pretreatment of refractory gold ore with microwaves
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pretreatment of refractory gold ore with microwaves

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 ores.

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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 roast the ore and thus oxidize the pyrite and remove the organic carbon.

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MICROWAVE IRRADIATION PRETREATMENT OF A REFRACTORY

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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Pretreatment Of Refractory Gold Ore With Microwaves

Double Refractory Gold Ores. 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 Process on Refractory Gold Ores with As

Kyuesi and Haque, etc. have studied the role of microwave in the gold extraction process of arsenic-bearing refractory gold ore. 8,9) Haque K E used microwave to dispose 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 ...

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pretreatment of refractory gold ore with microwaves

Microwave pretreatment of a double refractory gold ore. 2007. 9. 1. Nanthakumar et al., 2007 56,investigated microwave roasting of a double refractory gold ore as an alternative method and the results were compared to those obtained by conventional roasting.

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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

More

Pretreatment Of Refractory Gold Ore With Microwaves

Double Refractory Gold Ores. 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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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 increasing.Gold 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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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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pretreatment of refractory gold ore with microwaves

The microwave pretreatment processes of refractory gold ores in solid and slurry, and effects of the microwave. This page is about pretreatment of refractory gold ore with microwaves in johannesburg gauteng south africa, click here to get more infomation about .

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Review Pretreatment Process on Refractory Gold Ores with As

refractory gold ore.8,9) 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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microwave pretreatment of a refractory gold

Feb 21, 2021  pretreatment of refractory gold ore with microwaves. microwave pretreatment of a refractory gold. Microwave pretreatment of a double refractory gold ore Also, the one by Nanthakumar et al, where successful results with a double refractory gold ore (one of the most difficult to process) are presented [14], or the one by . More

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Leaching of Refractory Gold Ores by Microwave Irradiation ...

Dec 10, 2013  The present paper attempts to assess the effects of microwave irradiation on the leachability of refractory gold ores. Characteristics of the crystal structure and microstructure of the ores were determined by x-ray structural analysis (XRD) and scanning electron microscopy (SEM) before and after microwave irradiation. Compared to conventional processes, microwave leaching

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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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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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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 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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pretreatment of refractory gold ore with microwaves

Refractory Gold Ore Treatment Methods. Download Citation on ResearchGate 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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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 ...

More

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 increasing.Gold 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 ...

More

pretreatment of refractory gold ore with microwaves

The microwave pretreatment processes of refractory gold ores in solid and slurry, and effects of the microwave. This page is about pretreatment of refractory gold ore with microwaves in johannesburg gauteng south africa, click here to get more infomation about .

More

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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Study on Pretreatment of Refractory Gold Ore by Microwave ...

Microwave roasting method was applied for the pretreatment of refractory gold ore (RGO). The occurrence,phase of gold and microstructure of roasted product were analyzed. The results showed that gold existed in tiny granular gold and sub-micro grain gold,the occurrence form of gold was mainly in gold-bearing sulfides and gold-bearing quartz. So pretreatment was required to break gold-bearing ...

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pretreatment of refractory gold ore with microwaves

microwave pretreatment of a double refractory gold ore. 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.

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%.

More

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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Treatment of Refractory Gold Ores SpringerLink

Abstract. Problem ores that yield low (say less than 80%) gold recovery by cyanidation when “normally ground” are defined as refractory. The term, as well as the technical methods used to treat such ores, are relatively new. Rose and Newman’s very comprehensive book, The Metallurgy of Gold, does not even contain the term refractory in its ...

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The reasons of gold refractory, Gold ore classification ...

Nov 28, 2016  The reason of the gold mineral refractory There are so many types of reasons that caused the difficulty of gold ore processing, including physical element, chemical element, and mineralogical element.

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Leaching of Refractory Gold Ores by Microwave Irradiation ...

Dec 10, 2013  The present paper attempts to assess the effects of microwave irradiation on the leachability of refractory gold ores. Characteristics of the crystal structure and microstructure of the ores were determined by x-ray structural analysis (XRD) and scanning electron microscopy (SEM) before and after microwave irradiation. Compared to conventional processes, microwave leaching

More

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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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 ores. 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 Refractory Gold Ore With Microwaves

Pretreatment Of Refractory Gold Ore With Microwaves. Gold-containing ores having refractory sulfidic matter or a combination of refractory sulfidic matter and refractory carbonaceous matter are processed to recover their gold values. The process uses an ore roasting procedure that utilies a two-state fluidied bed roaster. Get Price List Chat Online

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