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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Bibliographic Details
Main Authors WANG YUXIA, XU ENXIA, LI SUPING, DONG MENGLEI, DENG JUNJIE, LIU PING, LI YUAN
Format Patent
LanguageChinese
English
Published 12.12.2017
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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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
Bibliography:Application Number: CN201710737488