Quartz sand purification is to remove a small amount or trace impurities in quartz sand, to obtain refined quartz sand or high purity quartz sand difficult separation technology, quartz sand purification process mainly includes washing, classification desliming, scrubbing, PTMS magnetic separator separation, flotation, acid leaching, microbial leaching and so on.
The grade of SiO2 in quartz sand decreases with the grain size of quartz sand becoming fine, while the grade of impurity minerals is on the contrary. This phenomenon is particularly obvious in quartz sand containing a large number of clay minerals, so it is very necessary to wash and desilm quartz sand raw ore before separation by PTMS magnetic separator.
Scrubbing is to remove the thin film iron and mud impurity minerals on the surface of quartz sand by means of mechanical force and grinding and stripping force between sand grains, and further wipe the unformed mineral aggregates, and then achieve the effect of further purification of quartz sand by PTMS magnetic separator through grading operation.
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