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This gold extraction process is applicable to goldbearing quartz vein type ores containing elements such as arsenic and antimony. The roasting process is a preparation for cyanidation in order to remove elements that are harmful to cyanidation.
Avramides et. al. (2000) investigated the effect of antimony on gold extraction. They suggest that SbO+ ion could inhibit gold extraction (Adams, 2005). In this study, roasting as a pretreatment process for improving the cyanide leaching of gold and silver from Akoluk
Alp et al. (2010) and mineralogical characterization of the Akoluk goldsilver ore has Celep et al. (2011) have already shown that alkaline sulde leaching indicated that the ore contains antimony suldes, including andorite is an effective pretreatment method ead of cyanide leaching for (Sb3PbAgS6) and zinkenite (Pb9Sb22S42), as the main silver and gold the extraction of gold and silver from antimonial
Cyanidation tests on two ore samples from two different gold deposits are reported. The first sample contained ppm gold with high arsenic and antimony. The second sample had a low gold content ( ppm) but a high silver content (160 ppm). The first series of test work focused on the determination of conditions for extracting gold from the samples ground to 75 m.
In this paper, the effect of the oxidative pretreatment and lead nitrate addition on the cyanidation of Zarshuran refractory gold ore containing ppm Au, % As, and % sulfur were
The formula is as follows: 2Au+4NaCN+O2+2H2O2Na [Au (CN)2]+2NaOH+H2O2. 2Au+4NaCN+H2O22Na [Au (CN)2]+2NaOH. From the electrochemical reaction, it can be known that dissolving 1 gram of gold consumes grams of sodium cyanide.
18 #0183;#32;Jul 01, 2010#0183;#32;Cyanidation of gold ores containing copper, silver, lead, arsenic and antimony. The
The ore doesnt contain carbonaceous material capable of adsorbing gold cyanide complex; 6. Does not contain a large number of compounds that can react with cyanide solution, such as partially oxidized antimony sulfide, zinc sulfide, iron sulfide, copper sulfide and arseniccontaining minerals.
FLOTATION OF GOLDCONTAINING MERCURY/ANTIMONY ORES In general, these ores belong to a group of difficulttotreat ores, where cyanidation usually produces poor extraction. Mercury is partially soluble in cyanide, which increases consumption and reduces extraction. A successful flotation method [5] has
Pyrrhotite calcine obtained from inert firing, sent for sorption cyanidation. Get the gold. The problem is solved by a method for processing sulfide goldarsenicantimony concentrates and ores, according to the invention, pyrrhotite cinder subjected bastianino sorption leaching.
Oct 03, 2020#0183;#32;Aurostibite, a gold antimony compound, is particularly known to be insoluble in cyanide solution. The antimony dissolves in cyanide solution to form antimonates, which retards gold dissolution.
The ore is subjected to cyanidation leaching to produce a slurry composed of a goldcontaining solution and a tailings for washing and filtering, thereby separating the goldcontaining solution from the
Cyanidation of gold ores containing copper, silver, lead, arsenic and antimony
International Journal of Mineral Processing 95 (2010) 6877 Contents lists available at ScienceDirect International Journal of Mineral Processing j o u r n a l h o m e p a g e : w w w. e l s ev i e r. c o m / l o c a t e / i j m i n p r o Cyanidation of gold ores containing copper, silver, lead, arsenic and antimony P. Karimi a,, H. Abdolli a, A. Amini b, M. Noaparast a, Shafaei a
The mineral components, such as antimony, arsenic, copper, sulfur, are not sensitive to thiourea gold extraction, but can affect cyanidation gold extraction. Therefore, thiourea leaching process can be use to extract the gold and silver from the goldbearing mineral that is difficult to treat with cyanidation process.
Because of the rise in gold prices, some antimony ores should really be viewed as gold ores with antimony as a byproduct. In this context, cyanide leaching is an obvious step in addition to gravity separation, and the most logical procedure here would be first to separate the antimony at natural pH and then to leach out the gold with cyanide.
The successful cyanidation of gold ores containing appreciable amounts of arsenic or antimony sulphide minerals such as orpiment, realgar, and stibnite is usually difficult or even impossible. Extractions are low and the solutions soon become foul. The gold in such ores could be free and uncoated, and no trouble in dissolving it in clean cyanide solutions would be expected. However,
Jul 01, 2010#0183;#32;Cyanidation tests on two ore samples from two different gold deposits are reported. The first sample contained ppm gold with high arsenic and antimony. The second sample had a low gold
Dec 05, 2020#0183;#32;The process included three steps: 1) leaching of antimony from the refractory gold ore with sodium sulfide solution; 2) pressure oxidation of the leaching solution containing sodium thioantimonite...
It has strong adaptability to gold mines, especially to ores containing clay, graphite, asphalt shale, iron oxide and other natural adsorbents and to other complex arsenic gold ore. The main processes of cyanidation gold extraction process include cyanide leaching, adsorption from cyanide solution, and obtaining the finished gold product, which
Aug 01, 2009#0183;#32;The duration of the leach was extended to 168 h because the system did not reach a steady state in 120 h. Gold ores containing stibnite are usually processed at a pH lower than 10 to avoid the dissolution of antimony that precipitates gold in solution. The use of pH did not improve gold extraction, which was only %.
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