Tundish flow control device for slab casting machine, preparation method thereof and slagging method using tundish flow control device

A slab continuous casting machine and tundish technology, applied in casting equipment, mechanical cleaning, manufacturing tools, etc., can solve the problems of prolonging the residence time of molten steel, increasing the amount of tundish injection, and unable to discharge steel slag regularly.

CN102744393AActive Publication Date: 2012-10-24LAIWU IRON & STEEL GRP

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: LAIWU IRON & STEEL GRP
Publication Date: 2012-10-24

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Abstract

The invention relates to a tundish flow control device for a slab casting machine, a preparation method of the tundish flow control device and a slagging method using the tundish flow control device, and belongs to the technical field of the ferrous metallurgy slab casting tundish technology. The tundish flow control device for the slab casting machine comprises a turbulence controller, a slag blockage weir and a slag blockage dam, and is characterized in that the upper edge of the slag blockage weir (5) is higher than the highest liquid level (10) of molten steel normally poured by the tundish, but is lower than the working face of tundish overflow port coating (1); the slag blockage weir (5) and the slag blockage dam (6) are vertically staggered; two ends of the slag blockage dam (6) are respectively provided with a through hole; a center distance a between the slag blockage weir (5) and the turbulence controller (4) is 400-600mm; and a center distance b between the slag blockage weir (5) and the slag blockage dam (6) is 300-400mm. After the tundish flow control device for the slab casting machine is adopted, slab tundish injection residue can be reduced by more than 25%, the service life of the flow control device is improved by one time and is above 14 hours, and the production cost of continuous casting refractory material is lowered by more than 30%.

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Description

technical field

[0001] The invention relates to a flow control device for a tundish of a slab continuous casting machine, a preparation method thereof and a method for discharging slag using the same, and belongs to the technical field of iron and steel metallurgy slab continuous casting tundish technology. Background technique

[0002] A flow control device is installed in the tundish of the slab continuous casting machine to change the running route of molten steel, prolong the residence time of molten steel in the tundish, and has the metallurgical function of promoting the floating and removal of inclusions, reducing inclusions inside the slab, and changing the shape of inclusions . The flow control device is generally composed of a turbulence controller, a slag retaining weir, and a slag retaining dam. At present, after the flow control device is installed in the tundish of the slab continuous casting machine, there are new technical problems: (1) The slag retaining we...

Claims

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