研究等業績 - その他 - 柴山　敦

Investigation of Flotation Conditions for Treatment of Arsenic-bearing copper Ore

B. Enkhzul, K. Haga, A. Shibayama

Proceedings of the 15th International Symposium on East Asian Resources Recycling Technology (EARTH2019)     226 - 231   2019年

Metal Recovery and Reducing of Environmental loading of Copper Mine Tailings by High Pressure Leaching and SX-EW Process

K. Haga, L. Godirilwe, Y. Takasaki, D. Ishiyama, A. Shibayama

Proceedings of the 58th Annual Conference of Metallurgists[COM] Hosting The 10th International Copper Conference 2019   ( 594790 )   2019年

Recovery of Copper and Iron from Rougher Concentrate of Carbonaceous Copper Ore by Pressure Leaching

K. Haga, R. Sagami, T. Kawasaki, H. Matsuoka, K. Mitsuhashi, M. Kawata, A. Shibayama

Proceedings of the 15th International Symposium on East Asian Resources Recycling Technology (EARTH2019)     261   2019年

Removal of Silica and Bromine from Waste Printed Circuit Boards Via Superheated Steam Treatment and Dense Medium Separation

K. Haga, K. Shichiji, S. Kawamura, Y. Takasaki, A. Shibayama

Proceedings of EMC2019   3   1 - 9   2019年

Selective and Preferential Separation of Rhodium (III) from Palladium (II) and Platinum (IV) Using a m-Phenylene Diamine-Containing Precipitant

K. Matsumoto, S. Yamakawa, K. Ishibashi, M. Jikei, A. Shibayama

Scientific Reports   9 ( 1 )   2019年

Selective Extraction of Copper from Copper Concentrates Containing High-Arsenic Under High Pressure Oxidative Leaching

A. Shibayama, A. Batnasan, K. Haga

Proceedings of the 58th Annual Conference of Metallurgists[COM] Hosting The 10th International Copper Conference 2019   ( 594003 )   2019年

Separation of Silica from Zinc Silicate Leachate and Improvement of Filterability Using Addition Method

M. Kakazu, S. Kawamura, Y. Takasaki, K. Haga, A. Shibayama

Proceedings of the 15th International Symposium on East Asian Resources Recycling Technology (EARTH2019)     540 - 544   2019年

The Effect of Pb Addition on Passivation Behavior of High Silver-Containing Copper Anode During Electrorefining

L. Godirilwe, Y. Takasaki, S. Kawamura, K. Haga, A. Shibayama, R. Sato, Y. Takai

Proceedings of the 15th International Symposium on East Asian Resources Recycling Technology (EARTH2019)     383 - 387   2019年

Rapid and selective recovery of palladium from platinum group metals and base metals using a thioamide-modified calix[4]arene extractant in environmentally friendly hydrocarbon fluids

Yamada M.

Scientific Reports ( Scientific Reports )  8 ( 1 )   2018年12月

DOI

Nano Bubble and Emulsion Size Distribution Measurement by Interactive Force Apparatus

FUJITA Toyohisa, KUROSE Takeshi, PONOU Josiane, DODBIBA Gjergj, SHIBAYAMA Atsushi, OTSUKI Akira

International Journal of the Society of Materials Engineering for Resources   23 ( 2 ) 158‐161 - 161   2018年09月

J-GLOBAL

Recovery of light and heavy rare earth elements from apatite ore using sulphuric acid leaching, solvent extraction and precipitation

Battsengel A.

Hydrometallurgy ( Hydrometallurgy )  179   100 - 109   2018年08月

DOI

Calix[4]arene-based amino extractants containing n-alkyl moieties for separation of Pd(II) and Pt(IV) from leach liquors of automotive catalysts

Yamada M.

Metals ( Metals )  8 ( 7 )   2018年07月

DOI

Development of copper recovery process from flotation tailings by a combined method of high‒pressure leaching‒solvent extraction

Han B.

Journal of Hazardous Materials ( Journal of Hazardous Materials )  352   192 - 203   2018年06月

DOI

Investigation of copper and iron recovery from copper ore by high pressure leaching

Magwaneng R.

International Journal of the Society of Material Engineering for Resources ( International Journal of the Society of Material Engineering for Resources )  23 ( 1 ) 80 - 83   2018年03月

<p>The products from the pressure oxidation leaching of a carbonaceous sulphide ore were compared under the range of reaction conditions for copper and iron recovery. Experiments were conducted under temperature ranges of 100-180°C at different sulfuric acid concentrations (0- 1.2 mol dm^-3). The aim of the study was to improve recovery of copper and iron, and discuss practical issues associated with competing process for leaching of carbonaceous sulphide ores. The ore contains chalcopyrite, bornite, dolomite, muscovite, quartz, mica and calcite. It is shown that at least 90% copper could be extracted using sulfuric acid in the high pressure leaching process. Observations employed by XRD analysis on solid residue indicated that iron precipitates form a number of different phases of hematite and jarosite depending on parameters studied.</p>

DOI

Magnetic separation and leaching study of rare earth elements from apatite-iron ore

Battsengel A.

