(PDF) Remove of arsenic, antimony and bismuth from crude …
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 ...
Adsorption Removal Characteristics of Hazardous Metalloids (Antimony …
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 …
Alkaline oxidative pressure leaching of arsenic and antimony …
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 ...
Antimony Recovery from End-of-Life Products and Industrial …
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 …
Eliminating arsenic impurities from high-purity antimony …
In the process of acid leaching, the nitric acid leaching method can extract arsenic from crude antimony xide. Arsenic oxide and antimony oxide are …
A clean process for recovering antimony from arsenic …
This work uses a nitric acid leaching method to remove As from crude antimony xide. Arsenic oxide and antimony oxide are respectively converted to …
Separation of Arsenic from the Antimony-Bearing Dust
This work uses a nitric acid leaching method to remove As from crude antimony xide. Arsenic oxide and antimony oxide are respectively converted to …
Eliminating arsenic impurities from high-purity antimony …
This method effectively reduces arsenic content to 0.1 %, demonstrating significant efficacy for crude antimony products with high arsenic content. However, …
(PDF) Removal of lead from crude antimony by using NaPO3 …
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.
Selective removal of arsenic from crude antimony xide by …
This work uses a nitric acid leaching method to remove As from crude antimony xide. Arsenic oxide and antimony oxide are respectively converted to …
Alkaline refining of crude lead: a method of arsenic removal …
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 ...
Application of iron-based materials for removal of antimony and arsenic
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], …
Extraction of elemental arsenic and regeneration of calcium oxide …
Semantic Scholar extracted view of "Extraction of elemental arsenic and regeneration of calcium oxide from waste calcium arsenate produced from wastewater treatment" by Kang Yang et al. ... Purification of crude As2O3 recovered from antimony smelting arsenic-alkali residue ... (about) 2 h, the mixture was filtered so as to remove …
Antimony Metallurgy
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.
Process for the removal of arsenic, antimony, tin and other acid oxide
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 ...
Purification of crude As2O3 recovered from antimony smelting arsenic
The removal of arsenic with lead oxide did not introduce impurity anions, and the crystallization performance and stability of the precipitate were relatively better than those of the precipitates ...
Removal of Dimethyl Arsenic Acid from Aqueous Solution …
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 …
A New Pyrometallurgical Process for Producing …
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
Recovery of alkali, selenium and arsenic from antimony smelting arsenic
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 …
Trivalent and Pentavalent Antimony
1.1.1. Nomenclature, synonyms, trade names, molecular formulae, and relative molecular mass. Multiple agents are considered in this monograph as follows: the trivalent antimony compounds antimony(III) oxide (Sb 2 O 3) [antimony xide], antimony(III) chloride (SbCl 3), antimony(III) potassium tartrate (C 8 H 10 K 2 O 15 Sb 2 or the anhydrous …
Separation and recovery of arsenic and alkali products …
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 …
Eliminating arsenic impurities from high-purity antimony …
DOI: 10.1016/j.seppur.2023.125920 Corpus ID: 265885110; Eliminating arsenic impurities from high-purity antimony xide through potassium sulfide co-precipitation …
Purification of crude As2O3 recovered from antimony smelting arsenic
Section snippets Materials. The raw material used in this study was crude As 2 O 3 recovered from arsenic-alkali residue in an antimony smelting plant in Hunan, and its related chemical content by ICP and chemical analysis is given in Table 1. As can be seen from Table 1, the purity of crude As 2 O 3 is 93.6 wt.%, which is lower than the …
Antimony, a pollutant of emerging concern: A review on …
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 …
A Review on Pyrometallurgical Extraction of …
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 …
Availability, Toxicology and Medical Significance of Antimony
2. Mineralogy, Geochemistry, and Availability of Antimony. It is necessary to understand the geological properties of antimony in order to properly assess the impact of related geological processes on public health [28,29].Antimony exists naturally in the Earth's crust and is released into the environment via both natural and mining–industrial …
Selective removal of arsenic from crude antimony xide by …
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 …
Process flowsheet development for selective arsenic removal…
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 ...
Thermal separation of arsenic and antimony oxides
Experiments were carried out to remove arsenic from antimony xide by two techniques: first, by selectively volatilizing the more volatile arsenic xide from a …
Recovery of alkali, selenium and arsenic from antimony smelting arsenic
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 ...