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Zhao Jizeng, President of China Refractory Materials Association-The Road to Powerful Refractory Materials

Zhao Jizeng, President of China Refractory Materials Association-The Road to Powerful Refractory Materials

On September 23, 2020, President Zhao Jizeng of the China Refractory Association shared with you the theme report on the road to a strong refractory material country at the fourth executive council meeting of the eighth session of the China Refractory Association, in which President Zhao proposed six elements to become a strong refractory material country, with unique and eye-catching views.

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2022

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Composition and Application of Refractory Castable

Composition and Application of Refractory Castable

Refractory refers to the temperature of the cone sample of refractory castable in the absence of a load, against the high temperature effect without softening and melting. Refractory castable and high temperature skills appear, roughly originated in the middle of the Bronze Age. During the Eastern Han Dynasty, clayey refractory castables were used as kiln materials and saggers for firing porcelain. At the beginning of the 20th century, refractory castables were developed to high purity, high density and ultra-high temperature products. At the same time, monolithic refractory castables and refractory fibers with no need for firing and low energy consumption appeared. Contemporary, with the development of orchard energy skills, space skills, and new resource skills, refractory castables with comprehensive and high-quality functions such as high temperature resistance, erosion resistance, thermal vibration resistance, and erosion resistance have been applied.

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2022

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01

The National Standard Committee approved the release of 4 national standards for refractory materials

The National Standard Committee approved the release of 4 national standards for refractory materials

Announcement No. 6 of 2018 of the National Standardization Management Committee approved 389 national standards, including 4 national standards for refractory materials. The specific standard names are as follows: 1)GB/T7320-2018 "Test Method for Thermal Expansion of Refractory Materials": This standard specifies the definition, principle, equipment, specimens, test steps, result calculation, test error and test report of thermal expansion determination of refractory materials. This standard is applicable to the determination of linear expansion rate, average linear expansion coefficient and instantaneous linear expansion coefficient of refractory materials.

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2021

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Refractory castable such construction is in line with national standards!

Refractory castable such construction is in line with national standards!

In the construction of refractory castables, many construction teams do not have professional construction qualifications, and project delays or material waste caused by unqualified construction quality occur from time to time. In fact, in the national standards, the construction of refractory castable, maintenance, mold removal and construction of refractory castable prefabricated parts, have made a very clear specification requirements.

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2021

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Mullite castable base formula

Mullite castable base formula

The basic formula of mullite castable is 68.0% of 7~0mm pyrocarbides, 23.0% of alumina micropowder, 3.7% of silica micropowder, 5% of calcium aluminate cement, 02% of compound water reducing agent and 0.1% of anti-cracking fiber. The basic formula is recorded as 0# formula. On the basis of 0# formula, 2.5%, 5.0%, 7.5% and 10% of silicon carbide are introduced respectively, and the dosage of alumina micropowder is reduced accordingly, respectively recorded as 1#~ 4# formula.

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2021

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