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reduction furnace antimony
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Direct production of antimony by reduction and sulfur …
Blast furnace volatilizing (smelting) and reverberatory furnace process is the main reduction method in the current antimony smelting process, and it is associated with problems such as a long ...
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Minerals | Free Full-Text | Preparation of Antimony Sulfide …
Electrodeposited antimony can be treated with sulfuration–volatilization technology, which causes antimony to volatilize in the form of antimony sulfide. During this process, gold is enriched in the residue, thereby realizing the value-added use of antimony and the recovery of gold. In this study, the thermodynamic conditions of antimony …
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ANTIMONY OXIDE LISTING BACKGROUND
U.S. Antimony Collected from drums of "Reduction furnace slag" that were designated as containing less than 5 percent antimony. AC-1-AO-06 U.S. Antimony Collected from drums of "Reduction furnace slag" that were designated as containing 5 to 10 percent antimony. LI-1-AO-01 Laurel Industries Collected from drums used to collect the material.
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(PDF) Antimony Production and Commodites
furnace, and 45-60% antimony ores are treated by liquation or iron precipitation. A description of each of these, as well as oxide reduction, follows (Motoo, 1974, Vladislav, 1981, Young-Fu and
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Tin Metallurgy
Reduction smelting in Ausmelt furnace produces crude tin, lean tin slag, and dust-bearing flue gas. The Ausmelt furnace tin smelting process is shown in Fig. 1. ... Aluminum reacts with arsenic and antimony to generate high melting point compounds whose density is less than that of tin. Then temperature is decreased and sawdust is …
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METHOD 7062 ANTIMONY AND ARSENIC (ATOMIC …
(furnace AA option) with the following modifications: add 5 mL of concentrated hydrochloric acid just prior to the final volume reduction stage to aid in antimony recovery; the final volume reduction should be to less than 5 mL but no t to dryness to adequately remove excess hydrogen peroxide (see note). After
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Preparation of Antimony Metal by Carbothermal Reduction of Antimony
Antimony is often used as a hardener for alloys. There are few studies on the preparation of antimony from Sb2O3 by microwave carbothermal reduction. In this study, Sb2O3 was used as the raw material, and the resonant cavity perturbation method was used to select anthracite as the reducing agent according to the microwave …
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Trivalent and Pentavalent Antimony
The dominant production methods include blast-furnace smelting, volatilization roasting, liquation, reduction, ... including those bearing arsenic and mercury. Liquation is typically used for the production of antimony(III) sulfide, whereas reduction, precipitation, and leaching/electrowinning are more indicated for high-grade ...
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Cleaning of high antimony smelting slag from an oxygen …
AbstractCleaning of high antimony smelting slag from an oxygen-enriched bottom-blown was tested by direct reduction in a laboratory-scale electric furnace. The effects of added CaO, mass ratio of coal (experimental) to coal (theoretical) (ω) and the slag type on the reduction procedure were considered. The contents of Sb and Au were …
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Flow diagram of volatilization smelting of stibnite in blast furnace …
Antimony is classified as a critical/strategic metal. Its primary production is predominated by China via pyrometallurgical routes such as volatilization roasting—reduction smelting or direct ...
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CN105333733A
The invention discloses a vertical reduction furnace for high-purity antimony production. The vertical reduction furnace comprises a feed pipe, a feed port, a reduction pipe and a gas-liquid separation discharge port, wherein the feed pipe, the feed port, the reduction pipe and the gas-liquid separation discharge port are sequentially and vertically …
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The mechanism study and low-carbon analysis of biomass …
The reduction smelting technology most commonly utilizes the antimony oxide powder reduction in a reverberatory furnace. Here, antimony oxide powder, reduced coal, and solvent are proportionally mixed in the batching system, then heated in the reverberatory furnace and reduced at temperatures ranging from 1273 to 1473 K to …
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Fire Refining of Rough Antimony from Impurities for
A subsequent increase in temperature to 1000°C leads to a partial reduction of the oxide part of the fired product, providing a decrease in the accumulated mass by 18% at the end of heating. ... A method for fire refining of rough antimony in an induction furnace was also developed. Here, the extraction of antimony into refined product ...
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WASTE CHARACTERIZATION REPORT U.S. ANTIMONY …
• Reduction Furnace Baghouse Filters (RIN 5) • Reduction Furnace Slag (Sb < 5%) (RIN 3) • Reduction Furnace Slag (5% < Sb < 10%) (RIN 3) The following is a list of QA/QC samples collected at the U.S. Antimony Corporation facility: • MS/MSD • Field Duplicate • Equipment Blank • Temperature Blank 1.C Sample Collection
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Oxygen-enriched molten pool antimony refining production …
(4) reduction melting：The high antimony lead slag of liquid in step (3) enters oxygen-enriched reduction furnace by slag chute stream, and to carry out reduction molten Refining, the volumetric concentration of the oxygen-enriched air in wherein oxygen-enriched reduction furnace are 88～92%, the pressure in oxygen-enriched reduction …
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Preparation of Antimony Metal by Carbothermal …
antimony metallurgical enterprises to achieve energy savings and cost reductions. To conduct a more in-depth study of microwave carbothermal reduction, the relationship between the parameters of carbothermal reduction and the reduction yield of antimony ingots under a microwave field was established using the response surface method …
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The Recovery of Pb and Zn in Antimony Smelting Slag
The antimony ore mainly occurs as jamesonite (4PbS·FeS·3Sb 2 S 3). The process of sinter + blast furnace reduction—reverberatory refining—is utilized for metal antimony smelting. With regard to such process, amounts of smelting slag are produced during blast furnace reduction.
