Hardness(mohs): | ≥9.0 | Crystal Form: | Trigonal System |
---|---|---|---|
Melting Point: | 2250℃ | Maximum Service Tempera- Ture: | 1900℃ |
True Density: | ≥3.90 G/cm³ | Chemical Composition: | AL₂O₃ |
Resistivity: | 30c/300c/900c/1600c(cm) | ||
High Light: | Sand Blasting Brown Fused Alumina,Brown Fused Alumina Metal,Construction brown aluminum oxide |
international standard first-order brown fused alumina metal steel construction sand-blasting
Product name: grained sand of brown fused alumina
Specification: 24#
Brown fused alumina is made by bauxite and coke (anthracite) at high temperature in electric arc furnace. If the abrasive tools are made of brown fused alumina, they are applicative in abrasive metals with high tensile stress, such as various general steel, malleable cast iron, hard bronze, etc., and can also be used to manufacture advanced refractory materials. Brown fused alumina has the characteristics of high purity, good crystallization, strong fluidity, low linear expansion coefficient, and corrosion resistance. After practical verification by dozens of refractory production enterprises, this product has the characteristics of no detonation, no pulverization, and no cracking etc. during the application process. Especially its comprehensive performance is much higher than traditional brown fused alumina, and it becomes the best filling agent and filler in the refractory material of brown fused alumina.
AVERAGE CHEMICAL COMPOSITION(TYPICAL)
Al2O3 | Fe2O3 | Tio₂ | SiO2 |
≥95% | ≤0.3% | ≤0.3% | ≤1.5% |
PHYSICAL PROPERTIES(TYPICAL)
Mohs hardness |
Proportion |
Melting point |
Max. Working temperature |
Crystalline form |
≥9.0 | ≥3.90g/cm3 | 2250℃ | 1900℃ |
tripartite crystal system |
Composition standard of grit size GB/T 2479-2008
Particle size |
max coarse particles |
Coarse particles |
Basic particles
|
Mixed particles |
Meal grain |
|||
100% passed the following sieve number | no pass the sieve number | no more than weight % | No pass the sieve number |
no less than weight %
|
no pass the sieve number |
no less than weight %
|
passed the following sieve number most weight 3%
|
|
10# | 6 | 8 | 20 | 10 | 45 | 10 12 | 70 | 14 |
12# | 7 | 10 | 20 | 12 | 45 | 12 14 | 70 | 16 |
14# | 8 | 12 | 20 | 14 | 45 | 14 16 | 70 | 18 |
16# | 10 | 14 | 20 | 16 | 45 | 16 18 | 70 | 20 |
20# | 12 | 16 | 20 | 18 | 45 | 18 20 | 70 | 25 |
22# | 14 | 18 | 20 | 20 | 45 | 20 25 | 65 | 30 |
24# | 16 | 20 | 25 | 25 | 45 | 25 30 | 65 | 35 |
30# | 18 | 25 | 25 | 30 | 45 | 30 35 | 65 | 40 |
36# | 20 | 30 | 25 | 35 | 45 | 35 40 | 65 | 45 |
40# | 25 | 35 | 30 | 40 | 40 | 40 45 | 65 | 50 |
46# | 30 | 40 | 30 | 45 | 40 | 45 50 | 65 | 60 |
54# | 35 | 45 | 30 | 50 | 40 | 50 60 | 65 | 70 |
60# | 40 | 50 | 30 | 60 | 40 | 60 70 | 65 | 80 |
70# | 45 | 60 | 25 | 70 | 40 | 70 80 | 65 | 100 |
80# | 50 | 70 | 25 | 80 | 40 | 80 100 | 65 | 120 |
90# | 60 | 80 | 20 | 100 | 40 | 100 120 | 65 | 140 |
100# | 70 | 100 | 20 | 120 | 40 | 120 140 | 65 | 200 |
120# | 80 | 120 | 20 | 140 | 40 | 140 170 | 65 | 230 |
150# | 100 | 140 | 15 | 170 200 | 40 | 170 200 230 | 65 | 325 |
180# | 120 | 170 | 15 | 200 230 | 40 | 200 230 270 | 65 | |
220# | 140 | 200 | 15 | 230 270 | 40 | 230 270 325 | 60 |
Particle size comparison sheet of brown fused alumina
grained sand of brown fused alumina | |||
Particle size number |
(μm) Particle size range (μm) |
Particle size number |
(μm) Particle size range (μm) |
16# | 1190 | 80# | 170 |
24# | 710 | 100# | 150 |
30# | 590 | 120# | 124 |
36# | 480 | 150# | 95 |
46# | 350 | 180# | 84 |
60# | 250 |