Patents by Inventor Reza Husain

Reza Husain has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process and apparatus for a direct reduction of iron oxide containing materials to form Fe.sub.3 C
    Patent number: 5603748
    Abstract: In order to effect a reduction and a carburization to form Fe.sub.3 C to the highest possible degree in a relatively short time in an economical process, a treatment in two stages is effected in fluidized beds. The first stage is effected in a circulating fluidized bed system, in which the amount of solids circulated per hour is at least five times the weight of solids contained in the fluidized bed reactor and a major part of the iron content of the charge is pre-reduced. The remaining reduction and the partial or complete conversion to Fe.sub.3 C are effected in the second stage in a conventional fluidized bed. Water is condensed from the exhaust gas from the circulating fluidized bed system and that gas is strengthened by an addition of reducing gases and is reheated to the temperature which is required for the process.
    Type: Grant
    Filed: April 18, 1996
    Date of Patent: February 18, 1997
    Assignee: Lurgi Metallurgie GmbH
    Inventors: Martin Hirsch, Reza Husain, Alpaydin Saatci, Wolfgang Bresser
  • Process for a direct reduction of iron oxide containing materials to form Fe.sub.3 C
    Patent number: 5527379
    Abstract: In order to effect a reduction and a carburization to form Fe.sub.3 C to the highest possible degree in a relatively short time in an economical process, a treatment in two stages is effected in fluidized beds. The first stage is effected in a circulating fluidized bed system, in which the amount of solids circulated per hour is at least five times the weight of solids contained in the fluidized bed reactor and a major part of the iron content of the charge is pre-reduced. The remaining reduction and the partial or complete conversion to Fe.sub.3 C are effected in the second stage in a conventional fluidized bed. Water is condensed from the exhaust gas from the circulating fluidized bed system and that gas is strengthened by an addition of reducing gases and is reheated to the temperature which is required for the process.
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: June 18, 1996
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventors: Martin Hirsch, Reza Husain, Alpaydin Saatci, Wolfgang Bresser