Nanocarbon reinforced low-carbon magnesia carbon brick and preparation method thereof
A carbon-magnesia-carbon brick and nano-carbon technology, which is applied in the field of refractory materials, can solve problems such as high carbon content, sintering performance of magnesia-carbon bricks, reduced thermal shock resistance of oxidation resistance, and insufficient performance of low-carbon magnesia-carbon bricks, etc., to achieve reduction Effects of porosity, raw material cost saving, and total carbon reduction
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Embodiment 1
[0026] The low-carbon magnesia-carbon brick reinforced by nano-carbon of this embodiment has a mass ratio of raw materials: magnesia 90% (magnesia particles 60%, magnesia fine powder 30%), nano-carbon black 2.5%, antioxidant aluminum powder (purity≥98%, particle size≤100μm) 3.5%, phenolic resin 4%.
[0027] Its preparation method is carried out according to the following steps:
[0028] (1) Ingredients by mass ratio: magnesia 90% (magnesia particles 60%, magnesia fine powder 30%), nano-carbon black 2.5%, antioxidant aluminum powder (purity ≥ 98%, particle size ≤ 100 μm) 3.5%, 4% phenolic resin configuration raw material;
[0029] (2) Mixing: Mixing in the following order: magnesia particles are ground and mixed for 2 minutes, then nano-graphite oxide flakes and aluminum powder are mixed for 5 minutes, then phenolic resin is mixed for 5 minutes, and finally magnesia fine powder is mixed for 10 minutes;
[0030] (3) Compression molding and drying: the uniformly ground raw mate...
Embodiment 2
[0033] The low-carbon magnesia-carbon brick reinforced by nano-carbon of the present embodiment has a mass ratio of raw materials: magnesia 90% (magnesia particle 65%, magnesia fine powder 25%), nano-carbon black 3.5%, antioxidant silicon powder (purity≥98%, particle size≤100μm) 2.5%, phenolic resin 4%.
[0034] Its preparation method is carried out according to the following steps:
[0035] (1) Ingredients by mass ratio: magnesia 90% (magnesia particles 65%, magnesia fine powder 25%), nano-carbon black 3.5%, antioxidant silicon powder (purity ≥ 98%, particle size ≤ 100 μm) 2.5%, 4% phenolic resin configuration raw material;
[0036] (2) Mixing: Grind and mix magnesia particles for 2 minutes, add nano-carbon black and silicon powder for 5 minutes, add phenolic resin for 5 minutes, and finally add magnesia fine powder and mix for 10 minutes;
[0037] (3) Compression molding and drying: the uniformly ground raw materials are pressed into 200mm×50mm×50mm square bricks with an e...
Embodiment 3
[0040] The low-carbon magnesia-carbon brick reinforced by nano-carbon of the present embodiment has a mass ratio of raw materials: magnesia 90% (magnesia particles 60%, magnesia fine powder 30%), carbon nanotubes 2%, nano-carbon black 1 %, antioxidant aluminum powder (purity ≥ 98%, particle size ≤ 100 μm) 3%, phenolic resin 4%.
[0041] Its preparation method is carried out according to the following steps:
[0042] (1) Ingredients by mass ratio: magnesia 90% (magnesia particles 60%, magnesia fine powder 30%), carbon nanotubes 2%, nano carbon black 1%, antioxidant aluminum powder (purity ≥ 98%, particle size ≤100μm) 3%, phenolic resin 4% configuration raw materials;
[0043] (2) Mixing: Grind and mix magnesia particles for 2 minutes, then add carbon nanotubes, nano-carbon black, and aluminum powder for 5 minutes, then add phenolic resin for 5 minutes, and finally add magnesia fine powder for 10 minutes;
[0044] (3) Compression molding and drying:. The uniformly ground raw ...
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