The optimal result for simulated copper solution was 99.9% copper recovery efficiency in current density 0.585 A/dm2 and no iron ion. Due to high concentration of iron and chloride ions in real ...
The increased use of heavy metals in process industries often results in the generation of large quantities of wastewater (WW) and aqueous waste (AW) containing mixtures of heavy metals such as copper and nickel. This research focuses on the electrochemical recovery of copper and nickel from acid pickling solutions used to treat …
Semantic Scholar extracted view of "An electrolytic process for recovery of zinc dust from melting furnace slag" by K. D. Sharma et al. ... A pyrometallurgical reduction process for the recovery of copper and zinc from brass secondary slag (BSS) was studied. Specifically, the effect of reduction temperature and time on the conversion to ...
The recovery and purification of copper from a scrap brass plate obtained from a scrap-metal deposit was discussed. In the electrolytic recovery process, a pure copper foil acted as the cathode ...
The attempt at electrolytic recovery of zinc from the zinc ash-domestic sewage mixture using copper electrodes failed to yield metallic zinc after 1.5h of electrolysis time but reduced the total pollution load of the mixture. ... 1999 used both acidic and alkaline solutions for the recovery of zinc, copper and lead from brass melting slag with ...
The reclamation of metals from scrap is becoming increasingly important in the metallurgical industry. Copper, because it does not corrode readily and is electronegative to most common metals, is peculiarly adapted to reclamation.
A research study has been undertaken to develop the fundamentals of a method for the direct recovery of copper from brass (Cu–30 wt.% Zn) scrap based on …
A brass recycling circuit is subjected to electrolytic copper refining in sulfuric acid to form copper cathode material. The brass recycling circuit is further subjected to solid-liquid separation (s1), cementation by sodium hydroxide and zinc addition, solid-liquid separation (s2), electrolytic zinc recovery from electrolyte, precipitation with lime and/or sodium …
Several methods have been investigated, with some success, for treating scrap brass to recover copper and zinc, either as pure metals or as salts of the metals. ... Hames, Frederick A., "The Electrolytic Recovery of Copper and Zinc from Scrap Brass with Special Reference to Lead-Bearing Brass." (1940). Bachelors Theses and Reports, …
In this study, we investigate the effect of low-temperature leaching modes to leach copper and silver from secondary copper electrolytic refining slime with sulfuric acid solution.Promising fields for intensification of the leaching process of secondary copper electrolytic refining slime, namely preliminary oxidizing roasting and microwave …
Large amounts of solid wastes are produced in copper and aluminum smelting processes, which not only cause losses of valuable resources but also threaten the ecology and environment. In this study, a reduction–sulfurization smelting method was used for recovering Cu and Co from converter slags by using spent pot lining (SPL) as the …
Anaconda electrolytic zinc was used for alloying with the copper to make brass. The fusions were made in graphite crucibles and the brass was cast in carbon molds. Solutions of sulfuric acid were made by diluting concen- trated C.P. sulfuric acid with distilled w~ter.
copper brass recovery electrolyte scrap Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US211392A Inventor Allen C Jephson
Electrolytic recovery of copper from copper-zinc sulfate solutions obtained by hydrometallurgical treatment of brass ashes and flue dusts has been studied by Duman et al. (1989). It was revealed that Zn 2+ ions cause grain size reductions of the cathodic copper in relatively high copper electrolytes.
A new process for recycling zinc and copper from the smelting slag of waste brass was investigated in this study. The zinc and copper present in the smelting slag were dissolved in a ZnCl 2 –NH 4 Cl solution system. To recycle copper, the lixivium was purified by a novel method termed as electrochemistry and chemistry synergetic (ECS) purification.
methods for the recovery of the metal of electrolytic grade. In this furnace treatment, the zinc will oxidize and be lost in the slag. However, this can be done only by large copper …
ELECTROLYTIC RECOVERY OF COPPER AND ZINC FROM BRASS. INTRODUCTION. The reclamation of metals from scrap is becoming increasingly important in the …
This experiment offers an opportunity for students to simulate in the laboratory an electrochemical process with the aim of obtaining pure copper from scrap …
Digital Commons @ Montana Tech
Electroplating copper industry was discharged huge amount wastewater and cause serious environmental and health damage in Taiwan. This research applied electrical copper recovery system to recover copper metal. In this work, electrotreatment of a industrial copper wastewater ([Cu] = 30000 mg L−1) was studied with titanium net …
Doubling efficiency. The new work doubles the efficiency for electrolytic extraction of copper reported in the first paper, which was 28 percent with an electrolyte where only barium sulfide added to the copper sulfide, to 59 percent in the second paper with both lanthanum sulfide and barium sulfide added to the copper sulfide.
