Tap hole integral pouring mud sleeve for blast furnace and manufacturing method thereof

Abstract

The invention relates to a tap hole integral pouring mud sleeve, which belongs to fittings for an ironmaking blast furnace tap hole and particularly relates to a mud sleeve for opening or blocking a tap hole. The mud sleeve is made of a refractory material arranged in a mud sleeve frame, and is characterized in that the refractory material is a pouring material and is compactly filled in the mud sleeve frame. The mud sleeve frame is a box-shaped body, and a consolidated hanger is arranged at the inner side of a frame plate; the rear end of the mud sleeve frame is connected with a blast furnace shell, a door frame is arranged at the front end of the mud sleeve frame, and a template is embedded in the door frame; a pouring hole is arranged at the upper side of the template, a module is fixed on the template and is opposite to the center of the tap hole, and an iron pipe provided with a tapping channel is arranged between the module and the tap hole; and compared with the prior art, the invention has the advantages that the tap hole mud sleeve is durable, the service life is markedly prolonged, the manufacturing workload of the mud sleeve is reduced, the usage quantity and the expense of the refractory material are saved, the gas leakage is reduced, and the cast house operation is safe; the operation under pressure can be carried out, thereby avoiding damping down due to the manufacture of the tap hole mud sleeve, ensuring the timely slag iron tapping of the blast furnace and ensuring blast furnace successful operation, energy saving, consumption reduction and yield increase.

Description

technical field [0001] The invention belongs to an accessory for a taphole of an ironmaking blast furnace, in particular to a mud sleeve for opening or blocking a taphole. Background technique [0002] The furnace shell at the taphole of the large blast furnace is provided with a taphole mud sleeve to open or block the taphole, so that the smelting production can proceed smoothly. At present, the iron mud jacket used is composed of refractory bricks and refractory castables built in the iron mud jacket frame. One side of the refractory brick is connected to the furnace shell, and the other end is connected to the refractory castable. This kind of iron mouth mud sleeve has many connection gaps and the pouring layer is thin, so it is difficult to make it under pressure. Its defect is that the iron mouth mud sleeve is subjected to rapid cooling and heat, chemical erosion and mechanical damage during use, and it is very easy to produce cracks or cracks, causing the iron mouth t...

AI Technical Summary

Problems solved by technology

This kind of iron mouth mud sleeve has many connection gaps and the pouring layer is thin, so it is difficult to make it under pressure.

Its defect is that the iron mouth mud sleeve is subjected to rapid cooling and heat, chemical erosion and mechanical damage during use, and it is very easy to produce cracks or cracks, causing the iron mouth to run and emit gas, and when the iron mouth is blocked, mud will be emitted, and the wind will be reduced and the wind will be blocked. Mouth; the service life of the iron hole mud sleeve is short, and it takes one to two months to stop the wind to remove the refractory materials and remake them, which consumes a lot of refractory materials and takes a long time, which not only affects the slag and iron treatment of the blast furnace, but also affects the stability of the blast furnace. ;Increase the labor intensity of the operators in front of the furnace, and the leaked gas also threatens the life safety of the operators

Images