Stibnite recovery from complex Tolukuma ore
The biooxidation of a refractory gold-bearing stibnite (antimony sulphide) favours the increase of gold recovery during the subsequent hydrometallurgical process (cyanidation, adsorption onto ...
Study on Pre-removal Antimony from Antimony–Gold
Antimony–gold concentrate is a refractory gold ore, and the direct cyanide leaching efficiency is very low [].For antimony–gold concentrate with high antimony content (Sb > 30%), the volatilization melting of blast furnace and reduction melting of reverberation furnace is generally adopted at present, and the gold is finally enriched in noble antimony for further recovery …
Antimony Recovery from End-of-Life Products and
According to the antimony content in stibnite ore or concentrate, different kinds of pyro-metallurgical approaches are applied at the industrial level (Anderson, 2012;Dupont et al., 2016;Multani ...
Refractory Gold Ore Treatment Methods
Some stibnite gold ores are more amenable to cyanidation when previously subjected to surface oxidation in the pulverulent condition, with the formation of a sulphate film, which on contact with water yields an insoluble basic sulphate. ... The association of the antimony and gold is very intimate, and during 1946, while the antimony recovery ...
A brief primer on the history of antimony
These developments mirror the broader potential for recovering antimony from precious metal deposits, a prospect that the USGS highlighted in its 2018 critical minerals report: "Enhanced recovery of antimony from precious metal deposits may represent the most readily available source of antimony if demand were to increase rapidly."
How a gold-stibnite restoration in Idaho could add antimony …
US Antimony, which received a $510,500 grant from the US Department of Defense, has the only primary antimony processing facilities in North America and the Stibnite Gold project is poised to be ...
Antimony Recovery from End-of-Life Products and …
critical metals [9]. The processing of antimony ores and the production of antimony metal is also concentrated in China, due to its high smelting capacity. Most of the antimony industry in Europe and the U.S.A. is therefore dependent on the import of Chinese antimony metal and is focused on the production of high-purity products and applications.
Bio-oxidation of refractory gold ores containing stibnite and
Luptakova et al. (2008) investigated the use of At. ferrooxidans in the bioleaching of an ore containing, stibnite, pyrite and quartz among other minerals. The tests were carried out in a batch reactor, at 30 °C and pH 2.5, for 120 days. During the first 7 days, a gradual increase in the antimony concentration was reported attaining approximately 70 mg/L, followed by a reduction …
THE STIBNITE GOLD PROJECT
At the Stibnite Gold Project, Perpetua will use a weak sodium cyanide solution to extract gold from the ore it mines. Cyanide has a natural tendency to bond with metals, even when they occur in microscopic amounts, such as gold and silver in ore. This method of gold recovery has been popular for over a century. Advances in
Selective removal of antimony from refractory gold ores by …
Semantic Scholar extracted view of "Selective removal of antimony from refractory gold ores by ultrasound" by Ping Guo et al. ... A review of the technologies for antimony recovery from refractory ores and metallurgical residues. ... Process flow-sheet for gold and antimony recovery from stibnite.
Selective alkaline leaching of antimony from Low-grade refractory gold
The gold in this kind of ores is usually closely combined with other metal sulphides, and mostly embedded in the stibnite, pyrite, arsenopyrite and other minerals, which makes it difficult to achieve effective flotation and leaching efficiency of gold recovery by wet extractive technology (Guo et al., 2017).
Refractory Gold Ore Treatment Methods
Leaching and Recovering Gold from Antimony Minerals Stibnite (Antimony Sulphide, Sb2S2) This mineral in an ore acts as a weak acid, combining with alkalis to form salts, of the order of M1/3SbS2 and M1/3SbS4 …
10 ORE PROCESSING
Stibnite Gold Project Plan of Restoration and Operations 10 r1 10 OPERATIONS: ORE PROCESSING 10.1 PROCESS OVERVIEW Ore processing for the Stibnite Gold Project is the separation of gold, silver and antimony from its host rock. The processing will result in production of an antimony concentrate and a gold r and silver rrich
Electrolytic recovery of antimony from natural stibnite ore
A mixture of nitric and tartaric acid [17] was used in the present work to decompose the stibnite ore sample. This method was proposed by Hampe [18] and has found wide application in the analysis of minerals containing antimony and tin, as well as of metallurgical products. Thus, tartaric acid is used mainly for the analysis of antimony ores.