Heavy metals are elements having atomic weights between 63.5 and 200.6 g/mol and a specific gravity greater than 5.0 [1]. With the rapid development of industries such as metal plating facilities, mining operations, fertilizer industries, tanneries, batteries, paper industries, and pesticides, heavy metals wastewaters are directly or indirectly ...
Corpus ID: 137511494; Electrolytic Recovery of Copper and Zinc from Brass. @inproceedings{Loughran1938ElectrolyticRO, title={Electrolytic Recovery of Copper and Zinc from Brass.}, author={V. Kent Loughran}, year={1938} }
eleett"olyzed, and pure copper and pure zinc recover~d, the introduction of undesirable constituents in brass fOu16 be eliminated. l'~oreover, the value of: the;>ur& zinc and …
This paper is concerned with the production of electrolytic copper powder from brass scraps by electrorefining technique using both industrial and synthetic brass …
In this study, the effect of copper and silver low-temperature leaching from secondary copper electrolytic refining slime with the sulfuric acid solution was investigated. Herein, the relevance of copper and silver collective recovery from secondary copper electrolytic refining slime was verified at the initial stage of their …
The application of electrochemical methodology to the recovery and purification of metals is one of the most important industrial applications of electrical energy. This experiment offers an opportunity for students to simulate in the laboratory an electrochemical process with the aim of obtaining pure copper from scrap brass plate. …
Metal values of copper, zinc and lead have been successfully recovered from brass melting slag by applying hydrometallurgical treatments. The method utilizes hydrogen peroxide to enhance dissolution of these metals in acidic or alkaline leachants. Parameters affecting the recovery efficiency such as stoichiometric ratio, solid dross:leachant ...
eleett"olyzed, and pure copper and pure zinc recover~d, the introduction of undesirable constituents in brass fOu16 be eliminated. l'~oreover, the value of: the;>ur& zinc and pure copper would be greater than that of the scrap brass. THEDRY he anodic dissolution of an alloy is dependent on several factor,s. Chief among these are the miscibility
This research focuses on the electrochemical recovery of copper and nickel from acid pickling solu-tions used to treat metal surfaces. Using hull cells, beaker plating, and electrolytic cells in pilot scale (ca-pacity 30 L), the most important parameters influencing the process have been identified (temperature, contact time, and current density).
The recovery of zinc metal from zinc ash, with a zinc content of about 76% by leaching and electrowinning has been studied. The presence of chloride has been identified as the major problem area. A catalytic anode based on iridium dioxide (IrO 2 ) was used as the anode material to overcome this problem.
The results of the effect of agitation rate on zinc and copper dissolution by 30% H 2 SO 4 with leaching time 10 min and at 35°C investigated in the range of 60–400 rpm with liquid/solid mass ratio of 5/1 are shown in Fig. 1.The presented data show that the recovery of zinc was increased from 60% at 50 rpm to around 93% at 150 rpm and the …
2.2. Methods and analysis. As shown in Fig. 1, the EL–ED combination process was designed for treating copper-electroplating wastewater with different copper concentration.If high concentration copper wastewater (HCW), for instance, Cu 2+ concentration was >300 mg/L. The HCW was firstly fed into Tank-1, and then pumped …
The Electrolytic Recovery of Copper from Brass - Free download as PDF File (.pdf), Text File (.txt) or read online for free. This document describes an experiment simulating the industrial electrolytic recovery of copper from brass. Students conduct electrolysis using a brass anode and copper cathode in a copper sulfate/sulfuric acid solution.
