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(PDF) Antimony recovery from galena concentrates

The maximum antimony extraction equal to 99% was achieved using Na2S concentration 250 g/l at 98 ο C. Instead, as extraction remained low at all the conditions investigated ranging between 2.5 ...

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Gold extraction using alternatives to cyanide

However, the leaching residue and cyanide tail liquid produced during gold extraction contain cyanide, which is highly toxic and harmful to the environment and human health (Acheampong et al., 2010). ... Mineralogical characterization and pretreatment for antimony extraction by ozone of antimony-bearing refractory gold concentrates. Trans ...

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Process Flow-Sheet for Gold and Antimony Recovery from Stibnite

Despite the preliminary extraction of antimony from the flotation concentrate, gold recovery remains at a fairly low level and, according to various data, does not exceed 30-40% [ [6]].Gold ...

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Selective extraction of arsenic and antimony from gold-bearing sludge

The raw material, gold-bearing sludge with arsenic and antimony, was collected from a gold smelter in Xinjiang Province, China. In the smelter, the chlorination roasting method was used to extract precious metals (gold and silver) from the cyanide tailing, which is usually contains gold 5–25 g/t (Ellis and Senanayake, 2004).

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Extracting antimony from high arsenic and gold

Antimony extraction reached over 98%, the average extraction of Fe, As, and Au were 5.50%, 1.14%, and 0.63%, respectively. Gold and aresenic remained in the leaching residue, which was further used as a raw material for gold extraction. Thus, the separation of antimony from gold and arsenic was achieved.

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Scarce mineral resources: Extraction, consumption and limits of

It is investigated how far the extraction rate of thirteen scarce raw materials can be reduced while simultaneously increasing the services they provide worldwide to the level prevailing in developed countries in 2020. The scarce raw materials considered are antimony, bismuth, boron, chromium, copper, gold, indium, molybdenum, nickel, silver ...

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A hydrometallurgical process for the separation and recovery of antimony

Fig. 1 shows this new hydrometallurgical process for antimony extraction. This process involves chlorination–oxidation leaching that inhibits the formation of most impurities in solution. By controlling the leaching potential, S 2 − in stibnite is oxidized to elemental sulfur, and antimony becomes SbCl 3 in solution.

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How a gold-stibnite restoration in Idaho could add antimony to US

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The Extraction of Gold from E-waste by Hydrometallurgy

At this stage, gold, arsenic, antimony, lead, tin, silica, platinum group metals, and a small amount of silver were leached. ... Table- 6: Results of the extraction of gold by sx the extraction of gold in the presence of organic matter D – n – Aktyle sulfide. HCl/HNO3 Φ = 90 0 C T(mixed) =120 ' V(sample )= constant. HCl/HNO3.

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Primary Resources: Current Practices and Evolving Processes

A Review on Pyrometallurgical Extraction of Antimony from Primary Resources: Current Practices and Evolving Processes Elmira Moosavi-Khoonsari 1,*, Sina Mostaghel 2, ... and gold [2,3]. As a result, the development of extraction methods was very slow until the Japanese war in 1905. Its ability as an alloying element for lead, which …

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Extracting antimony from high arsenic and gold

Antimony extraction reached over 98%, the average extraction of Fe, As, and Au were 5.50%, 1.14%, and 0.63%, respectively. Gold and aresenic remained in the …

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Bio-oxidation of Gold from Refractory Sulfide Ores: A Journey …

Through including high-throughput bacterial growth data and better process knowledge of the extraction and recovery approaches, bio-oxidation becomes more economically feasible and efficient. ... advances and developments and associated industrial and academic research and challenges from the past few years for gold bio-oxidation. Keywords: Bio ...

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Selective removal of antimony from refractory gold ores

Conditions for efficient sulfide-alkaline leaching process, ensuring high antimony extraction along with minimization of losses of gold in the solutions were determined: Eh from -0.8 to -0.6 V at ...

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Developed Process Circuit Flowsheet of Al Amar Ore for …

The extraction of gold is mostly affected by the mineralogical nature of the ore. Fine dissemination of gold particles encapsulated within the hard sulfide matrix was found to be the main reason for the poor yield of gold in the Al Amar ore. ... Alk. pretreatment of a refractory gold-silver ore contg. antimony minerals such as stibnite ...

