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A selective process for extracting antimony from ...

2017-5-1  The leaching recoveries of antimony, gold, and arsenic in the first step were 96.64%, 1.44%, and 0.41%, respectively. The precipitation ratio of antimony exceeded 99.80% during the second step. The synthesized sodium pyroantimonate product exhibited a regular tetragonal morphology.

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Method for selective precipitation of iron, arsenic and ...

2012-11-13  As people in the art will now be in a position to appreciate, the method allows selective precipitation of iron, arsenic and antimony, in the presence of dissolved base metals including cobalt (Co 2+), nickel (Ni 2+), copper (Cu +2) and zinc (Zn +2), based on acid digestion of a polymetallic oxides substrate obtained directly as an ore, such as laterites or resulting from the oxidation of polymetallic

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Selective Separation of Arsenic from High-Arsenic Dust in ...

2021-5-14  The selective separation of arsenic in the NaOH-S system from arsenic dust containing Pb, Sb, and Zn was studied by central composite design response surface method in this investigation. The results indicated that the presence of elemental sulfur can prevent lead and antimony leaching from arsenic dust

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Selective removal of arsenic from high arsenic dust in the ...

2021-6-1  A selective removal of arsenic from lead‑antimony-zinc-containing high arsenic dust in NaOH-S system was proposed. • NaOH-S system could solve the problem of high antimony leaching efficiency in the process of arsenic removal in NaOH-Na 2 S system.. 98.17% of Sb, 99.85% of Pb and 99.75% of Zn remained in the leaching residue with the arsenic concentration less than 0.1%.

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Determination of arsenic, antimony, and tin in lead-, tin ...

2012-4-27  U. S. DEPARTMENT OF COMMERCE NATIONAL BUREAU OF STANDARDS RESEARCH PAPER RP1116 Part of Journal of Research of the J{ational Bureau of Standards, Volume 21, July 1938 DETERMINATION OF ARSENIC, ANTIMONY, AND TIN IN LEAD~, TIN~, AND COPPER~BASE ALLOYS By John A. Scherrer ABSTRACT A method is described in which arsenic, antimony, and tin

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Selective Extraction of Antimony and Arsenic from ...

2016-12-1  By selectively removing antimony and arsenic impurities from decopperization slime through alkaline sulfide leaching, the resulting residue which is

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THE ALKALINE SULFIDE HYDROMETALLURGICAL

2009-8-19  Hydrometallurgical methods can be employed for treatment of gold, arsenic, antimony, tin and mercury containing materials, concentrates and ores as well as complex ones containing any number of metals. The alkaline sulfide system is one of these and is essentially a mixture of sodium sulfide and sodium hydroxide. This is a unique hydrometallurgical system as it is a very selective lixiviant for the

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Analytical Methods for Determining Arsenic, Antimony

methods, arsenic, antimony, selenium Review Introduction Determinations of arsenic, antimony and selenium by atomic absorption spectrometry were described in a previous article [1]. The method of absorption atomic spectrometry is neither the only nor the best for deter-mining arsenic, antimony and selenium. Depending on

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Selective Separation of Arsenic from Lead Smelter Flue ...

Meanwhile, the leaching efficiencies of antimony, cadmium, indium and lead were less than 4.0%, basically achieving the selective separation of arsenic from lead smelter

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US9222147B2 - Method for selective precipitation of iron ...

A method for selectively processing a polymetallic oxide solution containing a plurality of base metals comprising at least one of: Cu, Co, Ni, Zn associated with iron, comprising acid leaching the solution; recovering a filtered leachate; oxidizing the leachate; and adjusting the pH of the leachate in presence of a complexing agent; wherein the acidic solution is one of: i) a hydrochloric ...

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Selective leaching of arsenic and antimony from a ...

The present work aimed to evaluate the selective leaching and precipitation processes of arsenic in oxide form, As 2 O 3 , from the dust collected from ESP of a Pierce−Smith copper converter.

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Selective Extraction of Antimony and Arsenic from ...

2016-12-1  The aim of the present study is to selectively extract antimony and arsenic from decopperization slime through alkaline sulfide hydrometallurgy with a view to recycle the obtained solid residue within the copper smelter, and also regenerate the sulfide

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Selective Separation of Arsenic from Lead Smelter Flue ...

Meanwhile, the leaching efficiencies of antimony, cadmium, indium and lead were less than 4.0%, basically achieving the selective separation of arsenic from lead smelter flue dust. More than 99.0% of arsenic was converted into calcium arsenate product and

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Selective determination of trace arsenic and antimony ...

Selective determination of trace arsenic and antimony species in natural waters by gas chromatography with a photoionization detector Masahiro Yamamoto Faculty of Science and Technology, Keio University, Hiyoshi, kouhoki‐ku, Yokohama‐shi 223, Japan

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Selective bismuth and antimony removal from copper ...

1994-10-28  The present invention is concerned with a process for selectively removing antimony, bismuth, or both, from acidic solution by submitting the solution to oxidizing conditions thereby causing the selective precipitation of antimony and bismuth; filtering precipitated antimony and bismuth; and submitting the oxidized solution to reducing conditions before it is returned to the electrorefining cell.

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Selective extraction of arsenic and antimony from gold ...

