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Ammoniacal thiosulphate leaching of gold finds a better substitute as it is nontoxic and environmentally safe as compared to the toxic cyanide system for gold extraction... As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.
Brand Name: Fote Machinery
Application: Ore concentrate/separator plant
Main Equipment : Jaw crusher, impact crusher, hammer crusher, flotation machine, classifier, ball mill, concentrator, etc.
Application: It is widely used in refractory materials, powder plant, metallurgy, chemical industry, energy, transportation, heating and other industries.
Rotation Speed: 0.1–5 r/min
Production Capacity: 180-10000t/d
Product Specification: Φ2.5×40m-Φ6.0×95m
Feeding Size: 0-350mm
Processing Capacity: 60-520TPH
Applied Materials: River pebbles, rocks (limestone, granite, basalt, diabase, andesite, etc.), ore tailings, artificial sand stone chips.
Feeding Size: ＜50mm
Disk Diameter: 1000-2000mm
Application Range: Coal plant
Production Capacity: 2.5-50TPH
Gold ore whose types of deposits are diverse and complex is the mineral assemblage of gold. With features of chalcophile affinity and high melting point, the gold ore includes conglomerate type, porphyry type, quartz vein type and volcanic rock type, etc.
Related Equipments: PE-750×1060 Jaw crusher , PYFB-0918 Hydraulic cone crusher and 3YK1548 vibrating screen .
Related Equipments: two PE600×900 jaw crushers, two impact crushers, two cone crushers, two sand makers and three circular vibrating screens.
River Gravel Mobile Crushing production line in Kenya is composed of FTM938E69 mobile coarse crushing station, FTM935F1214L（4YK1860） medium and fine mobile crushing and screening station.
Stone crusher plant whose design production capacity is 50-800T/H is mainly composed of vibrator feeder, jaw crusher, impact crusher, vibrating screen, belt conveyor, centralized electronic control and other equipment. Configuration of cone crusher and du
quartz with the color of black, dark gray and dark brown is a common basic volcanic rock mineral. With advantages of good corrosion resistance, compression resistance and oxidation resistance, quartz is widely used in roads, railways, construction, buildi
An improved thiosulphate leach process for the recovery of gold from ores and other goldbearing materials characterised in that the leach solution comprises thiosulphate thiourea or a reagent chemically related thereto and an oxidant that does not oxidise thiosulphate the process producing a pregnant leach solution from which gold may be recovered
The invention relates to modifications of a nonammoniacal thiosulfate process of leaching precious metals eg gold or silver from precious metalcontaining ores The process involves leaching the ore with an aqueous lixiviant containing a soluble thiosulfate other than ammonium thiosulfate a copper compound and an organic compound that serves as a copper ligand ie a ligandforming
The ammoniacal thiosulphate leaching of two gold ore samples namely Akeshi and Hishikari was carried out as a function of time and the results are given in Figure 1a In this experiment the thiosulphate and ammonia concentrations were kept at 05 and 1M respectively The solid concentrations of the ores were
At the end of the leaching process two goldthiosulfate complex solutions were obtained with gold concentrations of 3368 mg Au L −1 and 1702 mg Au L −1 24 Adsorption of gold on the PEIMNPs The PEIMNPs were utilized for recovering gold from the leaching solution
2016 A Review of Ammoniacal Thiosulfate Leaching of Gold An Update Useful for Further Research in Noncyanide Gold Lixiviants Mineral Processing and
Feb 19 2010 · The acid wash did not dissolve any gold showing that no adsorbed gold complexes were present on the mineral surfaces in the sulphide ore A gold recovery of 91 was achieved in the direct ammoniacal thiosulphate leaching with 025 M thiosulphate 1 M ammonia and 12 mM cupric ions after 24 h and 100 gold extraction was obtained at doubled ammonia and thiosulphate
Thiosulfate offers a nontoxic alternative to cyanide for processing gold ores The mechanism of leaching gold using ammoniacal thiosulfate solution is driven by the Cu IICu I redox couple and is complicated by competing ligands such as NH 3 and S 2 O 32−
The gold industry has been seeking alternative reagents for leaching gold from lowgrade ores for the past 25 years The cost and transport of cyanide the poor recovery of gold from carbonaceous ores the lack of selectivity of cyanide towards copper minerals and the cost of waste treatment are real factors which can make cyanide unattractive in some circumstances However there are also
Thiosulphate has received much attention as an alternative noncyanide lixiviant for gold recovery over the last three decades In particular a number of studies have shown that an ammoniacal