project

indicators

NMJ-1

NMJ-2

NMJ-3

Al2O3,%

≥60

≥65

≥70

bulk density,g/㎝3

110℃×24hAfter drying

≥2.40

≥2.60

≥2.80

Normal temperature
compressive strength,Mpa

110℃×24hAfter drying

≥55

≥60

≥65

1000℃×3hAfter drying

≥80

≥90

≥100

Flexural strength at
room temperature,Mpa

110℃×24hAfter drying

≥7

≥8

≥9

1000℃×3hAfter burning

≥9

≥11

≥13

Linear rate
of change,%

1000℃×3h

±0.3

±0.3

±0.3

Normal temperature
 wear,㎝3

1000℃×3hAfter burning

≤9

≤8

≤7

Thermal shock
resistance, times

1000℃,water-cooling

≥20

≥20

≥20

Higher service temperature, ℃

1400

1450

1500