Manufacture method of mud for blast furnace mud sleeve for replacing common cement

Abstract

The invention provides a manufacture method of mud for a blast furnace mud sleeve for replacing common cement. The manufacture method adopts the following raw materials in parts by weight: 30 to 36 parts of clay, 10 to 15 parts of fine silicon carbide, 5 parts of asphalt powder, 5 to 7 parts of kyanite, 15 parts of coarse brown fused alumina, 27 parts of fine brown fused alumina, and 10 to 14 parts of tap water. The manufacture method comprises the following steps: sequentially adding the raw materials into a mud mill; stirring; adding the tap water; milling to obtain the slurry of the mud sleeve; then ageing the mud at normal temperature so as to obtain the ingredients of the mud for the mud sleeve; and then manufacturing the mud sleeve, wherein an iron notch mud sleeve of a blast furnace body is cleaned at the cleaning depth of 50 to 100mm; during manufacturing of the mud sleeve, a port of an iron-port mud gun is tightly matched with a working surface of the mud sleeve, after the mud for the mud sleeve is filled on the mud sleeve and then is compacted, the mud gun port of a mud gun machine is aligned with the mud sleeve for compacting the mud, and then the mud gun machine is removed, a steel chisel is adopted and used for forming the diameter of a channel in the center of the iron port in a draw-out way, the mud sleeve is baked by the fire under the gas, and thus the mud sleeve can be obtained; when the mud is to be used, the hole in the iron port is drilled by an opening machine in front of the furnace, and the scrap irons in slag are completely discharged from the hole in the iron port; and then the mud gun port is compressed on the iron-port mud sleeve under the effect of a mud gun hydraulic cylinder.

Description

technical field [0001] The invention relates to the manufacture of a blast furnace taphole sheath, especially by improving the formula of the blast furnace sheath mud, realizing a method for making a blast furnace taphole sheath instead of cement, and fully exerting the independent innovation ability of the enterprise. Background technique [0002] With the continuous strengthening of blast furnace smelting, the quality requirements for the blast furnace taphole are getting higher and higher. To make the taphole work in a stable state and meet the needs of blast furnace intensified smelting, it is necessary to increase the taphole index; and affect the taphole index. The key factor is whether the plugging gun mud can be completely driven into the channel of the iron hole to ensure the various working indicators of the iron hole. The conventional blast furnace mud jacket is made of ordinary cement and extruded with a mud gun. In the process, due to the damage of the mud jacke...

AI Technical Summary

Problems solved by technology

[0002] With the continuous strengthening of blast furnace smelting, the quality requirements for the blast furnace taphole are getting higher and higher. To make the taphole work in a stable state and meet the needs of blast furnace intensified smelting, it is necessary to increase the taphole index; and affect the taphole index. The key factor is whether the plugging gun mud can be completely driven into the channel of the iron hole to ensure the various working indicators of the iron hole. The conventional blast furnace mud jacket is made of ordinary cement and extruded with a mud gun. In the process, due to the damage of the mud jacket, vicious accidents such as the blast furnace being forced to reduce the wind, and even pulling the wind to block the mouth often occur. The main reason for the analysis is that the mud material performance of the mud jacket made in the early stage cannot meet the requirements of the mud jacket. Improving the ingredients is the key to solving the above problems

[0003] At present, ordinary cement is still used to make the mud jacket of 430 blast furnace, and it is extruded with a mud gun; with ordinary cement and a large amount of coke powder, the quality of the mud jacket still cannot meet the process requirements, and there are still problems caused by mud during use. The cover is damaged, the blast furnace is forced to reduce the wind, or even pull the wind to block the mouth and other vicious accidents. Due to the short life of the mud cover and frequent production, the labor intensity of the employees increases, and the safety cannot be guaranteed.

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