基本信息:
- 专利标题： BOTTOM STIRRING TUYERE AND METHOD FOR A BASIC OXYGEN FURNACE
- 申请号：US15873616 申请日：2018-01-17
- 公开(公告)号：US20190218631A1 公开(公告)日：2019-07-18
- 发明人： Gregory J. Buragino , Shailesh Pradeep Gangoli , Anshu Gupta , Anup Vasant Sane , Avishek Guha , Xiaoyi He , Michael David Buzinski , Kyle J. Niemkiewicz , Russell James Hewertson
- 申请人： Air Products and Chemicals, Inc.
- 申请人地址： US PA Allentown
- 专利权人： Air Products and Chemicals, Inc.
- 当前专利权人： Air Products and Chemicals, Inc.
- 当前专利权人地址： US PA Allentown
- 主分类号： C21C5/48
- IPC分类号： C21C5/48 ; B22D1/00 ; C21C5/34
摘要：
A method of operating a BOF bottom stir tuyere having an inner nozzle surrounded by an annular nozzle, including during a hot metal pour phase and a blow phase, flowing an inert gas through both nozzles; during a tap phase, initiating a flow of a first reactant through the inner nozzle and a flow of a second reactant through the annular nozzle, and ceasing the flow of inert gas through the nozzles, wherein the first and second reactants includes fuel and oxidant, respectively, or vice-versa, such that a flame forms as the fuel and oxidant exit the tuyere; during a slag splash phase, continuing the flows of fuel and oxidant to maintain the flame; and after ending the slag splash phase and commencement of another hot metal pour phase, initiating a flow of inert gas through both nozzles and ceasing the flows of the first and second reactants.
公开/授权文献:
IPC结构图谱:
| C | 化学；冶金 |
| --C21 | 铁的冶金 |
| ----C21C | 生铁的加工处理，例如精炼、熟铁或钢的冶炼；熔融态下铁类合金的处理 |
| ------C21C5/00 | 碳钢的冶炼，例如普通低碳钢，中碳钢，或铸钢 |
| --------C21C5/04 | .平炉钢，例如西门子—马丁炉钢的冶炼 |
| ----------C21C5/38 | ..废气或烟尘的去除 |
| ------------C21C5/46 | ...零件或辅助设备 |
| --------------C21C5/48 | ....转炉的炉底或风嘴 |