Fluorine-Free Electro-Refining of Crude Lead with High-Content Antimony
The corrosion rates of lead and lead antimony alloys in H2SO4, H2SO4+(NH4)2SO4 solution, H2SO4-HNO3 mixed acid, HCl, H3PO4 and H3PO4-H2SO4 mixed acid, have been studied.
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Fluorine-Free Electro-Refining of Crude Lead with High-Content Antimony
Conventional crude lead electro-refining based on fluosilicic acid (H2SiF6) system is suffering unwelcome environment burden due to the high volatility and instability of H2SiF6. Recycling secondary lead (Pb) resource resulted in high …
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Separating lead–antimony alloy by fractional crystallization …
In the end, the pure lead and antimony are finally obtained respectively with the electrolytic refining of crude lead and the antimony xide's reduction smelting in reverberatory furnace [3]. ... which means high energy consumption. The low-purity lead bullion contains only 75–80% by weight lead, leading to the poor efficiency of ...
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Alternative Fluxes for Lead Bullion Refining | SpringerLink
The Harris process for lead softeningLead softening uses sodium hydroxide and sodium nitrate to remove arsenicArsenic, tinTin, and antimony from molten leadLead by oxidation. It is known to be better than oxygen softening; however, the …
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Phase Transformation of Arsenic, Antimony and Lead in High …
The duration of the high-grade matte converting process is short, the amount of slag is small, and it is difficult for the original impurity removal operation in the low-grade matte converting process to meet the current production demand. Because the removal method for impurity elements during high-grade matte converting is unclear, the phase transformation of …
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A Review on Pyrometallurgical Extraction of Antimony from …
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 reduction smelting. The performance of most of the pyro-processes is very sensitive to concentrate type and grade. Therefore, technology selection for a greenfield plant …
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(PDF) Removal of lead from crude antimony by using NaPO3 as lead
The two major ores of antimony, stibnite and jamesonite, are found with lead ores in nature [17], resulting in high concentrations of lead (0.1-5%) in crude antimony, very far from the commercial ...
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Alternative Fluxes for Lead Bullion Refining | SpringerLink
In secondary lead production, the alloying elements (in recycled acid/lead batteries) are removed by refining processes. The presence of arsenic, tin, and antimony …
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Removing antimony from waste lead storage batteries alloy …
Generally, removal of antimony from high-antimony lead bullion was treated in reference to the refining process of crude lead with lower antimony content. At present, lead …
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Fire Refining of Rough Antimony from Impurities for Obtaining High
After 4 times' lifting, crude lead bullion (larger than 83% by weight) whose lead content is close to the eutectic point of lead-antimony binary system is gained in the bottom and the antimony ...
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Lead Refining
Since, tin and antimony oxides have high free energies of formation, oxygen sparging in refining kettles is used to remove tin and antimony down to a range of <0.0005%. The reduction of …
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(PDF) The Refining of Secondary Lead for use in Advanced Lead …
The reduction of antimony by oxygen is commonly used to soften lead. However, lead is also oxidized in this process. Therefore, the minimum antimony content available is related to acceptable lead loss. High antimony alloys can also be produced by oxygen sparging which removes the lead from solution as an oxide.
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Separating lead–antimony alloy by fractional crystallization …
The Lead (Pb) - Antimony (Sb) alloy derived from Jamesonite (Pb 4 FeSb 6 S 14) using the "Roasting - Reduction Smelting" method is typically isolated through a separation method known as "High Temperature Ash Blowing - Low Temperature Ash Blowing - Electrolytic Refining".However, the "Low Temperature Ash Blowing" separation method encounters …
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Efficient removal and recovery of lead from high arsenic …
The effect of leaching parameters on Pb removal from high arsenic antimony oxide powder is studied for the HNO 3 concentration, temperature, liquid-to-solid ratio, and leaching time. The removal mechanism is studied in this work. ... Separation of lead from crude antimony by …
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Fire Refining of Rough Antimony from Impurities for Obtaining High
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 …
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Phase Transformation of Arsenic, Antimony and …
Sb 2 O 5 (l) + 3CaO (l) = Ca 3 (SbO 4) 2 (l) ΔG θ = −277.27−0.1407T. (11) The phase transformation mechanism of the high-grade copper matte for converting Pb is shown in Figure 11. Comprehensive …
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Separation behavior of arsenic and lead from antimony …
DOI: 10.1016/j.jmrt.2020.02.063 Corpus ID: 213994353; Separation behavior of arsenic and lead from antimony during vacuum distillation and zone refining @article{Zhang2020SeparationBO, title={Separation behavior of arsenic and lead from antimony during vacuum distillation and zone refining}, author={Xiaoxin Zhang and Semiramis Friedrich and Bernd Friedrich}, …
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antimony refining from lead
An improved process for refining lead bullion containing antimony, in which the bullion is initially heated in a refining vessel to about 25° F. (14° C.) above the bullion melting point, and is thereafter . ... and is thereafter . gold washing plant with antimony mine high recovery. May 17, 2018· high recovery antimony refining machine ...
