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One-step extraction of antimony from low-grade stibnite

2015-4-15  The extraction of antimony from low-grade stibnite in eutectic Na 2 CO 3 –NaCl molten salt using ZnO as a sulphur-fixed agent was studied. The results of the experiments on the reaction mechanism indicate that the reaction courses of antimony and sulphur were Sb 2 S 3 →Sb 2 O 3 →Sb and Sb 2 S 3 →ZnS. Sulphur was fixed in the form of ZnS, while molten salt did not react with other

(PDF) Antimony Production and Commodites

low-grade concentrate and the heavy product from the heavy medi a separation are ground to -10 . Oxide Reduction: The oxides of antimony are redu ced to metal with

Extraction of Antimony

Low-grade ores, which generally contain oxidised minerals in addition to sulphides, are first roasted to produce either the non-volatile tetroxide or the volatile trioxide. With oxidised ores recovery of antimony is incomplete unless anthracite is added to the charge. The reduction of oxides of antimony may also be effected by the action of

Efficient Bath-Smelting Reduction of Antimony Oxide in

2019-1-2  An FeO-SiO2-CaO-Na2O quaternary slag with low melting point was developed for the bath-smelting reduction of Sb2O3. First, the optimum composition of the designed slag was determined through practical experiments to be 36.2% FeO, 31.9% SiO2, 12.0% CaO, and 20.0% Na2O, such that FeO/SiO2 was 1.14. The effects of the main variables influencing the yield and content of antimony in

Recovery of Antimony: A Laboratory Study on the Thermal

2018-1-11  Antimony is typically classified as a volatile heavy metal, and low-grade ores are commonly produced by pyrometallurgical methods . Industrially, reduction of

One-step extraction of antimony from low-grade stibnite

The extraction of antimony from low-grade stibnite in eutectic Na2CO3–NaCl molten salt using ZnO as a sulphur-fixed agent was studied. The results of the experiments on the reaction mechanism

Antimony Smelting Mineral Processing & Metallurgy

2016-3-18  A. Shaft furnaces and condensing chambers for the volatilization process, to roast the low-grade ore or the liquation residue, generally containing 15 to 30 per cent. Sb, and to condense the volatile trioxide. Fig. 1 shows the Herrenschmidt type used

The Metallurgy of Antimony Request PDF

Low grade sulphide ores (5e25% antimony) are volatilized to antimony trioxide through roasting and volatilization (at about 1000 O C). Reduction of Sb(V) was not observed in the presence of

Effect of antimony on low-temperature tensile

2020-5-1  The effects of antimony (Sb) on the deformation behaviour of high-grade non-oriented silicon steel at a low temperature were studied by using a Gleeble-3800 thermal simulator and the field-emission scanning-electron microscope.

Chemistry: Properties and Application of Sb-Antimony by

2018-9-15  Antimony is a semi metallic chemical element in Period 5 and Group 15 of the Periodic Table of chemical elements. Because it is semi metallic, it exists as both a metal and non-metal. The metallic

(PDF) Antimony Production and Commodites

low-grade concentrate and the heavy product from the heavy medi a separation are ground to -10 . Oxide Reduction: The oxides of antimony are redu ced to metal with charcoal in reverberatory .

One-step extraction of antimony from low-grade stibnite

The extraction of antimony from low-grade stibnite in eutectic Na2CO3–NaCl molten salt using ZnO as a sulphur-fixed agent was studied. The results of the experiments on the reaction mechanism

Producing Metallic Antimony with Low Arsenic Content

2018-7-27  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. To reduce the arsenic content in the rough metal to 0.1%

Atomically dispersed antimony on carbon nitride for the

2021-5-21  However, the low activity and selectivity of the two-electron oxygen reduction reaction (ORR) in the photocatalytic process greatly restricts the H 2 O 2 production efficiency.

Recovery of Antimony: A Laboratory Study on the

Antimony is typically classified as a volatile heavy metal, and low-grade ores are commonly produced by pyrometallurgical methods [20]. Industrially, reduction of antimony oxide to metallic antimony is achieved by heat-ing and the addition of carbon in a reverberatory furnace. Volatilization of antimony can be reduced by the addition

[PDF] One-Step Extraction of Antimony in Low

A new process for one-step extraction of antimony in low temperature from stibnite concentrate by reductive sulfur-fixation smelting in sodium molten salt, using iron oxide as sulfur-fixing agent, was presented. The influences of molten salt addition and composition, ferric oxide dosage, smelting temperature and duration on extraction efficiency of antimony were investigated in details

Extracting antimony from high arsenic and gold

2019-6-1  The antimony content in crude antimony was 94.31%. Although this process with short flow could eliminate the low-concentration SO 2 pollution, the antimony recovery rate and the antimony content in crude antimony were low. In the treatment of high arsenic and gold-containing stibnite concentrate, the problem of arsenic alkali residue is still

The Metallurgy of Antimony Request PDF

Low grade sulphide ores (5e25% antimony) are volatilized to antimony trioxide through roasting and volatilization (at about 1000 O C). Reduction of Sb(V) was not observed in the presence of

Effect of antimony on low-temperature tensile

2020-5-1  The effects of antimony (Sb) on the deformation behaviour of high-grade non-oriented silicon steel at a low temperature were studied by using a Gleeble-3800 thermal simulator and the field-emission scanning-electron microscope.

