pretreatment of refractory gold ore with microwaves



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Microwave energy for mineral treatment processes—a brief ,

Jul 01, 1999· This review is a brief account of R&D results generated from microwave-assisted mineral treatments tests The R&D results demonstrate that microwave energy has potential in mineral treatment and metal recovery operations such as heating, drying, carbothermic reduction of oxide minerals, leaching, roasting/smelting, pretreatment of refractory gold ore and concentrate, spent ,...

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pretreatment of refractory gold ore with microwaves

Microwave pretreatment of a double refractory gold Abstract Double refractory gold ores, such as Barrick’s Goldstrike ore, contain both pyrite and carbonaceous matter and the latter results in the loss of gold from solution during cyanide leaching One possible remedy is to roast the ore and thus oxidize the pyrite and remove the organic carbon In this research, microwave roasting of a double ....

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MICROWAVE IRRADIATION PRETREATMENT OF A REFRACTORY GOLD ,

Jan 01, 1987· Microwave energy was applied in the pretreatment of a typical refractory arsenopyritic gold concentrate More than 80% of As and S were volatilized off as As 2 O 3 and SO 2; whereas iron was oxidized mostly to hematite (Fe 2 O 3)All the gold was present in the calcine which responded favourably to the conventional alkaline cyanidation process and yielded 98% of Au and 60% of Ag ,...

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Potential pre-treatment and processing routes for recovery ,

21 Microwave pre- treatment of refractory gold ores Most of refractory gold occurs within sulphide minerals such as FeS 2 and FeAsS and are treated by roasting, pressure leaching or bacterial leaching to render the gold amenable to recovery by subsequent treatment techniques (Haque, 1987)...

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Optimizing the alkaline oxidation pretreatment of a ,

Sep 28, 2018· Sodium hydroxide was used for pretreatment of the refractory gold–silver ore from the Akoluk deposit The alkaline pretreatment process significantly improved the gold recovery from 493% to 854% Hasab et al : Combining sulfide oxidation and gold ,...

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Improvement of Gold Leaching from a Refractory Gold ,

Refractory gold ores have increasingly been the main source of gold production with the exhaustion of amenable gold or Of the 2630 tons of total world gold production in 2011, about 25% was produced from refractory gold deposits, and of the top 20 gold operations in 2011, eight were processing refractory ores [1]...

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Pretreatment of a refractory arsenopyritic gold ore using ,

Mar 01, 2015· An arsenopyrite refractory ore was pretreated with NaOH to increase gold extraction After pretreatment, gold and silver were leached with copper ammonium thiosulfate solution Thiosulfate leaching of the as-received ore extracted only 21% and 29% of silver and gold, respectively Up to 81% of the gold and 50% of the silver were recovered after ....

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Study on microwave pretreatment of refractory ,

Download Citation | Study on microwave pretreatment of refractory microdimensional gold packaged by pyrite in gold ores | By using the heating feature of microwave, it has shown from condition ....

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microwave assisted pretreatment of refractory gold ores

Aug 16, 2020· Microwave pretreatment of a double refractory 01-09-2007 With regards to the application of microwaves to refractory gold ores, Haque, 1987a, Haque, 1987b has studied the microwave pretreatment of refractory sulphidic ores and achieved gold extractions of over 98%...

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pretreatment of refractory gold ore with microwaves

pretreatment of refractory gold ore with microwaves As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including quarry, aggregate, and different kinds of minerals...

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Microwave Assisted Pretreatment Of Refractory Gold Ores

Refractory Gold Ore Treatment Methods 911 Metallurgist Aug 17 2020 pretreatment of refractory gold ore with microwaves Microwave pretreatment of a double refractory gold ore Double refractory gold ores such as Barrick’s Goldstrike ore contain both pyrite and carbonaceous matter and the latter results in the loss of gold from solution during cyanide leaching One possible remedy is to ,...

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Microwave Pretreatment Technique of Refractory Gold Ores ,

Gold is a special metal, because it is intimate correlation with national economy and people’daily life, quantity demanded is increasingGold resources of easy-handled in the world is becoming less shortening with gold resources exploited and used,so people begin gradually to develop and use refractory gold resources, especially, the gold price is persitent high, and this gives a good chance ....

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Study on Pretreatment of Refractory Gold Ore by Microwave Roasti,

Review Pretreatment Process on Refractory Gold Ores with As...

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Pretreatment Of Refractory Gold Ore With Microwaves

Microwave pretreatment of a double refractory gold ore 01/09/2007 With regards to the application of microwaves to refractory gold ores, Haque, 1987a, In this paper, microwave pretreatment of a double refractory gold ore was investigated as an alternative method and the results are compared to conventional roasting...

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Leaching of Refractory Gold Ores by Microwave Irradiation ,

Double refractory gold ores, such as Barrick’s Goldstrike ore, contain both pyrite and carbonaceous matter and the latter results in the loss of gold from solution during cyanide leaching...

