Combined brick and preparation method thereof
A technology for combining bricks and adobes, applied in the field of refractory materials, can solve problems such as uneven structure, high apparent porosity, and low compactness
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[0038] The present invention also provides the preparation method of described combined brick, comprises the following steps:
[0039] Carry out overall modeling according to the size of the combined brick, and obtain the master mold of each single brick of the combined brick;
[0040] 32wt%~66wt% mullite, 10wt%~30wt% andalusite, 1wt%~5wt% magnesium aluminum spinel, 5wt%~15wt% cordierite, 10wt%~30wt% platy corundum Mix and grind with 2wt% ~ 6wt% silica powder to obtain a premix;
[0041] After the premix is vacuum stirred, it is poured into each single brick mother mold of the combined brick and centrifugally formed to obtain a single brick adobe;
[0042] The single brick adobe is fired to obtain a fired single brick adobe, the fired single brick adobe is cut and ground into a single brick, and the single brick adobe is combined to obtain a combined brick.
[0043] As is well known to those skilled in the art, the shape of the composite brick is not fixed, and it needs to...
Embodiment 1
[0052] The overall design of the composite brick is carried out according to the design size of the combustion port, that is, the overall shape is carried out according to the Chinese patent No. 87102012.2, and the master mold of each single brick of the composite brick is obtained;
[0053] Put 20kg of silica micropowder with a particle size of 2-5μm, 20kg of mullite raw meal powder with a particle size of 180 mesh, 1kg of a water reducer with a particle size of 100 mesh, and 30kg of water into a slurry in a ball mill to obtain a premixed slurry; 150kg of sintered mullite with a particle size of 8-5mm, 60kg of sintered mullite with a particle size of 5-3mm, 50kg of andalusite with a particle size of 3-1mm, 35kg of andalusite with a particle size of 1-0mm, and neutral cordierite with a particle size of 1.25-0mm Add 50kg and 10kg of magnesia-aluminum spinel with a particle size of 1-0mm into the 800 forced sand mixer, dry mix for 2 minutes, add the above premixed mud and mix for...
Embodiment 2
[0057] The overall design of the composite brick is carried out according to the design size of the combustion port, that is, the overall shape is carried out according to the Chinese patent No. 87102012.2, and the master mold of each single brick of the composite brick is obtained;
[0058] Put 20kg of silica micropowder with a particle size of 2-5μm, 20kg of mullite raw meal powder with a particle size of 180 mesh, 0.75kg of a water reducer with a particle size of 100 mesh, and 27.5kg of water into a slurry in a ball mill to obtain a premixed Slurry; 150kg of sintered mullite with a particle size of 8-5mm, 60kg of sintered mullite with a particle size of 5-3mm, 35kg of sintered mullite with a particle size of 3-1mm, 15kg of andalusite with a particle size of 3-1mm, 35kg of andalusite with a particle size of 1-0mm, Add 40kg of neutral cordierite with a particle size of 1.25-0mm and 25kg of magnesium-aluminum spinel with a particle size of 1-0mm into an 800 forced sand mixer, d...
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