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Typical autoclave operating conditions for a refractory gold process are a . temperature of 190 to 230OC, and an oxygen over-pressure of 350 to 700 kPa (50 to 100 psi). The oxidation of sulphides are strongly exothermic reactions, and the pulp density of the feed to the autoclave is calculated based on the sulphide concentration in such a. Read ...

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v116n12a9 Extraction of copper and gold from, contained Cu, Te, and Se in addition to Ag and Au Pressure leaching with sulphuric acid in an autoclave was used to remove Cu Selenium and tellurium were extracted by Na, leached first with concentrated sulphuric acid in an autoclave at 350°C under 800 kPa oxygen pressure, and then with 01 M ...

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Autoclave chemical reactions western minerals technology 2004 the extraction of ni cu and co in solution is achieved through the oxidation of the sulphide within a fivecompartment autoclave operating at temperatures of 105 c to 110 c and 1100 kpa pressure by the addition of approximately 50 kg h2so4 per ton 10 /

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Autoclave oxidation* 81 более 98 520 670 94 97.2 Albion 190 64 360 660 11 95.9 * autoclave oxidation conditions: 210 C, O 2 addition at 10 bar, oxidation for 1 h 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 ials %. n % Oxidation time, h Piryte oxidation degree Arsenopyrite oxidation level Au recovery by cyanidation

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TECHNOLOGY FOR PROCESSING OF REFRACTORY GOLD. Autoclave oxidation* 81 более 98 520 670 94 97.2 Albion 190 64 360 660 11 95.9 * autoclave oxidation conditions: 210 C, O 2 addition at 10 bar, oxidation for 1 h 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 ials %. n % Oxidation time, h Piryte oxidation degree Arsenopyrite oxidation level Au recovery by …

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Oct 02, 2012· About John has more than 30 years of laboratory and plant experience in mineral processing and hydrometallurgy. He has managed numerous R&D and engineering projects of flotation, surfactant assissted cyanide leaching, grinding and ultra-fine grinding, blinder resin in leach, pressure oxidation, and thiosulfate leaching on carbonaceous preg-robbing / sulfide …

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extracted in its original nonleaching state The system of oxidative reactions was catalyzed increasing the partial pressure of oxygen with an autoclave Table 1 Chemical composition of waste computer memory boards Element Cu wt Fe wt Ni wt Au mgkg Content 6997 0976 0873 624274 22 Gold recovery by pressure oxidation. Autoclave pressure oxidation ...

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TECHNOLOGY FOR PROCESSING OF REFRACTORY GOLD … Autoclave oxidation* 81 более 98 520 670 94 97.2 Albion 190 64 360 660 11 95.9 * autoclave oxidation conditions: 210°C, O 2 addition at 10 bar, oxidation for 1 h 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 ials %. n % Oxidation time, h Piryte oxidation degree Arsenopyrite oxidation level Au …

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L'Activox est une forme d'oxydation sous pression qui s'opère à plus faible température et pression ; par ex de 95 à 100°C et à 1 000 kPa 95 à 100ºC et 1 000 kPa Les conditions d'exploitation plus modérées simplifient les exigences techniques Ceci réduit le coût, tout en maintenant les avantages de l'oxydation sous pression ...

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Autoclave Pressure Oxidation Gold Au Grinding Mill China. Roasting is the only commercialised process in zimbabwe for the pre-treatment of refractory gold feedstocks for the subsequent cyanidation leachinghis process results in only about 75 gold recovery and is characterised by high gold values in the residue pressure oxidation process in an ...

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Autoclave Pressure Oxidation Gold Au Grinding Mill China

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TECHNOLOGY FOR PROCESSING OF REFRACTORY GOLD. Autoclave oxidation* 81 более 98 520 670 94 97.2 Albion 190 64 360 660 11 95.9 * autoclave oxidation conditions: 210 C, O 2 addition at 10 bar, oxidation for 1 h 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 ials %. n % Oxidation time, h Piryte oxidation degree Arsenopyrite oxidation level Au recovery by …