Acid Washing Of Silica

In the process of washing activated carbon, a dilute hydrochloric acid solution 3 is circulatedpumped into the elution column.The acid dissolves inorganic foulants such as calcium carbonate, magnesium and sodium salts, fine ore minerals such as silica, and fine iron particles.The carbon acid wash cycle takes about 4.30 hours.Acid washing may also help in removing some of the.