Makino Corporation

Okazaki, Japan

Makino Corporation

Okazaki, Japan
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Kamitani M.,Osaka Prefecture University | Kamitani M.,Makino Corporation | Tagami T.,Osaka Prefecture University | Fukaya T.,Recycle Technology Japan Corporation | And 4 more authors.
Key Engineering Materials | Year: 2014

Synthesis of monolithic A- Type zeolite (LTA) was attempted by hydrothermal processing from recycling flat glass. Crashed flat glass were pretreated and subsequently hydrothermally treated at 95°C for 24 h. As a result, monolithic A- Type zeolite without another phase was successfully synthesized by the hydrothermal treatments. The synthetic condition was clarified during the pretreatment and hydrothermal treatments. The development of hydrothermal process for recycle of flat glass was carried out since the monolithic A- Type zeolite was obtained under the optimum synthetic conditions (reaction temperatures, reaction time and pretreatment conditions etc). © (2014) Trans Tech Publications, Switzerland.


Kamitani M.,Makino Corporation | Kamitani M.,Osaka Prefecture University | Tagami T.,Osaka Prefecture University | Kondo M.,Makino Corporation | And 4 more authors.
Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan | Year: 2014

The samples from A-type zeolite and ground soda-lime glass powders were solidifed by calcinations at 600 to 800°C in air atmosphere. These hybrid zeolite/glass samples at 700°C were in part insufficiently densified and hybrid samples were fully densified at 800°C, although the densification was not generated at 600°C. A-zeolites were still stable in glass melt at 800°C for hybrid zeolite/glass samples. These hybrid zeolite/glass samples had the ion exchange ability of 20% against Sr2+ and the high ability over 80% against Cs+ as well as A-zeolite. Microstructures of obtained hybrid zeolite/glass samples were evaluated. © 2014 The Ceramic Society of Japan. All rights reserved.


Ishiyama S.,Japan Atomic Energy Agency | Kamitani M.,Makino Co. | Kondo M.,Makino Co. | Hiki A.,Makino Co.
Kagaku Kogaku Ronbunshu | Year: 2013

Chemical interface controlled dispersion and high-speed shearing water washing tests were carried out with highly radioactive contaminated soil of over 570,000 Bq/kg in Fukushima. In present experiment, ion plating Al2O3 ceramic coating was applied to SUS304 substrate material for prevention of radioactive contamination, and its erosion and decontamination performance were assessed. The following results were obtained. (1) Adhesion of fission product (FP) contained in refined soil particles was observed on the surface of SUS304 test coupons coated with 5 μm of Al2O3. In wipe-out tests, contaminated soil particles were easily removed from the surface of Al2O3 coated test coupon, whereas contaminated soil particles were tightly bound to the surface of uncoated SUS coupons. (2) The erosion rate of uncoated SUS coupons was estimated as 0.94 μm/h within 1 h of soil washing operation, after which no erosion was observed. Very slow erosion of 0.14 μm/h was observed in the case of Al2O3 coated test coupons during the soil washing process. © 2013 The Society of Chemical Engineers, Japan.


Ishiyama S.,Japan Atomic Energy Agency | Kamitani M.,Makino Co. | Kondo M.,Makino Co. | Hiki N.,Makino Co.
Kagaku Kogaku Ronbunshu | Year: 2013

Chemical interface controlled dispersion and high-speed shearing (CDS) washing was conducted for highly radioactive (over 570,000 Bq/kg) contaminated soils from school grounds, moorland and roadsides in Fukushima and the following results were obtained. (1) Washing rate of the three kinds of contaminated soils reached 60-98% after 30 min of CDS water washing. (2) Amounts of reclaimed soil (<8,000 Bq/kg) recovered were 60-82 wt%. In the case of moorland soil, 506 Bq/kg×33 wt% was achieved. (3) Volume reductions of 60-85 wt% were achieved for all contaminated soils. (4) Recoverable quantities of total radioactive sources contained in soils were over 90%. (5) The main FP-trapping mineral contained in the contaminated soil of school grounds was lamellar silicate, and that of moorland and roadside soils was mordenite. © 2013 The Society of Chemical Engineers, Japan.


Kamitani M.,Osaka Prefecture University | Kamitani M.,Makino Corporation | Kondo M.,Makino Corporation | Nakahira A.,Osaka Prefecture University
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy | Year: 2015

In order to construct the resources circulation society in Japan, we investigated the material recycling methods on huge amount of wasted glasses. Because wasted glasses could be chemically activated by ball milling method, and we tried to modify up to the environmental clean-up materials. The self-hardening phenomenon was confirmed from ball milled wasted liquid crystal display panel glasses after alkaline treatment. The characterization of the hardened samples was carried out. These results showed that the self-hardening induced mechano-chemical effects will open a new method for wasted glass utilizations. © 2015, Journal of the Japan Society of Powder and Powder Metallurgy. All rights reserved.

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