Remove impurities of hydrochloric acid and nitric acid from sulfuric acid
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The removal of impurities such as hydrochloric acid and nitric acid from dilute sulfuric acid has long been a problematic issue in the industry. Our company uses a specialized liquid resin process to treat the waste acid produced by Xiamen Zijin Mining; this waste acid is 20% dilute sulfuric acid, containing 15,000–20,000 mg/l of each of hydrochloric acid and nitric acid, as well as 1,000 mg/l of fluoride ions. After treatment using our process, the concentration of hydrochloric acid drops to 78 mg/l, that of nitric acid to 15 mg/l, and that of fluoride ions to 28 mg/l – levels that fully meet the production requirements of this enterprise. Since our company does not have the necessary testing facilities, this result is based on the tests conducted by the property owner themselves. This afternoon, 5% hydrochloric acid will be removed from 30% dilute sulfuric acid.
This post will only be meaningful if the process can be shared. Of course, if technical confidentiality requires it, some key points can also be omitted.