Patents by Inventor Genrikh Alekseevich Dorofeev

Genrikh Alekseevich Dorofeev 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).

  • Patent number: 10337077
    Abstract: A method of producing steel by charging a furnace with scrap metal and agglomerated oxy-carbon material into a workspace of a furnace, to reduce specific electricity consumption when melting. Increasing the iron output quantity by inputting electric energy, fuel, a carburizer, a flux and gaseous oxygen, using electric arc melting with decarburization of a metal bath, and releasing metal and slag from the furnace. Prior to melting, a portion of the material is loaded with a first portion of the metal charge into the central zone of the furnace, and the remaining material into the melted charge during melting 0.5-10 kg/min per 1 megavolt-ampere of electric arc transformer power. The oxy-carbon material size is between 5 and 80 millimeters.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: July 2, 2019
    Inventor: Genrikh Alekseevich Dorofeev
  • Publication number: 20180305778
    Abstract: The invention relates to the field of metallurgy, and specifically to a method for producing steel in an electric arc furnace. A known method for making steel in an electric arc furnace includes, at least, loading, into the working space of a furnace, a solid metal charge and, at least, solid carbon-containing materials, melting the charge using electric arcs, carburizing the metal using the solid carbon-containing materials during melting, and outputting metal and slag from the furnace. It is proposed to conduct the melting process with the addition, to the working space of the furnace, of a high-carbon carburizer in the form of a liquid phase of iron recovered from the arc combustion zone for the additional carburization of the metal, wherein the high-carbon carburizer is obtained from iron oxides and carbonaceous material.
    Type: Application
    Filed: July 25, 2016
    Publication date: October 25, 2018
    Inventors: Genrikh Alekseevich DOROFEEV, Pavel Rudolfovich YANTOVSKY, Konstantin Gennadievich SMIRNOV
  • Publication number: 20160333430
    Abstract: The inventions relate to the field of metallurgy, and specifically to a method for producing steel and to a design for an electric arc furnace for implementing same. The method involves loading a charge into a workspace of a furnace, said charge consisting of scrap metal and of agglomerated oxy-carbon materials, inputting electric energy, fuel, a carburizer, a flux and gaseous oxygen, heating and melting the charge using electric arcs with the decarburization of a metal bath, and releasing metal and slag from the furnace. Prior to melting, a portion of the oxy-carbon materials is loaded, simultaneously with a first portion of metal charge, into the central zone of the furnace, and the remaining oxy-carbon materials are introduced into the melted charge during the melting process at a specific loading speed of 0.5-10 kg/min per 1 megavolt-ampere of power of the transformer of the electric arc furnace, and the size of the pieces of oxy-carbon materials is selected to be between 5 and 80 millimeters.
    Type: Application
    Filed: December 30, 2013
    Publication date: November 17, 2016
    Inventor: Genrikh Alekseevich DOROFEEV
  • Patent number: 5752561
    Abstract: In the production of a metal charge for steelmaking in arc furnaces, a method for producing a low density intermediate charging stock by prefilling the ingot molds of a casting machine with a substance that releases gas at a temperature below the temperature of the charged pig iron, such as limestone, dolomite or caprolactam.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: May 19, 1998
    Assignee: Intermet-Service & Co.
    Inventors: Genrikh Alekseevich Dorofeev, Aleksandr Vladimirovich Makurov, Anatolii Georgievich Sitnov, Aleksandr Nikolaevich Panfilov, Eduard Emmanuilovich Minikes, Nikolai Ivanovich Yurin, Arkadii Nikolaevich Ponomarev, Yevgenii Nektar'Veich Ivashina, Gennadii Pavlovich Zuev
  • Patent number: 5738704
    Abstract: An improved charging stock for steel production which facilitates earlier and more uniform carbon oxidation, and increases the rate of oxygen transport in the melt, comprises and iron-carbon alloy having silicon therein and an oxide-containing material. The iron-carbon alloy preferably has a ratio of carbon to silicon in the range of approximately 4-40:1. The ratio of oxide-containing material surface area to the weight of the iron-carbon alloy is preferably maintained in the range of 5-100 m.sup.2 /ton.
    Type: Grant
    Filed: January 18, 1996
    Date of Patent: April 14, 1998
    Assignee: Intermet-Service and Company
    Inventors: Genrikh Alekseevich Dorofeev, Serafim Zakharovich Afonin, Anatolii Georgievich Sitnov
  • Patent number: 5725631
    Abstract: A composite charge for metallurgical processing which reduces the content of non-metallic inclusions in the end product(s) comprises 40-83 wt. % of a metallic agent, 17-50 wt. % of an oxide agent and 0.1-10.0 wt. % of a carbonaceous agent. The carbonaceous agent includes a mixture of metal carbides and free carbon, preferably graphite, having a ratio in the range of 0.1-10.0:1.
    Type: Grant
    Filed: January 18, 1996
    Date of Patent: March 10, 1998
    Assignee: Intermet-Service & Company
    Inventors: Genrikh Alekseevich Dorofeev, Serafim Zakharovich Afonin, Aleksandr Vladimirovich Makurov, Anatolii Georgievich Sitnov