Where can I extract gold?

Patent technology of gold extraction and recovery 1, adsorption device 2 for recovering gold from cyanide gold-bearing wastewater, carbon fiber electrowinning tank 3 for cyanide precious solution, rapid leaching accessory device 4 for leaching gold by percolation cyanidation, direct roasting process for extracting gold from refractory primary ore 5, method for extracting gold and silver from refractory gold and silver concentrate 6, method for analyzing gold and silver content from gold-bearing materials 7, and method for purifying crude gold. Biological gold extraction method and special equipment for refractory metallurgical concentrate. A method for improving the recovery rate of silver in sulfur-bearing copper, lead, gold and silver ores 10, a liquid membrane and process for extracting gold from poor gold solution and waste gold solution 12, a rapid dissolution and purification method for crude gold or alloy12, and a pretreatment method for refractory gold concentrates such as arsenic/kloc. The method of extracting gold and silver by alkaline sulfur-oxygen pressure leaching 14, the method of extracting gold by two-stage bacterial oxidation 15, the method of extracting gold from cyanide waste residue 16, the method of preparing high-purity gold by electrolytic extraction of gold-bearing organic phase 17, the method of recovering gold from waste pulp of roasted gold concentrate 18, and cyanide-free leaching of gold-bearing substances. Comprehensive recovery of gold from iron ore 20, reduction of gold-bearing chloride solution 2 1, extraction of gold from poor cyanide leaching solution 22, cyanidation extraction of gold and silver from gold and silver minerals 23, technical method for improving silver recovery in roasting-cyanidation leaching process 24, comprehensive recovery of gold and silver from copper-bearing gold concentrate by salt roasting-cyanidation method 25, desorption and electrolytic gold with gold-bearing carbon 26, Enhanced alkaline leaching process of arsenic-bearing and sulfur-bearing refractory gold ore 27, cyanidation process of decomposing primary gold ore in temperature-controlled oxygen-doped gas pyrolysis furnace 28, gold extraction method of refractory gold concentrate 29, mixed leaching aid cyanidation leaching process 30, cyanidation leaching preparation of gold-bearing copper-zinc ore 3 1, and gold-bearing cyanide extraction additive. Formula for extracting gold and its rapid wet method for extracting gold 33, new process for refining high-purity gold by wet method 34, new assistant for extracting gold by wet-process synergistic oxidation cyanidation 35, method for extracting gold and silver from lead anode mud and recovering antimony, bismuth, copper and lead 36, method for recovering gold by using extractant with guanidine function 37, method for extracting copper, iron, gold, silver and sulfur from gold-copper mine 38, and method for recovering platinum from ammonia oxidation furnace waste 39. Method of extracting gold from alkaline cyanide solution 40, method of extracting gold with mixed oxidant for cyanide leaching 4 1, method of extracting gold without cyanide desorption 42, pretreatment method of extracting gold from refractory sulfide ore and carbonaceous ore and its special equipment 43, method of extracting silver and gold from flotation silver concentrate of refractory independent silver ore 44, new process of extracting gold from sulfuric acid residue by hydrochloric acid method 46, leaching solution extraction process 47, Mercury-free gold extraction method and equipment 48, simple method for recovering gold from waste 49, method for recovering silver, gold, antimony, copper and lead from lead anode slime 50, production process for extracting gold concentrate from gold-bearing cyanide residue 5 1, new process for recovering gold from waste carbon 52, recovery of gold from tailings slurry 53, cyanide-free electroforming of K gold products. Bromate plus bromine method for extracting gold 55, cyanide-free electroforming method for K gold products 56, rapid cyanidation method for extracting gold in autoclave 57, new process for separating gold and silver from gold mud 58, gold purification method for jewelry 59, method and equipment for recovering copper, silver, gold, lead, iron and sulfur from copper sulfide ore 60, and combined leaching of gold and silver with thioglycolic acid (salt) and thiourea. Mineral processing technology for extracting gold concentrate from gold-bearing tailings 62, method for recovering low-concentration gold 63, method for extracting gold while grinding-liquid membrane extraction 64, method for extracting gold by emulsion liquid membrane method and recovering sodium cyanide 65, method for recovering gold and palladium from waste catalyst and liquid delivery valve 66, method for extracting gold and silver by using stone-sulfur mixture 67, method for extracting gold by low-pressure hot acid leaching polyurethane foam 68, and extractant for extracting and separating gold and palladium and its application 69. Method of recovering gold from overflow water of gold mine tailings pond 70. Method for recovering gold, platinum, palladium and tellurium from copper anode mud. Non-toxic gold extraction method 72. Method for directly extracting gold from steel wool used in cyanide solution. Method for extracting silver and gold from nitric acid residue of solder anode mud 74. Method of recovering fine gold from heavy sand. Method for extracting gold by synthesis with gold selective adsorption resin 76, method for separating gold from silver 77, method for extracting metallic gold 78, method for recovering gold and silver from refractory gold ore 79, method for leaching gold and silver by chlorination with chlorine carrier 80, method for separating gold and silver from gold mud with ammonia 8 1, method for recovering gold from low-grade gold ore 82, method for producing high-purity gold with composite extractant 83 and method for recovering gold 84. Acid pretreatment of refractory gold concentrate by catalytic oxidation 85, new process of extracting gold from silver anode slime 86, new industrial production process of extracting gold by thiourea iron leaching 87, antimony gold smelting process method 88, acid leaching polyurethane foam method and device 89, method of extracting gold from gold-bearing lean solution 90, method of extracting gold from gold-bearing king water 9 1, recovery of copper and gold by low-temperature vulcanization roasting and mineral processing. The process of recovering gold from refractory gold-bearing iron sulfide concentrate 93, cyanide gold slime full wet refining process 94, refractory gold-bearing iron sulfide ore 95, adsorption flotation recovery gold 96, gold-bearing iron sulfide ore recovery gold 97, rapid determination of gold content in high-content gold sample 98, comprehensive extraction of gold, silver and copper 99, and recovery of gold from electroplating waste liquid with mercaptoamine chelating resin.