The beneficiation plant into the atmosphere pollution, mainly from the process of transporting the dust concentrator ore crushing process, dry screening, and dry separation of minerals produced; odor flotation reagent flotation plant; sulfur dioxide in the roasting plant, three Arsenic oxide, soot; mercury in amalgamation , cyanide treatment of gold ore and gold vapor, H 2 , HCN, H 2 S, CO 2 and NO 2 ; and waste ore and tailings dust Wait. Sichuan Jinhe Qihang Co,. Ltd. , https://www.jinhechemicals.com