惰性氧化铝陶瓷球的化学特性 根据AL2O3含量的不同,可分为以下几种:
指标 |
普通瓷球 |
中铝瓷球 |
高铝瓷球 |
|
Al2O3 |
17-23% |
60-75% |
80-95% |
|
Al2O3 +SiO2(%) |
≥92% |
≥92% |
≥95% |
|
Fe2O3(%) |
<1% |
<1% |
<0.5% |
|
CaO (%) |
<1.5% |
<2.1% |
<2.9% |
|
MgO(%) |
<2.5% |
<1.3% |
<0.5% |
|
K2O+Na2O(%) |
<4.0% |
<4.0% |
<4.0% |
|
TiO2 (%) |
<0.5% |
<0.1% |
<0.1% |
|
吸水率(%) |
<3% |
<3% |
<3% |
|
抗酸度(%) |
>98% |
>98% |
>98% |
|
耐碱度(%) |
>80% |
>85% |
>90% |
|
操作温度(°C) |
>980 |
>1180 |
>1580 |
|
真比重(g/cm3) |
2.3-2.4 |
2.6 |
3.5 |
|
莫氏硬度(级) |
6.5 |
7.0 |
7.0 |
|
抗压强度(KN/颗) |
∮6 |
>0.4 |
>0.5 |
>0.6 |
∮13 |
>1.2 |
>1.6 |
>1.7 |
|
∮20 |
>1.8 |
>2.0 |
>2.3 |
|
∮25 |
>2.5 |
>2.9 |
>3.2 |
|
∮38 |
>4.0 |
>4.5 |
>5.0 |
|
∮50 |
>8.0 |
>8.5 |
>11 |
|
直接(Φ)(mm) |
3,6,8,10 |
13,16,20,25 |
30,38,50,65,75 |
|
直接允差(mm) |
±1.0 |
±1.5 |
±3.0 |