Acid-resistant and wear-resistant plastic materials are NMSS series of acid-resistant and wear-resistant castables developed by the Institute of Engineering Thermophysics of the Chinese Academy of Sciences based on the technical requirements and working conditions of CFB circulating fluidized bed waste incinerators. They are developed to meet the requirements of waste incinerators. They have strong plasticity at room temperature, strong adhesion, small natural drying shrinkage, high strength after drying, excellent wear resistance, crack resistance, erosion resistance and thermal shock stability, and are easy to construct. They are unanimously recognized by the Circulating Fluidized Bed Combustion Technology Engineering Research Center of the Institute of Engineering Thermophysics of the Chinese Academy of Sciences as the ideal acid-resistant and wear-resistant material for waste incinerators.
Acid-resistant and wear-resistant plastics are made of aluminum silicate materials as synthetic refractory aggregates and powders, and are acid-resistant and alkali-resistant plastics prepared with aluminate cement and admixtures. Acid-resistant and wear-resistant plastics are acid-resistant and alkali-resistant and can resist erosion. Our company has independently developed a series of acid-resistant, alkali-resistant, wear-resistant and high-temperature kiln operating conditions in response to the operating conditions and technical requirements of circulating fluidized bed waste incinerators in power plants; the operating conditions and technical requirements of boiler flue systems and dust collector equipment systems in power plants. The main features of this series of products: high temperature resistance, acid and alkali corrosion resistance, wear and erosion resistance, room temperature curing, medium and low temperature bonding strength, and high thermal shock stability and crack resistance.
Its physical and chemical indicators are as follows:
|
Brand Projects and indicators |
NSJM-1 |
NSJM-2 |
|
|
chemical composition(%) |
AL2O3 |
≥80 |
≥70 |
|
Bulk density (g/cm3) |
110℃×24ｈ |
≥2.80 |
≥2.60 |
|
1000℃×3ｈ |
≥2.75 |
≥2.55 |
|
|
Flexural strength at room temperature (MPa) |
110℃×24ｈ |
≥9.0 |
≥8 |
|
1000℃×3ｈ |
＞15 |
＞12 |
|
|
Normal temperature compressive strength (MPa) |
110℃×24ｈ |
≥65 |
≥60 |
|
1000℃×3ｈ |
≥120 |
≥100 |
|
|
Line change rate after burning (%) |
1000℃×3ｈ |
±0.02 |
±0.30 |
|
Wear resistance cm3 [According to SATM (C-704 standard] |
≤6.0 |
≤7.0 |
|
|
Thermal Conductivity ｗ/ｍ·ｋ |
1.5 |
1.5 |
|
|
Thermal vibration stability (times) (1000℃×water cooling) |
≥25 |
≥25 |
|
|
Refractoriness (℃) |
≥1790 |
≥1770 |
|
|
Maximum operating temperature (℃) |
≥1550 |
≥1550 |
|
|
Acid corrosion resistance ㎜(2%H2SO4) |
＜1 |
＜1 |
|
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