The best grade for road surfaces is refractory grade.The CALCINED BAUXITES with high specific gravities, i.e. over 3.0 tend to have higher PSV values. The density of CALCINED BAUXITE varies from 2.6 to 3.4 according to source, and is an excellent indication of the the PSV of the CALCINED BAUXITE, high density indicates a high PSV.
|
Item name |
SKB-80 |
SKB-83 |
SKB-84 |
SKB-85 |
SKB-86 |
|
Al2O3 % min |
80 |
83 |
84 |
85 |
86 |
|
SiO2 % max |
13-14 |
11 |
10 |
9.0 |
8.0 |
|
Fe2O3 % max |
2.5 |
2.2 |
2.0 |
2.0 |
2.0 |
|
TiO2 % max |
4.2 |
4.2 |
4.0 |
4.0 |
3.8 |
|
K2O+Na2O % |
0.8 |
0.7 |
0.6 |
0.5 |
0.4 |
|
CaO+MgO % |
0.6 |
0.5 |
0.5 |
0.5 |
0.5 |
|
B.D gm/cc min |
2.70 |
2.75 |
2.80 |
2.85 |
3.00 |
|
Moisture % max |
0.5 |
0.5 |
0.5 |
0.5 |
0.5 |
|
Package |
Jumbo |
Jumbo |
Jumbo |
Jumbo |
Jumbo |