Selective recovery of rare metals from optical glass by chlorination
| Project/Area Number |
22605002
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
元素戦略
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| Research Institution | Akita University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
MOCHIZUKI Yuuki 秋田大学, ベンチャービジネスラボラト リー, 博士研究員 (90546087)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 光学ガラス / 塩素化 / 炭素還元 / レアメタル / 研磨紛 / 塩化揮発 / 研磨粉 / リサイクル / 光学レンズ |
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| Research Abstract |
To develop an efficient recovery process of rare metals from ground powder and fragment of optical glass, the release behavior of La, Nb, Ta, Gd and coexisting elements (Ti, Zr, Zn) was investigated under the conditions of terminal temperatures from 200 to 1000℃ in a Cl_2 gas stream. A three-step heat treatment process in a Cl_2 gas stream with carbon addition was proposed to recover the rare metals selectively from the optical glass.
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Report
(4 results)
Research Products
(15 results)
