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Hydrometallurgical extraction of antimony from lead

Request PDF Hydrometallurgical extraction of antimony from lead refining slags Today, in order to optimize the production of copper, zinc, and lead, as well as to reduce the circulation of

Refining process for removing antimony from lead

In general, improvements are made by the present process over the known alkali metal process by removing antimony from lead or lead alloys in which sodium is added, as the refining reagent, to the molten antimony-containing lead bullion at a much lower temperature to form a

Lead and tin removal from antimony metal by refining

2017-11-1  influencing the degree of antimony refining for lead and tin removal is the composition of the refining mixture, namely the ratio of sodium dihydrogen phosphate to the mass of phosphoric acid. With the increase of this ratio, the degree of antimony purification from lead and tin increased. If the ratio of sodium dihydrogen

Recovery of Antimony Trioxide Flame Retardants from

2016-3-11  mony-rich drosses from industrial lead refining usually contain ~30wt% of antimony and ~60wt% of lead in oxide form. These residues have been reduced to hard lead alloys in the past, which were used in lead-acid-battery grids. As the antimony contents in the grids were reduced from ~12wt% to less than 2wt% in the past, application of antimony in lead-antimony alloys is of small importance [1].

Lead processing Refining Britannica

Calcium-lead alloys can also be made from recycled lead. Antimony is removed by oxygen injection, and, after copper and other impurities are removed, the molten lead is cast into blocks, or “pigs,” weighing 50 kilograms (110 pounds) or more.

Separating lead–antimony alloy by fractional

2015-7-5  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 can be used for further refining process without converting into Sb 2 O 3. The separating efficiency of lead in the bottom has reached the theoretical level of fractional crystallization for lead–antimony alloy

Separation behavior of arsenic and lead from antimony

2020-2-27  behavior of arsenic and lead from antimony during vacuum distillation and zone refining Xiaoxin Zhang1, Semiramis Friedrich∗,1, Bernd Friedrich IME Process Metallurgy and Metal Recycling, RWTH Aachen University, 52056 Aachen, Germany a r t i c l e i n f o Article history: Received 28 November 2019 Accepted 17 February 2020 Available online xxx Keywords: Vacuum

Separation behavior of arsenic and lead from

2020-5-1  When classifying impurities in commercial pure antimony (Sb, 99.8%), arsenic (As) and lead (Pb) should be brought to the forefront consideration. Due to the known difficulty of As removal through zone refining, it is meaningful to investigate its separation tendency through alternative methodologies such as vacuum distillation, promoted by the large difference of their vapor pressures.

Lead processing The metal and its alloys Britannica

2021-5-12  The most common and important metal alloyed with lead is antimony. Antimonial lead alloys usually contain from 1 to 6 percent antimony, but they may contain as much as 25 percent. Other components usually include tin, iron, copper, zinc,

US2335569A Process for removing antimony from

Example 1 This example illustrates the softening of antimonial lead 'by first producing a lead-antimony slag of relatively low antimony content which is vthen built up to a high antimony content by stirring thel slag into a second bath of fresh metal. 400 lbs. of litharge was added to '7,860 lbs. of.

Separation of Lead from Crude Antimony by Pyro

2016-4-18  The main purpose of this study was to separate lead from crude antimony through an oxidation pyro-refining process and by using sodium metaphosphate as a lead elimination reagent. The process parameters that will affect the refining results were optimized experimentally under controlled conditions, such as the sodium metaphosphate charging dosage, the refining temperature and

The method of refining of antimony lead-antimonic

The invention relates to ferrous metallurgy and can be used in the processing of battery scrap and secondary lead alloys. There is a method of refining lead-antimonic alloy of antimony by separating the iron powder in the melt in an atmosphere of inert gas (see ed. mon. The USSR 889727 "Method of refining lead from impurities". Publ. 15.12.81.

Electrolytic Refining of Lead in Molten Chloride

2017-7-31  Three types of antimony and bismuth electrolytic cells to be used for lead electrorefining were developed and tested. The electrolytic cell with the bipolar metallic electrode, the electrolytic cell with two anodes and one cathode, and the electrolytic cell with the porous diaphragm were studied. The tests demonstrated that lead is effectively separated from the metallic impurities in all

Recovery of Antimony Trioxide Flame Retardants from

2016-3-11  Recovery of Antimony Trioxide Flame Retardants from Lead Refining Residues by Slag Conditioning and Fuming Florian Binz*, and Bernd Friedrich DOI: 10.1002/cite.201500071 Bottom-up process design is performed for a new antimony white fuming approach from antimony-rich lead refining

Recovery of Antimony Trioxide Flame Retardants from

2015-9-16  Bottom‐up process design is performed for a new antimony white fuming approach from antimony‐rich lead refining residues. Thermochemical modelling is used to evaluate process boundaries regarding temperature and slag composition allowing the fuming of qualified antimony white from mentioned residues.

