研究等業績 - その他 - 柴山　敦

Nano bubble and emulsion size distribution measurement by interactive force apparatus

Fujita T.

International Journal of the Society of Material Engineering for Resources ( International Journal of the Society of Material Engineering for Resources )  23 ( 2 ) 158 - 161   2018年

<p>Nano bubbles are prepared by using a pressurized pump or fine ceramics in water or oil. The prepared nano bubbles are stable for more than several days. Nano emulsion (w/o type) is prepared by mixing oil, water and surfactant with homogenizer and stable more than several months. The prepared bubble and emulsion size distribution in liquid is usually measured by dynamic light scattering method. However, it is difficult to measure the particle size for smaller refractive indexes between dispersed particle and solvent by the light scattering method and small amount of particle volume. Here, the dynamical method of interactive force measurement between dispersed nano bubble and emulsion under electric field has been used to measure any kind of small particle size distribution.</p>

DOI

Recovery of valuable metals from waste printed circuit boards by using iodine-iodide leaching and precipitation

Batnasan A.

Minerals, Metals and Materials Series ( Minerals, Metals and Materials Series )  Part F5   131 - 142   2018年

DOI

Selective Recovery of Palladium from PGM Containing Hydrochloric Acid Solution Using Thiocarbamoyl-substituted Adsorbents

Haga K.

International Journal of the Society of Material Engineering for Resources ( International Journal of the Society of Material Engineering for Resources )  23 ( 2 ) 173 - 177   2018年

<p>Two thiocarbamoyl compounds, monomer-type 4-<i>tert</i>-butyl(dimethylthiocarbamoyloxy) benzene (<b>1</b>) and dimer-type 1,1'-bis[(dimethylthiocarbamoyl)oxy]-2,2'-thiobis[4-<i>t</i>-butylbenzene] (<b>2</b>), were impregnated on ambertite XAD-7 resin for selective recovery of palladium from platinum group metals (PGM) containing a HCl solution. Pd(II)-ion adsorption performance of <b>1</b> and <b>2</b> impregnated resins were carried out in batch mode by varying HCl concentration, shaking time, Pd(II) concentration, and adsorbent amount. The monomer-impregnated adsorbent showed high Pd(II) sorption (94.1%) as compared with dimer-impregnated adsorbent (74.4%) in 1 M HCl media. Both monomer- and dimer-impregnated adsorbents exhibited a selective Pd(II) sorption from a mixed solution of PGM (Pd, Pt, and Rh). Pd(II)-ion desorption from Pd(II) adsorbed adsorbents were carried out using HCl-thiourea mixture as a desorption reagent. The results showed that both resins were suitable for selective separation of Pd(II) from PGM secondary resources.</p>

DOI

Volatilization of arsenic and antimony from tennantite/Tetrahedrite ore by a roasting process

Haga K.

Materials Transactions ( Materials Transactions )  59 ( 8 ) 1396 - 1403   2018年

<p>The volatilization of arsenic (As) and antimony (Sb) impurities in a copper ore consisting of tennantite (Cu₁₂As₄S₁₃)/tetrahedrite (Cu₁₂Sb₄S₁₃) by roasting in both nitrogen and air atmospheres was investigated in this study. The roasting experiments were performed at different temperatures ranging from 500 to 1200°C and different retention times from 15 to 60 minutes while the nitrogen and air flow to a furnace chamber was same as 300 ml/min.</p><p>The results showed that at 700°C, the maximum As volatilization in nitrogen and air atmospheres was reached over 90% and about 70%, respectively. Whereas the maximum Sb volatilization was about 90% at 1200°C in a nitrogen atmosphere and over 95% at 600°C in an air atmosphere. Meanwhile, copper and iron in the ore sample were not volatilized under the conditions. The contents of As, Sb and Cu in the residue obtained from roasting at 1200°C in a nitrogen atmosphere were 0.004 mass%, 0.75 mass% and 34.2 mass%, while their contents were 0.45 mass% As, 4.19 mass% Sb and 34.5 mass% Cu in the residue from roasting at 1000°C in an air atmosphere. Volatilization of arsenic from enargite, arsenic and antimony from tennantite/tetrahedrite sample containing chalcopyrite in a nitrogen atmosphere under the determined roasting condition were also discussed.</p><p>It suggests that As and Sb can be selectively separated from each other/other metals by volatilization. On the other hands, high grade copper concentrate with lower As and Sb contents can be made by volatilization in a nitrogen atmosphere.</p>

DOI

Applying Analysis of Mineral Surfaces to Predict Flotation Behavior

H. Matsuoka, R. Kawarabuki, K. Mitsuhashi, M. Kawata, C. Tokoro, K. Haga, A. Shibayama

Proceedings of XXIV International Mineral Processing Congress Proceedings ( IMPC2018)     330 - 337   2018年

Copper Recovery and Arsenic Removal from Enargite Ores and Concentrates during High Pressure Oxidative

