Pouring material and single-iron notch blast furnace iron storage type tapping main channel using same

Abstract

The invention discloses a pouring material and a single-iron notch blast furnace iron storage type tapping main channel using the same; the single-iron notch blast furnace iron storage type tapping main channel comprises a steel mould, a brick layer and the pouring material, wherein the brick layer is laid at the inner side of the steel mould; and the pouring material is poured at the inner side of the brick layer. The single-iron notch blast furnace iron storage type tapping main channel is characterized in that a channel is arranged at the inner side of the pouring material, so that the width of the channel is gradually increased from front to back. According to the invention, the scouring force of molten iron for the main channel can be reduced, the labor intensity of workers pushing slag can be reduced, and the front half part and rear half part of the main channel can be repaired synchronously, so that the waste can be avoided. The repairing material can be saved by about 40-50 tons every year, so that the cost is greatly saved; and about 10 ton of material can be saved for a new main channel which is poured for the first time after the structural design is improved, so that the material cost is greatly saved, the annual total cost is greatly saved, and the economic benefit is greatly improved.

Description

【Technical field】 [0001] The invention relates to the field of refractory materials for blast furnace ironmaking, in particular to the improvement of the structure and formula of a single-taphole blast furnace iron storage type tapping main ditch castable. 【Background technique】 [0002] At present, more than half of my country's steel production still comes from 1000m 3 The following blast furnaces, quite a few of which are single-taphole blast furnaces, have relatively limited application of the tapping troughs of this type of blast furnaces in terms of mature and advanced integral pouring materials and repair techniques for multi-taphole blast furnaces because there is no spare main ditch. This puts forward higher requirements on the performance of the castable of the tapping main channel. [0003] At present, the integral pouring construction technology mainly adopted in the main ditch of iron storage type tapping for single taphole blast furnace is: first place a prefa...

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