MENU
Antimony and bismuth are selectively removed from an electrolyte solution, especially a solution used for the electrolytic refining of copper by adding to the electrolyte solution a carbonate of barium, strontium, or lead. US4157946A - Process for selective removal of bismuth and antimony from an electrolyte, especially in electrolytic refining ...
WhatsApp: +86 18221755073
Refining and fine purification techniques are used for production of pure antimony metal. There is growing demand for extremely pure antimony. Antimony oxide …
WhatsApp: +86 18221755073
In the electrolytic refining of copper, the anode mud contains antimony, selenium, tellurium, silver gold and platinum. These are impurities in blister copper. They are less reactive and unaffected by C u S O 4 − H 2 S O 4 solution and hence, settle down under anode as anode mud.
WhatsApp: +86 18221755073
Three types of antimony and bismuth electrolytic cells to be used for lead electrorefining were developed and tested. ... These leads to the disturbances of the electrolytic refining process ...
WhatsApp: +86 18221755073
It was shown earlier [6] that electrolytic refining of rough lead containing 2.0 wt % antimony produced cathodic lead of C1 brand according to the GOST (State Standard) 3778-98, while the antimony ...
WhatsApp: +86 18221755073
Arsenic, antimony, bismuth and other elements with potentials similar to that of copper are harmful impurities in the copper electrolytic refining process and may precipitate in the cathode discharge when the concentration of Cu 2+ in the electrolyte is low or when the current density is high, thereby reducing the copper cathode purity [5], [6 ...
WhatsApp: +86 18221755073
Antimony bullion of several compositons was electrolytically refined in electrolyte composed of antimony trifluoride and sulfuric acid at current densities up to 20 amp./ft. 2 (2.2 …
WhatsApp: +86 18221755073
When electric current is passed through the electrolyte, the anode gradually dissolves and pure copper is deposited on the cathode which gradually grows in size. Impurities like. Fe, Zn, Ni etc, dissolve in the solution as sulphates while gold, silver, platinum settle down below the anode as anode mud.
WhatsApp: +86 18221755073
In this work, we explored the tech-economic viability of electro-refining for the antimony-rich crude lead (4.09% Sb), using fluorine-free and green MSA as the solvent. The influencing mechanism of MSA concentration, additive content, Pb ion concentration, cathodic current density, solution temperature on morphology control and …
WhatsApp: +86 18221755073
Keywords: Antimony; Bismuth; Electrolytic cell; Electrolytic refining; Lead . 1. INTRODUCTION . Battery scraps and other materials that contain a significant amount of lead oxides and sulfates may be recycled in gas-supplied furnaces under a reducing atmosphere at temperatures above 900ºС (Bredikhin et al., 2005).
WhatsApp: +86 18221755073
In the present study, direct electrowinning is adopted for the recovery of antimony and bismuth from a quaternary chloride electrolyte that depicts the spent …
WhatsApp: +86 18221755073
This work explores the feasibility of recovering antimony, present in a side stream of hydrochloric acid resulting from a copper electro-refining process, by …
WhatsApp: +86 18221755073
Correct option is D. Gold In the electrolytic refining of copper, the anode mud contains antimony, selenium, tellurium, silver, gold and platinum.
WhatsApp: +86 18221755073
The refining aspect has remained based on kettle refining, or to a lesser extent, the Betts electrolytic refining. In the mid-1990s, Asarco investigated a concept based on granulating the lead bullion from the blast furnace. The granular material was fed into the Engitec Fluobor process. This work resulted in the operation of a 45 kg/d
WhatsApp: +86 18221755073
Electrolytic refining is a process used for the extraction and purification of metals. Learn about electrolytic refining definition, its principles and electrolytic refining of metals, copper and minerals. ... (Ag), Gold (Au), Platinum group metals, Lead (Pb), Antimony, (Sb)Bismuth,(Bi)Arsenic (As), Tellurium (Te), Selenium (Se). 5.0 ...
