KGS--Bull. 96, Pt. 6--Feldspar and Silica from River Sands in KansasJan 3, 2008 . Previous experience with the flotation of Kansas River sand had shown that after the removal of the feldspar it was possible to float the quartz by raising the pH of the pulp to about 7 either by adding a caustic or by washing the acid out with fresh water. Very little additional amine is required to float a quartz.remove feldspar from sand,Removal of Impurities from Tailing (Quartz) - Semantic Scholarkaolin; H, hematite; F, feldspar; M, mica; C, calcite; and A, amphibole. Figure 2. The effect of pH on zeta potential of quartz and hematite. The removal of colourful and iron impurities from quartz sand could be made by using both magnetic separation and flotation method. The melting temperature was fallen by the impurities.
US6098810A - Flotation process for separating silica from feldspar .Feldspars preferably include orthoclase, hyalophane, celsian, microcline, anorthoclase, and plagioclase feldspars. In the process, a slurry containing the feed material and an aluminosilicate depressant is subjected to flotation to form a concentrate fraction (that is removed in the froth from the top of the flotation cell).Separation and Purification of Quartz from Whole RockThe following sections describe methods for obtaining clean quartz from a sample of whole rock using a combination of both . Crush rock pieces into sand‐sized grains (generally < 0.7 mm). It is necessary to put the sample ... (The vigorous shaking breaks up weaker feldspar grains.) 6. Repeat this shaker table leach step.
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