陶瓷去毛刺，表面处理等用板状刚玉/片状刚玉/烧结氧化铝
板状刚玉是进口氧化铝经配料、粉磨和成型后，在略低于其熔点的超高温条件下烧结完全的再结晶α- Al2O3，其晶体呈平板状交错排列，增加了颗粒的机械强度;晶内和晶间以分布均匀的闭气孔为主，体积密度高，显气孔和吸水率低，减少了再制品的用液量;独特的脱钠工艺使产品中的碱性氧化物含量显着减少，具有高耐火度、良好的热震稳定性、低热收缩率和良好的热负荷强度等优越的物理性能。同时，高纯度避免了杂质对系统的污染，是制作高级耐火材料、陶瓷材料和绝缘材料的理想原料。
板状刚玉化学成分(典型值)
|
AL2O3 |
SiO2 |
CaO |
Fe2O3 |
Na2O |
|
≥99.2 |
≤0.05 |
≤0.04 |
≤0.05 |
≤0.40 |
板状刚玉物理特性
|
体积密度g/cm3 |
显气孔率（％） |
吸水率（％） |
|
≥3.5 |
≤5.0 |
≤1.5 |
厂里常规生产粒度粒度分布：
|
粒度 |
保证值 |
|
|
5-10mm or 1/2-1/4inch
|
+12.5mm |
0-2% |
|
+10.0mm |
1-25% |
|
|
+6.3mm |
47-83% |
|
|
-4.0mm |
0-2% |
|
|
3-6mm/3-6# |
+6.3mm |
0-4% |
|
+5.0mm |
8-40% |
|
|
+4.0mm |
29-52% |
|
|
-2.0mm |
0-3% |
|
|
1-3mm/6-14# |
+4.0mm |
0-2% |
|
+3.35mm |
0-8% |
|
|
+2.0mm |
32-76% |
|
|
-1.0mm |
0-10% |
|
|
1-2mm/8-14# |
+3.35mm |
0-1% |
|
+2.0mm |
2-26% |
|
|
+1.4mm |
40-70% |
|
|
-1.0mm |
0-10% |
|
|
0.5-1mm/14-28# |
+1.4mm |
0-2% |
|
+1.0mm |
2-38% |
|
|
+0.72mm |
35-65% |
|
|
-0.5mm |
0-10% |
|
|
0.2-0.6mm/28-48# |
+0.71mm |
0-2% |
|
+0.5mm |
1-30% |
|
|
+0.25mm |
58-98% |
|
|
-0.212mm |
0-7% |
|
|
0-3mm/-6# |
+3.35mm |
0-8% |
|
-0.125mm |
1-21% |
|
|
0-1mm/-14# |
+1.4mm |
0-2% |
|
+1.0mm |
1-30% |
|
|
+0.5mm |
16-57% |
|
|
-0.106mm |
5-26% |
|
|
0-0.5mm/-28# |
+0.71mm |
0-2% |
|
+0.5mm |
1-30% |
|
|
+0.25mm |
16-57% |
|
|
-0.045mm |
5-26% |
|
|
0-0.3mm/-48# |
+0.3mm |
0-3% |
|
+0.25mm |
0-12% |
|
|
+0.125mm |
10-45% |
|
|
-0.045 |
15-45% |
|
|
0-0.075mm/-200# |
+0.088mm |
0-1% |
|
-0.075mm |
96-100% |
|
|
0-0.045mm/-325# |
+0.063mm |
0-2% |
|
-0.045mm |
95-100% |
|
