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Removal Of Copper From Bindura Synthetic Cobalt Electrolyte By Ion Exchange
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Book Synopsis Removal of Copper from Bindura Synthetic Cobalt Electrolyte by Ion Exchange by :
Download or read book Removal of Copper from Bindura Synthetic Cobalt Electrolyte by Ion Exchange written by and published by . This book was released on with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Hydrometallurgy division recently developed a suitable cobalt powder cementation method or recovering copper from cobalt electrolyte. TP207 is reasonably selective for copper over cobalt during loading and can be eluted selectively using 1 mol.dm-3 H2SO4.
Book Synopsis Impurity Removal by Fixed Bed Ion Exchange from Cobalt Electrolyte Derived from the Kakanda Tailings Dump by :
Download or read book Impurity Removal by Fixed Bed Ion Exchange from Cobalt Electrolyte Derived from the Kakanda Tailings Dump written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A process for the recovery of copper and cobalt from the Kakanda tailings dump was developed and evaluated during an integrated pilot plant campaign at Mintek. The process involved a number of unit operations including leaching, copper solvent extraction, copper electrowinning, iron removal, manganese solvent extraction, cobalt solvent extraction, ion exchange for impurity removal, and cobalt electrowinning. This paper describes the laboratory test programme required to enable the design of an ion exchange circuit for the removal of traces of copper and zinc from the cobalt advance electrolyte, as well as the pilot plant campaign to evaluate the final design.^L^LA resin was chosen for the removal of copper, and occasionally copper and zinc, from the cobalt advance electrolyte. During the pilot plant campaign a lead-lag fixed-bed system was evaluated at a superficial linear velocity of 0.5 cm/s (to be employed on the full-scale plant). The concentration of copper in the ion exchange feed varied between 60 and 100 mg/l and that of zinc between less than 2 and 10 mg/l. Effluent concentrations for both metals of less than 2 mg/l, specified for electrowinning, were consistently delivered for both metals. ^L^LThe full- scale design was based on an ion-exchange feed flowrate of 200 m3/h, and the final dimensions of the two columns were: inside diameter 3.7 m, and height 7.5 m. Variations of copper and zinc concentrations in the ion exchange feed solution were accommodated by changes in the operating strategy of the plant during piloting.
Book Synopsis Recovery of Cobalt from Spent Copper Leach Solution Using Continuous Ion Exchange by :
Download or read book Recovery of Cobalt from Spent Copper Leach Solution Using Continuous Ion Exchange written by and published by . This book was released on 1987 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recovery of Cobalt from Spent Copper Leach Solutions by : P. G. Bennett
Download or read book Recovery of Cobalt from Spent Copper Leach Solutions written by P. G. Bennett and published by . This book was released on 1988 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cobalt Recovery from Copper Leach Solutions by : Thomas H. Jeffers
Download or read book Cobalt Recovery from Copper Leach Solutions written by Thomas H. Jeffers and published by . This book was released on 1985 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ion Exchange Recovery of Cobalt and Copper from Blackbird Mine Drainage by : Keith Arlo Prisbrey
Download or read book Ion Exchange Recovery of Cobalt and Copper from Blackbird Mine Drainage written by Keith Arlo Prisbrey and published by . This book was released on 1980 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Removal of Copper and Cadmium Ions from Synthetic Industrial Wastewater Using Continuous Ion Exchange Column System by : Salem Omar Salem Bamatraf
Download or read book Removal of Copper and Cadmium Ions from Synthetic Industrial Wastewater Using Continuous Ion Exchange Column System written by Salem Omar Salem Bamatraf and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Solvent Extraction and Ion Exchange Removal of As, Sb and Bi from Copper Refining Electrolytes by :
Download or read book The Solvent Extraction and Ion Exchange Removal of As, Sb and Bi from Copper Refining Electrolytes written by and published by . This book was released on 1992 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: Study surveying the literature to determine what is known about the solvent extraction or ion exchange removal of arsenic, antimony and bismuth from acid electrolytes, supplemented by direct contact with reagent suppliers. Laboratory scale research was also performed on reagents identified as the most promising in the literature search, with each reagent evaluated for the potential extract of the three minerals.
