United States Patent 4629502 Mixing the particlized refractory gold ore with a liquid heated above ambient temperature to form a heated liquid slurry, and mixing the particlized ore with a flocculating material and fibers so as to lock the particlized ore in a stable network in the slurry and third generally vertical pressure vessels.
Sep 29, 2016 Patented process in use at Saudi Arabia mine and in Chile Flotation froth of copper concentrate during laboratory testing in Santiago, Chile Barrick has developed and patented a new flotation process that can produce copper concentrates from copper or copper-gold ores using salt or brackish water. The new process, an air-metabisulfite treatment, does not require lime or cyanide.
A process is described by which copper and optionally silver and gold are recovered from sulfide and oxide ores, concentrates or slag, which contain the metals. The particulate materials are treated with an aqueous solution of an alkali cyanide or alkaline earth cyanide, the laden solution is filtered, if desired, a water-soluble sulfide compound is added to the laden solution or filtered.
Large particles of gold ore, introduced into the pan (10), gravitate out from the pan, owing to the sloping nature of the lower portion of pan sidewall (28). Smaller particles, including small particles of gold, are trapped between spiral rib (32) and sidewall (28) and bottom wall (12) of pan (10).
Jan 29, 2020 Date of Patent April 16, 2019. Assignee Barrick Gold Corporation. Inventor Barun Gorain. Method for pre-treatment of gold-bearing oxide ores. Patent number 10161016. Abstract The disclosure relates to pre-treatment of precious metal-bearing oxide ores, prior to precious metal leaching by thiosulfate. The process comprises mixing oxide ore.
A process for extracting gold from a gold-bearing ore. The process includes, first, providing a leaching liquor with thiosulfate anion and ethylenediamine. Next, the leaching liquor is contacted with the gold-bearing ore to form a pregnant leach solution including gold dissolved from the gold-bearing ore. Finally, at least part of the gold in the pregnant leach solution is recovered.
Jul 16, 1996 A process for treatment of precious metal ores in which gold is leached from an oxidized ore slurry using a thiosulfate salt lixiviant and copper catalyst. Gold and copper are subsequently loaded onto an ion exchange resin. Copper is recovered from the resin by elution with a thiosulfate solution gold is recovered from the resin by elution with a thiocyanate colution.
What is claimed is 1. A separator for separating gold particles from gold ore, comprising a rotatable gold pan including a bottom, a frusto-conical sidewall having a small diameter inner end connected to said bottom and a large diameter outer end, a hub cup at the center of the bottom, and a spiral rib inside said pan, spiraling inwardly from the outer end of the sidewall to said hub cup.
Apr 08, 2013 A process for the extraction of gold from a gold-bearing ore or concentrate, comprising the steps of leaching the gold-bearing ore or concentrate with a lixiviant of hydrochloric acid and magnesium chloride at atmospheric pressure at a temperature of at least 90 C. and an Eh of at least 900 mV. After a liquid solids separation step, the solution obtained is subjected to an organic solvent.
The gold particles will thus separate from the remainder of the ore, and fall down upon the bottom wall 17 by this centripetal action, after which, the dump valve 20 is removed from the pipe 18, and the remaining ore of sand and gravel is flushed out of the tank, through the restrictor and pipe 18.
The Alexander Gold Property comprises 27 patented mining claims covering 448 hectares (1,107 acres) adjoining Evolution Mining’s Red Lake-Campbell Complex. The richest gold bearing ore zones exist below a vertical depth of 1,300 metres in the High-Grade Zone at the Red Lake Gold Mine, which is less than 800 metres from the property boundary.
To provide a method for pre-treating gold ore in order to recover gold from gold ore containing pyrite by means of hydrometallurgy, wherein the generation of sulfur dioxide is suppressed and the rate of recovery of the gold can also be improved. A method for pre-treating by means of hydrometallurgy in order to recover gold included in gold ore that contains 30 mass or pyrite (FeS 2.
Orezone Gold Corporation is a Canadian development company which owns a 90 interest in Bombore, one of the largest undeveloped gold deposits in Burkina Faso. The 2019 feasibility study highlights Bombore as an attractive shovel-ready gold project with forecasted annual gold production of 118,000 ounces over a 13+ year mine life at an All-In.
Sep 14, 1992 United States Patent 5290525 The standard method for recovering gold from its ores involves leaching the finely ground ore with alkaline cyanide solution to dissolve the gold. Depending on the ore being cyanided, varying amounts of metals such as copper and iron are also dissolved in the cyanide solution. After the cyanidation step, various.
Oct 14, 2021 Band-Ore Zone No. 41. 616,000. 4.84 g t. 95,668. Dr. Eric Owens, CEO and President, stated, The Band-Ore property is in an excellent jurisdiction, shares a regional shear zone with Hemlo, and has strong growth potential, as it has been underexplored for forty years. Dr. Owens added, Our focus remains on the Hawkins Gold Project, but this.
•105 Acres with multiple Lode Mines • 45 Patented Acres including Mill Site • Hard rock Mill is nearly completed and all equipment is included in the selling price • 65 Gold veins and one Ore Body have been discovered so far on multiple mining sites • $4 million has been spent on all mine development and the hard rock mill • Potential for $1 Billion or in Gold.
The Lucky Boy Property is located just outside of Oatman, Arizona. The area is well known for the production of native gold deposits on wide horizontal ore bodies. The mine, geologically, is situated on the southern side of a ridge where the Tom Reed and Telluride veins run. These veins do not have a defined terminus and are assumed to be.
Mining and Ore-Milling Patents. The following list contains the 53 patents Edison received concerning mining and ore milling. It is arranged in chronological order by execution date, which is the date on which Edison signed the application and the date in the patenting process that comes closest to the time of actual inventive activity.
Justia Patents US Patent Application for METHOD FOR RECOVERING GOLD FROM REFRACTORY ORE Patent Application (Application 20160083816) METHOD FOR RECOVERING GOLD FROM REFRACTORY ORE . Sep 16, 2015. A method of recovering gold from refractory ore containing a carbonaceous material, a sulfide and gold is provided. Gypsum seed crystals are added to.
The Gold Castle Mine (20.66 Acre Lode Mining Claim) The Gold Castle Mine lode mining claim is a 20.66 acre unpatented mining claim in the Rocky Mountains, approximately 43 miles West of Fort Collins in the Manhattan Gold Mining District of Northern Colorado. It is only a.
What is claimed is 1. In an ore washing machine, the combination of an elongate box having a bottom wall, a pair of spaced sidewalls, and a pair of spaced end walls, a plurality of horizontal screens mounted juxtaposed together in stacked relationship within the box at substantially the mid-span of the side and end walls, means forming inwardly concave surfaces for joining the bottom wall.
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. The gold dissolving agent has the advantages of rapidly dissolving metal gold, selectively leaching gold from various.
A process and system for recovery of gold from an ore having the steps of i) providing the ore containing the gold to be recovered, ii) leaching the ore in an oxidative chloride medium, including a nitrogen species to produce a solution comprising gold and iii) recovering the gold from the solution. The gold in a preferred embodiment is recovered from refractory and carbonaceous ores.
Method of recovering gold from gold ores containing pyrite - Patent CA-2908370-A1 - PubChem. National Center for Biotechnology Information. 8600 Rockville.
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