Arsenic and Antimony Sulphide Minerals in Cyanidation
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 …
A selective process for extracting antimony from refractory gold ore
DOI: 10.1016/J.HYDROMET.2017.03.014 Corpus ID: 99624322; A selective process for extracting antimony from refractory gold ore @article{Yang2017ASP, title={A selective process for extracting antimony from refractory gold ore}, author={Tian-zu Yang and Rao Shuai and Wei-feng Liu and Duchao Zhang and Chen Lin}, journal={Hydrometallurgy}, year={2017}, volume={169}, …
Preparation of Antimony Sulfide and Enrichment of Gold by …
Electrodeposited antimony can be treated with sulfuration–volatilization technology, which causes antimony to volatilize in the form of antimony sulfide. During this process, gold is enriched in the residue, thereby realizing the value-added use of antimony and the recovery of gold. In this study, the thermodynamic conditions of antimony sulfide were …
How to Recover Mercury from Cinnabar Stibnite Ore
The possibility that recovery of an antimony byproduct would offset additional costs of treatment led to a preliminary investigation of concentration of cinnabar-stibnite ores. The results of this study indicated that a possible recovery process included bulk flotation of the sulfides, followed by oxidation roasting with close control of ...
Combined bio-hydrometallurgical process for gold recovery …
The aim of this work concerns the recovery of gold by a combined biometallurgical and hydrometallurgical treatment. The biooxidation of a refractory gold-bearing stibnite (antimony sulphide ...
Study on Pre-removal Antimony from Antimony–Gold
This study investigated the leaching and electrowinning of antimony from a complex, high arsenic and gold-containing stibnite concentrate ore (As-Au-Sb ore) using slurry electrolysis (SE).
Treatment of Antimonial Gold Ores
Gold recovery from the stibnite concentrate was in the range of 50–80%, dependent on the level of exposure in the concentrate treated. ... For gold ores where antimony levels are more significant but grades or associated minerals are not conducive to making high-grade antimony concentrates that are attractive to smelters, an alternative flow ...
Leaching of Antimony from Stibnite Ore in KOH Solution …
Ubaldini et al.17 developed a new process for the extraction of antimony and gold from refractory auriferous stibnite. They used alkaline sulfide leaching as pretreatment for Sb recovery. Consequently, the gold was recovered by a cyanidation–electrowinning process. Dodangeh et al.18 studied the dissolution kinetics of Sb 2 S 3 in NaOH ...
OneMine | Extraction of gold from Stibnite Ores
The removal of antimony from a refractory gold-bearing stibnite ore by roasting and selective chlorinating roasting was investigated. The influence of roasting temperature, roasting …
Process flow-sheet for gold and antimony recovery from stibnite
DOI: 10.1016/S0304-386X(00)00107-9 Corpus ID: 98163036; Process flow-sheet for gold and antimony recovery from stibnite @article{Ubaldini2000ProcessFF, title={Process flow-sheet for gold and antimony recovery from stibnite}, author={Stefano Ubaldini and Franc Vegli{`o} and Pietro Fornari and Carlo Abbruzzese}, journal={Hydrometallurgy}, year={2000}, volume={57}, …
A selective process for extracting antimony from refractory gold ore
This study investigated the leaching and electrowinning of antimony from a complex, high arsenic and gold-containing stibnite concentrate ore (As-Au-Sb ore) using slurry electrolysis (SE). The results indicated that the leaching efficiency of antimony was higher than 98%, and those of iron and arsenic were about 5.50% and 1.14%, respectively.
A review of the technologies for antimony recovery from refractory ores
Under the optimized conditions,high antimony recovery (97.35%) and low gold dissolution (1.32%) were achieved. ... high arsenic and gold-containing stibnite concentrate ore (As-Au-Sb ore) using ...
Extracting antimony from high arsenic and gold-containing stibnite ore
This study investigated the leaching and electrowinning of antimony from a complex, high arsenic and gold-containing stibnite concentrate ore (As-Au-Sb ore) using slurry electrolysis (SE). The results indicated that the leaching efficiency of antimony was higher than 98%, and those of iron and arsenic were about 5.50% and 1.14%, respectively.
Process flow-sheet for gold and antimony …
As well, examples of refractory gold recovery with alkaline sulfide hydrometallurgy such as an arsenopyrite gold concentrate application, a chalcopyrite gold concentrate application, a pregrobbing gold ore application and a cyanide …
Stibnite
A two-stage roasting process, similar to that used for arsenic sulfide ores, can also volatilize antimony oxides and prevent adverse reactions such as the production of metallic antimony, which can coat the surface of gold particles (Nagy et al., 1966) or the formation of silver glasses in high-silver ores (Matsukawa and Sakai, 1956).
Process Flow-Sheet for Gold and Antimony Recovery from …
Recovery of gold from refractory ores requires a pretreatment to liberate the gold particles from the host mineral. In particular, in the case of stibnite (Sb2S3), the antimony (Sb)...