Book Synopsis Recovery of Cobalt from Spent Copper Leach Solution Using Continuous Ion Exchange by : Thomas H. Jeffers
Download or read book Recovery of Cobalt from Spent Copper Leach Solution Using Continuous Ion Exchange written by Thomas H. Jeffers and published by . This book was released on 1987 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Copper Removal from Aqueous Systems Using Ion-Exchange Membrane by : Desmond Marks
Download or read book Copper Removal from Aqueous Systems Using Ion-Exchange Membrane written by Desmond Marks and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Removal of Iron by Ion Exchange from Copper Electrowinning Electrolyte Solutions Containing Antimony and Bismuth by :
Download or read book Removal of Iron by Ion Exchange from Copper Electrowinning Electrolyte Solutions Containing Antimony and Bismuth written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to increase the current efficiency in copper electrowinning tankhouses, iron can be removed from the electrolyte using ion exchange. While this is a proven technology, very little data is available for the application of this technology to copper electrowinning electrolytes containing antimony and bismuth. The feasibility of utilizing iron ion exchange for the removal of iron from copper electrowinning electrolytes containing antimony and bismuth was studied in the laboratory. Apicolylamine, a sulphonated diphosphonic, an aminophosphonic and three sulphonated monophosphonic resins were tested. The picolylamine resin was found to be completely impractical as it loaded high levels of copper. All the phosphonic resins tested loaded an appreciable amount of antimony, however, only the aminophosponic resin loaded an appreciable amount of bismuth. Tests to determine whether or not the sulphonated monophosphonic Purolite S957 resin would continue to load antimony with time and, hence, reduce the resin's ability to remove iron gave inconclusive results. In the event that the resin's ability to remove iron is hampered due to antimony loading, testing has shown that the resin performance may be restored via a regeneration with a solution containing sulphuric acid and sodium chloride. A case study for the application of this technology to the CVRD Inco CRED plant has shown that, while iron removal by ion exchange is technically feasible, it will upset the plant's acid balance in electrolyte. Therefore, an acid removal process would need to be implemented in tandem with an iron ion exchange system. Additionally, preliminary calculations suggest that a system with a single ion exchange column may have difficulty removing sufficient iron for the CRED design conditions. Therefore, consideration should be given to the possibility of utilizing a two column system (one column loading, one column stripping).
Book Synopsis The Extraction of Copper from Copper-nickel Catholyte by Cation Exchange by :
Download or read book The Extraction of Copper from Copper-nickel Catholyte by Cation Exchange written by and published by . This book was released on 1975 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work involved a laboratory study of the selectivity and capacity for copper of IMAC SYN 101 and Lewatit TP 207 resins. The sponsor had stated that the ion-exchange system could be incorporated into a closed process if the nickel content of the copper catholyte did not exceed 10 g/l and the additions of sulphuric acid and water did not exceed plant make-up rates. The average results obtained to date are 43 g of copper and 3 g of nickel per litre of resin. These were obtained under the following conditions: a total number of bed volumes of 8 to 12, a temperature of at least 50 degrees C and a flowrate of 8 to 12 bed volumes per hour. A mass balance based on a three-stage process is included for the whole copper-production circuit. The fixed-column separation entails three stages, ie, loading, scrubbing (removal of entrained feed solution and loaded nickel), and regeneration (replacement of the loaded copper and a minor quantity of nickel with the use of recycled electrolyte from the electrowinning tankhouse). Calculations showed that the circuit is very sensitive to the nickel carry-over into the copper circuit. The results for the resin loading covered a wide range (especially for nickel), and it seems likely that more laboratory work will be required if the project continues. IMAC GT 73, a cation-exchange resin, which was tested for the removal of impurities from nickel catholyte, was found to reduce the copper concentration from 0,25 ppm to less than 0,05 ppm (which is te detection limit). It was decided that a small resin column on-line with one of the cells should be installed at Bindura. Its effect in purifying the solution should be immediately apparent from the quality of the cathode.
