2016 Fiscal Year Final Research Report
Fundamental study on high-temperature chlorination reaction for the development of a novel process for recycling cemented carbide scrap
| Project/Area Number |
15K14190
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Metal making/Resorce production engineering
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2015-04-01 – 2017-03-31
|
| Keywords | タングステン / コバルト / 塩化反応 / 超硬工具 / リサイクル |
|---|
| Outline of Final Research Achievements |
Thermodynamic analyses and fundamental experiments were performed to investigate suitable reaction conditions for the separation of tungsten from cemented carbide scrap as chloride and/or oxychloride vapors. It was found that tungsten in grinding sludge and its roasted product could be volatilized as chlorides and/or oxychlorides by reacting with chlorine gas or metal chlorides, such as iron trichloride, under a suitable oxygen partial pressure at around 900 K. High-temperature chlorination reaction has the potential to be utilized in the development of a novel recycling process with small environmental burden and high refining capacity.
|
| Free Research Field |
材料工学
|
