High-purity quartz sand pickling
published date: 2019/6/17
high intensity magnetic separator
PTMS MAGNETIC SEPARATOR
what is magnetic separation method for concentration of ore?
Pickling is mainly to eliminate quartz sand raw material quartz stone, diatomaceous earth carrier surface adsorption, reduce chromatographic peak delamination carrier needs to be pickled before production and processing.
The pickling method is divided into single acid pickling and mixed acid pickling. Commonly used acids include sulfuric acid, hydrochloric acid, nitric acid and hydrofluoric acid. The principle is to use quartz which is insoluble in acid (except hydrofluoric acid), and other impurity minerals can be dissolved by acid, thereby realizing a chemical treatment method for further purifying the siliceous raw material.
Pickling and purifying will produce a large amount of wastewater containing acid, high salinity, high chroma and high turbidity, especially fluorine-containing wastewater. If it is not properly treated, it will inevitably cause serious environmental pollution. Quartz sand pickling wastewater generally contains hydrogen ions, fluoride ions, solid suspended matter, heavy metal ions, etc. The difficulty in processing is how to effectively remove fluoride ions!