The presence of arsenic (As) in crude antimony trioxide (Sb 2 O 3) impedes the Sb recovery and results in an environmental issue. Selective As removal from crude antimony trioxide would therefore enable using this residue in commercial Sb 2 O 3 production. This work uses a nitric acid leaching method to remove As from crude antimony trioxide.
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The recovery of antimony from high arsenic-bearing flue dusts was carried out by a selective oxidation roasting process using MnO2, in which the arsenic was removed through a volatilization...
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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 trioxide is eventually converted into sodium arsenate ...
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Results of an investigation aimed at optimizing the fire refining process for purification and extraction of antimony into a high-grade commercial metallic product are presented. Various refining agents were used for refining from lead, tin, iron, and arsenic. As a result of research, a method for fire refining of rough antimony was developed to obtain a high …
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Characterization of a Moderately Halotolerant Antimony-Removing … Antimony (Sb) is a serious problem in the world [ 1, 2 ]. Antimony is a toxic metalloid with a similar toxicity and similar chemical properties to arsenic [ 3 ].
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Generally speaking, the copper dross is treated by rotatory reverberatory furnace. In case of copper dross with high arsenic, tin and antimony, caustic soda plus iron filings are used. In reaction with caustic soda, the arsenic, tin and antimony report to sodium salt as slag to be recovered by hydrometallurgy consequently.
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Experiments were carried out to remove arsenic from antimony trioxide by two techniques: first, by selectively volatilizing the more volatile arsenic trioxide from a mixed oxide sample; and, …
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DOI: 10.1016/j.psep.2024.09.043 Corpus ID: 272627788; Efficient removal and recovery of lead from high arsenic antimony oxide powder @article{Shen2024EfficientRA, title={Efficient removal and recovery of lead from high arsenic antimony oxide powder}, author={Zhikun Shen and Bao-zhong Ma and Yang Zhang and Shuyang Shi and Yubo Liu and Yongqiang Chen and …
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In the process of antimony smelting, arsenic in antimony ores can enter crude antimony. Crude antimony is often refined by adding sodium carbonate to remove arsenic, which produces a kind of arsenic-containing residue in this process. Because the soluble components in the residue are alkaline in water, so the antimony smelters call it as ...
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DOI: 10.1016/j.seppur.2023.125920 Corpus ID: 265885110; Eliminating arsenic impurities from high-purity antimony trioxide through potassium sulfide co-precipitation @article{Zhu2023EliminatingAI, title={Eliminating arsenic impurities from high-purity antimony trioxide through potassium sulfide co-precipitation}, author={Jiangling Zhu and Gang Wang …
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Belonging to the technical field of non-ferrous metal smelting, the invention relates to a method for removal of lead and arsenic in a crude antimony vacuum refining process. The method includes: first of all, adding a metal additive accounting for 1%-5% of the mass of crude antimony to obtain a mixed material, with the metal additive being metal manganese, metal aluminum or a mixture …
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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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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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During the preparation of high-purity arsenic, antimony was primarily removed as it is the main impurity element due to the similar physical and chemical properties shared by both main …
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Most of arsenic in the stibnite enters the antimony oxide powder after a traditional volatilization smelting/roasting process and further transfers into an arsenic-alkali residue in …
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This work uses a nitric acid leaching method to remove As from crude antimony trioxide. Arsenic oxide and antimony oxide are respectively converted to soluble H3AsO4 and insoluble antimony(III ...
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Arsenic, a significant impurity in high-purity antimony trioxide (Sb 2 O 3), has historically been challenging to eliminate efficiently. This paper introduces a novel …
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This work uses a nitric acid leaching method to remove As from crude antimony trioxide. Arsenic oxide and antimony oxide are respectively converted to soluble H3AsO4 and insoluble antimony(III ...
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This work uses a nitric acid leaching method to remove As from crude antimony trioxide. Arsenic oxide and antimony oxide are respectively converted to soluble H3AsO4 and insoluble antimony(III) oxide hydroxide nitrate Sb(III)OHN during HNO3 leaching. The As content in the crude antimony trioxide decreases from 3.0 wt% to 0.4 wt%.