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Recovery of Antimony xide Flame Retardants from Lead Refining
Lead refining dross containing plenty of tin and other heavy metals, such as lead and antimony, is considered a hazardous waste generated in large quantities in lead smelter plants.
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Lead Refining
Some processes in lead refining such as removing copper from lead by a drop in solubility with decreasing temperature and the oxidation of antimony, ... the minimum antimony content available is related to acceptable lead loss. High antimony alloys can also be produced by oxygen sparging which removes the lead from solution as an oxide.
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High-arsenic antimony refining process
During refining, alkali, lead and sulfur are added to antimony melt so that arsenic and other impurities produce reaction to form a kind of floated sludge to be eliminated. The refining process of the present invention has low alkali consumption, high arsenic eliminating rate, high antimony yield, and low environmental pollution.
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(PDF) Recovery of Pure Lead-Tin Alloy from Recycling Spent Lead …
As mentioned, the tin comes from battery grids and components. When conducting the classic lead refining method, the tin passes first into the dross and then into the slag. In the lead refining process, such as Harris refining, which consists mainly of oxidation, elements such as tin, antimony, and arsenic are removed from the lead [23].
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CN1127793A
The fire process for refining Sb while effectively removing Pb features that after atomized by nitrogen, liquid lead remover containing oxacid of phosphorus and sulfuric acid is directly sprayed into molten Sb. Its advantages are high refining speed, lead-removing effect and direct yield.
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Electrolytic method of high-antimony lead
The invention relates to an electrolytic method of high-antimony lead, belonging to the field of pyrogenic-process and wet-process combined metallurgical technology. The method comprises the following steps: performing dosing and copper removal on the high-antimony lead produced by blast smelting in an anode pot, casting into an anode plate, and controlling the content of …
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A novel process for directional impurity removal and …
The crude antimony used in this study was provided by a smelter in Hunan, China (Fig. 1 (a)).The X-ray diffraction (XRD) of crude antimony show that the primary phase is antimony (Fig. 1 (b)).Inductively coupled plasma mass spectrometry (ICP-MS) was used to detect the contents of Ag, S, Si, Sn, Pb, and Bi, and inductively coupled plasma-optical …
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Removal of impurities from crude lead with high impurities …
Crude lead produced by the traditional pyrometallurgy processes usually needs to refine that can be extensively used in lead-acid battery industry, industrial chemicals, anticorrosive materials in the field of metallurgical devices, protective materials in the area of the devices of atomic industry and X-ray instrument, etc. Fire refining process and electrolytic …
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Recovery of Pure Lead-Tin Alloy from Recycling Spent Lead …
Research has already been conducted on the use of aluminium to remove antimony and copper from lead from scrap lead–acid batteries in terms of lead pre-refining. …
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US3479179A
Kettle refining of lead - by air blowing and alkali addn. for antimony removal EP2459761A4 (en) * : : Stannum Group LLC: Process for refining lead bullion WO2020157165A1 (en) : : Metallo Belgium: Improved method for producing high purity lead
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Fire Refining of Rough Antimony from Impurities for …
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 …
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Separation behavior of arsenic and lead from antimony …
Sb - 0.1 wt.% Al and Sb - 0.1 wt.% Zn bars preparation and zone refining process. Download: Download high-res image (89KB) Download: Download full-size image; ... but has …
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