Name

Type

Phase

Character & Uses

GW-1

active micropowder

α.Al₂O₃ transform rate ＞93%

1.D₅₀ ＜1.2 μm;  2. Higher activity; 3. Using GW-1 & GW-2 to make refractory castables which could obtain low water-addition and better flowability; 4. Wihout additives.

GW-2

micropowder

α.Al₂O₃

1. 4.0 μm ＜D₅₀ ＜4.5 μm； 2. Without additives; 3. Using GW-2 and GW-1 to make refractory castables.

GW-S₁

double peaks micropowder

α.Al₂O₄

1. D₅₀ approximate 1.0 μm; 2. Containing dispersant 3. Fornmulating corundum or corundun-spinel castables without silicons ashes; 4. Formulating high alumina self-flowing castables with 5-5.5% water-addition and more than 200mm self material and proportion are suitable. 5. Formulating corundum or high bauxite with silicon ashes low water vibration castables the water-addition could reduce to about 4.0%.

GLW-1

high alumina micropowder

α.Al₂O₅

1.Al₂O₃ ＞85%; 2.Blaine ＞ 600 m²/kg; 3. Using with silicon micropowder to formulate low cement castables with high performance and low price.

Typical techonologic data

GW-1 Active Grade

GW-2 Micropowder

GW-S₁ double peaks

GLW-1 high alumina

Chemical composition

Al₂O₃ (%)

98.70

98.76

98.66

≥86.0

SiO₂  (%)

0.12

0.12

0.12

＜5.5

Fe₂O₃  (%)

0.12

0.12

0.12

＜2.0

Na₂O(%)

0.30

0.28

0.30

3.43

Specific Gravity (g/cm³)

3.95

3.96

3.95

Particle Size

D50

0.96

4.30

0.95

D60

3.00

18.00

3.98

Blaine (m²/kg)

≥600