International Journal of the Society of Material Engineering for Resources ( International Journal of the Society of Material Engineering for Resources )  23 ( 1 ) 88 - 92   2018年03月

<p>Recovery of rare earth elements from apatite during phosphoric acid production based on nitric acid and sulphuric acid digestion is the most common treatment process for the industries. By the reaction of phosphate rock with sulphuric acid, the most of rare earth elements (REEs) are lost into the phosphogypsum and a remainder of the REEs in the sludge is dissolved partially by nitric acid solution. Whereas the REEphosphate minerals are dissolved about 50-60% in nitric acid at 70°C. Development of REEs leaching technique with high recovery is still essentialto reduce processing steps, energy consumption and emission of toxic gasses during the processing. The objective of this paper is to investigate the efficient condition for leaching of REEs from apatite-iron ore sample using magnetic separation and leaching with sulphuric acid solution. Ore sample contains major oxides as dominant 30.4 wt.% of calcium oxide (CaO), 28.0 wt.% of total iron oxides (TFexOy), 8.40 wt.% of silicon dioxide (SiO₂) and 10.96 wt.% of total rare earth oxides (TREO). Lanthanum, cerium, praseodymium and neodymium consist about 95% of the total rare earth elements (TREEs) in the ore. A wet high-intensity magnetic separator was used to remove iron bearing minerals. As results, 71% of iron was separated into the magnetic fraction from the iron rich apatite sample, while 92% of REEs were remained in the non-magnetic fraction. Then non-magnetic fraction was decomposed by dilute sulphuric acid solution. Analysis of leaching experiments indicated that more than 85% of REEs were dissolved into the leach solution.</p><p></p>

DOI

Mutual separation of palladium (II) and platinum (IV) from hydrochloric acid solutions usingm-phenylene diamine-containing agents

Matsumoto K.

International Journal of the Society of Material Engineering for Resources ( International Journal of the Society of Material Engineering for Resources )  22 ( 1-2 ) 15 - 19   2018年03月

<p><i>m</i>-Phenylene diamine-containing compounds were synthesized via a one-pot process and subsequently used as new precipitating agents (<b>PA1</b> and <b>PA2</b>). The precipitation of Pd and Pt was studied using <b>PA1</b> and <b>PA2</b> as metal precipitants. While <b>PA1</b> exclusively precipitated Pd from a HCl solution containing Pd, Pt, and base metals, <b>PA2</b> achieved precipitation of both Pd and Pt from the metal-containing HCl solution. Mutual separation of Pd and Pt was achieved by using <b>PA1</b> and <b>PA2</b> in the first and second precipitation steps, respectively. Separation tests at varying agent loadings revealed that Pd and Pt were precipitated by forming of an ion-pair composed of a metal chloro-complex anion (i.e., [PdCl₄]^2－ or [PtCl₆]^2－) and one precipitating agent molecule (i.e., divalent cation). The stoichiometric ratio of the ion-pairs was in agreement with the atomic ratios estimated from X-ray photoelectron spectroscopy results. Since the precipitation mechanism herein was based on the formation of an ion-pair, the cations of the precipitating agents only recovered Pd and Pt chloro-complex anions when the cations of the base metals were present in the solution. The different hydrophobicities of the precipitating agents enabled mutual separation of Pd and Pt.</p>

DOI

Recovery of Precious and Base Metals from Waste Printed Circuit Boards Using a Sequential Leaching Procedure

Batnasan A.

JOM ( JOM )  70 ( 2 ) 124 - 128   2018年02月

DOI

Fining of alumina inclusion particles in steel

Inoue R.

ICS 2018 - 7th International Congress on Science and Technology of Steelmaking: The Challenge of Industry 4.0 ( ICS 2018 - 7th International Congress on Science and Technology of Steelmaking: The Challenge of Industry 4.0 )    2018年

Formation of hexavalent chromium in Cr-containing steelmaking slag

Sato Y.

Archives of Materials Science and Engineering ( Archives of Materials Science and Engineering )  94 ( 1 ) 5 - 10   2018年

DOI

Investigation for removal of organic carbon from carbonaceous copper sulphide ore and improving the recovery of copper through flotation

Magwaneng R.

Minerals, Metals and Materials Series ( Minerals, Metals and Materials Series )  Part F8   343 - 351   2018年

DOI