R K Amankwah and C A Pickles Microwave roasting of a carbonaceous sulphidic gold concentrate Minerals Engineering 22 13 2009 1095–1101 CrossRef Google Scholar 13 …

The current study is focused on the microwave roasting of a gold rich sulphidic concentrate in oxidizing atmosphere which can be proved as a rapid and low cost energy method …

The concentrate from the flotation procedure was processed using different preoxidation methods A concentrate containing 34 08g t of gold with the gold recovery ratio of 81 20 was obtained by flotation After roasting microwave heating or alkaline pressure…

effect of pretreatment of gold refractories using microwaves roasting Microwave pretreatment of a carbonaceous sulfidic gold concentrate refractory gold concentrate by microwave roasting 187 Free Online Chat Science gov v5 0 …

The conditions found to be at the temperature of 240 C Under optimum conditions the microwave heating power was 1482 W Based on the mention results this microwave heating method can be applied effectively and efficiently way for the production process…

Microwave roasting of a carbonaceous sulphidic gold concentrate the microwave roasting of a refractory carbonaceous sulphidic gold concentrate was investigated cyanide strength was maintained at 1 g l and the pH was maintained between 10 5 and 11 using a…

Read quot Removing chlorine of CuCl residue from zinc hydrometallurgy by microwave roasting Journal of Central South University of Technology quot on DeepDyve the largest online rental service for scholarly research with thousands of academic publications available at…

Resource consumption and environment impact had a statistically significant effect on the green evaluation of microwave shaft furnaces Amankwah R K and Pickles C A 2009 Microwave roasting of a carbonaceous sulphidic gold concentrate Vol 22 pp …

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 …

Gold ores containing carbonaceous matter and sulphidic minerals are generally referred to as double refractory Extraction of the gold from such ores usually requires an oxidation step to both liberate the ultra fine gold from the matrix of the sulphides and remove the …

The current study is focused on the microwave roasting of a gold rich sulphidic concentrate in oxidizing atmosphere which can be proved as a rapid and low cost energy method …

The purpose of this study was to recover gold from invisible concentrate using microwave nitric acid leaching and filter paper A microwave nitric acid leaching experiment was conducted to liberate gold from invisible gold concentrate Au 1 765 50 g t using different concentrations of nitric acid …

The gold extraction values after cyanidation were over 96 and these were similar to those obtained by conventional roasting The main advantages of microwave roasting were that both the total …

U1401231 hunan AQ NHCXTD04 …

The purpose of this study was to recover gold from invisible concentrate using microwave nitric acid leaching and filter paper A microwave nitric acid leaching experiment was conducted to liberate gold from invisible gold concentrate Au 1 765 50 g t using different …

Gold bearing high arsenic sulphide concentrate was produced from flotation of the lead zinc and gold ore in a mine in South China After the concentrate was dried the sizes of more than 70 of the particles of the concentrate were smaller than 75 μm As shown in Table 1 chemical analysis was performed to measure the contents of different components in concentrate …

The roasting of a refractory gold concentrate using microwave radiation has been investigated The TGA results in air show that there was a continuous mass loss from room temperature to 1000 C with a total mass loss of 23 …

Roasting is one of the methods utilised in dealing with refractoriness In this study flash flotation concentrate containing sulphides and carbonaceous matter was investigated to ascertain its susceptibility to roasting under microwave irradiation The major…

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 paper…

Microwave roasting of a carbonaceous sulphidic gold After roasting refractory goldbearing sulfur concentrates by microwave the influences of microwave power the ore mass and roasting time on sample mass loss rate and leaching rate were investigated …

A microwave nitric acid leaching test was performed to concentrate gold from invisible gold concentrate Weight of the leach residue removal ratio of As and Bi and gold content were compared before and after the leaching tests …

Abstract Consolidation in calcines is a common problem in the oxygen enriched air roasting of refractory gold concentrates containing sulfur and carbon when the initial temperature is greater than 600 C To determine the phases that caused consolidation gold …

microwave roasting of a carbonaceous sulphidic gold assisted mineral leaching microwave assisted roast ing and smelting of sulphide concentrate microwave assisted pretreatment of refractory gold concentrate microwave assisted spent carbon regeneration…

Microwave Roasting Of A Carbonaceous Sulphidic Gold Microwave roasting of a carbonaceous sulphidic gold concentrate author links open overlay panel rk amankwah a ca pickles b the magnetron operated at 3000 v dc and produced high frequency 245 ghz of …

2007 tested microwave pretreatment with conventional roasting for a double refractory gold ore where both sulphides and carbonaceous matter were present Get price Redalyc Improved roasting of some colombian gold ores KEYWORDS Roasting microwaves…

Amankwah and Pickles 2009 investigated microwave roasting of a carbonaceous sulphidic gold concentrate which had been milled fine and the material had very high microwave response Due to the fine size however the compaction during microwave processing generated high temperatures and in some cases caused sintering and melting …

X MOL，Hydrometallurgy Eco friendly leaching of gold from a carbonaceous gold concentrate in copper citrate thiosulfate solutions，Jian Wang Feng Xie Wei Wang Yunlong Bai Yan Fu David Dreisinger…

Microwave roasting of a carbonaceous sulphidic gold concentrate Gold ores containing carbonaceous matter and sulphidic minerals are generally referred to as double refractory Extraction of the gold from such ores usually requires an oxidation step to both liberate …