antimony recovery from sulfur ore and impact of waste

Antimony Recovery from End-of-Life Products and Industrial Process ...

Feb 8, 2016 ... Antimony is produced from stibnite ore (Sb2O3) which is processed into antimony metal and antimony oxide (Sb2O3). ... The paper also discusses the possibility of waste valorization schemes to guarantee a more sustainable life cycle for antimony. ... Antimony Recovery Recycling Secondary sources.

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Process flow-sheet for gold and antimony recovery from stibnite - Cnr

conventional cyanidation; moreover, a complete process flow-sheet with low environmental impact, considering technical and economical factors, is proposed. q2000 Elsevier Science B.V. All rights reserved. Keywords: Stibnite; Gold; Antimony; Alkaline pretreatment; Factorial experiments; Cyanidation; Refractory ores. 1.

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Process Flow-Sheet for Gold and Antimony Recovery from Stibnite ...

Dec 20, 2017 ... 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) forms stable compounds with sodium cyanide (NaCN) during the cyanidation process; as a consequence, cyanide consumption...

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Metal Extraction Processes for Electronic Waste and Existing - MDPI

Feb 19, 2014 ... Primary lead is produced from sulfide ores containing iron, zinc, copper, PMs, and other trace elements. The concentrated ore and e-waste is treated for the extraction of lead and PMs. The process consists of sintering (ores), reduction and refining stages. Sintering is carried out to reduce the sulfur contents...

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New approaches for extracting and recovering metals from mine ...

May 15, 2017 ... A two-stage mineral leaching and metal recovery protocol was developed to extract copper from tailings generated as waste materials in two mines .... facultatively autotrophic and obligately heterotrophic iron/sulfur oxidizing and iron-reducing bacteria (Sulfobacillus (Sb.) thermosulfidooxidansT and...

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the alkaline sulfide hydrometallurgical separation, recovery ... - SAIMM

application to arsenic, antimony and mercury bearing ores, concentrates, by-products, and other materials. 1. ... Dissolution of elemental sulfur in sodium hydroxide is also used as a lixiviant for alkaline sulfide .... toxicological issues in the use of alkaline sulfide gold recovery as the waste products become value added...

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Antimony (Sb) in urban and industrial waste and in waste incineration

municipal waste and about the consequences of the presence of antimony in waste incineration. This report will try ... positions. These compounds are slightly soluble in water and SbOCl can be recovered as a precipitate. ... Sb2S3) with 71.7% Sb. Other antimony ores are antimonic oxide (valentinite, senar- montite Sb203)...

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doctoral thesis - DiVA portal

e Antimony Recovery from Complex Copper Concentrates through Hydro- and Electrometallurgical Processes. Sb-bearing ... reserves are becoming exhausted and the resources of unexploited ores often contain relatively .... PAPER III. Formation of sulphur oxyanions and their influence on antimony electrowinning from.

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Pyrometallurgical Processing Technologies for Treating ... - Perumin

copper sulfide ore reserves requires new strategies to ..... ores. ➢This study used hydrated lime to react with arsenic and sulfur under typical roasting conditions. ➢The results showed more than 99.9% of the arsenic and 98% of the sulfur ... recover antimony and precious metals while changing arsenic and sulfur to sodium...

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Mining and Metallurgical Waste Management in the Chilean ... - IMWA

Waste management and disposal has become a major concern for the Chilean mining and metallurgical copper .... mining extraction. It is referred as sterile to ore ratio and will usually increase with the deep of the open pit. This material is usually dumped in very huge amounts that .... Arsenic and other impurities (Sb, Bi,.

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Management of mining, quarrying and ore-processing waste in the ...

Key words: mining waste, mines, quarry, exploitation, ore processing, environment, impact, inventory, legislation, simplified ..... Table 6: Industrial minerals production and waste moved in the extraction process (10- year estimation x .... It concerns mines associated with the following substances: antimony, bauxite, chromite...

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Arsenic Pyrite Gold Extraction by Alkaline Leaching Oxidation

Jul 22, 2017 ... Alkaline pressure oxidation was also used to treat high-acid-consuming mercury gold ore. Alkaline pressure oxidation yields a residue composed primarily of iron oxide, which is environmentally safe and compatible with the cyanidation process. Solubilized arsenic and sulfur are recovered as relatively...

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ore processing - Midas Gold

Ore processing for the Stibnite Gold Project is the separation of gold, silver and antimony from its host rock. .... antimony recovery process or, in the case of low antimony feed or oxide ore, direct to gold recovery circuits. ... then a promoter reagent (a sulfur and phosphate-bearing organic chemical marketed as Aerophine.

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Characteristics and adaptability of iron-and sulfur-oxidizing ...

