Anyone who knows quartz sand knows that quartz sand is widely used and is a non-metallic mineral raw material. The purification of quartz sand is difficult. Quartz sand mainly contains some other impurity minerals, including iron-containing impurity minerals: goethite, hematite, limonite, ilmenite, pyrrhotite, tourmaline, amphibole, biotite, etc. The presence of these impurities greatly reduces the use value of quartz sand, so it is very important to remove iron from quartz sand.
In recent years, the research of quartz sand purification and deep 
mainly focuses on mineral processing and purification (physical method, chemical method, biological method and combined purification method), silicon powder processing (ultrafine grinding, spheroidization) and surface modification.
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