To: IngotWeTrust who wrote (2688 ) 8/2/2002 5:50:15 PM From: E. Charters Respond to If the concentrate is fairly rich and the gold is hard to get out, as in being fairly fine, and also tied up in arseno and pyrite, or a silver concentrate in galena, I know of a way, without cyanide, to fairly cheaply and safely take out 99% of the gold and silver in a day or so. This is perhaps 35% greater to double the recovery most people can get from a concentrate. It could be used profitably with concentrates as weak as 3 ounces to the ton. (I don't think costs would exceed 200 dollars per ton, but I admit that I have not fully tested the cost factors.) Effluent that is harmful is fairly benign and that is nitrates, but we are talking very low volume so dilution would take care of it. The process uses three commonly available cheap salts and either uses power or not. It was not known to modern science until a few years ago, but was used by the Peruvian Indians 500 years ago. I don't know if I want to give the process away, gratis, as it is too specialized and will no doubt make money for the user. I would consider making and selling kits of the chemicals and reactor for the safe utilization of the process. It does make some fumes that should be dissipated in a flue and to open air. The vessels should be a certain construction and it needs Ph testing to operate properly. The time to dissolve is variable and it can use constant stirring, pumping and/or air injection, which has to be carefully rigged with non corrosive materials and actuation.
