·Gold containing ore processing technology has been developed by using chemical X ray phase mineralogical X ray fluorescence analyses The results of experiments on the gold recovery from a concentrate with a particle size of 10 and 4 µm are presented including options for direct cyanidation without preliminary oxygen oxidation as well as with the use of
·Gold processing Refining Smelting Purifying Gold extracted by amalgamation or cyanidation contains a variety of impurities including zinc copper silver and iron Two methods are commonly employed for purification the Miller process and the Wohlwill process The Miller process is based on the fact that virtually all the impurities present in gold
·The Platsol Process has been tested for the leaching and recovery of base metals gold and PGMs from sulfide ore as has the Kell Process The lntec process Nippon N Chlo Nichromet and Outotec s Gold Chloride processes have all been tested for the leaching of gold in concentrated chloride solutions at atmospheric pressure
·process [5 6] thiourea method [7] mercury mixing method [8] and acid base method [9] to treat the cyanide residue of refractory gold ore cannot meet the requirements of gold extraction so that the refractory gold deposits have not been effectively extracted and separated thus causing serious waste of resources
·Iron oxides are reduced to metallic iron and gold is chloridized at the same time in the one step chlorination reduction roasting process Gold and iron of cyanide tailings can be efficiently separated and recovered by the new technology Approach to the management of gold ore tailings via its application in cement production Journal of
·processing of gold ores Chlorination or reduction roas ting has been developed for detoxification and recovery of iron and m ore stable complexes and is widely favored by researchers
·The chlorination leaching of gold one of the non cyanide methods has the advantages of higher reaction rate less pollution simple process and low cost compared with the cyanide leaching
·The chlorination leaching of gold one of the non cyanide methods has the advantages of higher reaction rate less pollution simple process and low cost compared with the cyanide leaching Gold Ore Processing 2016 pp 447 484 Aylmore Mechanism and application of the ore with chlorination treatment A review
·The high demand for gold together with the shortage of natural resources and high pollution potential of wastes generated during mining and ore processing activities led to search for alternative
·gold in the raw ore [8] Pyrite is the main package of gold in the ore and a large number of studies are based on the principle [9] Firstly Murthy et al extracted only about 43% of gold from
·This paper describes the chlorination roasting water leaching process for the volatilization separation of gold zinc and simultaneous vanadium recovery from carbonaceous gold ore Chlorination roasting was conducted on carbonaceous gold ore The chlorination residue and volatile precipitates were examined for textural and chemical properties
·The chlorination leaching of gold one of the non cyanide methods has the advantages of higher reaction rate less pollution simple process and low cost compared with the cyanide leaching Gold Ore Processing 2016 pp 447 484 Aylmore Mechanism and application of the ore with chlorination treatment A review
·slimes and gravity gold concentrates with chlorine leaching A very high purity gold product at parts per thousand was produced Schneiner et al 1971 and Guay et al 1961 1973 have pre treated Carlin type carbonaceous refractory gold ore in Nevada with hypochlorite followed by cyanidation Gold extraction was improved from 6 32 %
·The process is characterized for its economic cost against the agitated leaching process when the ore deposit has a low gold content Typically the process can process ores whose gold content is g/t The leaching solution is spread at the top of the pile and the pregnant solution will have to percolate through the pile
·Kelsall et al 1993 constructed the potential pH and activity pH diagrams of the gold halogen water system They also conducted thermodynamic studies and predicted the behavior of gold in halogen electrolytes Zhang et al 2016a analyzed the thermodynamics of the gold leaching process in thiourea solution and investigated the stability of the leaching process
·A novel process based on chlorination roasting was proposed to simultaneously recover gold and zinc from refractory carbonaceous gold ore by using NaCl as chlorination agent The effects of roasting temperature roasting time and NaCl content on the volatilization rates of gold and zinc were investigated
·amalgamation of gold with mercury and the use of the chlorination process in the extraction of gold from its In her publication on colonial technology Jan Todd He claimed the fine gold in the ore was heated to a high enough temperature to form globules that amalgamated without trouble The
A novel process based on chlorination roasting was proposed to simultaneously recover gold and zinc from refractory carbonaceous gold ore by using NaCl as chlorination agent The effects of roasting temperature roasting time and NaCl content on the volatilization rates of gold and zinc were investigated
·Technical Note Gold extraction by chlorination using a pyrometallurgical process Ojedaa E Perinob M del C Ruiza a Instituto de Investigaciones en Tecnología Química INTEQUI Universidad Nacional de San Luis CONICET 290 5700 San Luis Argentina bÁrea de Química Analítica Universidad Nacional de San Luis San Luis Argentina
·This paper describes the chlorination roasting water leaching process for the volatilization separation of gold zinc and simultaneous vanadium recovery from carbonaceous gold ore Chlorination
KEY WORDS arsenic bearing gold ore; pretreatment process; refractory gold ore 1 Introduction Gold ores are considered refractory if gold extractions from a conventional cyanidation process are less than 80% even after fine Arsenic bearing refractory gold ore has stones extremely difficult to deal with In the stones
·The gold tailing was obtained from a gold smeltery in Hunan Province of China where the roasting gold ore was leached by gold leaching reagents to recover Au and the gold tailing was obtained after the gold leaching For chlorination roasting process many studies indicated that Chlorine Donor such as CaCl 2 NaCl FeCl 3
·These restrict its development and application in industry Selective chlorination roasting process has been proved to be more efficient and cheaper for the extraction of the metals such as Ti Zr Nr Mo etc [17] The chlorination roasting process also can be used to extract gold from the refractory gold ore
DOI / Corpus ID 199078995; The separation of gold and vanadium in carbonaceous gold ore by one step roasting method article{Wang2019TheSO title={The separation of gold and vanadium in carbonaceous gold ore by one step roasting method} author={Hong jun Wang and Ya Li Feng and Hao ran Li and Kang Jinxing}
