Melting method of converter, and facility for implementing the method

A converter and equipment technology, applied in non-ferrous metal smelting, ferroalloy production, and ferrous metal fields, can solve the problems of constant frequency value, negligible stirring effect, and not too good effect, etc.

CN101050478AInactive Publication Date: 2007-10-10YINGKOU DSMK TECH DEV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2007-10-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention relates to method and apparatus for smelting ferrous metals, nonferrous metals and iron alloys in converter. The method provides DC to the converter to construct spacial magnetic field in the converter. The DC is pre-adjusted before applied to the converter so that the melt in the converter moves from the edge to the center of the converter. During converter smelting process, iron-containing raw material 1-40 kg / ton steel is added into the converter. The iron-containing raw material is selected from iron ore, oxide scale, pellet or other iron-containing raw materials. A supplementary magnetic field contrary to the direction of the ascending gas flow in the converter is formed by the contact electrode at the top of the converter. The apparatus comprises: a converter with refractory lining, an injection oxygen lance in the converter, a solenoidal coil in the lining, a DC generator, and a modulation signal generator.
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Description

technical field

[0001] The invention belongs to the fields of smelting of ferrous metals and nonferrous metals and ferroalloy production, and in particular relates to a converter smelting method and equipment for implementing the method. Background technique

[0002] Ogurtsov A.N., Gles A.B. Continuous Casting of Steel - Dnepropetrovsk: Systematic Technology, 2002. - Page 675 - [Document 1] discloses the use of electromagnetic fields in continuous casting for crystallization tanks A method of axially stirring the inner metal, the purpose of which is to contain the rapid downward flow introduced by the middle ladle jet. For the subject that needs to strengthen the melt movement in the converter, the disadvantage of this method is that the melt movement caused by this method is opposite to the melt movement caused by the blowing air flow. The movement caused by the blowing air flow, according to Yawoyski B.N. The theory of steel production process—M.: Metallurgy, 1967—792 pag...

Examples

Embodiment Construction

[0036]As shown in Figures 1 and 2, a converter smelting method is to establish a space magnetic field in the converter; provide the basic power required to establish the space magnetic field as direct current; pre-modulate the direct current before it acts on the space magnetic field forming end, To make the melt in the converter move from the periphery to the center. In actual operation, the solenoid coil fitted in the converter can be used to form a converter space magnetic field; the basic power supply for the solenoid coil is direct current; before the direct current is sent to the solenoid coil, it is pre-modulated, To make the melt in the converter move from the periphery to the center. In the invention, during the smelting process of the converter, iron-containing materials of 1-40 kg / ton of steel are added to the converter. The above-mentioned iron-containing material is ore, iron oxide scale, sintered ore, pellet ore or a mixture thereof. The present invention can a...