| Autor: |
Lovás Michal, Štyriaková Iveta, Hredzák Slavomír |
| Jazyk: |
English<br />Slovak |
| Rok vydání: |
2006 |
| Předmět: |
|
| Zdroj: |
Acta Montanistica Slovaca, Vol 11, Iss special issue 2, Pp 384-387 (2006) |
| Druh dokumentu: |
article |
| ISSN: |
1335-1788 |
| Popis: |
This contribution deals with the treatment of Slovakian eolic quartz sands by bioleaching and magnetic separation with the aim to remove iron. The X-ray study of sand patterns confirms that quartz occurs as a dominant mineral. Accompanying minerals are represented by smectite and feldspars. As to the sample of unground sand, bacterial leaching resulted in a Fe2O3 reduction to the content of 0.13 %. Similarly, in case of ground sample, the Fe2O3 content was decreased to the value of 0.19 %. Thus, biological leaching removed 60 % of Fe and by following leaching by oxalic acid total the iron removal was 70.5 %. Finally, the application of magnetic separation resulted in the total iron removal of 93 % and, in such combined way, the prepared product contained 0.024 % of Fe2O3. Achieved results on the iron removal points to the fact that the combination of leaching and magnetic separation enables to obtain a product usable in glass industry. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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