2 edition of Studies on solvent extraction reagents for copper. found in the catalog.
Studies on solvent extraction reagents for copper.
Roger Nicholas Place
Written in English
M.Sc. dissertation. Typescript.
|The Physical Object|
|Number of Pages||122|
Covers all aspects of solvent extraction from fundamental principles to industrial and research applications. International authorities describe the most current equipment, plant design, processes, and engineering practice in applying solvent extraction. Extensively s: 1. COGNIS, supplier of LIX®Reagents and inventor of copper solvent extraction (SX), has been the recognized market and technology leader for more than 45 years. Independent studies show LIX® Reagents are 10 – 25% more efficient than the competitive products and are used to produce over 60% of the world’s SX copper cathode.
solvent extraction reagents themselves^ Through the variation of molec ular parameters such as type of functional group and molecular geometry, new and useful properties can be created. Thus, a vast amount of research has been devoted to the design, synthesis and evaluation of new organic compounds for use as solvent extraction reagents. Solvent Extraction and Liquid Membranes offers a comprehensive review of the most important principles, calculations, and procedures involved in this widely applicable separation technique. The book’s pedagogical approach will benefit students and researchers in the field as well as working scientists and engineers who wish to apply solvent.
Solvent extraction of copper(II) from concentrated leach liquors min at 25oC. After the phases separated, the copper(II) concentration in the aqueous phase was determined by AAS using standard methods. The effect of extractant type on Cu-SX Significant copper(II) concentrations in SX aqueous feed solutions enforce the appli-. Copper processing is a complicated process that begins with mining of the ore (less than 1% copper) and ends with sheets of % pure copper called cathodes, which will ultimately be made into products for everyday most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and pyrometallurgy, respectively, due to the different.
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Table of ContentsBasic Process Reaction and Design ParametersHigh Selectivity of LIX 64n for CopperStripping Section — Two-Stage Mixing-SettlingLeach Liquor Throughput Determines SX Solvent Extraction Capital CostWhy Mixer-Settler Units are Preferred ContactorsChoosing the Number of Extraction StagesMaximum Stripping Efficiency is EssentialHow to Minimize Losses of Organic.
Publisher Summary. The chapter gives an overview of the chemistry of metal solvent extraction; it provides the factors underlying the strength of metal extractant interactions, their influence for different metals and extracting reagents, and other parameters of.
We offer a broad range of solvent extraction reagents, collectors (promoters), frothers, flocculants, and depressants. Products include specialized collectors used in the separation of copper sulfide ores and for copper containing byproduct metals, such as gold and molybdenum.
Flotation. LIX® solvent extractants are recognized throughout the copper industry as the go to reagent for copper recovery. BASF's broad range includes aldoxime and ketoxime extractants and incorporates blends formulated to specific customer needs / operational challenges.
Iyyanki V. Muralikrishna, Valli Manickam, in Environmental Management, Solvent Extraction. Solvent extraction can occur under three processing approaches.
The most common approach employs two phases in contact at ambient conditions of temperature and pressure, in which the contaminants are exchanged between the solid matrix and a liquid solvent.
Comparative experimental studies were carried out on extraction of copper(II) cations from aqueous acid nitrate media using four LIX‐reagents, representatives of different extractant classes: LIX N‐I, LIX N, LIX 84‐I and LIX 65N. As a diluent, liquid hydrocarbon undecane was used. Mechanistic studies of extraction of copper (II) from aqueous acid by 5-nonylhydroxybenzaldoximes in organic solvents.
ELECTROPHORETIC MOBILITY OF OIL DROPS IN THE PRESENCE OF SOLVENT EXTRACTION REAGENTS. Lin, K. Osseo-Asare. We describe a new technique for sample preparation, accelerated solvent extraction (ASE), that combines.
recovery. While some fundamental leaching studies had taken place8,9, on the whole leaching was a poorly practiced art and little had been done to make it a well-practiced science.
Solvent extraction for copper was not yet proven commer-cially so most copper companies were taking a wait and see attitude. Furthermore the only reagent. 2. Solvent extraction of dissolved molybdenum at pH by the alkylphosphonic acid PCA. ng of this metal from loaded solvent by appropriate ammonia aqueous solutions.
