Oxalic Acid / Hydrochloric Acid / Plastic-Lined Steel Tanks for Washing Quartz Sand
Quartz sand crushing — washing — magnetic separation — acid leaching — washing — dehydration — drying
Quartz sand acid washing is all wet acid washing, using various acids such as hydrochloric acid, sulfuric acid, oxalic acid, etc. The crushing before acid washing is all wet crushing, with some using mechanical methods like hammer crushing, resulting in a large amount of mechanical iron in the material. The reaction between mechanical iron and quartz sand in water is slow, and it usually takes several days for the mechanical iron to oxidize into trivalent iron and turn red and yellow. If the material is soaked in acid, the rate of iron oxidation in exposed air is even faster.