Refining of lead from lead battery recycling STC Italy

2021-5-8  The pyrometallurgical Lead refining process is one of the most important procedures of lead battery recycling. This process is also known as “Softening of Lead” because the metal is softened after the removal of some impurities which are present in the raw lead coming from lead battery recycling.It would be more correct to call only the process of antimony, arsenic and tin removing

Removing antimony from waste lead storage batteries

2018-4-5  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 produced by the pyrometallurgical refining process accounts for about 70% of the refined lead in the world and only some of countries, such as Canada, Peru, Japan and China

Antimony Umicore

Antimony can be recovered in the residues from the lead refining process. The main end-of-life recycling option is from spent lead-acid batteries mainly recovered from old vehicles. Related Business Unit. Precious Metals Refining; Discover more. Arsenic. Bismuth.

Lead and Zinc Smelting IFC

mony, arsenic, tin, and copper). The lead is re-fined in a cast-iron kettle in five stages. First, antimony, tin, and arsenic are removed. Next, gold and silver are removed by adding zinc. The lead is then refined by vacuum removal of zinc. Refining continues with the addition of

Refining & Alloying The Doe Run Company

2021-4-12  Lead Metal Refining and Alloys. For more than 150 years, we have provided premium, high-quality lead metal and lead alloys. Since 1991, our secondary smelter has met our customers’ needs with high-purity secondary lead and numerous custom lead alloys. Our recycled lead and lead metal alloys provide U.S. manufacturers with the metal they need

Separation of Lead from Crude Antimony by Pyro

The main purpose of this study was to separate lead from crude antimony through an oxidation pyro-refining process and by using sodium metaphosphate as a lead elimination reagent. The process parameters that will affect the refining results were optimized experimentally under controlled conditions, such as the sodium metaphosphate charging dosage, the refining temperature and duration, and the

Electrolytic Refining of Lead in Molten Chloride

2017-7-31  Three types of antimony and bismuth electrolytic cells to be used for lead electrorefining were developed and tested. The electrolytic cell with the bipolar metallic electrode, the electrolytic cell with two anodes and one cathode, and the electrolytic cell with the porous diaphragm were studied. The tests demonstrated that lead is effectively separated from the metallic impurities in all

Recovery of Antimony Trioxide Flame Retardants from

2015-9-16  Bottom‐up process design is performed for a new antimony white fuming approach from antimony‐rich lead refining residues. Thermochemical modelling is used to evaluate process boundaries regarding temperature and slag composition allowing the fuming of qualified antimony white from mentioned residues.

Removing antimony from waste lead storage batteries

2018-4-5  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 produced by the pyrometallurgical refining process accounts for about 70% of the refined lead in the world and only some of countries, such as Canada, Peru, Japan and China

Antimony impurity in lead arsenate insecticide

Lead arsenate was a commonly used insecticide during the first half of the 20th century, particularly in deciduous tree fruit orchards. Antimony is cotransported with As during the ore refining process and could occur as an impurity in commercial lead arsenate products.

Separation behavior of arsenic and lead from

Abstract When classifying impurities in commercial pure antimony (Sb, 99.8%), arsenic (As) and lead (Pb) should be brought to the forefront consideration. Due to the known difficulty of As removal through zone refining, it is meaningful to investigate its separation tendency through alternative methodologies such as vacuum distillation, promoted by the large difference of their vapor pressures.

ELECTROLYTIC REFINING OF ANTIMONY BULLION I

Vol. 95, No. 3 REFINING OF ANTIMONY BULLION 147 circulation or agitation of the electrolyte. Bullion sample 1 (Table I) was used in these e.xperiments and was cast into anodes in a vertical carbon mold. Fresh electrolyte containing 84 g./1. antimony as antimony tri- fluoride and 530 g./1.

Lead processing Refining Britannica

Lead processing Lead processing Refining: To remove and recover remaining impurities from lead bullion, either pyrometallurgical or electrolytic refining is used; the choice between the two methods is dictated by the amount of bismuth that must be eliminated from the bullion and by the availability and cost of energy. The Parkes zinc-desilvering process is the most widely used

Lead Harris/Parkes Refining Dross Recovery-Lead-

Lead Harris/Parkes Refining Dross Recovery. Refining dross is the result of lead refining process where impurities like copper, tellurium, arsenic-antimony-tin, silver, zinc and bismuth in sequence from lead bullion. Composition of each type of dross varies and is subjected to specific refining steps and raw material contents.

Secondary Lead Smelting Trainex

2012-2-10  REFINING KETTLES EMISSIONS LEAD SOFT SPECIALTY LEAD ANTIMONIAL LEAD ALLOYS REFINING REAGENTS SLAG DROSS OXIDE PAINT PURCHASED DROSSES & RESIDUES OLD SCRAP SMELTING FURNACES SLAG AND Antimony Lead Selenium Cadmium Osmium Arsenic Mercury 1613 1210 1054 904 849 721 660 627 318 214 41 32 14 CrO 2/CrO 3 Ni(OH) 2