化学成份 |
含量要求 |
Al2O3 |
(标称值+4)% |
Al2O3+ SiO2 |
≥90% |
Fe2O3 |
<1% |
主晶相 |
长石质 |
长石-莫来石质 |
莫来石质 |
莫来石质-刚玉质 |
刚玉质 |
|
Al2O3含量 |
20-30 |
30-45 |
45-70 |
70-90 |
≥90 |
|
吸水率% |
≤5 |
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耐酸度% |
≥98 |
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耐碱度% |
≥80 |
≥82 |
≥85 |
≥90 |
≥95 |
|
耐热温度℃ |
≥1300 |
≥1400 |
≥1500 |
≥1600 |
≥1700 |
|
抗压强度 N/颗 |
Φ3 |
≥120 |
≥140 |
≥150 |
≥160 |
≥200 |
Φ6 |
≥400 |
≥420 |
≥440 |
≥480 |
≥500 |
|
Φ8 |
≥480 |
≥520 |
≥600 |
≥620 |
≥650 |
|
Φ10 |
≥600 |
≥700 |
≥800 |
≥900 |
≥1000 |
|
Φ13 |
≥1000 |
≥1100 |
≥1300 |
≥1500 |
≥1800 |
|
Φ16 |
≥1500 |
≥1600 |
≥1800 |
≥2300 |
≥2600 |
|
Φ20 |
≥1800 |
≥2000 |
≥2300 |
≥2800 |
≥3200 |
|
Φ25 |
≥2500 |
≥2800 |
≥3200 |
≥3600 |
≥4000 |
|
Φ30 |
≥3000 |
≥3200 |
≥3500 |
≥4000 |
≥4500 |
|
Φ38 |
≥4000 |
≥4500 |
≥5000 |
≥5500 |
≥6000 |
|
Φ50 |
≥6000 |
≥6500 |
≥7000 |
≥8500 |
≥10000 |
|
Φ75 |
≥10000 |
≥11000 |
≥12000 |
≥14000 |
≥15000 |
|
堆积比重kg/m3 |
1100-1200 |
1200-1300 |
1300-1400 |
1400-1500 |
>1550 |