آخرین محصولات
Study on Pre-removal Antimony from Antimony–Gold
Therefore, antimony is a harmful element and needs to be removed in advance, no matter it is collected by copper or lead smelting system or by cyanide leaching process. Slurry electrolysis (SE) is characterized by short process flow and can realize the leaching, partial solution purifying, and electrowinning stages in an electrolytic cell [ 12 ...
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Microbial adaptation in vertical soil profiles contaminated by an
Antimony mining has resulted in considerable pollution to the soil environment. Although studies on antinomy contamination have been conducted, its effects on vertical soil profiles and depth-resolved microbial communities remain unknown. The current study selected three vertical soil profiles (0-2 …
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Recovery of alkali, selenium and arsenic from antimony smelting …
Arsenic-alkali residue sample used in this study was supplied from an antimony smelting plant in Hunan, China. The moisture content of arsenic-alkali residue was 31.2 wt % (Mass fraction), and its related chemical contents by ICP and chemical analysis are given in Table 1.It can be seen from the entitative photograph of arsenic …
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New method developed for producing some metals
The MIT researchers were trying to develop a new battery, but it didn't work out that way. Instead, thanks to an unexpected finding in their lab tests, what they discovered was a whole new way of producing …
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Extracting antimony from high arsenic and gold
The conventional extraction of antimony from stibnite and jamesonite involves a two-step pyrometallurgical process comprising volatilization roasting and carbothermal smelting (Ouyang et al., 2019; Tian et al., 2016).
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Characterization of antimony-containing metallurgical residues for
The third neglected but common Sb-containing metallurgical residue is the antimony slag (AS) derived from the smelting furnace for ATO production. To the best of our knowledge, there have been few studies on Sb recovery from AS. There is little understanding on the physical and chemical features of AS.
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Thermodynamic modeling of antimony removal from complex …
Trans. Nonferrous Met. Soc. China 32(2022) 4113âˆ'4128 Thermodynamic modeling of antimony removal from complex resources in copper smelting process Song-song WANG1,2, Qin-meng WANG1,2, Xue-yi GUO1,2, Qing-hua TIAN1,2, Sheng-li QU3, Zhi WANG4, Ming-xing HUANG1,2 1.
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THE RARER METALS.
Chapman Smelting Co., 409 Battery Street, San Francisco, Cal. Antimony Smelting & Refining Co., Seattle, Wash. Besides these the American Star Antimony Co., Gilham, Ark., has a plant for the electrolytic reduction of antimony, and the following firms smelt antimony and lead ores to make antimonial lead:
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Antimony Smelter
Updated: November 1, 1994. Antimony Smelter. The largest antimony smelter in the world in 1945 was just north of Laredo in Webb County. Initially it had been …
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Microbial adaptation in vertical soil profiles contaminated by an
Rui Xu and others, Microbial adaptation in vertical soil profiles contaminated by an antimony smelting plant, FEMS Microbiology Ecology, Volume 96, Issue 11, November 2020, ... Smelting contamination reduced the alpha diversity of the microbial communities in each profile ...
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Lead processing
As in smelting, the lead is first melted and again allowed to cool below the freezing point of copper, which crystallizes and, along with any remaining nickel, cobalt, and zinc, is removed by skimming. ... Antimony is removed by oxygen injection, and, after copper and other impurities are removed, the molten lead is cast into blocks, or "pigs ...
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Antimony Smelting
Antimony Smelting. China now leads the world in antimony production, having contributed during recent years something over 60 …
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Microbial adaptation in vertical soil profiles …
smelting pro ces ses are the leading source s of Sb and As soil pollution [4]. Gener ally, the c oncentr a tions of Sb a nd As in contaminated soils acc umulate in surface soils ( by tensive
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Purification of crude As2O3 recovered from antimony smelting …
Abstract. In this study, a combined process of acidic oxidation leaching and SO2 reduction was proposed to purify crude As2O3 recovered from antimony smelting arsenic-alkali residue. The effects ...
