Laowangzhai Gold Gold Extraction Technology Research

Authors carried experiment and research of high-S gold ore that produced in laowangzhai, Yunnan. Since the gold is enwrapped in sulfide, it can't be dip out by cyanogenation. So the ore must be process and then dipped, hi this artic, the reason is mentioned, then the method of process, after this, the author give his process method-nitric acid oxidate ore. This method brings a great deal of S and second enwrapped, so the outcome is not good. If this is take out by alkali, it cannot be accepted for economic reasons. So the author uses ultrasonic for it can prevent gold from packing by S. After those steps, we can get gold from gold ore by cyanide, hi mis artic new method is also mentioned, thou it's not used. It offers a new method dealing with low-S gold ore. This technics has less pollution - than cyanogenation. After those, the author also analyses the technics in technique and economy.