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The results show that arsenic in the crude lead is gradually oxidized by oxygen and lead oxide during arsenic removal process, and the arsenic xide is eventually converted into sodium arsenate ...
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No. 7 Antimony(V) removal from water by iron-zirconium bimetal oxide: Performance and mechanism 1203 Supporting material Supplementary material associated with this article can be found in the online version. References Filella M, Belzile N, Chen Y W, 2002. Antimony in the envi- ronment: a review focused on natural waters: …
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The powdery crude antimony xide is reduced by a carbonaceous reductant in a reverberatory furnace at 1,000–1,200 °C to produce crude antimony. Crude antimony can be produced by the precipitation smelting process. The typical pyrometallurgical antimony production process using sulfide ore is shown in Fig. 1.
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Trans. Nonferrous Met. Soc. China 33(2023) 2216âˆ'2230 Antimony and arsenic substance flow analysis in antimony pyrometallurgical process Ke WANG, Qin-meng WANG, Yuan-lin CHEN, Zhong-chen LI, Xue-yi GUO School of Metallurgy and Environment, Central South University, Changsha 410083, China Received 23 February …
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Antimony and arsenic, which have a high carcinogenicity, should be removed depending on their ionic charge in water. Therefore, we attempted to confirm the adsorption characteristics of antimony and arsenic considering ionic charge to improve removal efficiency. We used palm-based activated carbon (PAC), coal-based activated …
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In this work, the alkaline refining of arsenic in crude lead was studied with a mixture of sodium hydroxide and sodium carbonate as alkaline refining agents. Taking the arsenic removal rate as the research object, the effects of reaction temperature, holding time, Na2CO3:NaOH, the dosage of refining agent were investigated. The arsenic removal …
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This study addresses the environmental concern of organic-arsenic pollution resulting from the discharge of dimethyl arsenic acid (DMA) through non-point sources into surface and groundwater, posing severe health risks. While efforts have primarily focused on eliminating inorganic arsenic, the toxicity of organic arsenic, particularly DMA, has …
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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 …
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In the process of acid leaching, the nitric acid leaching method can extract arsenic from crude antimony xide. Arsenic oxide and antimony oxide are …
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The basis of the concentrate is sodium hexahydroxoantimonate or mineral mopungite. Upon reduction of the concentrate with coke, ground antimony containing 0.34% arsenic was obtained.
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This work uses a nitric acid leaching method to remove As from crude antimony xide. Arsenic oxide and antimony oxide are respectively converted to …
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This method effectively reduces arsenic content to 0.1 %, demonstrating significant efficacy for crude antimony products with high arsenic content. However, …
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DOI: 10.1016/j.jclepro.2019.119673 Corpus ID: 213946528; Recovery of alkali, selenium and arsenic from antimony smelting arsenic-alkali residue @article{Long2020RecoveryOA, title={Recovery of alkali, selenium and arsenic from antimony smelting arsenic-alkali residue}, author={Hu Long and Yajie Zheng and …
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UNITED STATES ANTIMONY CORPORATION PO Box 643 Thompson Falls, Montana 59873 Phone: 406-827-3523 | Fax: 406-827-3543. E-mail: info@usantimony (Please specify if you would like to direct your …
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The mineral phases in the synthesized crude antimony xide are antimony arsenic oxide, senarmontite and cervantite. Arsenic is present mainly as (As, Sb) 2 O 3 solid solution. 2) Increasing HNO 3 concentration, temperature, L/S ratio, and …
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The antimony and lead contents in the slag can thus be reduced to 2.8 wt.% and 0.1 wt.%, respectively. Second, the conventional method of alkaline refining is adopted to remove arsenic from the crude alloy, and arsenic content in the low-arsenic alloy could be decreased to 0.009 wt.%.
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Alkaline refining of crude lead: a method of arsenic removal and the behavior of arsenic in the process. R. Zhu Hailin Long +5 authors Shiwei Li. ... A new technology including hydrothermal leaching,oxidation of antimony oxide and condensation crystallization was proposed in this paper for arsenic alkali residue from antimony …
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Purpose The competitive sorption of arsenite, As(III), and antimonite, Sb(III) on mackinawite (FeS) was investigated, so as to better understand the influence between As(III) and Sb(III) in anaerobic water, soil, or sediment systems rich in FeS. Methods FeS was synthesized and As(III) and Sb(III) were simultaneously or sequentially added into …
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This work uses a nitric acid leaching method to remove As from crude antimony xide. Arsenic oxide and antimony oxide are respectively converted to soluble H3AsO4 and insoluble antimony(III ...
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1. Introduction. Antimony (Sb) and arsenic (As) as metalloids have been widely applied in a variety of industrial processes such as electronic products [1], manufacture of semiconductors, batteries [2], glass, fireworks [3], and mining activities [4].They are among the most detected metalloids in the aquatic environments [5], …
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Experiments were carried out to remove arsenic from antimony xide by two techniques: first, by selectively volatilizing the more volatile arsenic xide from a …
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This work uses a nitric acid leaching method to remove As from crude antimony xide. Arsenic oxide and antimony oxide are respectively converted to …
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Arsenic, antimony and bismuth in crude copper sulfate were removed by oxidization-neutralization-coprecipitation method to meet the quality requirement of copper sulfate for electrowinning copper ...
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In the process of acid leaching, the nitric acid leaching method can extract arsenic from crude antimony xide. Arsenic oxide and antimony oxide are respectively converted into soluble Arsenic acid (H 3 AsO 4) and insoluble Antimony(III) oxide hydroxide nitrate Sb(III)OHN during nitric acid leaching. This process reduces the …
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1. Antimony – general aspects. Antimony comes under group 15 of the periodic table with ground state electronic configuration [Kr]4d 10 5s 2 5p 3. 121 Sb (57.21% abundance) and 123 Sb (42.7% abundance) are the two stable isotopes of antimony. Antimony can possess different oxidation states (such as +5, +3, 0, −3 and …
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This work uses a nitric acid leaching method to remove As from crude antimony xide. Arsenic oxide and antimony oxide are respectively converted to soluble H3AsO4 and insoluble antimony(III ...
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ture is absorbed by arsenic oxide (III) according to reaction (2), A further increase in temperature in the course of clarifi-cation initiates process (3) responsible for removing glass melt from bubbles. At first glance the quality of clarification depends on the quantity of arsenic and (or) antimony oxide, the content of
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oxygen-rich bottom blow furnace to enrich antimony and lead in the crude alloy. The antimony and lead contents in the slag can thus be reduced to 2.8 wt.% and 0.1 wt.%, respectively. Second, the conventional method of alkaline refining is adopted to remove arsenic from the crude alloy, and
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Arsenic oxide and antimony oxide are respectively converted into soluble Arsenic acid (H 3 AsO 4) and insoluble Antimony(III) oxide hydroxide nitrate Sb(III) ... Selective removal of arsenic from crude antimony xide by leaching with nitric acid. Sep. Purif. Technol., 281 (2022), Article 119976. View PDF View article View in Scopus …
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a process for the removal of arsenic antimony and tin impurities from the crude copper comprising: (a) adding to molten copper 4 to 12% calcium oxide bases on the weight of said crude copper and a substance which tends to become demixed from copper oxide in addition to its fluxing properties consisting essentially of flusrspar and forming a ...
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