Far infrared ceramic beads capable of being heated by microwave under normal temperature and method for manufacturing same
A far-infrared ceramic and microwave heating technology, applied in the field of far-infrared ceramic balls, can solve the problems of reduced far-infrared emissivity, poor contact feeling, skin irritation, etc., achieve good rolling and contact feeling, improve emission efficiency, Good warmth effect
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Embodiment 1
[0041] Will Al 2 O 3 , MgO, SiO 2 The mass fractions are 34%, 16%, and 50%, and the mixture is uniformly mixed and calcined at 1400°C for 5 hours. MnO oxide 2 , Fe 2 O 3 , With mass fraction: 60%, 40% mixed and calcined at 1200°C for 10 hours in a reducing atmosphere. Combine the first two calcined products with TiO 2 , ZrO 2 , SiC, mixed with mass fraction: 60%, 20%, 1%, 2%, 17%, grind and crush to D95≤1.0μm. Use ceramic colloidal injection molding technology (as described in Chinese Patent ZL 02125221) to make ceramic pellets with a diameter of 1.5-2.0mm, and dry them at 160°C for 4 hours, and heat the dried pellets at 1470°C After sintering for 6 hours, centrifugal polishing is used after sintering into porcelain, so that the surface roughness of the ceramic balls is less than or equal to 20 μm, and the ceramic balls of the present invention can be obtained. In addition, the ceramic ball can be used to make a health belt. The ceramic balls are tightly packed in a long stri...
Embodiment 2
[0043] Will Al 2 O 3 : 36%, MgO: 17%, SiO 2 : 47% (mass fraction) mixed uniformly, heat preservation and calcination at 1400°C for 5 hours. MnO 2 , Fe 2 O 3 , The mass fraction: 55%, 45%, mixed and calcined in a reducing atmosphere at 1200°C for 10 hours. Combine the two calcined products with TiO 2 , ZrO 2 SiC, mixed with mass fraction: 58%, 23%, 1%, 2%, 16%, grind and pulverize to D95≤1.0μm. The ceramic ball rolling molding technology is used to make ceramic small spheres with a diameter of 2.0-3.0mm. They are dried at 160℃ for 4 hours. The dried green spheres are kept at 1450℃ for 10 hours. After sintering into porcelain, centrifuge Polishing to make the surface roughness Ra≤20μm, the ceramic pellets of the present invention can be obtained. It is heated in a microwave oven for 1 minute, the temperature can reach 40 DEG C, and the normal total radiation emissivity can reach more than 88% in the range of 2-18 μm. The far-infrared ceramic ball is used to make a hot compress ...
Embodiment 3
[0045] Will Al 2 O 3 : 30%, MgO: 15%, SiO 2 : 55% (mass fraction) mixed uniformly, calcined at 1400°C for 5 hours. MnO 2 , Fe 2 O 3 , After mixing with mass fraction: 65% and 35%, heat preservation and calcination at 1200°C for 10 hours in a reducing atmosphere. Combine the two calcined products with TiO 2 , ZrO 2 SiC, mixed with mass fraction: 63%, 17%, 1%, 2%, 17%, ground and pulverized to D95≤1.0μm. The ceramic ball rolling molding technology is used to make ceramic small spheres with a diameter of 2.0-3.0mm. They are dried at 180°C for 3 hours, and the dried green balls are kept at 1480°C for 5 hours. After sintering into porcelain, centrifugation is used Polishing to make the surface roughness Ra≤20μm, the ceramic pellets of the present invention can be obtained. It is heated in a microwave oven for 5 minutes, the temperature can reach 90 DEG C, and the normal total radiation emissivity can reach 88% or more in the range of 2-18 μm. The far-infrared ceramic ball is used ...
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