Abstract: A slag conditioner for extending the life of a BOF vessel lining utilizing recycled blast furnace filter cake dewatered by contact with a hot slag; its process of production, and method of use.
Type:
Application
Filed:
November 29, 2000
Publication date:
May 30, 2002
Inventors:
Colvin W. Smith, John D. Lynn, Richard V. Fekete
Abstract: An improved iron ore sinter for use in a blast furnace is made from a raw sinter mix comprising: iron-bearing materials; basic fluxes including a source of CaO and a source of MgO; and solid carbon-bearing material usually coke breeze, used as a heat-generating combustible. To produce the sinter, the raw sinter mix is subjected to a sintering treatment at a high temperature in order to cause the iron-bearing materials, fluxes and carbon-bearing material to agglomerate and sinter by incipient fusion; an air-cooling treatment in order to produce a hard lumpy substance having a porous cellular structure; and a mechanical treatment to break the lumpy substance into a specific size range. The improvement to the above sinter lies in that the source of MgO in the raw sinter mix exclusively consists of synthetic olivine obtained by calcination of serpentinite.
Type:
Grant
Filed:
November 14, 1990
Date of Patent:
July 7, 1992
Assignee:
Ceram SNA Inc.
Inventors:
Sarat C. Panigrahy, Michel G. Rigaud, Pierre Legast
Abstract: The coring probe is constructed in the form of a tube (1) whose front part is capable of being disassembled into at least two parts (2,3), for example an upper element (2) which is fixed in use to a lower element (3) by members (4) and screws (6). This probe may be employed several times and consequently permits achieving a marked saving relative to known probes.
Type:
Grant
Filed:
March 18, 1991
Date of Patent:
June 9, 1992
Assignee:
Techmetal Promotion
Inventors:
Antoine Cervi, Andre Urvoy, Michel Helleisen, Gilbert Lanfrit, Herve Pierret