F20, 24, 36, 60 Mesh Brown Fused Alumina for Refractory Material
Yongruida brown fused alumina (BFA) is made from bauxite coke being smelting by electric-arc furnace at a very high temperature. Its good thermal propertiy makes it an excellent raw material
for refractory industry.
Production Process
Bauxite coke --- sorting --- electrolyzation --- extract --- deironing & magnetic separation --- screening --- chemical analysis --- packing --- storage
Physical and Chemical Index
Application | Specification | Chemical Composition %
| Magnetic substance% | ||||
Al2O3 | Fe2O3 | SiO2 | TiO2 | ||||
Abrasive material abrasive tools | F | 4#—80# | ≥95 | ≤0.3 | ≤1.5 | ≤3.0 | ≤0.05 |
90#—150# | ≥94 | ≤0.03 | |||||
180#—240# | ≥93 | ≤0.3 | ≤1.5 | ≤3.5 | ≤0.02 | ||
P | 8#—80# | ≥95.0 | ≤0.2 | ≤1.2 | ≤3.0 | ≤0.05 | |
100#—150# | ≥94.0 | ≤0.03 | |||||
180#—220# | ≥93.0 | ≤0.3 | ≤1.5 | ≤3.5 | ≤0.02 | ||
W | 1#-63# | ≥92.5 | ≤0.5 | ≤1.8 | ≤4.0 | — | |
Refractory material | Sand size | 0-1mm1-3mm3-5mm5-8mm8-12mm | ≥95 | ≤0.3 | ≤1.5 | ≤3.0 | — |
25-0mm10-0mm50-0mm30-0mm | ≥95 | ≤0.3 | ≤1.5 | ≤3.0 | — | ||
Powder size | 180#-0200#-0320#-0 | ≥94.5≥93.5 | ≤0.5 | ≤1.5 | ≤3.5 | — | |
Note: F is for bonded abrasive tools and abrasive blasting;
P is for coating abrasive tools
W is micro powder ,320# =W40
Mechanical Property
Item | Index |
color | Dark brown |
crystal | Trigonal system |
Hardness(Mohs) | ≥9.0 |
Melting Point(℃) | 2250 |
Max. Service temp.(℃) | 1900 |
Density(g/cm3) | ≥3. 90 |
TEC (0—1600℃) | 7—9 |
Performance Feature
- Strong hardness, well crystallized;
- Good flowline performance;
- No crack, No chalking during usage;
- abrasive tool made of it has no map cracking or rust.
Wide Application
Ceramics, abrasive tools; abrasive blasting; polishing; precision casting.
Packing Picture