Description
Quartz sand purification is removal of a small amount of impurities
and the high difficulty separation technique to obtain refined
quartz sand or high purity quartz sand. The purification
technologies of quartz sand at home and abroad are washing,
classifying & desliming, scrubbing, magnetic separation,
flotation, acid leaching, microbial leaching, etc..
Application
Quartz Sand beneficiation plant is suitable for quartz sand
containing iron or mica.
Beneficiation process
1.Washing and classifying desliming
The SiO2 grade in quartz sand decreases by quartz sand size
becoming finer, so washing and desliming of crude quartz sand is
necessary before next step.
2.Scrubbing
Scrubbing is the way to remove film iron and impurity minerals on
the surface of quartz by mechanical force and crush these mineral
aggregate. The quartz sand gets further purification by
classification. There are two kinds of methods rob scrubbing and
mechanical scrubbing
3.Flotation
The separation of mica and quartz is difficult, the effective
methods: anionic collector in acid condition and anionic - cationic
collector in alkaline condition. The purification of quartz sand
can reach *9% after scrubbing, desliming, magnetic separation and
flotation.
4.Acid Leaching
Dilute acid had a significant effect on removing iron and aluminum,
and concentrated acid for the removal of titanium and chromium, and
mixed acid for mineral impurity. Control various factors of acid
leaching should be based on quartz final grade requirements, and as
far as possible reduce the acid concentration, temperature and
dosage to achieve quartz purification.
