Title:
STEELMAKING METHOD USING TWO OR MORE SETS OF CONVERTERS
Document Type and Number:
Japanese Patent JP3486886
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a steelmaking method using two or more sets of converters which dephosphorize-refine molten iron in one side of the converter and charge this molten iron into the other side of converter to execute decarburize-refining within the dephosphorize-refining time.
SOLUTION: (a) In one side of the converter, the molten iron having ≤0.3wt.% Si content in the molten iron is dephosphorize-refined in a prescribed time. (b) The dephosphorize-refined molten iron is charged into the other side of converter and the decarburize-refining is mainly executed substantially within the above prescribed time. Further, in the converter executing the dephosphorize- refining, the whole quantity of scrap can be charged. In the converter executing the decarburize-refining, previous to charge of the dephosphorize-refined molten iron, slag-making agent containing MgO is charged into the converter, and MgO concn. of the produced slag is made to 10wt.%, and after tapping the decarburize-refined molten steel, the slag-coating is executed.
Inventors:
Kimi Komatsu
Shuei Tanaka
Satoshi Kodaira
Shuei Tanaka
Satoshi Kodaira
Application Number:
JP6738797A
Publication Date:
January 13, 2004
Filing Date:
March 05, 1997
Export Citation:
Assignee:
JFE Steel Corporation
International Classes:
C21C5/28; C21C1/02; (IPC1-7): C21C5/28; C21C1/02
Domestic Patent References:
| JP10245617A | ||||
| JP10306305A | ||||
| JP586412A | ||||
| JP641624A | ||||
| JP10306306A | ||||
| JP59104417A |
Attorney, Agent or Firm:
Kawawa Takaho
Previous Patent: MANUFACTURE OF WOODY DECORATIVE PLATE
Next Patent: STEELMAKING METHOD USING PLURAL CONVERTERS
Next Patent: STEELMAKING METHOD USING PLURAL CONVERTERS