2021-1-6  Selective extraction of arsenic and antimony from gold-bearing sludge using two-stage alkaline Resources, Conservation and Recycling ( IF 10.204) Pub Date : 2021-01-05, DOI: 10.1016/j Yongliang Wang, Xiang Liu, Jingmin Yan, Shufeng Ye

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Selective Leaching of Arsenic from High-Arsenic Dust in ...

2021-6-29  This study investigated the selective removal of arsenic from high-arsenic dust in alkaline systems and the effects of different leaching conditions. The results indicated that the liquid–solid ratio, NaOH concentration, and sulfur dosage had a significant influence on the process. The leaching efficiency of arsenic reached 99.57%, while that of lead was as low as 0.03% under appropriate ...

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Analytical Methods for Determining Arsenic, Antimony

methods, arsenic, antimony, selenium Review Introduction Determinations of arsenic, antimony and selenium by atomic absorption spectrometry were described in a previous article [1]. The method of absorption atomic spectrometry is neither the only nor the best for deter-mining arsenic, antimony and selenium. Depending on

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Process for selective removal of bismuth and antimony

Their precipitation from electrolyte solutions, in which the pH is below 0 has, however, proven difficult. The object of this invention is thus to provide a method for the selective removal of antimony and bismuth from electrolyte solutions, which contain very large amounts, 150 to 230 g/l, sulfuric acid.

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Determination of arsenic, antimony, and tin in lead-, tin ...

2012-4-27  U. S. DEPARTMENT OF COMMERCE NATIONAL BUREAU OF STANDARDS RESEARCH PAPER RP1116 Part of Journal of Research of the J{ational Bureau of Standards, Volume 21, July 1938 DETERMINATION OF ARSENIC, ANTIMONY, AND TIN IN LEAD~, TIN~, AND COPPER~BASE ALLOYS By John A. Scherrer ABSTRACT A method is described in which arsenic, antimony, and tin

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Selective leaching of arsenic and antimony from a ...

The present work aimed to evaluate the selective leaching and precipitation processes of arsenic in oxide form, As 2 O 3 , from the dust collected from ESP of a Pierce−Smith copper converter.

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Selective determination of trace arsenic and antimony ...

Selective determination of trace arsenic and antimony species in natural waters by gas chromatography with a photoionization detector Masahiro Yamamoto Faculty of Science and Technology, Keio University, Hiyoshi, kouhoki‐ku, Yokohama‐shi 223, Japan

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Selective Extraction of Antimony and Arsenic from ...

RESEARCH ARTICLE Selective Extraction of Antimony and Arsenic from Decopperization Slime Using Experimental Design Alphonce Wikedzi1 • Samuel A. Awe1,2 The Minerals, Metals Materials Society ...

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Selective removal of arsenic from high arsenic dust in the ...

Abstract This work investigated the selective removal of arsenic from a lead‑antimony‑zinc-containing high arsenic dust in alkaline solution. The effects of sodium hydroxide (NaOH) concentration, temperature, leaching time, liquid-solid ratio (L/S) and the presence of elemental sulfur on the dissolution of arsenic (As), antimony (Sb), lead (Pb) and Zinc (Zn) in NaOH solution were studied.

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Selective sulfide precipitation of copper ions from arsenic ...

2019-11-28  Monoclinic pyrrhotite was found to be the most effective for copper sulfide precipitation, which can be used for the selective precipitation of copper ions from arsenic wastewater. More than 96% copper ions were removed with little loss of arsenic, contributing to a copper product of 20.2% Cu and 0.7% As, which can serve as raw materials of copper metallurgy.

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DGT and selective extractions reveal differences in arsenic ...

2019-12-17  DGT and selective extractions reveal differences in arsenic and antimony uptake by the white icicle radish (Raphanus sativus). Environmental Pollution ( IF 8.071 ) Pub Date : 2019-12-16 , DOI: 10.1016/j.envpol.2019.113815

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Analytical Methods for Determining Arsenic, Antimony

methods, arsenic, antimony, selenium Review Introduction Determinations of arsenic, antimony and selenium by atomic absorption spectrometry were described in a previous article [1]. The method of absorption atomic spectrometry is neither the only nor the best for deter-mining arsenic, antimony and selenium. Depending on

Get Price

Process for selective removal of bismuth and antimony

Their precipitation from electrolyte solutions, in which the pH is below 0 has, however, proven difficult. The object of this invention is thus to provide a method for the selective removal of antimony and bismuth from electrolyte solutions, which contain very large amounts, 150 to 230 g/l, sulfuric acid.

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Determination of arsenic, antimony, and tin in lead-, tin ...

2012-4-27  U. S. DEPARTMENT OF COMMERCE NATIONAL BUREAU OF STANDARDS RESEARCH PAPER RP1116 Part of Journal of Research of the J{ational Bureau of Standards, Volume 21, July 1938 DETERMINATION OF ARSENIC, ANTIMONY, AND TIN IN LEAD~, TIN~, AND COPPER~BASE ALLOYS By John A. Scherrer ABSTRACT A method is described in which arsenic, antimony, and tin

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COPRECIPITATION WITH FERRIC HYDROXIDE: AN

2015-3-30  radioisotopes copper-64 and arsenic-76, and of arsenic-76 and antimony-122, in Figures 1.1 and 1.2 When using high resolution solid-state gamma ray Ge(Li) detectors it is possible to separate the peaks o' copper and arsenic, but not always satisfactorily the ones of arsenic and antimony

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