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microwave pretreatment of a refractory gold

Microwave pretreatment of a double refractory gold ore

Download Citation 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

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Microwave pretreatment of a double refractory gold ore

Sep 01, 2007The microwave roasting of a double refractory gold ore was investigated. The TGA results showed that the three major reactions involved in the roasting process were; oxidation of pyrite, oxidation of the carbonaceous matter and the decomposition of carbonates.

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Cited by: 103

Microwave pretreatment of a double refractory gold ore

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 alternative method and the results were compared to those obtained by conventional roasting.

get price
Cited by: 103

Microwave pretreatment of a double refractory gold ore

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 alternative method and the results were compared to those obtained by conventional roasting.

get price

Pretreatment Microwave Pretreatment Of A Refractory Gold

Microwave pretreatment of a double refractory gold ore One possible remedy is to roast the ore and thus oxidie the pyrite and remove the organic carbon In this research microwave roasting of a double refractory gold ore was investigated 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

Jan 01, 1987Microwave 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

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Cited by: 17

microwave pretreatment of a refractory gold

The microwave pretreatment of a typically refractory flotation gold concentrate was investigated The results demonstrated that a maximum gold recovery of 97% was achieved and that gold recoveries of the refractory gold concentrate quickly increased to the maximum with microwave heating time Adding additives during microwave heating process was

get price
4.6/5

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

get price

MICROWAVE IRRADIATION PRETREATMENT OF A REFRACTORY GOLD

Jan 01, 1987Microwave 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

get price

pretreatment microwave pretreatment of a refractory gold

Microwave pretreatment of a double refractory gold . 2020-7-20 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.

get price

Experimental Study on Microwave Pretreatment with some

The microwave pretreatment of a typically refractory flotation gold concentrate was investigated. The results demonstrated that a maximum gold recovery of 97% was achieved, and that gold recoveries of the refractory gold concentrate quickly increased to the maximum with microwave heating time. Adding additives during microwave heating process was helpful to improve the leaching rate of gold

get price

microwave pretreatment of a refractory gold

The microwave pretreatment of a typically refractory flotation gold concentrate was investigated The results demonstrated that a maximum gold recovery of 97% was achieved and that gold recoveries of the refractory gold concentrate quickly increased to the maximum with microwave heating time Adding additives during microwave heating process was

get price

pretreatment of refractory gold ore with microwaves

Pretreatment Process on Refractory Gold Ores with As. Jun 24, 2017 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

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Microwave roasting of flash flotation concentrate

Jun 01, 2020Nanthakumar et al. (2007) investigated the use of microwave energy in pretreating a double refractory gold ore containing 1.56% sulphur and 5.96% total carbon. Wei et al (2009) applied microwave energy in a similar pretreatment of refractory gold ores and reported improvements in the subsequent gold extraction.

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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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Microwave Heating Applications in Mineral Processing

Dec 10, 20112.5. Microwave assisted pretreatment of refractory gold concentrate. Gold is considered to be refractory when it cannot be easily recovered by alkaline cyanide leaching. The vast majority of refractory gold occurs in sulphidic minerals such as pyrite (FeS 2), arsenopyrite (FeAsS) and pyrrhotite (FeS).

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Refractory Gold Ore Treatment Methods

Metallurgical ContentGold LeachingProcessing of Arsenic OreMispickel (Arsenopyrite: FeAsS).6Leaching and Recovering Gold from Antimony MineralsStibnite (Antimony Sulphide, Sb2S2)Telluride Gold Ore ProcessingSolubility of TelluridesGold Extraction from Carbonaceous OreList Gold Refractory Process Methods Where gold is associated with arsenic, antimony,

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Optimizing the alkaline oxidation pretreatment of a

Sep 28, 2018Microwave pretreatment: Biooxidation (BIOX) pre-treatment of refractory gold concentrates using mixotrophic and chemolithotrophic bacteria on the gold extraction during cyanidation indicated 91.4% gold could be extracted by mixotrophic bacteria for 14 days, and it was 18% higher than the extraction level of direct cyanidation of the

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Microwave energy for mineral treatment processes—a brief

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 carbon regeneration and waste management. However, challenges remain to be

get price

Rock Crushing Using Microwave Pretreatment

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 oxidie the pyrite and remove the organic carbon

get price

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

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pretreatment microwave pretreatment of a refractory gold

Microwave pretreatment of a double refractory gold . 2020-7-20 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.

get price

microwave pretreatment of a refractory gold

The microwave pretreatment of a typically refractory flotation gold concentrate was investigated The results demonstrated that a maximum gold recovery of 97% was achieved and that gold recoveries of the refractory gold concentrate quickly increased to the maximum with microwave heating time Adding additives during microwave heating process was

get price

pretreatment of refractory gold ore with microwaves

Pretreatment Process on Refractory Gold Ores with As. Jun 24, 2017 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

get price

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

get price

Rock Crushing Using Microwave Pretreatment

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 oxidie the pyrite and remove the organic carbon

get price

acidic pretreatment of gold refractory ore processing MC

Acidic Pretreatment Of Gold Refractory Ore Processing. Mining Gold Iron Ore Gold Ore Extraction Equipment. For a refractory ore, pretreatment is required in order to expose the gold surface to the leach solution.An acidic hypochlorite solution can be added to the autoclave for pressure oxidation and extraction of the gold at the same time.It

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Optimizing the alkaline oxidation pretreatment of a

Sep 28, 2018Microwave pretreatment: Biooxidation (BIOX) pre-treatment of refractory gold concentrates using mixotrophic and chemolithotrophic bacteria on the gold extraction during cyanidation indicated 91.4% gold could be extracted by mixotrophic bacteria for 14 days, and it was 18% higher than the extraction level of direct cyanidation of the

get price

Microwave energy for mineral treatment processes—a brief

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 carbon regeneration and waste management. However, challenges remain to be

get price

Extraction of Gold from a Low-Grade Double Refractory Gold

The treatment process of a low-grade refractory gold ore containing sulfide minerals and carbonaceous matters was studied in this work. The gold extraction of this ore by all-sliming cyanidation was only 11.75%. Hence, a pretreatment was necessary. In this , a flotation-preoxidation-cyanide leaching process was developed.

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Refractory Gold Ore Treatment Methods

Metallurgical ContentGold LeachingProcessing of Arsenic OreMispickel (Arsenopyrite: FeAsS).6Leaching and Recovering Gold from Antimony MineralsStibnite (Antimony Sulphide, Sb2S2)Telluride Gold Ore ProcessingSolubility of TelluridesGold Extraction from Carbonaceous OreList Gold Refractory Process Methods Where gold is associated with arsenic, antimony,

get price

Microwave pretreatment of a double refractory gold ore

Microwave pretreatment of a double refractory gold ore. Sep 01 2007 Microwave pretreatment of a double refractory gold ore 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 alternative method and the results were compared

get price

Developments in the pretreatment of refractory gold

submicroscopic gold inclusions within sulphide minerals such as arsenopyrite and pyrite. Such ores require a pre-treatment process to alter or destroy the sulphide matrix and render the gold accessible to cyanide and oxygen (Gudyanga et al., 1999). The gold in high-sulphur and high-arsenic refractory gold concentrate (HGC) is encapsulated

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Experimental Study on Microwave Pretreatment with some

The microwave pretreatment of a typically refractory flotation gold concentrate was investigated. The results demonstrated that a maximum gold recovery of 97% was achieved, and that gold

get price

Study on pretreatment of refractory gold ore by microwave

Download Citation Study on pretreatment of refractory gold ore by microwave roasting method Microwave roasting method was applied for the pretreatment of refractory gold

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