Continuous-casting tundish comprehensive permanent liner and preparation method thereof
A continuous casting tundish and tundish technology are applied in the field of iron and steel metallurgy continuous casting tundish refractory materials, which can solve the problems of complex process and high production cost, and achieve the effects of improving safety and reliability and reducing repair labor intensity.
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Embodiment 1
[0044] Such as figure 1 As shown, a continuous casting tundish comprehensive permanent lining, the longitudinal section of the tundish comprehensive permanent lining is "U" shape, the cross section is rectangular, the tundish comprehensive permanent lining includes from top to bottom: slag line (2), cladding wall (3) and the bottom of the bag (4), the molten pool parts, that is, the bottom 4 and the wall 3 below the slag line, use high-alumina castables, the thickness a of the bottom 4 castables is 150mm, and the slag line 2 is made of For the corundum castable, the slag line 2 and the cladding wall 3 below the slag line have the same thickness, b is 120 mm, and the height H of the slag line is 400 mm.
[0045] The high-alumina castable used for the comprehensive permanent lining of the continuous casting tundish for the bottom 4 and the wall 3 below the slag line is composed of the following materials in percentage by weight: first-grade high-alumina bauxite 30 with a particl...
Embodiment 2
[0062] Others are the same as embodiment 1, the difference is:
[0063] The longitudinal section of the comprehensive permanent lining of the tundish is "U"-shaped, and the transverse section is "T"-shaped. The thickness a of the permanent lining bottom 4 castable is 180mm, and the thickness of the slag line 2 and the cladding wall 3 below the slag line is the same, both are b is 150mm, and the height H of the slag line is 300mm.
[0064] The high alumina castable used for the comprehensive permanent lining of the continuous casting tundish bottom 4 and the cladding wall 3 below the slag line is composed of the following materials in percentage by weight: first-grade high alumina bauxite 25 with a particle size of 5mm≤10mm %, 15% of the first grade high bauxite with 3mm≤particle size2 o 3 Micropowder 1.3%, silicon micropowder 1.0%, sodium tripolyphosphate 0.2%, pure calcium aluminate cement 4.0%, heat-resistant steel fiber 0.5%, all are percentages by weight.
[0065]The cor...
Embodiment 3
[0080] Others are the same as embodiment 1, the difference is:
[0081] Such as figure 1 As shown, a comprehensive permanent lining of a continuous casting tundish, the thickness a of the pouring material at the bottom 4 of the tundish is 120 mm, and the slag line 2 is made of corundum castable material, and the thickness of the slag line 2 and the wall 3 below the slag line are the same, both b is 100mm, and the height H of the slag line is 350mm.
[0082] The preparation method of the comprehensive permanent lining of the continuous casting tundish comprises the following steps:
[0083] 1) Preparation of castables: Material preparation of high-alumina castables and corundum castables required for the comprehensive permanent lining of continuous casting tundish: weigh the above-mentioned materials according to the stated ratio, add them into the mixer and stir well, dry Mix for 7 minutes, stir evenly, and pack into bags for later use.
[0084] 2) Preparation of the tundis...
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Abstract
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