Periclase-silicon oxynitride composite refractory for microwave metallurgy kiln car
The invention discloses a periclase-silicon oxynitride composite refractory with the characteristics of low electromagnetic absorption rate, excellent wave permeability, high-temperature volume stability, good thermal shock resistance and excellent corrosion resistance for a microwave metallurgy kil...
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Main Authors | , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
12.12.2017
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a periclase-silicon oxynitride composite refractory with the characteristics of low electromagnetic absorption rate, excellent wave permeability, high-temperature volume stability, good thermal shock resistance and excellent corrosion resistance for a microwave metallurgy kiln car, and a preparation method of the periclase-silicon oxynitride composite refractory. The adding amount of starting materials in parts by weight are as follows: 65 to 70 parts of magnesia aggregate, 15 to 23 parts of magnesia fine powder, 2 to 6 parts of SiO2 micro powder and 10 to 15 parts of Si powder; the adding amount of a binding agent is 3 to 6 percent of the total weight of the starting materials. The periclase-silicon oxynitride composite refractory disclosed by the invention has the following properties that the volume density is 2.8 to 2.95g/cm , the cold compressive strength is 80 to 120MPa, the cold bending strength is 15 to 25MPa, and hot modulus of rupture is about 5 to 10MPa at the temperature of |
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Bibliography: | Application Number: CN201710737488 |