公开(公告)号：US4771993A

公开(公告)日：1988-09-20

申请号：US858927

申请日：1986-05-02

申请人： Hugues Zanetta ,  Yann de Lassat de Pressigny ,  Michel Schneider

发明人： Hugues Zanetta ,  Yann de Lassat de Pressigny ,  Michel Schneider

IPC分类号： C21B7/16 ,  C21B5/00

CPC分类号： C21B5/002 ,  C21B5/003

摘要： The tuyere comprises a substantially cylindrical or slightly convergent frusto-conical downstream part, and a divergent frusto-conical upstream part; the plasma torch is placed co-axially to the tuyere at the inlet to the upstream part thereof; the solid materials injection nozzle issues at an angle into the upstream part of the tuyere and the angle of taper of the upstream part of the tuyere substantially corresponds to the angle of natural expansion of the plasma jet, so that said materials are carried with the plasma jet and that part of them are provided onto the inner wall of the tuyere.

摘要翻译： 风口包括大致圆柱形或略微收敛的截头圆锥形下游部分和发散的截头圆锥形上游部分; 等离子体焰炬与其上游部分的入口同时地放置在风口上; 固体材料注入喷嘴以一定角度向风口的上游部分出现，并且风口的上游部分的锥角基本对应于等离子体射流的自然膨胀角，使得所述材料与等离子体 并且其中的一部分被提供到风口的内壁上。

公开(公告)号：US4700930A

公开(公告)日：1987-10-20

申请号：US851204

申请日：1986-04-14

申请人： Yann de Lassat de Pressigny ,  Michel Schneider

发明人： Yann de Lassat de Pressigny ,  Michel Schneider

IPC分类号： C21B7/00 ,  C21B5/00 ,  F27B1/16 ,  C21B7/16

CPC分类号： C21B5/003 ,  C21B5/002

摘要： The invention relates to a device for injecting pulverulent material, such as coal, into a blast furnace. The device includes a hot blast tuyere issuing into the blast furnace, a nozzle fixed against said tuyere and co-axial thereto for bringing the hot blast, a branch connection produced obliquely on the nozzle and directed towards the tuyere, and an injection pipe traversing the branch connection to issue into the tuyere. According to the invention, the injection pipe is substantially an arc of circle, the convexity of which is directed towards the axis of the nozzle and of the tuyere. The radius of curvature is at least equal to one hundred times its inner diameter.

摘要翻译： 本发明涉及一种将诸如煤等粉状材料注入高炉的装置。 该装置包括一个放入高炉中的热风风口，一个固定在所述风嘴上并与之同轴的喷嘴，用于引起热风，一个在喷嘴上倾斜产生并指向风口的分支连接， 分支连接发送到风口。 根据本发明，注射管基本上是圆弧，其凸出面朝向喷嘴和风口的轴线。 曲率半径至少等于其内径的一百倍。

公开(公告)号：US5562753A

公开(公告)日：1996-10-08

申请号：US249211

申请日：1994-05-26

申请人： Yann de Lassat de Pressigny ,  Henri Gaye ,  Jean-Luc Roth ,  Yves Zbaczyniak

发明人： Yann de Lassat de Pressigny ,  Henri Gaye ,  Jean-Luc Roth ,  Yves Zbaczyniak

IPC分类号： C21C5/52 ,  C21C7/00 ,  F27B3/04

CPC分类号： F27B3/04 ,  C21C1/02 ,  C21C5/5211 ,  C21C5/5294 ,  C21C2007/0093 ,  C21C5/5252 ,  Y02P10/216

摘要： Both a method and apparatus for producing molten steel are provided wherein ferrous materials rich in carbonaceous materials are fused in a first vessel of a single electric furnace having separate first and second vessels. The carbonized molten metal thus obtained is then pretreated in a separate pretreatment facility to remove contaminants and the pretreated molten metal is then decarburized in the second vessel of the electric furnace. The decarburization of the pretreated metal in the second vessel of the furnace avoids reintroducing contaminants into the steel by avoiding contact between the pretreated metal and the slag produced when the initial carbonaceous materials are fused. Preferably, the first and second vessels are two vessels of a single electric furnace having a single electric power source.

摘要翻译： 提供了一种用于生产钢水的方法和装置，其中富含碳质材料的铁质材料在具有单独的第一和第二容器的单个电炉的第一容器中熔合。 然后将如此获得的碳化熔融金属在单独的预处理设备中进行预处理以除去污染物，然后将预处理的熔融金属在电炉的第二容器中脱碳。 在炉的第二容器中预处理金属的脱碳避免了通过避免预处理的金属与初始碳质材料熔融时产生的炉渣之间的接触而将污染物重新引入钢中。 优选地，第一和第二容器是具有单个电源的单个电炉的两个容器。