Author: J. G. EiselePublisher:
ISBN:
Category : Rare earth metals
Languages : en
Pages : 24
Book Description
Extraction and Separation of Rare-earth Elements and Yttrium with Dodecyl Phosphoric Acid-kerosine Solvent
Author: J. G. EiselePublisher:
ISBN:
Category : Rare earth metals
Languages : en
Pages : 24
Book Description
Extraction and separation of rare-earth elements and Yttrium with dodecyl phosphoric acid-kerosine solvent
Author: J. G. EiseleExtraction and Separation of Rare-earth Elements and Yttrium with Dodecyl Phosphoric Acid-kerosine Solvent
Author: Hydrometallurgy of Rare Earths
Author: Dezhi QiPublisher: Elsevier
ISBN: 0128139218
Category : Technology & Engineering
Languages : en
Pages : 814
Book Description
Hydrometallurgy of Rare Earths: Extraction and Separation provides the basic knowledge for rare earth extraction and separation, including flow sheet selection criteria and related technology. The book includes the latest research findings on all rare earth separation processes, methods of controlling operation costs, and strategies that help lower wastewater and waste solid discharge. It discusses many real process parameters and actual situations in rare earth separation plants, also examining the basic principles, technologies, process parameters and advances and achievements in the area of rare earth extraction and separation. In addition, the book covers extraction separation theory as developed by Professor Guanxian Xu and Professor Chunhua Yan and the creative use of a computational simulation program to replace the bench scale and pilot plant tests and directly design rare earth extraction separation processes. - Outlines the theory of solvent extraction and separation of rare earths (REs) - Provides the necessary tools for a REs separation plant design - Includes a unique simulation program for the calculation of all process parameters - Includes Chinese nomenclature that is useful for identifying the various processes, also comparing it to the global literature
Chelating Agents in Separation of Rare-earth Compounds by Solvent Extraction with Amines
Author: A. C. RiceProcess for Separation of the Rare Earths by Solvent Extraction
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Production rates for solvent extraction separation of the rare earths and yttrium from each other can be improved by the substitution of di(2-ethylhexyl) mono-thiophosphoric acid for di(2-ethylhexyl) phosphoric acid. The di(2-ethylhexyl) mono-thiophosphoric acid does not form an insoluble polymer at approximately 50% saturation as does the former extractant, permitting higher feed solution concentration and thus greater throughput.
Separation Hydrometallurgy of Rare Earth Elements
Author: Jack ZhangPublisher: Springer
ISBN: 3319282352
Category : Technology & Engineering
Languages : en
Pages : 273
Book Description
This book describes in a comprehensive manner the technical aspects of separation of rare earth elements into individual elements for industrial and commercial use. The authors include details on and differentiate among the effective separation of rare earth elements for various parts of the world. They introduce new applications of separation of rare earth elements from concentrates of diverse ore types.
Metallurgical Processing and the Effect of Ethylenediaminetetra-acetic Acid in Extraction and Separation of Rare-earth Elements by Solvent Extraction with Di-2ethylhexyl Phosphoric Acid
Author: Sileymane Alpha LoPublisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 106
Book Description
A study was conducted to determine the amenability to extraction of the rare earth elements (REE) and the effect of ethylene diamine tetra-acetic acid (EDTA), a chelating agent, on their separation in di-2ethylhexyl phosphoric acid (DEHPA) solvent extraction systems. To physically concentrate the ore, a screening process was used, and was successful in concentrating the rare earth elements hosted within the minerals in the fine size fractions, with higher grades in the minus 500 mesh (-25 microns) portion. The pre-concentrate was upgraded from a head grade of 13.8% to 19.1% REE using the simple screening process. Recoveries averaging 96% total rare earths were obtained in the leach tests with 20% hydrochloric acid at 90°C. Experiments of solvent extraction with DEHPA in kerosene were performed using the leachate produced in the leaching experiments. Different concentrations of EDTA were added to the aqueous phase prior to mixing with the organic. Addition of EDTA improves the percentage extraction and separation factors for some heavy rare-earth elements. Data from percent extraction and separation factors show noticeable sensitivity to concentrations of EDTA. It was observed that erbium (Er) and ytterbium (Yt) display the highest percent extractions of 84% and 92%, respectively.
Critical and Rare Earth Elements
Author: AbhilashPublisher: CRC Press
ISBN: 0429657374
Category : Science
Languages : en
Pages : 438
Book Description
This book is aimed to compile the distribution of rare earth elements in various resources with their processing from secondary resources. It includes details of various processes developed for extraction of rare earth elements from varied raw materials ranging from e-wastes, tailings, process wastes and residues. It emphasizes importance of processing of the secondary resources to assist environmental remediation of such untreated wastes and get finished products. It covers all aspects of rare metals and rare earth metals in one volume covering extraction, separation and recycling of secondary resources for extraction of these metals along with relevant case studies.
List of Bureau of Mines Publications and Articles ... with Subject and Author Index
Author: United States. Bureau of MinesPublisher:
ISBN:
Category : Mineral industries
Languages : en
Pages : 450
Book Description