WhatsApp: +86 18221755073
Copper electro-refining (Cu-ER) is the principal method for producing >70% of high or 99.97% pure copper cathodes from 97-99% pure blister/fire refined-scrap copper anodes. While the inert and most of less soluble impurities settle as anode slime/sludge, other soluble impurities, particularly the metalloids (group VA/15 elements or Q: As, Sb and …
WhatsApp: +86 18221755073
Arsenic, antimony, bismuth and other elements with potentials similar to that of copper are harmful impurities in the copper electrolytic refining process and may precipitate in the cathode discharge when the concentration of Cu 2+ in the electrolyte is low or when the current density is high, thereby reducing the copper cathode purity [5], [6].
WhatsApp: +86 18221755073
Electro-refining. Usually the object of electrolytic refining is to separate one metal in pure form from an alloy containing a high percentage of the desired metal, copper for instance, and a number of …
WhatsApp: +86 18221755073
In this context, the search for secondary antimony extraction methods is of major interest. Potential candidate secondary sources of antimony include the by-products of pyrometallurgical copper extraction and refining. The final stage of the copper process involves electrolytic refining from 99.7%-pure copper anodes.
WhatsApp: +86 18221755073
The behaviour of arsenic, antimony, and bismuth during electrolytic refining of copper has been investigated using cyclic voltammetry, scanning electron microscopy, X-ray diffraction analysis and ...
WhatsApp: +86 18221755073
Antimony Selenium Tellurium Silver Gold Platinum ELECTROLYTIC REFINING The process of electrolytic refining is used to purify impure metals. In this process, the impure metal is made anode and a thin strip of pure metal is made cathode. A solution of the salt of the metal, which is to be refined is used as an electrolyte. On passing the current
WhatsApp: +86 18221755073
The low-purity lead bullion contains only 75–80% by weight lead, leading to the poor efficiency of electrolytic refining. In this procedure, antimony is oxidized to Sb 2 O 3 and then reduced to Sb. The direct recovery ratio of lead and antimony is unsatisfactory due to the long process by conventional industrial pyrometallurgy process shown ...
WhatsApp: +86 18221755073
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 …
WhatsApp: +86 18221755073
Electrolytic refining of antimony is mostly realized by electrolysis of solution, where hydrofluoric acid and sulfuric acid solutions are used as electrolyte to generate …
WhatsApp: +86 18221755073
Electrolytic refining is a much more common process than electro-winning, and such plants exist on a scale ranging from 1000 to 100,000 tons per year throughout the world. These are typically part of a larger project to extract raw metals from both waste and main ores and retrieve them.
WhatsApp: +86 18221755073
With the obtained As-containing refined Cu used in electrolytic refining, the formation of floating slime could be decreased and consequently the quality of the cathode Cu would be increased. ... In this case, it was possible to obtain sequentially antimony oxychloride (Sb 4 O 5 Cl 2, purity> 93%) and bismuth oxychloride (BiOCl, purity> 95% ...
WhatsApp: +86 18221755073
O.V.J. Hyvarinen, Process for selective removal of bismuth and antimony froman electrolyte, especially in electrolytic refining of copper, US Patent 4,157,946 (1979). Google Scholar [9]
WhatsApp: +86 18221755073
Results of electrolysis of antimony (99.56% Sb) in a sulfate-fluoride electrolyte are provided. Electrolysis parameters and distribution of 20 associated …
WhatsApp: +86 18221755073
Antimony is a semi-metallic element used in various applications, but its production is usually done by heat smelting. MIT researchers accidentally found a new way to produce antimony metal using electrolysis, which could be more efficient and environmentally friendly.
WhatsApp: +86 18221755073
The electrolytic copper purification is extremely complex. Several parameters have to be controlled and regulated at once: electrolyte temperature, circulation rate, current, voltage [9,10,11]. The task of management of copper electrolytic refining process is to increase its efficiency by controlling and regulating the parameters.
WhatsApp: +86 18221755073Copyright © 2024 Sofol Industry & Technology Group Co., Ltd.
المنتجات
محلول
حول الولايات المتحدة
اتصل بنا