发明名称 |
Moving-hearth heating furnace and method for making reduced metal agglomerates |
摘要 |
An annular rail 6 is fixed on the lower surface of a moving hearth 2, and the rail 6 is supported from below by support rollers 7 provided with elevating devices 8. The moving hearth 2 is continuously or intermittently moved downward by the elevating devices 8 depending on the thickness of a metal oxide layer formed by the deposition of powder of metal oxide agglomerates mixed into the furnace together with the metal oxide agglomerates so that a gap is provided between the surface of the metal oxide layer and the edge of the blade of a discharge screw 4 during operation. A means for preventing the formation of a metal plate and a method for operating the same are provided instead of a means and method including the vertical movement of a discharger for reduced metal, so that the maintenance work can be significantly reduced in a moving-hearth heating furnace, in which metal oxide agglomerates containing a carbonaceous material is placed on a moving hearth, the metal oxide agglomerates are heated and reduced to form reduced metal agglomerates, and the reduced metal agglomerates are. discharged from the furnace by a discharger to produce reduced metal.
|
申请公布号 |
US2003015064(A1) |
申请公布日期 |
2003.01.23 |
申请号 |
US20020193218 |
申请日期 |
2002.07.12 |
申请人 |
KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD) |
发明人 |
HASHIMOTO SUMITO;UEMURA HIROSHI |
分类号 |
C21B13/10;F27B3/10;F27B9/16;F27B9/39;F27D3/08;F27D99/00;(IPC1-7):C21B11/08 |
主分类号 |
C21B13/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|