白刚玉以工业氧化铝粉为原料,于电弧中经2000度以上高温熔炼制成,经粉碎整形,磁选去铁,筛分成多种粒度,其质地致密、硬度高,粒形成球状,白刚玉适用于制造陶 瓷、树脂固结磨具以及研磨、抛光、喷砂、精密铸造等,还可用于制造高级耐火材料,代号“WA”于国际通用标准、国家标准一致,多数供出口,也有一定量供应国内用户。
White fused alumina was made from the high quality alumina by melting above 2000 in the electric arc furnace and cooling. It is white with the main crystal phase alpha-Al2O3.The white alumina produced in titling electric arc furnace has the advantage of high bulk density and low porosity and the volume stability and thermal shock resistance can be improved.
0-1mm白刚玉 |
0-1mm白刚玉 |
2.白刚玉的化学及物理特性
白刚玉理化指标 |
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化学成分 |
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粒度 |
Al2O3 |
Fe2O3 |
SiO2 |
Cao |
MgO |
K2O |
Na2O |
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3-5mm |
≥99.2% |
≤0.1% |
≤0.1% |
≤0.1% |
≤0.1% |
≤0.1% |
≤0.35% |
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物理成分 |
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堆积密度(Bulk density) |
体积密度(Specific Gravity) |
莫氏硬度(Mohs Hardness) |
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1.75-1.95g/cm3 |
≥3.90g/cm3 min |
≥9 |
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用途(Usage) |
应用于钢铁、铸造、石油化工、透气砖、钢包衬、浇注料、预制件、陶瓷等领域,是一种优异的耐火原料。耐火度高,硬度大,热震稳定性好,抗侵蚀性和耐磨性能好,性能稳定。 主要用途: 耐火材料,炉料,浇注料,捣杂料,可塑料,喷补料,压住料,投射料,涂抹料,喷涂料,火泥,干式振动料,自流浇注料,涂料,耐火泥浆等。如:不定型耐火材料,定型耐火材料,刚玉砖,钢包用耐火材料,中性耐火材料,高炉热风炉用系列组合砖,高铝砖,含碳耐材,莫来石砖,炮泥,散装料,陶瓷杯,粘土砖,组合砖,刚玉制品等。 |