Book Synopsis Removal of Antimony and Bismuth from Copper Electrorefining Electrolyte by Two Proprietary Solvent Extraction Extractants by : Andrew Artzer
Download or read book Removal of Antimony and Bismuth from Copper Electrorefining Electrolyte by Two Proprietary Solvent Extraction Extractants written by Andrew Artzer and published by . This book was released on 2019 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Antimony and bismuth are two of the most problematic impurities in copper electrorefining (ER). Because of this, much research has been done investigating the ways to remove them. Processes that are currently being used industrially include anode additions, liberators, ion exchange (IX), and solvent extraction (SX). Of these, liberators and anode additions are the most common while SX is the least, mostly being used for arsenic removal. There are other methods that have been evaluated, but are not in commercial use. These include the use of various electrolyte additives, and adsorbents such as bentonite clay and heavy metal sulfates. Two proprietary phosphonic acid ester extractants (REX-1 and REX-2) were examined for the removal of antimony and bismuth from copper ER electrolytes. Experimentation included shakeout and break tests to determine the basic parameters for the extractants in terms of maximum loading, break times, and extraction and stripping efficiency as well as a laboratory-scale test using a mini-pilot plant to examine effectiveness under commercial conditions. The shakeout tests found that REX-2 was able to extract Sb and Bi from the electrolyte, but required some mixture with REX-1 to better facilitate stripping with 400 g/L sulfuric acid. Phase break times revealed that glue in the ER electrolyte caused a statistically significant decrease in the disengagement times. In the mini-pilot plant, only REX-2 was used. Antimony and bismuth were both extracted effectively, and Bi was effectively stripped with 400 g/L sulfuric acid. Unfortunately, most of the extracted Sb remained in the organic phase. A conceptual flowchart to make a Bi product was created"--Abstract, page iv.
Book Synopsis Removal of Impurities from Electrolyte Solution to Produce Pure Metals by : Mirza M. Rashed Hossain
Download or read book Removal of Impurities from Electrolyte Solution to Produce Pure Metals written by Mirza M. Rashed Hossain and published by . This book was released on 2010 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Copper Removal from A-01 Outfall by Ion Exchange by :
Download or read book Copper Removal from A-01 Outfall by Ion Exchange written by and published by . This book was released on 1999 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chelex100, a commercially available ion exchange resin, has been identified in this study as having a significant affinity for copper and zinc in the A-01 outfall water. Removal of copper and zinc from A-01 outfall water will ensure that the outfall meets the state of South Carolina's limit on these heavy metals.
Book Synopsis Cadmium Removal From Cobalt Electrolyte by :
Download or read book Cadmium Removal From Cobalt Electrolyte written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to meet the stringent specifications associated with the prodution of LME Grade A cobalt cathode, producers need to ensure that number of impurities,including Cd, are removed from the advance electrolyte to ppb levels (~0.1 mg/L). Conventional options include ion exchange using amino methyl phosphonic acid resin and solvent extraction using D2EHPA. More recently a Cd-selective resin, employing Molecular Recognition Technology (MRT), become available from IBC Technologies, inc. These three potential unit operation were evaluated in parallel at Mintek. MRT was identified as the most technically feasible option. Results obtained on a cobalt advance electrolyte,containing 55 g/L Co, 6 mg/L Cd and 60 g/L Na2SO4, are presented in this paper.
Book Synopsis Extractive Metallurgy of Copper by : Anil Kumar Biswas
Download or read book Extractive Metallurgy of Copper written by Anil Kumar Biswas and published by Oxford ; Toronto : Pergamon. This book was released on 1980 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
