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Item

33#

36#

41#

Bulk density (g/cm3)

≥3.70

≥3.80

≥3.95

Apparent Porosity %

≤1.5

≤1.0

≤0.9

Exudation temperature of glass phase °C

≥1400

≥1400

≥1400

Corrosion resistance of glass liquid (1500°C×36h)

mm/24h

≤1.6

≤1.3

≤1.2

Bubble Separation Ratio(1300°C×10h) %

≤1.2

≤1.0

≤1.0

Cold Crush Strength Mpa

≥200

≥200

≥200

Volume density(g/cm3)

≥3.75

≥3.85

≥4.00

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Chemical Composition

(％)

ZrO2

32-36

35-40

40-44

SiO2

≤16

≤13

≤12.5

Na2O

≤1.45

≤1.50

≤1.25

AL2O3

Leavings

Leavings

Leavings

Fe2O3+TiO2+CaO+Na2O+K2O

≤ 2.5

≤ 2.5

≤ 2.5