Blast Furnace Taphole Frame Passage Gas Fire Pressing Material and Application Method
A technology for pressing materials and tapholes, which is applied in blast furnaces, blast furnace details, blast furnace parts, etc., and can solve the problems that the sputtering of tapholes is not completely controlled, the sputtering time has no obvious regularity, and the actual effect is not good. Eliminate the source of gas leakage from the taphole, eliminate design defects, and ensure the effect of normal production and operation
Active Publication Date: 2020-01-31
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology
The actual effect of these treatment methods is not good. After the taphole is opened, the splashing of the taphole is not completely controlled. There is still obvious splashing phenomenon in the early stage of tapping, and the splashing time has no obvious rules. Observing through the opening in front of the furnace, the taphole When the depth reaches about one meter, the gas leakage becomes significantly larger, that is to say, there is still an air gap between the contact surface of the carbon brick and the castable
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Embodiment Construction
[0032] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.
[0033] see Figure 1 to Figure 4 , the use method of blast furnace taphole frame channel gas fire pressing material of the present invention, it comprises the steps:
[0034] 1) According to the size of the iron mouth frame 50, make a grouting device of a suitable size, and prepare to press in the grout (resin-bonded carbon rubber);
[0035] 2) When the blast furnace is off, remove the mud sleeve until the surface of the iron hole permanent brick 20, remove the iron hole protection brick 30, clean the surface of the iron hole permanent brick 20, and clean the refractory materials that may exist in the iron hole channel 80 with a portable impact drill , blow with compressed air to ensure that the passage of the press-in hole is unblocked;
[0036] 3) The grouting device is installed on the 90 part of the iron mouth by welding, and the sealing plate is ...
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Abstract
The invention discloses a blast furnace iron notch frame channel gas fire pressing material and an application method. The gas fire pressing material comprises compositions including, by mass, 25%-30%of graphite carbon powder, 0.5%-1.5% of corundum, 24%-35% of silicon dioxide, 24%-35% of aluminum oxide, and 10.5%-14.5% of ethyl alcohol or methylbenzene diluent. The particle size of each solid component is 50-250. The pressing material can effectively close permanent brick and carbon smashing air gaps in iron notch areas to eliminate the iron notch gas leakage source so as to guarantee normalproduction operation of a blast furnace.
Description
technical field [0001] The invention relates to the field of blast furnace equipment, in particular to a blast furnace taphole frame channel gas fire pressing material and a use method for preventing blast furnace taphole gas leakage. Background technique [0002] The blast furnace taphole is the part where the blast furnace discharges the blast furnace product molten iron and by-product slag. Its structure is respectively a taphole mud jacket 10 and a taphole permanent brick 20 from outside to inside; around the taphole mud jacket 10 are respectively distributed taphole protection bricks 30 , Tiekou stave 40, Tiekou frame 50, Tiekou carbon brick 60, ramming material 70; figure 1 shown. [0003] During the blast furnace production process, due to the high pressure in the furnace and various other reasons, air gaps are formed between the iron mouth permanent bricks, and the high-pressure gas in the furnace passes through the air gaps to form a certain channel, bringing out a...
Claims
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IPC IPC(8): C21B7/06C21B7/14C04B35/66C04B35/10C04B35/14
CPCC04B35/10C04B35/14C04B35/66C04B2235/422C04B2235/425C04B2235/9669C21B7/06C21B7/14
Inventor 缪伟良费海清甘永青
Owner BAOSHAN IRON & STEEL CO LTD