Separation of Rare Earth Fluorescent Powders by Two-Liquid Flotation using Organic Solvents
スポンサーリンク
概要
- 論文の詳細を見る
In this paper, we describe a method for separation of ultra-fine particles prior to recycling. The authors suggest a two-step process for separating a mixture of three different rare earth fluorescent powders (i.e., red, green, and blue). Each step of the process is a two-liquid flotation, which involves two organic solvents (i.e., a non-polar and a polar solvent, in order to create two different phases) and a surfactant to manipulate the wettability of the powders. In the first step, the green powder migrates toward a non-polar phase such as n-heptane and remains at the interface of two solvents. The remaining two components precipitate in the polar phase. In the second step, the blue powder migrates toward a non-polar phase and remains at the interface of two solvents, while the red powder precipitates in the polar phase. After testing various non-polar solvents, a selection was made, and the operational parameters (e.g., concentration of surfactant and solid) were varied in order to maximize the efficiency of the process. The grade and recovery of each separated fluorescent powder were both greater than 90%.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2008-06-25
著者
-
Dodbiba Gjergj
Department Of Geosystem Engineering School Of Engineering The University Of Tokyo
-
SADAKI Jun
Department of Geosystem Engineering, Graduate School of Engineering, The University of Tokyo
-
OTSUKI Akira
Department of Geosystem Engineering, Graduate School of Engineering, The University of Tokyo
-
MEI Guangjun
College of Chemistry and Chemical Engineering, Central South University
-
Fujita Toyohisa
Department Of Geosciences Mining Engineering And Materials Processing Akita University
-
Shibayama Atsushi
Department Of Biochemical And Chemical Engineering Faculty Of Engineering Gunma University
-
Dodbiba Gjergj
Department of Geosystem Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
-
Sadaki Jun
Department of Geosystem Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
-
Otsuki Akira
Department of Resources and Environmental Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
-
Mei Guangjun
College of Chemistry and Chemical Engineering, Central South University, Hunan, Changsha 410083, P.R. China
-
Shibayama Atsushi
Department of Materials-Process Engineering and Applied Chemistry for Environments, Faculty of Engineering and Resource Sciences, Akita University, Akita 010-8502, Japan
-
Otsuki Akira
Department of Chemistry and Physics, National Institute for Environmental Studies
関連論文
- Arsenic removal in low-grade fluorite by using mineral processing techniques (第7回資源リサイクル・材料科学に関する日韓国際シンポジウム特集)
- "Syn-Effect" in the Conversion of (E)-α, β-Unsaturated Esters to the Corresponding β, γ-Unsaturated Esters
- Copper Recovery from Printed Circuit Board by Carbonization
- Adsorption of Molybdenum Ion in Nitric Acie Solution by Using a Pb-Fe Based Adsorbent
- Multiple Calcified Metastatic Brain Tumor : Case Report
- Arsenic removal in low-grade fluorite by using mineral processing techniques (第7回資源リサイクル・材料科学に関する日韓国際シンポジウム特集)
- Intraorbital Subperiosteal Hematoma due to Paranasal Mucocele : Case Report
- Combination of Triboelectrostatic Separation and Air Tabling for Sorting Plastics from a Multi-Component Plastic Mixture
- Triboelectrostatic Separation of ABS, PS and PP Plastic Mixture
- Robust and Efficient Expression System for Stable Isotope-Labeled Peptides
- Evaluating public availability of environmental information: an indicator-based assessment (第4回 日韓資源リサイクル・材料科学に関する国際シンポジウム特集号)
- "Syn-Effect" in the Desulfonylation Reaction of a, a-Dialkylated (E)-Allylic Sulfones
- Measurement of particle size distribution of silica nanoparticles by interactive force apparatus under an electric field
- Two-Liquid Flotation : Heterocoagulation of Fine Particles in Polar Organic Solvent
- Solid-Solid Separation of Fluorescent Powders by Liquid-Liquid Extraction Using Aqueous and Organic Phases
- Leaching of Pt, Pd and Rh from Automotive Catalyst Residue in Various Chloride Based Solutions
- The effect of aggregation on rheological characteristics of an electrorheological fluid of the particle dispersion type
- Kinetic Study on the Leaching of Pt, Pd and Rh from Automotive Catalyst Residue by Using Chloride Solutions
- Remediation of Contaminated Soil by Fly Ash Containing Dioxins from Incineration by using Flotation
- Development of a Manufacturing Process of Biomass Solid Fuel with Wasted Coffee Beans and its CO_2 Assessment
- A novel flow sheet for processing of used lithium-ion batteries for recycling (第8回 資源リサイクル・材料科学に関する日韓国際シンポジウム特集)
- Thermal Decomposition of NbCl5 in Reductive Atmosphere by Using Hydrogen Gas
- Creep Behavior of Hypoeutectic Mg-Ca Binary Alloys
- Enclosure experiment on the control mechanism of planktonic bacterial standing stock
- Evaluating the Practical Application of Underwater Explosion for Recycling
- Fundamental Study on Recovery of WC from Hardmetal Sludge by Using Mineral Processing
- Leaching of Rare-Earth Elements and Their Adsorption by Using Blue-Green Algae
- Copper Recovery from Printed Circuit Board by Carbonization
- Separation of Rare Earth Fluorescent Powders by Two-Liquid Flotation using Organic Solvents
- A Preliminary Study on Employing High-Voltage Impulse for the Exploitation of Cobalt-Rich Crust
- Material Recycling and Recycling System using RFID Technology
- Measurements of size distribution of titanium dioxide fine particles in a highly concentrated non-aqueous suspension by using particle self-assembly under an electric field
- Identification and quantification of poly(oxyethylene) alkyl ether nonionic surfactants in river water at trace levels by field desorption mass spectrometry.
- A temperature-dependent desorption process of molecular ions in field desorption mass spectrometry.