Magnesia carbon brick for vicinity of furnace door of electric arc furnace and preparation method of magnesia carbon brick
A magnesia-carbon brick and furnace door technology, applied in the field of magnesia-carbon brick processing, can solve the problems of poor performance of magnesia-carbon bricks, hidden dangers, and difficulty in gunning.
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Embodiment 1
[0040] A magnesia-carbon brick used near the door of an electric furnace consists of the following raw materials in parts by weight:
[0041] 20 parts of fused magnesia with 3mm≤particle size<5mm,
[0042] 25 parts of fused magnesia with 1mm≤particle size<3mm,
[0043] 20 parts of fused magnesia with 0.1mm≤particle size<1mm,
[0044] 16 parts of fused magnesia fine powder with particle size less than 0.088mm,
[0045] 12 parts of flake graphite with a particle size of 0.05mm,
[0046] 3 parts of phenolic resin binder,
[0047] The additive is 3 parts, and the additive is composed of titanium carbonitride, metal aluminum powder and carbon fiber with a mass ratio of 1:2:1, wherein the particle diameters of titanium carbonitride, metal aluminum powder and carbon fiber are all 325 mesh.
[0048] The magnesia carbon brick used near the electric furnace door is prepared by the following steps:
[0049] 1) Ingredients: Dry mix the additives evenly in the vibrating mill to make c...
Embodiment 2
[0056] A magnesia-carbon brick used near the door of an electric furnace consists of the following raw materials in parts by weight:
[0057] 22 parts of fused magnesia with 3mm≤particle size<5mm,
[0058] 30 parts of fused magnesia with 1mm≤particle size<3mm,
[0059] 18 parts of fused magnesia with 0.1mm≤particle size<1mm,
[0060] 16 parts of fused magnesia fine powder with particle size less than 0.088mm,
[0061] 14 parts of flaky graphite with a particle size of 0.05 mm,
[0062] 5 parts of additives, the additives are composed of titanium carbonitride, metal aluminum powder and carbon fiber with a mass ratio of 2:2:1, wherein the particle diameters of titanium carbonitride, metal aluminum powder and carbon fiber are all 325 mesh.
[0063] 2.5 parts of phenolic resin binder,
[0064] The magnesia carbon brick used near the electric furnace door is prepared by the following steps:
[0065] 1) Ingredients: Dry mix the additives evenly in the vibrating mill to make co-...
Embodiment 3
[0072] A magnesia-carbon brick used near the door of an electric furnace consists of the following raw materials in parts by weight:
[0073] 23 parts of fused magnesia with 3mm≤particle size<5mm,
[0074] 29 parts of fused magnesia with 1mm≤particle size<3mm,
[0075] 19 parts of fused magnesia with 0.1mm≤particle size<1mm,
[0076] 14 parts of fused magnesia fine powder with particle size less than 0.088mm,
[0077] 14 parts of flaky graphite with a particle size of 0.05 mm,
[0078] 6 parts of additive agent, the additive is composed of titanium carbonitride, metal aluminum powder and carbon fiber with a mass ratio of 2:2:2, wherein the particle diameters of titanium carbonitride, metal aluminum powder and carbon fiber are all 325 mesh.
[0079] 2.5 parts of phenolic resin binder,
[0080] The magnesia carbon brick used near the electric furnace door is prepared by the following steps:
[0081] 1) Ingredients: Dry mix the additives evenly in the vibrating mill to make ...
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