AT55402B - Process for the removal of iron from silica, kaolin and the like. - Google Patents
Process for the removal of iron from silica, kaolin and the like.Info
- Publication number
- AT55402B AT55402B AT55402DA AT55402B AT 55402 B AT55402 B AT 55402B AT 55402D A AT55402D A AT 55402DA AT 55402 B AT55402 B AT 55402B
- Authority
- AT
- Austria
- Prior art keywords
- iron
- kaolin
- silica
- acid
- removal
- Prior art date
Links
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Enteisenung von kieselsaurer Tonerde, Kaolin und dgl.
Kieselsaure Tonerde, Kaolin und dgl. kommen in der Natur gewöhnlich nicht rein vor, sondern mehr oder weniger mit Eisen versetzt. Es ist zwar bekannt, solche Materialien unter Verwendung von Salzsäure, Schwefelsäure oder schwefliger Säure zu enteisenen. Dieses Verfahren hat aber den Nachteil, dass grosse Mengen Säure erforderlich sind, die nachträglich ausgewaschen werden müssen und dass unter Wärmezufuhr gearbeitet werden muss. Für den praktischen Gebrauch sind deshalb diese Verfahren nicht benützbar, weil es sich um geringwertige Materialien handelt, die weder einen Aufwand von hohen Kosten, noch ein umständliches Verfahren zulassen.
Nach vorliegender Erfindung soll nun das mit Wasser angerührte und mit geringen Mengen von Mineralsäure versetzte Rohmaterial bei gewöhnlicher Temperatur einen Zusatz von ebenfalls nur geringen Mengen hydroschwefliger Säure oder deren Salze erhalten.
Um beispielsweise die vollständige Entfernung des Eisengehaltes vom Ton vorzunehmen, setzt man dem Rohmaterial etwa die doppelte Menge mit Mineralsäure versetzten Wasser und hydroschweflige Säure zu.
Man wird z. B. ! las 100 kg kieselsaurer Tonerde durch Zusatz von 200 kg Wasser und 200 9 hydroschwefligsaurem Natron sowie 200 9 konzentrierter Schwefelsäure (66"Be) schon im Laufe von etwa 1/2 Stunde ein vollständig eisenfreies Rohmaterial erhalten. Die überstehende Flüssigkeit kann, da sie in der Hauptsache nur eine sehr verdünnte Eisen- vitriollösung ist, ohne Verlust abgelassen werden.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the removal of iron from silica, kaolin and the like.
Silica, clay, kaolin and the like usually do not occur in nature in pure form, but more or less with iron. It is known to de-iron such materials using hydrochloric acid, sulfuric acid or sulphurous acid. However, this process has the disadvantage that large amounts of acid are required which have to be washed out afterwards and that work must be carried out with the supply of heat. For practical use, these methods cannot be used because they are low-quality materials that neither permit high costs nor a laborious process.
According to the present invention, the raw material mixed with water and mixed with small amounts of mineral acid is to receive an addition of likewise only small amounts of hydrosulphurous acid or its salts at normal temperature.
For example, in order to completely remove the iron content from the clay, about twice the amount of water and hydrosulphurous acid mixed with mineral acid is added to the raw material.
One will z. B.! read 100 kg silica alumina by adding 200 kg water and 200 9 hydrosulphurous sodium as well as 200 9 concentrated sulfuric acid (66 "Be) in the course of about 1/2 hour a completely iron-free raw material. The supernatant liquid can, because it The main thing is that only a very dilute iron vitriol solution can be drained off without loss.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT55402T | 1911-06-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT55402B true AT55402B (en) | 1912-09-25 |
Family
ID=3576896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT55402D AT55402B (en) | 1911-06-24 | 1911-06-24 | Process for the removal of iron from silica, kaolin and the like. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT55402B (en) |
-
1911
- 1911-06-24 AT AT55402D patent/AT55402B/en active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AT96802B (en) | Process for opening up boron ores. | |
| AT126124B (en) | Process for the production of titanium composition pigments. | |
| AT106692B (en) | Process for the production of alumina from alumina-containing materials of all kinds. | |
| AT102939B (en) | Process for the production of opacifiers. | |
| DE2237711A1 (en) | PROCESS FOR THE PRODUCTION OF PHOSPHORIC ACID | |
| AT106004B (en) | Process for loosening alkaline and alumina rocks. | |
| AT87674B (en) | Process for the production of low-iron ammonium aluminum sulphate from iron sulphate-containing aluminum sulphate solutions. | |
| AT98818B (en) | Artificial stone objects. | |
| DE963152C (en) | Process for the alkaline processing of metal phosphates, in particular aluminum phosphates, containing insoluble impurities in alkaline digesting agents, on alkali metal phosphate and alumina | |
| AT131552B (en) | Process for the preparation of salts of iodomethanesulfonic acid. | |
| AT121992B (en) | Process for the production of iron-free titanium dioxide. | |
| AT84169B (en) | Process for softening water. | |
| DE512820C (en) | Process for the preparation of oxyanthraquinone derivatives, in particular alizarin and its derivatives | |
| AT213849B (en) | Process for the production of alumina for metallurgical purposes | |
| DE603233C (en) | Process for processing raw kernite | |
| AT157695B (en) | Process for cleaning alkali hydroxide solutions. | |
| AT80801B (en) | Process for dewaxing residues deThe process for dewaxing residues from paraffin refining. r paraffin refining. | |
| DE576386C (en) | Production of alkali thiosulphate solutions | |
| AT105334B (en) | Process for the production of a well covering and white titanic acid from titanium ores. | |
| DE886597C (en) | Process for the production of low-iron aluminum sulphate | |
| DE526791C (en) | Process for the production of metatitanic acid | |
| DE568670C (en) | Process for the preparation of phenylcarboxamide-o-thioglycolic acids | |
| AT41307B (en) | Process for the representation of scandium respectively. Scandium compounds from minerals. | |
| DE562499C (en) | Manufacture of clay | |
| AT94982B (en) | Process for the continuous extraction of barium hydrate. |