河南鄭州生產(chǎn)廠家耐火骨料0-1-3-5-8mm白剛玉耐火砂 一、白剛玉耐火砂 白剛玉0-1-3-5-8mm 白剛玉3-5mm 白剛玉5-8mm 白剛玉1-3mm 白剛玉耐火砂是以鋁氧化粉為原料，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、發(fā)熱量小、效率高、耐酸堿腐蝕、耐高溫熱穩(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粒度磨料還可以用于鑄造和耐火材料。 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  白剛玉耐火砂化學指標： 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