2. Ancient placer gold ore. The ancient placer gold ore is the petrified placer ore, which is composed of the petrolized gravel. The particle size of 80% ore is between 75 100 microns. And this type of ore has a high grade. Gravity separation and cyanidation is a better process for gold extraction.
Gok, O. Oxidative leaching of sulfide ores with the participation of nitrogen species A review, Journal of Ore Dressing, pp. 2229. Gökelma, M. et al. A review on alternative gold recovery re agents to cyanide, Journal of Materials Science and Chemical Engineering, 4, pp. 817. doi: 10.4236/msce.2016.48002.
Ore dressing methods fall naturally into two general subdivisions concentration methods and direct recovery methods . Concentration methods are employed to remove worthless gangue material and concentrate the valuable minerals of the crude ore in a smaller bulk.
Mineral dressing The first process most ores undergo after they leave the mine is mineral dressing , also called ore preparation, milling, and ore dressing or ore beneficiation. Ore dressing is a process of mechanically separating the grains of ore minerals from the gangue minerals, to produce a concentrate ...
Metallurgical ContentGold Leaching amp; Processing of Arsenic OreMispickel .6Leaching and Recovering Gold from Antimony MineralsStibnite Telluride Gold Ore ProcessingSolubility of TelluridesGold Extraction from Carbonaceous OreList Gold Refractory Process Methods Where gold is associated with arsenic, antimony, tellurium, and certain other minerals ...
The invention provides a special gold dissolving agent for a gold ore. The special gold dissolving agent is prepared by reacting and mixing carbonate or bicarbonate, hydroxide, permanganate, perchlorate, persulphate, ammonium salt, sodium ferrocyanide or potassium ferrocyanide.