Gold cyanidation - WikipediaGold cyanidation is a metallurgical technique for extracting gold from low-grade ore by . 3.1 Effect of dissolved oxygen; 3.2 Pre-aeration and ore washing . Ball-and-stick model of the aurocyanide or dicyanoaurate(I) complex anion, [Au(CN)2]−. . The Caro's acid process is able to achieve discharge levels of WAD below.gold ore acid wash ball mill,gold ore acid wash ball mill,Mineral Processing - KCGM - Super PitGolden Mile ore is of two main types: weathered oxide ore from near the surface . SAG (Semi Autogenous Grinding) and Ball Mills which look like huge steel drums. . It is washed first with hydrochloric acid followed by sodium cyanide and a.
gold ore acid wash ball mill