Solvent extraction of copper that remains in the molybdenum extraction raffinate by using LIX, a hydroxyoxime-type extractant.
About 80% of the world's copper-from-ore is produced by concentration/smelting/ refining of sulfide ores. The other 20% is produced by heap leaching/solvent extraction/electrowinning of oxide, and chalcocite ores. Copper production from recycled end-of-use objects is about 15% of copper-from-ore copper.
Cognis has developed a model that accurately predicts the copper strip point for virtually any copper solvent extraction reagent or combination of reagents under a wide variety of conditions. The treatment of leach liquor for solvent extraction of copper with CP revealed that 20% CP in kerosene, a 30 min period of contact time, and a pH of 3 were sufficient for the extraction.
The studied copper solvent extraction process consists of four units, three for extraction and one for stripping, as presented in Fig. inputs of the process are pregnant leach solution series and parallel flow rates, F(PLSS) and F(PLSP), pregnant leach solution copper concentration, c(PLS), lean electrolyte flow rate, F(LE), lean electrolyte copper concentration, c(LE).
The results for the solvent extraction give an extraction efficiency of % total copper acquired via mol L⁻¹ CYANEX® in kerosene at 27 ± 2°C within 25 min at pH Copper net transfer in organic phase at 30 vol % of reagent as a function of overall extraction O/A ratio, raffinate, pH A graphical comparison of the copper net transfer values (Fig.
The study would answer questions about the potential of tar sands in both the US and Canada and at the same time would support a US company which has developed a new solvent extraction method. The Athabasca deposit not only shows potential for oil production but in the recovery of titanium, zirconium, and other minerals which are classified as.
Abstract A study has been made of the extraction equilibrium of nickel(II), cobalt(II) and copper(II) from chloride solutions with 5‐dodecylsalicylaldoxime (Aloxime ), di(2‐ethylhexyl)phosphoric acid (D2EHPA), bis (2,4,4‐trimethylpentyl)phosphinic acid (Cyanex ) and its sulphur substituted analogs, called respectively Cyanex and Cyanexdissolved in hexane.
Solvent Extraction of Copper from Nitrate Media with Chelating LIX‐Reagents: Comparative Equilibrium Study. Solvent Extraction and Ion Exchange23 (5), DOI: / Krystyna Prochaska, Katarzyna Staszak.
Table of ContentsDescription of the Solvent Extraction ProcessMetal Species Extractable by SX Solvent ExtractionSX Solvent Extraction ReagentsTypes of ExtractantsChelation ExtractantsLaboratory Evaluation Program for a Copper Leach SolutionComputer-Generated McCabe-Theile Diagrams for CopperCommercial Applications for Copper RecoverySulfuric Acid Leach SolutionsCommercial Copper Solvent.
Bidentate 5,5ʹ-alkyl-3,3ʹ-bi-1H-pyrazole and 2-(5-alkyl-1H-pyrazolyl)pyridine ligands, L⁵ and L⁶, have been shown to be stronger synergists for the solvent extraction of Ni(II) from. GLOBAL SURVEY OF COPPER SOLVENT EXTRACTION OPERATIONS AND PRACTICES K.C.
Sole Consulting Hydrometallurgist Wyoming Way, Berario, Johannesburg, South Africa [email protected] G. Zárate Anglo American Pedro de ValdiviaSantiago, Chile J. Steeples Freeport McMoRan N.
Freeport McMoRan Rd, Safford, AZ, USA O. Tinkler Cytec Industries E. Technology Circle .•Section 4. Theory and Practice of Solvent Extraction Morenci: Making the Most of a World Class Resource Practical Aspects of Copper Solvent Extraction from Acidic Leach Liquors Evolutionary Development of Solvent Extraction Reagents: Real-Life Experiences Do's and Don'ts of SX Plant Design and Operation in this study experiments on separation of copper and nickel by solvent extraction have been performed using a modified aldoxime LIX N as the extractant.
LIX reagents are chelating extractants. The development of LIX reagents (Liquid Ion Exchange Reagents) for extrac- tion of metals has been a major breakthrough in efficient.