Results 201 to 210 of about 1,331 (240)

The relationship between natural hydrogen flow rates and production viability. [PDF]

Sci Rep
Franke D, Klitzke P, Bagge M, Lutz R, Ostertag-Henning C, Blumenberg M, Thiel C, Bahr A.   +7 more
europepmc   +1 more source

Enhanced tantalum and niobium recovery from fine-grained low-grade Abu Dabbab ore using Falcon concentration and magnetic separation. [PDF]

Sci Rep
Hassan ERE, Chen Y, Abdel-Khalek NA, Elbendari AM.   +3 more
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Study on thorium recovery from bastnaesite treatment process

Journal of Rare Earths, 2012
Abstract Thorium (Th) stripping behavior from HEH/EHP (2-(ethylhexyl) phosphoric acid mono-2-ethylhexyl ester) with H 2 SO 4 , HCl and HNO 3 were investigated. The results indicated that H 2 SO 4 was the most effective stripping reagent compared with HCl and HNO 3 . Selecting H 2 SO 4 as the stripping reagent, the effect of phase ratio, acidity, H
Xiaowei Huang, Dali Cui, Zhiqi Long
exaly   +2 more sources

The Recovery of Trace Thorium from Large Quantities of Uranium

Solvent Extraction and Ion Exchange, 2009
This work describes the chromatographic separation of trace amounts of Thorium (mg or less) from large quantities of Uranium (g or kg). The separation method employs extraction chromatographic materials containing tetra(n‐octyl)diglycolamide (TODGA) and quaternary amine extractants.
E Philip Horwitz
exaly   +2 more sources

Recovery of Ra-223 from natural thorium irradiated by protons

Radiochimica Acta, 2016
AbstractIrradiation of natural thorium with medium-energy protons is considered to be a prospective approach to large-scale production of225Ac and223Ra. In addition to the earlier-developed method of225Ac isolation, the present work focuses on the simultaneous recovery of.223Ra from the same thorium target.
Stepán Kalmykov, Aleksandr N Vasiliev, Boris Zhuikov   +2 more
exaly   +2 more sources

Recovery of uranium, thorium and rare earth from industrial residues

Hydrometallurgy, 2018
Abstract This paper addresses the development of a process to recovery uranium, thorium and rare earth elements from an industrial residue, with a subsequent removal of U and Th from the liquor generated. Sulfuric acid digestion followed by water leaching was found to be the best method to solubilise the metals.
CARLOS A Morais
exaly   +2 more sources

Recovery of uranium and thorium from zirconium oxychloride by solvent extraction

Journal of Radioanalytical and Nuclear Chemistry, 2011
A solvent extraction process is proposed to recover uranium and thorium from the crystal waste solutions of zirconium oxychloride. The extraction of iron from hydrochloride medium with P350, the extraction of uranium from hydrochloride with N235, and the extraction of thorium from the mixture solutions of nitric acid and the hydrochloric acid with P350
Xueming Zhong
exaly   +2 more sources

Selective Recovery of Uranium and Thorium Ions from Dilute Aqueous Solutions by Animal Biopolymers

Biological Trace Element Research, 2002
Selective actinide ion recovery from dilute, aqueous, multication waste streams is an important problem. The recovery of uranium (U) and thorium (Th) by various animal biopolymers was examined. Of four species of biopolymers tested, a high uptake of uranium and thorium was found in hen eggshell membrane (ESM) and silk proteins, with the maximum uranium
Kyozo Suyama, Shin-Ichi Ishikawa
exaly   +3 more sources

Thorium and rare earth recovery in Canada: the first 30 years

Canadian Metallurgical Quarterly, 2013
AbstractPioneering methods to recover thorium and rare earths as byproducts of uranium recovery were developed and applied in Elliot Lake, Ontario, during the 1960s. The district became a major supplier of these key elements from about 1960 until 1990 and at one stage supplied much of the world’s thorium and perhaps one third of its yttrium. This paper
exaly   +2 more sources