Extraction and Separation of Rare-earth Elements and Yttrium with Dodecyl Phosphoric Acid-kerosine Solvent PDF Download
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Author: J. G. Eisele
Publisher:
ISBN:
Category : Rare earth metals
Languages : en
Pages : 24
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Book Description
Author: J. G. Eisele
Publisher:
ISBN:
Category : Rare earth metals
Languages : en
Pages : 24
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Book Description
Author: J. G. Eisele
Publisher:
ISBN:
Category :
Languages : en
Pages : 16
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: A. C. Rice
Publisher:
ISBN:
Category : Amines
Languages : en
Pages : 24
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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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.
Author: Jack Zhang
Publisher: Springer
ISBN: 3319282352
Category : Technology & Engineering
Languages : en
Pages : 273
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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.
Author: Abhilash
Publisher: CRC Press
ISBN: 0429659814
Category : Science
Languages : en
Pages : 384
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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.
Author: Sileymane Alpha Lo
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 106
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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.
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1320
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Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1250
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