A. Shibayama, A. Batnasan, K. Haga

Proceedings of XXIV International Mineral Processing Congress Proceedings (IMPC2018)     163 - 172   2018年

Copper Recovery from the Mine Tailings by Combination of Flotation with High-Pressure Oxidative Leaching and Solvent Extraction

A. Shibayama, B. Han, K. Haga, Z. Stevanović, R. Jonović, L. Avramović, R. Marković, D. Urosević, Y. Takasaki, N. Masuda, D. Ishiyama

Proceedings of the First Global Conference on Extractive Metallurgy (Extraction 2018)     1299 - 1307   2018年

Fining of Alumina Inclusion Particles in Steel

R. Inoue, Y. Takasaki, A. Shibayama

Proceedings of the 7th International Conference on Science and Technology of Steelmaking   ( ICS036 ) 1 - 8   2018年

Formation of Hexavalent Chromium in Cr-containing Steelmaking Slag

Y. Sato, K. Ijima, Y. Takasaki, A. Shibayama, R. Inoue

Proceedings of the Third International Conference on Advances in Metallurgical Processes and Materials     46 - 51   2018年

Investigation for Removal of Organic Carbon from Carbonaceous Copper Sulphide Ore and Improving the Recovery of Copper Through Flotation

R. Sandra Magwaneng, K. Haga, A. Batnasan, A. Shibayama, M. Kosugi, R. Kawarabuki, K. Mitsuhashi, M. Kawata

Proceedings of the Characterization of Minerals, Metals, and Materials 2018     343 - 351   2018年

Investigation of Copper and Iron Recovery from Copper Ore by High Pressure Leaching

R. Sandra Magwaneng, B. Altansukh, K. Haga, A. Shibayama, M. Kosugi, R. Kawarabuki, K. Mitsuhashi, M. Kawata

International Journal of the Society of Materials Engineering for Resources   23 ( 1 ) 80 - 83   2018年

Leaching of Gold from Waste Printed Circuit Boards in an Iodine-Iodide Solution and Regeneration of the Spent Lixiviant

A. Batnasan, K. Haga, A. Shibayama

Proceedings of XXIV International Mineral Processing Congress Proceedings (IMPC2018)     348 - 356   2018年

Magnetic Separation and Leaching Study of Rare Earth Elements from Apatite-Iron ore

A. Battsengel, B. Altansukh, K. Haga, Y. Watanabe, A. Shibayama

International Journal of the Society of Materials Engineering for Resources   23 ( 1 ) 88 - 92   2018年

Pressure Leaching of Carbonaceous Sulfide Concentrates for Recovery of Copper and Iron

R. S. Magwaneng, K. Haga, A. Batnasan, A. Shibayama, M. Kosugi, R. Kawarabuki, K. Mitsuhashi, M. Kawata

Proceedings of XXIV International Mineral Processing Congress Proceedings (IMPC2018)     545 - 553   2018年

Recovery of Rare Earth Elements and Phosphorus from Apatite Ore by Leaching and Precipitation

K. Haga, K. Amano, A. Battsengel, A. Batnasan, Y. Watanabe, A. Shibayama

Proceedings of XXIV International Mineral Processing Congress Proceedings (IMPC2018)     238 - 245   2018年

Recovery of Valuable Metals from Waste Printed Circuit Boards by Using Iodine-Iodide Leaching and Precipitation

A. Batnasan, K. Haga, A. Shibayama

Proceedings of the Rare Metal Technology 2018     131 - 142   2018年

Removal of Silica and Alumina as Impurities from Low-Grade Iron Ore Using Wet High-Intensity Magnetic Separation and Reverse Flotation

Kazutoshi Haga, Moses Charles Siame, Atsushi Shibayama

Journal of Minerals and Materials Characterization and Engineering ( Scientific Research Publishing, Inc. )  06 ( 03 ) 382 - 394   2018年

DOI

Selective Recovery of Palladium from PGM Containing Hydrochloric Acid Solution Using Thiocarbamoyl-Substituted Adsorbents

K. Haga, S. Sato, M. Rajiv Gandhi, M. Yamada, A. Shibayama

International Journal of the Society of Materials Engineering for Resources   23 ( 2 ) 173 - 177   2018年

Selective Separation of Light and Heavy Rare Earth Elements from the Pregnant Leach Solution of Apatite Ore with D2EHPA

Ariuntuya Battsengel, Altansukh Batnasan, Kazutoshi Haga, Atsushi Shibayama

Journal of Minerals and Materials Characterization and Engineering ( Scientific Research Publishing, Inc. )  06 ( 05 ) 517 - 530   2018年

DOI

Volatilization of Arsenic and Antimony from Tennantite/Tetrahedrite Ore by a Roasting Process

K. Haga, B. Altansukh, A. Shibayama

Materials Transactions   59 ( 8 ) 1396 - 1403   2018年