Low density converter steel tapping slag bridge

Abstract

The low density slag stopper for converter tapping is made of common refractory material in revolution body shaped, has cavities with vent hole communicated with the upper surface of the slag stopper and apparent density of 1.5-2.8 g / cu cm. The low density slag stopper for converter tapping has simple structure, no need of balancing iron block, easy use, good slag stopping effect and high steel tapping efficiency.

Description

technical field [0001] The invention relates to a slag retaining device for a converter steel tapping hole in a converter steelmaking equipment, in particular to a low-density converter tapping slag retainer. Background technique [0002] At present, in the process of converter steelmaking, it has become an indispensable measure to use a slag stopper at the outlet of the converter. Sulfur back to phosphorus, thereby increasing the yield of the alloy. Traditional slag stoppers have simple structures such as slag balls, slag plugs, slag sticks, and slag labels, and there are also pneumatic slag stop devices with more complex structures. Except for a small number of iron and steel enterprises using pneumatic slag retaining devices, most domestic and foreign iron and steel enterprises are still using slag retaining devices with simple structures such as slag retaining balls and slag retaining plugs. For this kind of slag stopper, whether it is in textbooks or in steelmaking en...

AI Technical Summary

Problems solved by technology

And the adding device of the slag stopper is a very heavy and large-scale equipment, so it is difficult for the operator to add the slag stopper at the exact time, so that the effect of the slag stopper is greatly reduced

[0006] In addition, the density of ordinary refractory materials is difficult to reach 4.5g / cm 3 Therefore, iron blocks or other metal materials are added to ordinary refractory materials to counterweight when manufacturing traditional slag stoppers, but these metal materials have different expansion coefficients from ordinary refractory materials. will damage the slag stopper

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