| Project/Area Number |
03555123
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
都市工学・衛生工学
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| Research Institution | NAGAOKA UNIVERSITY OF TECHNOLOGY |
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Principal Investigator |
MOMONOI Kiyoshi NAGAOKA UNIVERSITY OF TECHNOLOGY FACULTY OF ENGINEERING.PROFESSOR, 工学部, 教授 (60003852)
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| Co-Investigator(Kenkyū-buntansha) |
SIMIZU Koh KUBOTA CO., LTD, HEAD OF TECHNICAL RESEARCH DIVISION, 環境施設事業本部, 部長
FUGIMOTO Tadao KUBOTA CO., LTD, MANAGING DIRECTOR, 環境施設事業本部, 事業部長
NOIKE Tatuya TOHOKU UNIVERSITY, PROFESSOR, 工学部, 教授 (90005398)
KOMATU Tosiya NAGAOKA UNIVERSITY OF TECHNOLOGY FACULTY OF ENGINEERING, ASSISTANT, 工学部, 助手 (10234874)
HARADA Hideki NAGAOKA UNIVERSITY OF TECHNOLOGY FACULTY OF ENGINEERING, ASSOCIATE PROFESSOR, 工学部, 助教授 (70134971)
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| Project Period (FY) |
1991 – 1992
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| Project Status |
Completed (Fiscal Year 1992)
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| Budget Amount *help |
¥13,300,000 (Direct Cost: ¥13,300,000)
Fiscal Year 1992: ¥5,400,000 (Direct Cost: ¥5,400,000)
Fiscal Year 1991: ¥7,900,000 (Direct Cost: ¥7,900,000)
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| Keywords | MELTING PROCESS / BASICITY / WASTED MATTER / SLAG / SEWAGE SLUDGE / 溶融 / 水砕 / 表面溶融 / 結晶化 / 核形成 / 結晶成長 |
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| Research Abstract |
In the melting process, it is important to lower a melting and pouring point temperature from a economical viewpoint and to make a good prodact such as a crystallization slag for a utilization as construction materials. In this study, a method to make a crystallization slag in the melting process and to lower a melting temperature was discussed. The following results were obtained :
1)When CaO and Fe_2O_3 content in a Ash composition are higher, the crystallization slag is formed. Especially, Fe_2O_3 acts as a nucleation material. When Fe_2O_3 content is higher, the temperature that nucleation rate became maximum decreases.
2)The inorganics in wastes consist of many metal compounds. In the melting process, there are tow ranges where the melting temperature decreases. One of them is a range where a ratio of Na_2O and CaO is 2-0.4, and basicity is 0.2-0.4. The other is a range where a ratio of Na_2O and CaO is 0.2-0.4, and basicity is 0.7-1.2.
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