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白剛玉耐火砂是以優(yōu)質(zhì)鋁氧化粉為原料,經(jīng)電熔提煉結(jié)晶而成, 純度高、自銳性好、耐酸堿腐蝕、耐高溫、熱態(tài)性能穩(wěn)定它硬度略高于棕剛玉,韌性稍低,純度高、自銳性好、磨削能力強(qiáng)、發(fā)熱量小、效率高、耐酸堿腐蝕、耐高溫?zé)岱€(wěn)定性好。用其制成磨具,適用于磨削高碳鋼、高速鋼及不銹鋼等細(xì)粒度磨料還可以用于精密鑄造和高級耐火材料。
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.、
白剛玉耐火砂物理特性Main Physical Properties
莫氏硬度MOHS HARDNESS |
9.0 |
堆積密度BULK DENSITY |
1.75-1.95g/cm3 |
比重SPECIFIC GRAVITY |
3.95g/cm3 |
體積密度 |
3.60 |
白剛玉耐火砂化學(xué)指標(biāo):
屬性 Properties 規(guī)格Type
|
0-1 1-3 3-5m/m |
0-100 0-200 0-320 |
|||
保證值 Guarantee Value |
典型值 Typical Value |
保證值 Guarantee Value |
典型值 TypicalValue |
||
化學(xué)成分 Chemical Composition |
Al2O3 |
≥99 |
99.5 |
≥98.5 |
99.0 |
SiO2 |
≤0.1 |
0.06 |
≤0.20 |
0.08 |
|
Fe2O3 |
≤0.1 |
0.04 |
≤0.20 |
0.10 |
|
Na2O |
≤0.4 |
0.30 |
≤0.40 |
0.35 |
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