Ceramic heat exchanger, composite ceramic material and production method thereof
A technology of ceramic materials and production methods, applied in the field of refractory materials and heat exchangers, can solve the problems of lowering the temperature recovered by the heat exchanger, cannot be used directly, and low energy utilization rate, and achieves fuel saving, strong applicability, and production. Method Mature Effect
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[0044] Example 1: Ceramic material and its production method
[0045] The production process steps include raw material selection and preparation, ball milling, filtration, mixing, mud smelting, staleness, scouring, extrusion molding, drying, sintering, finished product inspection, assembly and storage. The detailed steps are:
[0046] 1. Weigh mullite powder, cordierite powder, talc powder, clay powder, α-Al 2 O 3 As the matrix material component A, the weight percentages of various components in the matrix material are: 20% mullite powder, 40% cordierite powder, 10% talc powder, 10% clay powder, α-Al 2 O 3 20%;
[0047] Weigh mullite and cordierite as aggregate component B. The weight percentage of these two components in the aggregate is 16% for mullite with a particle size of 0~0.5mm, and 36 for mullite with a particle size of 0.5~1mm. %, the cordierite with a particle size of 0 to 0.5 mm is 34%, and the cordierite with a particle size of 0.5 to 1 mm is 14%. The weight ratio o...
Example Embodiment
[0056] The second embodiment: the ceramic material and its production method are basically the same as the first embodiment, and the similarities will not be described again. The differences are:
[0057] 1. Matrix material component A, mullite powder 40%, cordierite powder 20%, talc powder 20%, clay powder 10%, α-Al 2 O 3 The 10% matrix material has a particle size of 220 mesh.
[0058] In aggregate component B, mullite with a particle size of 0~0.5mm is 36%, mullite with a particle size of 0.5-1mm is 16%, cordierite with a particle size of 0~0.5mm is 14%, and cordierite with a particle size of 0.5-1mm Is 34%. The weight ratio of the two components A and B is 1:1, and 1% of the total weight of the two components A and B is added with a binding agent.
[0059] 2. Measure and weigh according to the formula of the matrix material, add water (the weight ratio of water to the matrix material is 1:3), and send it to a wet ball mill for grinding for 10-12 hours. The particle size after ...
Example Embodiment
[0062] The third embodiment: the ceramic material and its production method are basically the same as the first embodiment, and the similarities will not be described again. The differences are:
[0063] 1. Matrix material component A: 25% mullite powder, 25% cordierite powder, 30% talc powder, 10% clay powder, α-Al 2 O 3 10%;
[0064] In aggregate component B, mullite with a particle size of 0~0.5mm is 20%, mullite with a particle size of 0.5-1mm is 20%, cordierite with a particle size of 0~0.5mm is 30%, and cordierite with a particle size of 0.5-1mm Is 30%.
[0065] The weight ratio of the two components A and B is 1:1.5, and 0.8% of the total weight of the two components A and B is added with a binding agent.
[0066] 2. During sintering, the temperature is controlled at 1350℃, and it is sintered according to the conventional racking for 40h, keeping the temperature for 5h, and cooling to below 500℃ and out of the furnace.
[0067] Sintering temperature rise requirements, the t...
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