Reduction of Antimony Mobility From Sb-rich Smelting

2021-9-29  1. Introduction. Antimony (Sb) is a metalloid element with potential toxicity and carcinogenicity, and is mainly in the form of inorganic Sb(III) and Sb(V) (Andreae et al., 1981).The toxicity of Sb(III) compounds is more than ten times of that of Sb(V) (Smichowski, 2008).With the development of mining industry, antimony pollution is becoming an increasingly severe problem of global concern

Atomically dispersed antimony on carbon nitride for the

2021-5-21  However, the low activity and selectivity of the two-electron oxygen reduction reaction (ORR) in the photocatalytic process greatly restricts the H 2 O 2 production efficiency.

One-step extraction of antimony from low-grade stibnite

The extraction of antimony from low-grade stibnite in eutectic Na2CO3–NaCl molten salt using ZnO as a sulphur-fixed agent was studied. The results of the experiments on the reaction mechanism

Antimony Smelting Mineral Processing & Metallurgy

2016-3-18  A. Shaft furnaces and condensing chambers for the volatilization process, to roast the low-grade ore or the liquation residue, generally containing 15 to 30 per cent. Sb, and to condense the volatile trioxide. Fig. 1 shows the Herrenschmidt type used

Kinetic studies for sulfur-fixing and roasting reduction

2019-1-1  Our team once proposed a one-step process to extract antimony from low-grade stibnite in Na 2 CO 3 NaCl binary molten salt at low temperature (600–900 °C) using zinc oxide (ZnO) as a sulfur-fixing agent. Sulfur is fixed in the form of ZnS, and antimony oxide is directly converted into antimony metal.

Cas 7440-36-0,Antimony lookchem

Antimony is obtained from its ores, stibnite, Sb2S3 or tetrahedrite, 3Cu2S . Sb2S3. The metal is recovered from high-grade stibnite by reduction with iron: Sb2S3 + 3 Fe → 2 Sb + 3 FeS Alternatively, low-grade stibnite ore is converted to its oxide which is then reduced with carbon. Tetrahedrite may be treated with sodium sulfide solution.

One-Step Extraction of Antimony in Low Temperature

2016-7-7  A new process for one-step extraction of antimony in low temperature from stibnite concentrate by reductive sulfur-fixation smelting in sodium molten salt, using iron oxide as sulfur-fixing agent, was presented. The influences of molten salt addition and composition, ferric oxide dosage, smelting temperature and duration on extraction efficiency of antimony were investigated in details

Reduction of Antimony Mobility From Sb-rich Smelting

2021-9-29  1. Introduction. Antimony (Sb) is a metalloid element with potential toxicity and carcinogenicity, and is mainly in the form of inorganic Sb(III) and Sb(V) (Andreae et al., 1981).The toxicity of Sb(III) compounds is more than ten times of that of Sb(V) (Smichowski, 2008).With the development of mining industry, antimony pollution is becoming an increasingly severe problem of global concern

(PDF) Thiol-induced reduction of antimony(V) into

441 Thiol-induced reduction of antimony(V) into antimony(III): A comparative study with trypanothione, cysteinyl-glycine, cysteine and glutathione Cla´udio dos Santos Ferreira1,Patricia Silveira Martins2,Cynthia Demicheli1, Christian Brochu3,Marc Ouellette3 & Fr´ed´eric Fr´ezard2,∗ 1 Departamento de Qu´ımica, Instituto de

Thiol-induced reduction of antimony(V) into antimony(III

2004-10-7  First, the low rate tained approximately 30% of antimony by weight, as of reaction between GSH and Sb(V) in the form of determined by atomic absorption spectroscopy. meglumine antimonate might be attributed to a slow oxidation-reduction reaction between Sb(V) and GSH Reduction of oxidized trypanothione and glutathione and/or to the ability of

Chemistry: Properties and Application of Sb-Antimony by

2018-9-15  Antimony is a semi metallic chemical element in Period 5 and Group 15 of the Periodic Table of chemical elements. Because it is semi metallic, it exists as both a metal and non-metal. The metallic