Commercial bioleaching can take place using what may be considered to be a low technology process, the irrigation of waste ore dumps [13]. The metal recovery process may be made more efficient by the construction and irrigation of especially-designed heaps rather than by the irrigation of an existing dump that has not...

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78-216B.PDF - CDC

metal, oxide, and ore for consumption; predominant sources were the Republic ... from ore, 11+ ,618 tons from primary smelters) , and 5582. (almost 20,000 tons) was secondary (recycled) metal [2] . Secondary antimony is recovered chiefly from ... antimony and sulfur after an accident that occurred while he was making a.

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US5573739A - Selective bismuth and antimony removal from ...

Typical impurities are precious metals, nickel, lead, iron, selenium, tellurium, arsenic, antimony and bismuth. Most of the impurities form an insoluble slime which falls to the bottom of the cell and is normally treated for by-product metal recovery. However, some of these impurities, notably antimony and bismuth, are soluble...

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Environmental Aspects of Copper Production - Princeton University

tic producers, the sulfuric acid is a salable by-. Figure 8-1.-Environmental Impacts of Copper Production. Fugitive dust. Sulfur dioxide, particulate emissions. AIR ...... SOURCE: U.S. Environmental Protection Agency, Wastes from the Extraction and Beneficiation of Metallic Ores, Phosphate Rock, Asbestos, Overburden from...

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FLOTATION OF ORES AND WASTE WATERS

May 25, 2016 ... using the circular hydrometallurgical process ensures that the maximum amount of mined metal is recovered. Re- ducing pollution helps to improve company profitability. Key words: ore, mine, flotation, waste, waters. INTRODUCTION ... the minimization of the negative environmental impact of mining and...

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Guide to Hazardous Waste and Hazardous Recyclable Material ...

Mar 9, 2017 ... Appendix 1: Reasons Why Wastes or Materials are Intended for Disposal/Recycling (Table 1 of OECD Decision C(88)90/Final) ... R14, Recovery or regeneration of a substance or use or re-use of a recyclable material, other than by any of operations R1 to R10 .... A200, Extraction of metallic ores.

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the recovery of sulfur from sulfide ore smelter waste gases ...

the basis of a recovery process to abt8in aulphur from waste gases, ... weather patterns, have generally minimized the effect of so2 on people, ... was considered essential to recover sulphur in the elemental form, since this incurs minimum transportation costs per unit weight of sulphur. Ontario is already well supplied with...

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"Sulfur Dioxide," in: Ullmann's Encyclopedia of ... - Wiley Online Library

Production in Nonferrous Metal Sulfide Ore. Processing . ... the scale on which it is produced, waste sulfur dioxide is now ...... recovery. The temperature is uniform in the whole system due to the high amount of circu- lated material and the effect of cooling (or heat- ing) is transferred to the total inventory of the system.

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hydrometallurgical recovery of valuable metals from ... - Doria

Dec 11, 2013 ... Wastes and side streams in the mining industry and different anthropogenic wastes often ... In this thesis, solvent extraction and ion exchange are the most important hydrometallurgical separation methods ..... refining become scarce, the metallurgical industry has been turning to lower grade ores, solid.

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Separation and Recovery of Antimony from High Arsenic ... - J-Stage

Feb 3, 2017 ... The recovery of antimony from high arsenic-bearing flue dusts was carried out by a selective oxidation roasting process using MnO2, in which ... and antimony; selective oxidation;. MnO2; waste utilization. 1. ... altered red sulfur arsenic antimony sodium ore, altered alle- montite and varieties white arsenic in...

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Chapter 82 - Metal Processing and Metal Working Industry

Two metal recovery technologies are generally used to produce refined metals, pyrometallurgical and hydrometallurgical. ..... The major hazards are exposure to ore dusts during ore processing and smelting, metal fumes (including lead, arsenic and antimony) during smelting, sulphur dioxide and carbon monoxide during...

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Final Summary Report of Mineral Industry Processing Wastes

Bromine 2-85 Clays 2-89 Coal: Beneficiation, Gasification, Liquification, Coking 2-93 Feldspar 2-101 Fluorspar 2-104 Iodine 2-109 Kyanite 2-113 Olivine 2-116 Phosphate Rock, ... 3-89 3-29 Recovery of Germanium During Zinc Ore Processing 3-94 3-30 Process Flow Sheet for Gallium and Germanium Production .... 3-95...

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Recovery of Sulphur from Waste Gypsum

Oct 23, 2009 ... Sulphur with the purity between 95% and 99% was recovered from waste gypsum in this study. 1. INTRODUCTION ... the reduction of oxidized ores. These costs are .... Table 2 shows the effects of various reaction parameters on the CaS yield during the thermal conversion of gypsum to. CaS. Table 2.

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How can metal mining impact the environment? | American ...

