APPARATUS FOR ACCELERATING METALLURGICAL REACTIONS

• US 3,785,632 A
• Filed: 03/09/1972
• Issued: 01/15/1974
• Est. Priority Date: 03/17/1969
• Status: Expired due to Term

• Current Assignee: Friedrich Kraemer, Hans-Peter Schulz, Hilmar Weidenmuller, Jorn Mandel, Jurgen Motz, Klaus Dieter Haverkamp, Klaus Rohrig, Siegfried Mayer
• Original Assignee: Friedrich Kraemer, Hans-Peter Schulz, Hilmar Weidenmuller, Jorn Mandel, Jurgen Motz, Klaus Dieter Haverkamp, Klaus Rohrig, Siegfried Mayer
• Inventors: Mandel, Jorn, Schulz, Hans-Peter, Kraemer, Friedrich, Mayer, Siegfried, Rohrig, Klaus, Weidenmuller, Hilmar, Haverkamp, Klaus Dieter, Motz, Jurgen
• Primary Examiner(s): Dost, Gerald A.
• Application Number:
  US05/233,237
• Time in Patent Office: 677 Days
• Field of Search: 266/34T,34A,34V 75/55,61
• US Class Current: 266/235
• CPC Class Codes: F27D 27/00 Stirring devices for molten material F27D3/14 takes precedence

Abstract

Apparatus including means for adjusting vertically the level of a mechanical stirring member with respect to the vertical level of a melt, e.g. the vertical level of the interface between the top surface of an iron melt and slagging or the like ingredients floating on such iron melt surface especially in a circular upright ladle with a discharge aperture, and method of using such stirring member, e.g. to enhance or accelerate contact and reaction between such melt and floating ingredients, to carry out metallurgical reactions, as well as tough cast iron containing spherical graphite producible thereby.

Claims

1. Heat retaining mixing assembly for accelerating as well as enhancing metallurgical reactions by mechanical stirring of a melt in a container, which comprises an independently transportable cover adapted to be removably positioned in substantial closing relation with the upper end of such container to minimize heat losses from the melt, shaft support means disposed on said cover, an upright driving shaft rotatably mounted on said support means and having a lower portion extending downwardly through said cover, a relatively elongated mixing member in the form of a solid beam-shaped mass of refractory material secured to the lower end of said lower portion of the shaft and extending substantially perpendicular to said shaft for contact with the melt to promote flow and rapid and intimate mixing of the contents thereof upon rotation in turn of said shaft, and adjustment means on said support means operatively connected to said shaft to adjust the vertical disposition of said shaft and in turn said mixing member with respect to said cover and such melt, said adjustment means including main adjustment means interconnecting said shaft support means and shaft for step-wise vertical adjustment of said shaft with respect to said cover.

2. Assembly according to claim 1 wherein said cover is provided with a vertically displaceable guide member, extending downwardly, therefrom, and arranged to be lowered into the container to conduct a portion of the flowing contents at the upper end of said container peripherally outwardly for discharge thereof from the container upper end.

3. Assembly according to claim 2 wherein said cover is disposed above such a container and said container is provided with an aperture at the upper edge thereof in the vicinity of said guide member to discharge said portion of the flowing contents conducted peripherally outwardly by said guide member.

4. Assembly according to claim 1, said adjustmEnt means further including fine adjustment means disposed on said support means operatively connected to said shaft independently of said main adjustment means, for infinite fine adjustment of the vertical disposition of said shaft and in turn said mixing member with respect to said cover.

5. Assembly according to claim 4 wherein said support means include opposed upright support members attached to said cover and a cross-plate vertically adjustably connected therewith via said main adjustment means, said shaft being rotatably mounted on and extending through said cross-plate and in turn therebelow through said cover and being controlled via said main adjustment means to cause vertical displacement of said shaft with respect to said upright support members and said cover.

6. Assembly according to claim 5 wherein said fine adjustment means are fixedly mounted on said cross-plate and control the vertical displacement of said shaft with respect to said cross-plate and in turn said cover.

7. Assembly according to claim 6 wherein drive means operatively connected to rotate said shaft and in turn said mixing member are mounted on said cross-plate.