desilication

desilication

[dē‚sil·ə′kā·shən]
(geochemistry)
Removal of silica, as from rock or a magma.
References in periodicals archive ?
Kaolinite forms in uplands soils subjected to desilication, introduced by intense leaching processes, whereas silica and bases leached from the higher landscape positions accumulate downslope and enhance smectite formation.
Direct flotation shows us the useful and effective techniques for Desilication from diaspore bauxite [4]; Feng et al.
Clay sample from this cold region is subjected to little desilication, hence silicon concentrations is therefore stable as silicates minerals.
Studies on recovery of vanadium from desilication residue obtained from processing of a spent catalyst // Hydrometallurgy.
Furthermore, the mineralogical composition (~58% quartz, 22% hematite, 7% gibbsite, 5% goethite, 1% anatase, 1% desilication product (DSP), 1% muscovite, and 0.
Siloxy has ownership of three novel technologies: -- Desilication technology that removes silica from a by-product stream (black liquor) of the pulping process.
Skuppesavon Deposit - Mineralisation is associated with stratabound fracturing and sodium metasomatism and desilication, in north trending, steep westerly dipping, part skarnified acid meta-volcanics.
Intense chemical weathering can lead to desilication of kaolinite and subsequent formation of gibbsite (Huang et al.
The desilication in all pedons may have reached 20-30% of that found in the parent material (Table 6, Si[O.
High Al goethite may form together with gibbsite under conditions where the activity of Al is high relative to Fe, such as the advanced desilication stage of Oxisols where leaching and oxidation are dominant processes.
0) indicate the siliceous nature of these soils (Table 3) (Varghese and Byju 1993), suggesting an incomplete desilication process.
A sample of desilication product (DSP) was provided by Alcoa.