pressure oxidation of refractory ore
pressure oxidation of refractory ore
Recovery Refractory Resources
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options for refractory gold ores: roasting; pressure oxidation; bio-oxidation; and , In roasting, pressure oxidation and bio-oxidation, the iron sulphide minerals are oxidised to create sulphur dioxide (SO 2) gas in the case of roasting, or sulphate ions in pressure oxidation and bio-oxidation The iron component is...

ALTA Gold 2012 E
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options for treating more complex ore bodies as the less refractory ores become depleted Demonstration of economic treatment options allows gold companies to maintain and increase their , leaching to the aggressive conditions found in pressure oxidation The gold and sulphur (sulphides and elemental sulphur) grades relate ,...

Iodide Pressure Oxidation Gold Leaching
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The pressure oxidation process is especially suitable for the sulfide type of refractory or It includes two stages of operation First, the refractory ore is subjected to an autoclave oxidation...

autoclave gold recovery plant
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Apr 19, 2013· The Goldstrike Autoclave Plant Design, Commissioning And Operation , plant is designed for the pressure oxidation of 1363 t/d (1500 stpd) of refractory gold ore , design of the splash/flash system of heat recovery and the control systems...

Pressure Oxidation Refractory Gold
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pressure oxidation refractory gold Gold extraction - Wikipedia, the free encyclopedia A "refractory" gold ore is an ore that is naturally resistant to ....

Pressure Oxidation Base Metal and Solid
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process for difficult gold ores could open up refractory gold processing opportuniti Kell Platinum Process Flow Schematic , and capital costs for the pressure oxidation are higher than biological oxidation Furthermore, there is a recovery benefit with pressure oxidation Owing to the lower capital costs, availability of specialised ....

Gold extraction
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Gold extraction refers to the processes required to extract gold from its or , Pressure oxidation; Albion process; The refractory ore treatment processes may be preceded by concentration (usually sulfide flotation) , Pressure oxidation is an aqueous process for sulfur removal carried out in a continuous autoclave, operating at high ....

Pressure Oxidation Overview
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An overview of the pressure oxidation of refractory gold ores is provided in this chapter...

high pressure oxidation refractory
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Pressure oxidation's wiki: Pressure Oxidation is a process for extracting gold from refractory oreThe most common refractory ores are pyrite and arsenopyrite, which are sulfide ores that trap the gold within them Refractory ores require pre-treatment before the gold can be adequa...

Treatment of Refractory Gold Ores
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Treatment of Refractory Gold Ores Extractive Metallurgy Once the cause has been identified, there are a number of alternatives for treating the ore Firstly, the gold can , PRESSURE OXIDATION Pressure oxidation tests are carried out in a stirred 2L Parr bench-scale autoclave, which...

US4552589A
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In the pressure oxidation step of the present invention, oxygen consumption is dependent upon the refractory nature of the ore In the present example, it is assumed that a range from about 030 to about 185% sulfide sulfur, with an average level of 107%, is present in the gold-bearing ore...

Pressure oxidation
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Pressure Oxidation is a process for extracting gold from refractory ore The most common refractory ores are pyrite and arsenopyrite, which are sulfide ores that trap the gold within them Refractory ores require pre-treatment before the gold can be adequately extracted...

hydrometallurgy of refractory gold extraction pdf
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A "refractory" gold ore is an ore that is naturally resistant to recovery by standard , Chat Now OXIDATION OF REFRACTORY GOLD CONCENTRATES AND SIMULTANEOUS ....

Pressure oxidation of pyrite
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The refractory ore must be destroyed or attacked by chemical means with the use of oxidative processes, such as oxidation by roasting [2], pressure oxidation [3], bio-oxidation [4], and ultrafine ....

oxidation of refractory minerals
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oxidation of refractory minerals in angola oxidation of refractory minerals in angola pressure oxidation mining sgs gold extraction or recovery from its ores may require a combination of comminution, ....

Biooxidation
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Researchers about biooxidation "In refractory ores, small particles of gold are covered by insoluble sulfides impeding the contact between cyanide and gold In this case, a pretreatment stage must be considered, such as pressure oxidation, chemical oxidation, roasting or bio-oxidation, the latter currently being the alternative of choice...

Gold mineral processing
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Treatment of refractory gold ore (whole ore and flotation concentrates) has become more prominent since the 1980s, with many gold discoveries often including ores that are wholly or partially refractory Refractory pre-treatment processes include pressure oxidation, biological oxidation and various forms of roasting Design teams familiar ,...

Characterization of ferric arsenate
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106 which would result from the pressure oxidation of refractory gold ores and to assess their 107 solubiliti In addition, three residue samples from industrial gold processing operations...

Autoclave Technology
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Solutions Every autoclave and preleach circuit is a custom design, based on the experience and expertise of the design team With the right innovative and proprietary equipment designs, your pressure-oxidation needs can be effectively met...

US5536297A
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A process for recovering gold in which an ore slurry of refractory sulfidic and refractory carbonaceous ore having preg-robbing characteristics due to the presence of organic carbon is subjected to pressure oxidation in an autoclave...

Pressure oxidation overview
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The utilization of a pressure-oxidation circuit to treat refractory gold ores or concentrates is a complex decision, taking into consideration capital costs, operating costs, gold recovery, and environmental impacts...

Pressure Oxidation
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Pressure Oxidation (POX) is a process used to extract gold, copper, zinc, molybdenum, and uranium from refractory ore bodi...