MICROWAVE IRRADIATION PRETREATMENT OF A …
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 extractions respectively.
Microwave pretreatment of a double refractory …
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 alternative method and …
Microwave pretreatment of a double refractory …
However, there is no information published on the microwave processing of the double refractory gold ores. 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. 3. Experimental 3.1. Ore sample. A low-grade sample of a double refractory gold ore was obtained from Barrick Gold Strike.
microwave assisted pretreatment of refractory …
Leaching of Refractory Gold Ores by Microwave Irradiation . Dec 10, 2013 · The present stone 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 xray structural analysis (XRD) and scanning electron microscopy (SEM) before and after microwave irradiation.
microwave assisted pretreatment of refractory …
refractory gold 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. Get More. refractory gold ore crushing process - riversidevetscoza . Gold Refractory Ores Microwave Assisted Recovery XSM ...
Microwave pretreatment of a double refractory …
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 ...
Microwave pretreatment of a double refractory …
Microwave pretreatment of a double refractory gold ore Article in Minerals Engineering 20(11):1109-1119 · September 2007 with 327 Reads How we measure reads
microwave pretreatment of a refractory gold
refractory gold 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. Get More. Get Price. the use of microwave in refractory ore benification. pretreatment of refractory gold ore with ...
Experimental Study on Microwave Pretreatment …
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 ...
Experimental Study on Microwave Pretreatment …
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 ...
microwave pretreatment of a refractory gold
Microwave pretreatment of a double refractory gold ore - ScienceDirect 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 sol.
Pretreatment of refractory gold-bearing sulfur ...
Download Citation | Pretreatment of refractory gold-bearing sulfur concentrates by microwave roasting | After roasting refractory gold-bearing sulfur concentrates by microwave, the influences of ...
Microwave roasting of flash flotation concentrate ...
Nanthakumar 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 …
pretreatment of refractory gold ore
Developments in the pretreatment of refractory gold minerals by nitric acid D.-X. LI College of Environmental Science and Engineering, China The stone covers many literature reports of processes using nitrogenous species as an oxidant for processing refractory gold ores, especially development in the pretreatment of refractory gold . Microwave pretreatment of a double refractory gold ore ...
microwave pretreatment of a double refractory …
Microwave pretreatment of a double refractory gold ore . 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%.
Microwave pretreatment of a double refractory …
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.
microwave pretreatment of a refractory gold
Microwave pretreatment of a double refractory gold ore - ScienceDirect 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 sol.
Refractory Gold Ore Treatment Methods
Metallurgical ContentGold Leaching & Processing 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, tellurium, and …
Processing Refractory Gold - Hydrometallurgy: …
Gold which has formed an alloy with other metal forming a solid solution is considered refractory, by definition if you can’t get recoveries beyond 80% then you can call it a refractory ore, whether it’s a mineral processing problem or not will depend on the type of refractory, I will consider a mineral processing problem those ores which have micro gold particles which cannot be liberated ...