Abstract
Removal of impurities (iron in particular) from quartz using aqueous chemical processes is important for its potential use in many industries including detergent, ceramics, paint, refractory, metallurgy and, in particular, glass and electronic industries to fulfill the desired requirements by these industries for high quality quartz as raw material. In this study the removal of impurities, iron in particular, from the quartz ore by physical and chemical methods with the aim of producing high quality quartz with desired specifications were investigated on laboratory scale. Impurities with magnetic properties were removed by high field intense magnetic separator and in leaching tests, the influence of various factors including the performance of acids, reagent type/concentration, temperature, leaching time and solid/liquid ratio and extent of the removal of iron were studied. After the experimental studies with quartz sample, Fe 2 O 3 content was decreased to 37,8 ppm from 400 ppm, whiteness index was also increased to 96,81 from 87,43.
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