Microsoft Word 1 География doc
Beneficiation processes of Wadi Mubarak quartz deposits
жүктеу/скачать 16,6 Mb. Pdf көрінісі
|
- Бұл бет үшін навигация:
- ҚазҰУ Хабаршысы.
| Beneficiation processes of Wadi Mubarak quartz deposits
The processing technologies have to be adapted for specific requirements of quartz raw materials. Only in the rarest instances, it is possible to use raw materials right away without some prior processing. Processing technologies therefore, play a central role in the value enhancement chain and maximum utilization of quartz. These technologies are the decisive factor in the commercial success of a deposit. Process development always starts out from chemical and physical characteristics of natural quartz. In the past, special attention was devoted to the development of the processes regarding sample preparation and procedures for the detection of trace impurities in quartz up to the ppb-area /7/. Laboratory tests must be done to figure out which process combination will lead to an optimal result at the end. ҚазҰУ Хабаршысы. География сериясы. 2010, №2 (31) 27 The beneficiation procedures applied on some of Wadi Mubarak quartz samples of variable silica content and impurities are froth Floatation followed by wet magnetic separation. The selected quartz samples were subjected to grinding processes which resulted in quartz powder of about 60 to 100 micron grain size /8/. This quartz powder was treated using froth Floatation. The froth Floatation process is selected as the result of chemical analyses of the selective raw quartz samples which show an increase of Al 2 O 3 , and loss on ignition, which reflect the presence of alkalis and mica impurities. Therefore, it is clear that the main target of the Floatation process is to remove the excess of alumina bearing minerals. The wet high intensity magnetic separation method is also used to reduce the Fe-oxides content. The description of froth Floatation and magnetic separation methods are given hereunder: жүктеу/скачать 16,6 Mb. Достарыңызбен бөлісу:
|