the extraction of pure kieserite | |
| DE537842C (en) | Process for obtaining low-water or anhydrous sulfates | |
| AT78195B (en) | Process for cleaning sugary juices and regeneration of the cleaning agent used. | |
| DE868601C (en) | Process for dewatering crystallized alumina trihydrate | |
| DE382089C (en) | Procedure for the repeated use of the same amount of soda when breaking down minerals and the like like | |
| AT21306B (en) | Process for the preparation of alumina hydrate and potassium chloride BEZW. -nitrate from alum and aluminum ores. | |
| DE413380C (en) | Process for the preparation of pure 1-nitro-2-methylanthraquinone | |
| DE241380C (en) | ||
| DE429476C (en) | Process for the preparation of barium hydroxide |