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A New Pyrometallurgical Process for Producing Antimony White …
Antimonial dust is a by-product of lead smelting and an important material for extracting antimony. A new pyrometallurgical process for producing antimony white from the antimonial dust is reported. The process mainly consists of three steps, which are reduction smelting, alkaline refining, and blowing oxidation. First, the reduction smelting …
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Valency distributions and geochemical fractions of arsenic and antimony
Arsenic and antimony co-contamination in non-ferrous metals smelting soil was studied with various soil particle sizes. • Arsenic and antimony are easier to concentrate in soil particle size of ≤ 0.25 mm. • The arsenic in the non-ferrous metal smelting soil is mainly As(Ⅴ), while the antimony is mainly Sb(Ⅲ).
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Microbial community structures and their driving factors in
This study investigated soil microbial community in a typical gathering area of antimony mining and smelting in South China. The physical and chemical properties of different soils (mining waste dumps, flotation tailings, and smelting slag) and depths (0–20 cm, 40–60 cm, and 80–100 cm) were compared. The results showed that antimony (Sb) …
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Study of antimony (III) binding to soil humic acid from an antimony
In this study, soil properties and Sb contamination level were examined at four locations at Sb smelting site and the capacity of Sb (III) binding to an isolated HA was investigated at site 1. Elemental composition and the chemical nature of HA–Sb (III) composites were compared with parent HA for identification of carboxyl and hydroxyl ...
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MIT's accidental smelting discovery unlocks the potential …
Antimony has a melting point of 631°C compared with copper's 1,085°C and iron's 1,540°C melting points. The 'holy grail' would be steel production as it is the number one industrial source of carbon dioxide, the main greenhouse gas.
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Antimony (Sb) and Arsenic (As) in Sb Mining Impacted Paddy …
Foods produced on soils impacted by antimony (Sb) mining activities are a potential health risk due to plant uptake of the contaminant metalloids (Sb) and arsenic (As). Here we report for the first time the chemical speciation of Sb in soil and porewater of flooded paddy soil, impacted by active Sb mining, and its effect on uptake and speciation …
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A hydrometallurgical process for the separation and recovery of antimony
Therefore, high amounts of low-concentration SO 2 and some other released heavy metals cause serious environmental pollution in areas surrounding antimony smelting plants. The pyrochemical process usually requires a high-grade concentrate and is unsuitable for treating low-grade, complex antimony-bearing mineral.
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Microbial adaptation in vertical soil profiles contaminated by antimony
Abstract. Antimony mining has resulted in considerable pollution to the soil environment. Although studies on antinomy contamination have been conducted, its effects on vertical soil profiles and ...
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Selective removal of arsenic from high arsenic dust in the NaOH …
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 …
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Behavior of Tin and Antimony in Secondary Copper Smelting …
This article investigates the behavior of tin and antimony, both commonly present as trace elements in electrical and electronic waste, in secondary (i.e., sulfur-free) copper smelting conditions. The experiments were conducted in oxygen partial pressure range of 10−10–10−5 atm, covering the different process steps in copper smelting.
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Reduction of antimony mobility from Sb-rich smelting …
Reduction of antimony mobility from Sb-rich smelting slag by Shewanella oneidensis: Integrated biosorption and precipitation - ScienceDirect Journal of …
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Antimony Metallurgy | SpringerLink
Antimony smelting is done through the pyrometallurgical process or the hydrometallurgical process, but mostly the pyrometallurgical process. Pyrometallurgical …
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Oxygen-enriched molten pool antimony refining production process
The invention discloses an oxygen-enriched molten pool antimony refining production process, and belongs to the field of smelting of nonferrous metal. The process comprises the following steps: 1) batching: raw materials are uniformly mixed according to a mass ratio to obtain a mixture; 2) granulation: the uniformly mixed mixture is prepared as …
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The Recovery of Pb and Zn in Antimony Smelting Slag
This paper studies the recovery of metals Pb, Zn, and Sb in antimony smelting slagAntimony Smelting Slag by fuming furnaceFuming furnace. The study …
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Antimony | Toxic Substances | Toxic Substance Portal
However, there are companies in the United States that produce antimony as a by-product of smelting lead and other metals. Antimony isn't used alone because it breaks easily, …
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Analysis of Antimony Sulfide Oxidation Mechanism in Oxygen
The phase transformation mechanism of antimony sulfide in the oxygen-enriched smelting system was investigated. The standard Gibbs free energy change (ΔG θ) of reactions in the smelting system at 100 ~ 1400°C were calculated, indicating that the reaction between Sb 2 S 3 and oxygen was liable to occur first, and that the high-valent …
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