In heap leaching, how is the cyanide concentration controlled, how is the dosage controlled, and how is it measured?

 The optimal range for reagent concentration is generally between 0.2 and 7 parts per thousand. Silver nitrate testing is simple and fast, and it is used to adjust the dosage based on the test results. It’s recommended to add a small amount each time and repeat the process, rather than adding a large amount all at once.