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Microwave pretreatment of a double refractory gold ore ,

Sep 01, 2007· With regards to the application of microwaves to refractory gold ores, Haque, 1987a, Haque, 1987b has studied the microwave pretreatment of refractory sulphidic ores and achieved gold extractions of over 98% However, there is no information published on the microwave processing of the double refractory gold or...

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Review Pretreatment Process on Refractory Gold Ores with As

refractory gold ore8,9) Haque K E used microwave to dis-pose of arsenical pyrite and gold concentrate with pyrite, the gold leaching rate reached 98%10) Liu Quanjun etc made a test for a gold mine in Guizhou province The ore without micro-wave pretreatment could be hardly leached in cya-nide On the other hand the cyanide leaching of gold ore...

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pretreatment of refractory gold ore with microwaves

pretreatment of refractory gold ore with microwaves For each project scheme design, we will use professional knowledge to help you, carefully listen to your demands, respect your opinions, and use our professional teams and exert our greatest efforts to create a more suitable project scheme for you and realize the project investment value and ....

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Microwave pretreatment of a double refractory gold ore ,

Abstract Double refractory gold ores, such as Barrick’s Goldstrike ore, contain both pyrite and carbonaceous matter and the latter results in the loss of gold from solution during cyanide leaching One possible remedy is to roast the ore and thus oxidize the pyrite and remove the organic carbon In this research, microwave roasting of a double refractory gold ore was investigated as an ....

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Pretreatment Of Refractory Gold Ore With Microwaves

Double Refractory Gold Or Microwave pretreatment of a double refractory gold ore Double refractory gold ores such as Barricks Goldstrike ore contain both pyrite and carbonaceous matter and the latter results in the loss of gold from solution during cyanide leaching One possible remedy is to roast the ore and thus oxidize the pyrite and remove the organic carbon...

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Pretreatment of arsenic-bearing gold ore with microwave ,

Article Pretreatment of arsenic-bearing gold ore with microwave-assisted alkaline leaching January 2016; Green Processing and Synthesis 5(3)...

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microwave pretreatment of a refractory gold

Microwave pretreatment of a double refractory gold Abstract Double refractory gold ores, such as Barrick’s Goldstrike ore, contain both pyrite and carbonaceous matter and the latter results in the loss of gold from solution during cyanide leaching One possible remedy is to roast the ore and thus oxidize the pyrite and remove the organic carbon In this research, microwave roasting of a double ....

Read More
microwave pretreatment of a refractory gold

refractory gold pretreatment Microwave pretreatment of a double refractory gold ore Double refractory gold ores such as Barrick s Goldstrike ore contain both pyrite and carbonaceous matter and the latter results in the loss of gold from solution during cyanide leaching....

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Microwave Pretreatment Technique of Refractory Gold Ores ,

Gold is a special metal, because it is intimate correlation with national economy and people’daily life, quantity demanded is increasingGold resources of easy-handled in the world is becoming less shortening with gold resources exploited and used,so people begin gradually to develop and use refractory gold resources, especially, the gold price is persitent high, and this gives a good chance ....

Read More
pretreatment of refractory gold ore with microwaves

Review Pretreatment Process on Refractory Gold Ores with As refractory gold ore8,9) Haque K E used microwave to dis-pose of arsenical pyrite and gold concentrate with pyrite, the gold leaching rate reached 98%10) Liu Quanjun etc made a test for a gold mine in Guizhou province...

Read More
microwave assisted pretreatment of refractory gold ores

Aug 16, 2020· Microwave pretreatment of a double refractory 01-09-2007 With regards to the application of microwaves to refractory gold ores, Haque, 1987a, Haque, 1987b has studied the microwave pretreatment of refractory sulphidic ores and achieved gold extractions of over 98%...

Read More
pretreatment of refractory gold ore with microwaves

Microwave pretreatment of a double refractory gold Abstract Double refractory gold ores, such as Barrick’s Goldstrike ore, contain both pyrite and carbonaceous matter and the latter results in the loss of gold from solution during cyanide leaching One possible remedy is to roast the ore and thus oxidize the pyrite and remove the organic carbon In this research, microwave roasting of a double ....

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refractory gold pretreatment

Microbial Pretreatment of Refractory Gold Ore 2016-3-28 For coarse grain size of gold after crushing and grinding by flotation, gravity concentration, cyanide leaching process or several process combined treatment will be able to complete the separation of gold and gangue minerals, but there are some curing refractory gold ores due to coarse size or thin and gangue minerals symbiosis ....

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Pretreatment Process on Refractory Gold Ores with As

1 Introduction Gold ores are considered refractory if gold extractions from a conventional cyanidation process are less than 80% even after fine grinding 1) Arsenic-bearing refractory gold ore has stones extremely difficult to deal with In the stones, gold is locked up in arsenic mineral matrix as the form of microscopic or submicroscopic lattice...

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pretreatment of refractory gold ore with microwaves

Pretreatment Process on Refractory Gold Ores with As Keywords: arsenic-bearing gold ore, pretreatment process, refractory gold ore Microwave roasting is a new pretreatment to solve the problem It uses mineral...

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