Appli ion of only magnetic separation or flotation removed a considerable part of the impurities. The chemical processing of silica sand consists of leaching with
10 Nov 2016 Keywords: silica; iron removal; ultrasound irradiation; reverse flotation; magnetic separation. 1. Introduction. Silica is an important product in
28 Sep 1999 A leaching process by using oxalic acid to remove low iron content from Recovery and separation of gallium III and germanium IV from zinc
For this, we have studied the silica enrichment process using a magnetic separation. Moreover, a leaching process by using hydrochloric acid has been studied
6 May 2013 Chemical analysis of the sample showed that iron and alumina oxides reached 0.046% and 0.044%, respectively. Dry sieving was carried out
However, physical separation techniques, such as flotation or magnetic separation, are generally less effective for iron removal than chemical lea- ching, aiming at
From this point of view silica based sorbents modified with colorless organic reagents which can form colored complexes with iron ions are very promising.