Cyanide-refractory ores constitute 30 % of the world's gold mineral resource base. With the global decrease in the availability of high-grade and free-milling ores, low-quality ores, including ...

When the traditional cyanidation method is used for gold extraction, thioantimonate by stibnite decomposition reacts with oxygen to form antimony acid salt, or antimony reacts with sodium …

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.

The association of gold and antimony in many ores provides additional complications in the gold extraction process. Improvements in mineralogical identification and understanding of the chemistry of the cyanidation process with antimony present are leading to improved treatment processes for antimonial gold ores.

decomposition of the sulphides could improve the extraction of gold and silver by about 29% and about 57%, respectively from the antimonial ore (Celep et al., 2009).

Improved gold and silver extraction from a refractory antimony ore by pretreatment with alkaline sulphide leach Oktay Celep, İbrahim Alp⁎, Hacı Deveci Department of Mining Engineering ...

The low-grade antimony refractory gold ores in this experiment were produced from Shandong province of China. After grinding to fine size ensuring 98% of the ore particles are less than 74 µm, the chemical composition, phases and microscopic morphology of the ores were characterized by chemical analysis, Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) …

Orogenic antimony-gold deposits contribute significantly to the global antimony resource base. China's orogenic antimony-gold deposits are primarily in southern Tibet. Investigations indicate that antimony combines and migrates with sulfur hydroxides in ore-forming fluids. Previous research on fluid inclusions in orogenic antimony-gold ores with sedimentary …

The commercial route to extraction antimony from the antimony -gold ore to further separating antimony and gold involves alkaline leaching—electrowinning process [3,4,5,6]. In this process, the ore is leached in sodium hydroxide solution for antimony and gold separation, the resultant antimony leaching solution (antimony electrolyte) is ...

Diagnostic leaching tests suggested that the decomposition of the sulphides could improve the extraction of gold and silver by about 29% and about 57%, respectively from the antimonial ore (Celep et al., 2009). Ultrafine grinding or …

Antimony metallurgy is the technology that extracts antimony metal from antimony ores or produces antimony compounds. Antimony was discovered in the ancient time, and its name was derived from antimonite. In 1604, a process was invented to extract antimony and antimony sulfide as described by B. Valentine of Germany.

Where gold is associated with arsenic, antimony, tellurium, and certain other minerals, it is often only partly soluble in cyanide solution. The difficulty is usually more of a physical than a chemical one but special …

The SE selectively leached antimony, while gold and arsenic were retained in the residue as a raw material for further gold extraction. The antimony content in the cathode antimony was >98%, and ...

The ongoing depletion of gold and silver-containing ore deposits demands a shift towards the processing of more complex sources. Leaching of gold or silver from these sources, which are named refractory and are typically low-grade, can be complicated due to one or more of the following effects: (1) kinetic or thermodynamic impediments on cyanide diffusion or on the …

a sequential approach, starting with the removal of antimony materials followed by the gold extraction [7,8]. However, gold–antimony ores often exhibit a refractory behavior due to the association of gold with sulfides, such as antimonite (Sb2S3), pyrite (FeS2), and arsenopyrite (FeAsS). The presence of fine gold in rock-forming minerals is ...

In general, it is suitable for antimony containing refractory gold ores. The principle is that gold can be enriched into smelting product directly. The refractory gold ore with a high content of antimony (25.0–35.0% Sb, Au 30 g/t) is commonly used as an important raw material in the smelting of antimony . The melting products are antimony ...

DOI: 10.1016/J.HYDROMET.2010.10.005 Corpus ID: 95526481; Improved gold and silver extraction from a refractory antimony ore by pretreatment with alkaline sulphide leach @article{Celep2011ImprovedGA, title={Improved gold and silver extraction from a refractory antimony ore by pretreatment with alkaline sulphide leach}, author={Oktay Celep and İbrahim …

It can be seen from Eq. () that Sb 2 S 3 is deposited on the surface of gold particles, forming a dense product layer and hindering the diffusion of CN − and O 2 to the gold particles, leading to low leaching ratio [3, 4].Effect of Antimony on Pretreatment Process. The melting point of antimony compounds, generated in the roasting process of antimonial refractory gold ores, …

Gold and antimony are associated in a number of gold ores with resulting complications in the gold extraction process. The principal mineralogical forms, in which gold occurs in these ores are metallic gold, free-milling, or associated with silicate gangue, as metallic gold associated with stibnite [Sb 2 S 3] will be seen from the processes used to treat such …

To eliminate the adverse effect of antimony on extracting of gold in matte smelting process from Sb-bearing refractory gold ores, the sodium sulfide leaching method was proposed to selectively remove antimony in advance. ... It has been testified by some practice process that this type of arsenic-antimony gold ore can be efficiently treated in ...

Of all the methods of extracting gold & processing it from its ore, I used a few to evaluate two principal flowsheets in this case study. The flowsheets 911 Metallurgist is a trusted resource for practical insights, solutions, and support in mineral processing engineering, helping industry professionals succeed with proven expertise. | Gold ...

The Consolidated Murchison ore contains antimony which, during gold extraction, is thought to act as an oxygen scavenger (Monhemius, 1987), while increasing both cyanide and lime consumption.

further gold extraction. Thus, the separation of antimony and gold was achieved. ... 4Cl system aforementioned used in the antimony ore treatment is not suitable, due to a large amount of calcium leaching and circu-lation accumulation in the …

The pretreatment of an antimonial refractory gold and silver ore was investigated using alkaline sulphide leaching. The ore assayed 20 g/t Au and 220 g/t Ag and contained predominantly quartz/clay and barite, and to a lesser extent, sulphides such as pyrite, stibnite, sphalerite, zinkenite (Pb 9 Sb 22 S 42) and andorite (Sb 3 PbAgS 6).The latter mineral was …

Antimony is a non-renewable strategic mineral resource and an indispensable and important raw material for modern industrial development. With the high-intensity resource mining in recent years, the consumption of antimony resources is too large. Antimony beneficiation methods are important to improve the recovery rate of antimony ore.

Slurry electrolysis was also presented to extract antimony from high arsenic and gold-containing stibnite ore to produce cathode metal antimony (Zhang et al., 2019). In general, hydrometallurgical ...

The refractory gold ore samples were obtained from Yunnan province in china. 5 kg of gold ore was crushed and milled to 50.24 μm (D50). After milling, the gold ore is stirred evenly. The mineral composition and relative content of gold concentrate were obtained by optical microscopy, MLA, chemical analysis data and gravity concentration (Table 1

DOI: 10.1016/J.HYDROMET.2019.04.026 Corpus ID: 150110101; Extracting antimony from high arsenic and gold-containing stibnite ore using slurry electrolysis @article{Yonglu2019ExtractingAF, title={Extracting antimony from high arsenic and gold-containing stibnite ore using slurry electrolysis}, author={Zhang Yonglu and Chengya Wang …

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 …

Ultrasound is used to enhance the removal of antimony from the refractory gold ores in alkaline sodium sulfide leaching process. The effects of ultrasonic time, temperature, reagent concentration ...