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Antimony: Element 51
- Antimony is not abundant, making up only about 0.2 to 0.5 parts per million of the Earth's crust. - It is commonly found in ores like stibnite and valentinite. - Methods for isolating antimony often involve the reduction of antimony ores in furnaces. Uses and Applications Industrial Uses
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Antimony (Sb)
Reduction: The antimony oxide is then reduced to metallic antimony by heating it with carbon or by reacting it with iron scrap in a blast furnace. Refining: The crude antimony is further refined to remove impurities. This is typically done through electrolytic refining or by treating the antimony with oxygen-rich air to remove remaining sulfur ...
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Analysis of Antimony Sulfide Oxidation Mechanism in …
Antimony is considered an important metal, and various antimony compounds are widely used in electronics, flame retardants, chemicals, alloys, and semiconductor materials. 1 Antimony exists mainly in the form of antimony sulfide, which is usually smelted by volatilization in the blast furnace. However, the process has some …
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Antimony Recovery from End-of-Life Products and Industrial …
The reduction of Sb 2 O 3 to antimony metal is done with charcoal in a reverberatory furnace (1200 °C), with the formation of a slag. The loss of antimony by volatilization is high (12–20 %), meaning that the flue dusts must also be caught and then reprocessed in a blast furnace. ... Luo et al. studied the recovery of gold and antimony …
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Antimony and arsenic substance flow analysis in antimony
Substance flow analysis was applied to an antimony pyrometallurgical system. By taking antimony and arsenic as the objective elements, the mass balance and substance flow charts based on the production system were established, and evaluating indicators such as the direct recovery rate, waste recovery rate, and resource efficiency …
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A New Pyrometallurgical Process for Producing Antimony …
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 …
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Kinetic studies for sulfur-fixing and roasting reduction of …
The author used calcium oxide as a sulfur-fixing agent to fix sulfur in the form of calcium sulfide in the slag, eliminating emissions of SO 2, and then used carbon as a …
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Antimony Smelting
C. Reduction furnaces, for the reducing of the xide or tetroxide, or for the direct smelting of crude or rich ore, to regulus. Fig. 7 shows a type of reduction furnace used by most of the small smelters.
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Progressive low-temperature volatilization control: Efficient
The separation experiments of arsenic and antimony from flue dust were conducted in the tubular furnace. Initially, 20.00 g of flue dust was accurately weighed and placed into a porcelain boat. ... Sb 2 O 3 formed due to the reduction of Sb 2 O 5 has a volatilization temperature proximate to that of As 2 O 3 ... Recovery of antimony from ...
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Reduction mechanism and optimization of prepare metallic antimony …
In this work, a clean microwave carbothermal reduction of Sb 2 O 3 mineral to prepare metallic antimony ingot is proposed. Response surface methodology was used to optimize condition for microwave carbothermal reduction of Sb 2 O 3.The roasting temperature, roasting duration, carbon powder ratio and NaCl addition ratio was …
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Separating lead–antimony alloy by fractional crystallization …
After the mixture's calcine sintering and reduction smelting in blast furnace, lead–antimony alloy containing about 40% by weight antimony is obtained as the initial product. Then the alloy is converted in reverberatory furnace in order to separate antimony from the alloy by blowing smelting, in which crude lead bullion containing about 20 ...
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Development of Secondary Antimony Oxides from Metallurgical …
Furnace is heated to the desired temperature with a heating rate of 300 °C/h. After the desired temperature is reached, the melt is held for 60 min before the muffle is taken out of the furnace. ... Table 2 Composition of antimony dross used for reduction trials (XRF analysis) Full size table. Reduction trials are carried out at 700, 800, and ...
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Recovery of Antimony: A Laboratory Study on the Thermal
Antimony is typically classified as a volatile heavy metal, and low-grade ores are commonly produced by pyrometallurgical methods . Industrially, reduction of antimony oxide to metallic antimony is achieved by heating and the addition of carbon in a reverberatory furnace.
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Direct production of antimony by reduction and sulfur-fixing …
Blast furnace volatilizing (smelting) and reverberatory furnace process is the main reduction method in the current antimony smelting process, and it is associated with …
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A kind of antimony reduction furnace
The invention discloses a kind of antimony reduction furnace, including quartz ampoule, resistance furnace and reduction furnace furnace shell, resistance furnace is placed in reduction furnace furnace shell, quartz ampoule is horizontally through the axis of reduction furnace furnace shell, and be positioned in resistance furnace, quartz …
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Improved Smelting and Refining Processes for Production of Antimony …
The reverberatory furnace for reduction of antimony oxide was also enlarged: refining at lower temperatures and continuous mechanical casting into ingots gave a high-grade regulus. To enlarge the range of antimony products successful testwork was carried out on a technique characterized by fuel-free, self-oxidation volatilization capable of ...
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Investigation into Oxygen-Enriched Bottom-Blown …
xide in a blast furnace, and carbon-based reduction of the xide to metallic antimony in a reverberatory furnace. In these processes, however, antimony smelting at a high temperature will cause (1) serious environ-mental pollution during roasting and smelting because abundant antimony sulfide and some relevant volatile
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The photo of furnace in the pilot plant.
Reportedly, volatilization smelting in BFs and reduction smelting of the produced ATO in reverberatory furnaces have been the pyrometallurgical route for the production of >90% of total antimony ...
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Direct production of antimony by reduction and sulfur-fixing …
Abstract. Blast furnace volatilizing (smelting) and reverberatory furnace process is the main reduction method in the current antimony smelting process, and it is …
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