Improved gold and silver extraction from a refractory antimony ore …
The pretreatment of an antimonial refractory gold and silver ore was investigated using alkaline sulphide leaching. The ore assayed 20g/t Au and 220g/t Ag and contained predominantly quartz/clay ...
Development of a Two-Stage Hydrometallurgical Process for Gold–Antimony …
Therefore, processing these complex ores typically involves 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 (Sb 2 S 3 ), pyrite (FeS 2 ), and ...
How a gold-stibnite restoration in Idaho could …
The mineral reserves include 14.2 Mt of high-antimony ore grading 0.42% antimony. The average annual metal production during the first four years of operation is expected to be approximately ...
A selective process for extracting antimony from …
Preparation of Antimony Sulfide and Enrichment of Gold by Sulfuration–Volatilization from Electrodeposited Antimony. Electrodeposited antimony …
Study on Pre-removal Antimony from …
Antimony has a negative effect on the gold extraction from antimony–gold concentrate, and it is necessary to remove antimony in advance. For a high calcium low …
Antimony Recovery from End-of-Life Products and Industrial …
Antimony has become an increasingly critical element in recent years, due to a surge in industrial demand and the Chinese domination of primary production. Antimony is produced from stibnite ore (Sb2O3) which is processed into antimony metal and antimony oxide (Sb2O3). The industrial importance of antimony is mainly derived from …
Selective removal of antimony from refractory gold ores by …
Selective removal of antimony from refractory gold ores by ultrasound. Ping Guo, Shixing Wang, Libo Zhang. Published 1 December 2019. Materials Science, Chemistry, Environmental Science. Hydrometallurgy. View via …
The Solubility of Antimony (Sb) in Liquid Hydrocarbons and …
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 …
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 (Sb 2 S 3), the antimony (Sb) forms stable compounds with sodium cyanide (NaCN) during the cyanidation process; as a consequence, cyanide consumption increases.Pretreatment is usually an …
A Review on Pyrometallurgical Extraction of Antimony from …
In the process of BF volatilization smelting-electrolysis of gold-antimony alloy, the dried briquettes of antimony-gold ore, lime, and coke were smelted in the blast furnace where more than 90% of antimony was volatilized to crude antimony oxide and about 10% antimony metal stayed in the BF, as a gold carrier. ... Lin, H.K. Extraction of ...
Development of a Two-Stage Hydrometallurgical Process for Gold–Antimony …
An integrated two-stage metallurgical process has been developed to process concentrates from the Olimpiadinskoe deposit, which contain high levels of antimony and arsenic. The optimal parameters for the alkaline sulfide leaching process of the initial concentrate from the Olimpiadinskoe deposit were determined to achieve the maximum …
Refractory Gold Ore Treatment Methods
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 methods of treatment may be required. ... Gold Extraction from Carbonaceous Ore. The so-called "graphite" or carbonaceous ...
Selection on the Process for Removing and …
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 …
Development of a Two-Stage Hydrometallurgical …
Therefore, processing these complex ores typically involves a sequential approach, starting with the removal of antimony materials followed by the gold …
A Selective Method for Chemical Extraction of Antimony …
Antimony leaching from tetrahedrite-bearing ores was typically carried out by using Na2S-NaOH solutions. In the current paper, the detail mechanism of antimony leaching from tetrahedrite-rich concentrate via K2S and BaS lixiviants was investigated for the first time. Sample was characterized in terms of chemical, mineralogical, and …
Pretreatment of a refractory arsenopyritic gold ore
An arsenopyrite refractory ore was pretreated with NaOH to increase gold extraction. ... in a subsequent cyanidation from a refractory antimony ore, using an alkaline pretreatment with Na 2 S and NaOH (2011a), NaOH (2011b) and KOH (2014), achieving up to 94% silver extraction and 87% of the gold with 86% antimony removal …
Influence of potassium hydroxide pretreatment on the extraction of gold
Potassium hydroxide alkaline pretreatment of a refractory gold–silver ore containing 20 g/t Au and 220 g/t Ag was investigated with the purpose to evaluate its effectiveness on the extraction of gold and silver.The presence of antimony minerals such as stibnite (Sb 2 S 3), zinkenite (Pb 9 Sb 22 S 42) and andorite (Sb 3 PbAgS 6) is the …
Treatment of antimonial 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 …
Selection on the Process of Enriching Gold by Smelting from …
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 ...
Selection on the Process for Removing and Recovering Antimony …
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 …
Gold–Antimony Concentrate Treatment from 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 …
A selective process for extracting antimony from …
In order to overcome this problem, Yang et al. utilized the sodium sulfide to extract the antimony from refractory gold ore, and the leaching recoveries of antimony …
Bioleaching of zinc, copper and antimony from a …
However, antimony extraction was still low due to solid product formation. Muravyov (2019) conducted a two-stage (ferric leaching and bioleaching by Sulfobacillus bacteria) dissolution process for extracting gold from sulfidic minerals such as stibnite. The results showed that the final oxidation levels of arsenopyrite and sulfidic sulfur were ...
Improved gold and silver extraction from a refractory antimony ore …
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 …
Antimony: The Most Important Mineral You Never Heard Of
Antimony is a strategic critical mineral that is used in all manner of military applications, including the manufacture of armor piercing bullets, night vision goggles, infrared sensors, precision ...
Antimony Mobilization through Two Contrasting Gold Ore …
Antimony, a toxic metalloid similar to arsenic, is present at variable levels in most gold-bearing rocks. Antimony is soluble in the surface environment, so antimony (Sb) mobilization in mine waters is an environmental issue around gold mines. The Reefton gold mine was originally developed in gold-bearing quartz veins; Sb concentrations …
Selective removal of antimony from refractory gold ores
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 ...
Study on Pre-removal Antimony from Antimony–Gold …
For a high calcium low antimony–gold concentrate (Ca–Sb–Au ore), this study proposed to pre-remove antimony using slurry electrolysis in HCl–CaCl2 system. The results indicated that the optimal conditions were CaCl2 300–350 g/L, electric quantity 1.2 times, HCl 30 g/L, time 3.5 h, and temperature 60 °C. The leaching efficiency of ...
Preparation of Antimony Sulfide and Enrichment of …
Moreover, China's antimony ore mining accounted for 52% of the world's antimony mining in 2020, with extraction of antimony ores also ranking first in the world . With the increasing development of …
Selective alkaline leaching of antimony from Low-grade refractory gold
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 …