Ammonia pretreatment for enhancement of Pb ions adsorption
17 03 2022 · Zinc oxide ores are often found in significant amounts in the weathered surface deposits of most lead zinc sulfide ore bodies For example in the Lanping area of the Yunan Province in China which has the largest lead zinc ore bodies in Asia reserves reaching more than 200 million tons of Pb Zn ore consist of approximately 30% zinc oxides