Title:
METHOD FOR SMELTING, REDUCING, ALLOYING AND TREATING STEEL
Document Type and Number:
WIPO Patent Application WO/2011/007261
Kind Code:
A3
Abstract:
The invention is used in the field of metallurgy, in particular, for smelting, reducing, alloying and treating steel. The method involves loading a feedstock and feeding pressurized natural gas and either air or oxygen from below to melt the feedstock using a gas and air or gas and oxygen torch. The natural gas and either air or oxygen are fed via a non-water-cooled gas and air or gas and oxygen injector in the form of two concentrically mounted pipes, which is situated in an opening in the nozzle of the ladle slide gate and is surrounded by dry refractory sand. The natural gas is fed through the outer pipe and the air or oxygen is fed through the inner pipe. The ladle furnace is covered with a lid that is provided with electrodes and the feedstock is additionally melted from the top by electric arcs. After the melting process, a primary slag is skimmed from the ladle furnace, fluxing reagents are added to produce a secondary slag and inert gases and slag-forming reagents are blown in from below, combining this process with boiling, reduction, alloying, deep desulphurization and dephosphorization and the homogenization of the chemical composition and temperature of the finished steel. The invention enhances the quality of the steel and lowers the production cost thereof.
Inventors:
KASHAKASHVILI GURAM (GE)
KASHAKASHVILI BENEDIKTE (GE)
KASHAKASHVILI IRAKLY (GE)
KASHAKASHVILI BENEDIKTE (GE)
KASHAKASHVILI IRAKLY (GE)
Application Number:
PCT/IB2010/002279
Publication Date:
April 21, 2011
Filing Date:
July 16, 2010
Export Citation:
Assignee:
KASHAKASHVILI GURAM (GE)
KASHAKASHVILI BENEDIKTE (GE)
KASHAKASHVILI IRAKLY (GE)
KASHAKASHVILI BENEDIKTE (GE)
KASHAKASHVILI IRAKLY (GE)
International Classes:
C22B9/00
Foreign References:
| RU2061056C1 | 1996-05-27 | |||
| RU2266337C1 | 2005-12-20 | |||
| RU62048U1 | 2007-03-27 | |||
| RU2197537C2 | 2003-01-27 |
Attorney, Agent or Firm:
GVARAMADZE, Shalva (Apt. 36 Tamarashvili Str. 13a,Tbilisi, 0194, Georgia, GE)
Download PDF:
Previous Patent: RFID LABEL SHEET
Next Patent: AUDIO RECOGNITION DURING VOICE SESSIONS TO PROVIDE ENHANCED USER INTERFACE FUNCTIONALITY
Next Patent: AUDIO RECOGNITION DURING VOICE SESSIONS TO PROVIDE ENHANCED USER INTERFACE FUNCTIONALITY