microwave pretreatment of a double refractory gold ore

Microwave Pressure Gold Ore Leaching

US5236676A Pressure chlorination of refractory gold ores. The treatment process of a low-grade refractory gold ore containing sulfide minerals and carbonaceous matters was studied in this work. the Verde Open pit, with ore gold grades ranging from 0. Pretreatment of arsenicbearing gold ore with microwave. The recovery rate of gold in the leach ...

Microwave pretreatment of a double refractory gold ore ...

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. The compositional changes of the ore during roasting were determined by thermogravimetric analysis (TGA).

microwave pretreatment of a double

Microwave pretreatment of a double refractory gold ore. C.A. Pickles's 102 research works with 1,350 citations and 5,935 reads, including: CANMICRO: SCALING UP MICROWAVE TECHNOLOGY FOR THE MINING INDUSTRY

microwave heating of refractory minerals

Review Pretreatment Process on Refractory Gold . Microwave roast ing is a new pretreatment to solve the problem. It uses min pose of arsenical pyrite and gold concentrate with pyrite the gold leaching rate reached 98 .10) effective method for the carbon refractory gold ore and is used in preprocess of high arsenic gold ore. Chat Online; 1 ...

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 ...

pretreatment of refractory gold ore with microwaves in ...

This page is about pretreatment of refractory gold ore with microwaves in johannesburg gauteng south africa, click here to get more infomation about pretreatment of refractory gold ore with microwaves in johannesburg gauteng south africa. ... microwave pretreatment of a refractory gold-crusher and mill. ... Pretreatment of Double Refractory ...

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

microwave pretreatment of a double refractory gold ore

Microwave pretreatment of a double refractory gold ore ScienceDirect. 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.

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 to those obtained by ...

microwave pretreatment of a refractory gold

pretreatment of refractory gold ore with microwaves. Microwave pretreatment of a double refractory gold ore ScienceDirect 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 sol Chat Online. Refractory Gold Ore Treatment Methods

Pretreatments Applied to Refractory Gold Ores | Request PDF

It is necessary to apply a pretreatment process to obtain high gold recoveries (> 80 percent) from refractory ores by cyanide leaching. Many studies have been conducted on the oxidation of ...

Biological pretreatment of carbonaceous matter in double ...

The pretreatment of carbonaceous material in double refractory gold ores (DRGO) is necessary to decrease preg-robbing of gold and maximize gold recovery. DRGO contains of carbonaceous matter and gold grains encapsulated in sulfide minerals, which typically results in very poor gold recovery. However, there is growing interest in DRGO because ...

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.

microwave pretreatment of a double refractory gold ore

Double refractory gold ores, Microwave pretreatment of a double refractory gold ore The primary and secondary gold bearing materials can be divided into . Chat Now Microwave pretreatment of a double refractory gold ore. On Sep 1, 2007 B Nanthakumar (and others) published: Microwave pretreatment of a double refractory gold ore. Chat Now

microwave pretreatment of a refractory gold - MC World

pretreatment 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.

LEACHING OF REFRACTORY GOLD ORES BY MICROWAVE …

The authors of [16] examined the 648 effects of the microwave roasting of a double refractory gold ore and showed that the total decrease in carbon content was greater, the heating rate was higher, and energy consumption was lower than with the use of conventional roasting.

Pretreatment Method Of Gold Ore - dobermannsa.co.za

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

MICROBIAL PRE-TREATMENT OF DOUBLE REFRACTORY …

of double refractory gold ores and concentrates. Currently numerous studies are in progress to further improve upon the efficiency of the bacterial process and to investigate the potential of other microorganisms. In this study, microbial pre-treatment of double refractory gold ore (sample A) and

microwave pretreatment of a refractory gold

Microwave pretreatment of a double refractory gold ore - ScienceDirect. 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 sol. Get price; Microwave assisted …

suphidic gold ore pretreatment

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.

Microwave Assisted Pretreatment Of Refractory Gold Ores

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. gtgtchat online

microwave pretreatment of a refractory gold

Microwave pretreatment of a double refractory gold ore - ScienceDirect. 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.

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 ...

Pretreatment Process on Refractory Gold Ores with As

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.

Pretreatment Microwave Pretreatment Of A Refractory Gold ...

Double Refractory Gold Ores Cvhcleaning. A refractory gold ore is an ore that has ultra fine gold particles disseminated throughout its gold occluded minerals These ores are naturally resistant to recovery by standard cyanidation and carbon adsorption processes These refractory ores require pretreatment in order for cyanidation to be effective in recovery of the gold

Improved grindability and gold liberation by microwave ...

Jul 18, 2013· In addition to the enhanced grindability, gold was released from the matrix of the host minerals at a coarser size, resulting in a significant increase in free gold recovery by gravity concentration. For a gold ore with a head grade of 6˙4 gt −1, the gold recovery improved from about 28% to 40% after microwave pretreatment.

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 ...

pretreatment of refractory ores prior to gold leaching

Pretreatment Process on Refractory Gold Ores with As. 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.

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 …

Microwave Pretreatment of Refractory Gold Ores ...

The microwave pretreatment processes of refractory gold ores in solid and slurry, and effects of the microwave pretreatment on cyanide leaching are investigated The mechanism of microwave pretreatment is described The cyanide leaching recovery of Au in the sample A is up to 86 50%~89 19% with the solid microwave pretreatment, and the cyanide leaching recovery of Au in sample B …