Oxalic Acid / Hydrochloric Acid / Washed Quartz Sand Steel Lined Plastic Storage Tanks

Quartz sand crushing - washing - magnetic separation - acid leaching - washing - dehydration - drying

All pickling quartz sand is wet acid pickling, using various acids such as hydrochloric acid, sulfuric acid, and oxalic acid. The crushing before pickling is all wet crushing, with some using mechanical methods like hammer crushing, resulting in a material containing a large amount of mechanical iron. 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.