Operations and waste products associated with metal extraction and processing are the principal causes of environmental concerns about metal mining. ... As the amount of waste rock in open pit mines is commonly two to three times the amount of ore produced, tremendous volumes of waste rock are removed from the pits...

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Recycling, Reuse and Rehabilitation of Mine Wastes - Elements ...

effective reuse and recycling of waste streams. The concept of waste as a resource is not new to the modern world. Since the dawn of civilization, the recycling or reuse of originally discarded materials, including mine wastes, has been practised. For example, during Roman times, iron ore slags were used in construction,...

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Control Of Sulfur Oxide Emissions From Primary Copper, Lead And ...

affect sulfur oxide recovery; hydrometallurgical pro- cesses that avoid generation of sulfur oxides. Emphasis ... The history of the development of zinc ore roasting is closely associated with both air pollution problems ... waste gas stream containing 4-7% of SO2 that could be used as feed to an acid plant. Within about the last...

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Environmental impacts of unmanaged solid waste at a ... - Hal-BRGM

Jan 30, 2014 ... Environmental impacts of unmanaged solid waste at a former base metal mining and ore ... A -Extraction waste, constituted of rocks with variable amounts of ore and other metals. Waste heaps are potentially hazardous through acid mine drainage (AMD), requiring adequate water management. (JRC, 2004);.

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Investigation of Flotation Parameters for Copper Recovery from ...

Feb 22, 2012 ... a mixed ore sample with As content at 3.16 and 18.25 mass% Cu for the flotation study. Effect of particle size, slurry pH, flotation time, collector type, collector addition or dosage and depressants were investigated to evaluate efficiency of enargite separation from chalcopyrite and recovery of both minerals...

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Ore minerals - Mineralogical Society of America

Aluminum - The ore is mined from rocks that have been exposed to weathering in a tropical environment, bauxite. The main ore minerals in bauxite are gibbsite, bohmeite, and diaspore. Antimony - The primary ore of antimony is it's sulfide, stibnite. Arsenic - Recovered from other metal processing streams (primarily from the...

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US8888890B2 - Ore leaching method for metals recovery - Google ...

Oct 6, 2011 ... With complex ores with mixed composition numerous other components are present. Therefore the amount of sulfurous acid and pH adjustment required must be determined in the field by trial and error as bicarbonates, and other compounds materially affect the amount of sulfur dioxide and acid required...

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METALS RECYCLING - insead

Jun 9, 1997 ... Annual production (i.e., extraction) of just three metal ores ... waste. This was not always true. Until the relatively recent past, metals were never discarded. They were too scarce and too valuable. During the last two ..... U.S., and 43% of the sulfur in lead ore was recovered as sulfuric acid [USBM 1975].

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technogenic impact of sulphide-containing wastes produced by ore ...

Nov 1, 2017 ... by oxidation of sulphide sulphur (Favas et al.,. 2016; Han et al., 2017; Nleya et al., 2016). This ... The paper provides an assessment of the potential technogenic impact of sulphide- containing wastes produced by ore extraction and processing at the Ozernoe deposit, which is currently at the initial stage of...

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environmental impacts at coal waste disposal sites - Global NEST ...

During beneficiation of coal at the coal mining area of Tula, Russia, huge volumes of coal wastes with ... others containing Fe, Cu, As, Sb, Bi, Se or Mo can produce acidic solutions upon oxidation. Pyrite is the major source of CMD generation in coal waste disposal sites. ... species of sulfur and iron-oxidizing bacteria, such.

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Antimony oxide - Environment and Climate Change Canada

Screening Assessment for the Challenge. Antimony trioxide. (Antimony oxide). Chemical Abstracts Service Registry Number. 1309-64-4. Environment Canada. Health Canada ... to antimony trioxide and critical effect levels in experimental animals, it is concluded that ..... Mine effluents may contain oxidized forms of sulphur-.

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recycling of copper, lead and zinc bearing wastes - OECD.org

with the granting of authorisations for the transfrontier movements of wastes for recovery under the OECD ... such as refining or beneficiation of ores or production intermediates from mining/metallurgical operations. ...... of antimony, arsenic, beryllium, cadmium, chlorine, mercury, selenium, sulphur or tellurium, or cyanides,.

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Mobility and chemical fate of antimony and arsenic in ... - gsecars

on X-ray absorption spectroscopy (XAS) measurements reduced As(III) and Sb(III) were identified in mine waste materials, whereas ... Therefore, one of the key factors in considering the impact of sulfide oxidation and disso- .... several of which served as a primary source of antimony ore throughout. World Wars I and II...

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Metallurgical recovery of metals from electronic waste: A review

Dec 24, 2015 ... impact. It is believed that biotechnology has been one of the most promising technologies in metallurgical processing. Bioleaching has been used for recovery of precious metals and copper from ores for many years. However, limited research was carried out on the bioleaching of metals from electronic...

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