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Condensation-centrifuge filtration method to remove iron and arsenic from crude tin. Yunnan Metall., 2 (1982), pp. 41-47. Google Scholar [2] Z.M. Liu, C.Y. Li, Z.Y. Zhang. The application of adding aluminum to remove antimony and arsenic in solder fire refining production. Nonferr. Metals (smelting Part), 3 (1993), pp. 8-9. View in Scopus ...
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The precipitates were identified as antimony oxide minerals in XRD analysis. ... Selective removal of arsenic from crude antimony trioxide by leaching with nitric acid. Sep. Purif. Technol., 281 (2022), Article 119976. View PDF View article View in …
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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 its use as flame …
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DOI: 10.1016/j.seppur.2021.119976 Corpus ID: 239529632; Selective removal of arsenic from crude antimony trioxide by leaching with nitric acid @article{Ling2021SelectiveRO, title={Selective removal of arsenic from crude antimony trioxide by leaching with nitric acid}, author={Hongbin Ling and Annelies Malfliet and Bart Blanpain and Muxing Guo}, journal={Separation and …
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The current processes for producing high-purity antimony include electrolytic refining, chlorination-distillation-reduction, straight-pull purification, and regional smelting [10].Among these processes, the electrolytic refining method can produce 4 N antimony; however, electrolysis conditions are harsh, and the process produces the highly toxic gases AsH 3 and …
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This work uses a nitric acid leaching method to remove As from crude antimony trioxide. Arsenic oxide and antimony oxide are respectively converted to soluble H3AsO4 and insoluble antimony(III ...
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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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This work uses a nitric acid leaching method to remove As from crude antimony trioxide. Arsenic oxide and antimony oxide are respectively converted to soluble H3AsO4 and insoluble antimony(III ...
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Efficient Removal and Recovery of Lead from High Arsenic Antimony Oxide Powder. ... Crude antimony oxide powder,Eh-pH diagram,Antimonate precipitation,Pb-Sb separation,Crude antimony oxide powder,Eh-pH diagram,HNO3 leaching,Antimonate precipitation. AI Read Science. Must-Reading Tree. Example. Generate MRT to find the research sequence of this ...
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In 2014, Yong et al. invented a vacuum refining method using some additives for removal of lead and arsenic from crude antimony (Sb 97–99.9%, Pb 0.01–1%, As 0.02–0.2%). The technique consisted of two steps of addition of a metal (manganese, aluminum or a combination of both) in 1–5% of the total weight of antimony followed by the ...
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The reduction smelting of antimony oxide from the blast furnace was carried out in the cupellation furnace, and it aimed to reduce the gold content in antimony oxide. Refined antimony was obtained by reducing, smelting, and refining the antimony oxide from cupellation furnace to remove arsenic and lead.
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Based on this, we propose a hydrometallurgical process of Na 2 S-NaOH leaching to achieve As removal, separate Pb-Sb resources, and recover the Sb from the leachate.
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In this study, we developed a concise and efficient chemical method that does not require expensive reagents or equipment, enabling the separation and purification of tellurium, …
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Conventionally, several drawbacks worsened the process from A–BAW to higher pure antimony product in pyrometallurgy of jamesonite. In volatilization roasting, removal efficiency of As 2 O 3 was less than 71.00 %, leading to more than 1.50 % of As still remained in crude antimony trioxide even at more than 600 °C (Brooks and Rankin, 1994, Ling et al., 2022).
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Most of arsenic in the stibnite enters the antimony oxide powder after a traditional volatilization smelting/roasting process and further transfers into an arsenic-alkali residue in the followed ...
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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 …
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L.G. Ye et al./ JMM 51 (1) B (2015) 97 - 103 temperature and does not cause volatilization of antimony because no water vapor generated. The reaction mechanism was studied by TG-DSC and
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