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Cyanidation of gold ores containing copper, silver, …

In this study, the refractory behavior of Kaletaş ore was investigated within a diagnostic approach Pretreatment of the ore via roasting and ultrafine grinding prior to cyanide leaching was also examined to enhance the …

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Commodity Summaries | Australia's Identified Mineral Resources …

Antimony is commonly found in association with gold mineralisation but it also occurs with some silver-lead-zinc deposits. Its average abundance in the Earth's crust ranges from 0.2 to 0.5 ppm, which is 10 times that of silver. ... during the early 1980s as the introduction of new gold extraction technologies stimulated exploration (Figure 18 ...

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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 …

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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 …

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Selective separation of antimony from a Sb-Fe mixed solution by

The leaching recoveries of antimony, gold, and arsenic in the first step were 96.64%, 1.44%, and 0.41%, respectively. ... gas (ozone and oxygen mixture) flow rate and liquid/solid ratio on antimony extraction and iron dissolution have been examined. The results show that the leaching efficiency (%) of antimony increases with the temperature ...

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Technical noteA selective process for extracting antimony from …

• A complete technological process for extracting antimony from refractory gold ore was proposed. • Antimony can be selectively removed from refractory gold ore by sodium sulfide leaching. • Antimony was recovered in the form of sodium pyroantimonate …

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Recovery of gold from sulfide refractory gold ore: Oxidation …

Accordingly, the optimized process results are determined as follows: the extraction rates of antimony and gold reach 94.15% and 3.37%, respectively, under Na 2 S concentration of 85.66 g/L, NaOH concentration of 45.5 g/L, liquid–solid ratio of 1.5, leaching at 90 °C for 5 min, which are very consistent with the predicted values of the ...

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Selection on the Process for Removing and Recovering Antimony …

In this paper, the adverse effect of antimony on the extraction of gold by pretreatment-cyanide leaching was discussed in detail. Moreover, these processes of …

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A novel non-cyanide extraction method of gold for high As-Sb …

The gold extraction performance tests were measured by two step tests, including the manganese oxide hydrochloric acidic pre-oxidation of As-and Sb-bearing sulphides and the processed residues gold leaching. ... The oxidative dissolution of antimony-bearing sulphide in the gold ore is more dependent on a high temperature …

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Selective extraction of arsenic and antimony from gold-bearing …

During the gold production process, the coexistence of arsenic and antimony will increase the consumption of CN −, OH − and O 2, and produce precipitates coated on the surfaces of gold particles so as to decrease the efficiency of gold extraction (Eisler, 2004; Yang et al., 2017).

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Mineralogical characterization and pretreatment for antimony extraction

Selective extraction of arsenic and antimony from gold-bearing sludge using two-stage alkaline leaching. Resources, Conservation and Recycling, Volume 167, 2021, Article 105388. Show abstract. In gold smelting industry, coexisting of arsenic (As) and antimony (Sb) in gold-bearing sludge is a serious issue for the smelting process. This …

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Mineralogical characterization and pretreatment for antimony extraction

The mineralogical characterization of antimony-bearing refractory gold concentrates and the antimony extraction by ozone in HCl solution were investigated. ... The antimony extraction by ozone in hydrochloric acid was employed and the influences of temperature, liquid/solid ratio, HCl concentration and stirring speed on the extraction of ...

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Selective alkaline leaching of antimony from Low-grade refractory gold

The effects of various leaching factors on extraction of antimony and inhibition of gold are investigated, and through single-factors experiments, the suitable process conditions are determined as follows: Na 2 S concentration of 60–80 g/L, NaOH concentration of 30–50 g/L, liquid–solid ratio of 1.5–2, leaching at 65–90 °C for 5 min ...

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Copper and Antimony Recovery from Electronic Waste by

A strategy for the efficient recovery of highly pure copper and antimony metals from electronic waste (e-waste) was implemented by the combination of hydrometallurgical and electrochemical processes. The focus is on copper recovery as the main component in the leached solution, whereas the antimony recovery process was established as a …

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Leaching Kinetics of Antimony from Refractory Gold Ore in …

An environmentally friendly leaching process, consisting of the pretreatment of alkaline pressure oxidation and thiosulfate leaching, has been developed to efficiently extract gold from a high carbon, arsenic and antimony bearing sulfide gold concentrate. The Au extraction from the concentrate by direct cyanidation was very low mainly due to ...

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Antimony

A significant antimony resource is located at Costerfield. In addition, there has been important historical production from the Ringwood and Coimadai deposits. Stibnite is also a minor constituent of gold-bearing sulphide reefs of the Bendigo Zone and there is bournonite (PbCuSbS 3) in the silver–lead ores of eastern Victoria.

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