1 Introduction
2 Background
3 Experimental Procedure
3.1 Step 1
3.2 Step 2
CaO (%)
|
MgO (%)
|
Al
2
O
3
(%)
|
SiO
2
(%)
|
B2
|
B4
|
Viscosity
(Poise)
|
Remarks
| |
Slag I | 39.5 | 11.8 | 10 | 38.7 | 1.02 | 1.05 | 1.362 | Low Basicity |
Slag II | 43.2 | 10.4 | 8.3 | 38.1 | 1.13 | 1.15 | 1.214 | Medium Basicity |
Slag III | 52.6 | 4.5 | 4.7 | 38.2 | 1.38 | 1.08 | 1.036 | High Basicity |
Slag IV | 35 | 10.7 | 27 | 27.3 | 1.28 | 0.84 | 1.544 | High Alumina |
3.3 Step 3
3.4 Step 4
-
15o C/min until 1200oC
-
10o C/ min thereafter
-
Holding at 1600oC for 30 min
-
Program Stops
-
Cooling in furnace to room temperature
4 Results and Discussion
C1
|
C2
|
C3
| |
Ash
| 10.70 | 10.10 | 9.35 |
Volatile Matter
| 0.19 | 0.37 | 0.65 |
Moisture
| 3.4 | 3.15 | 2.04 |
Fixed Carbon
| 85.71 | 86.38 | 87.96 |
C1
|
C2
|
C3
| |
CRI (Coke Reactivity Index)
| 26.65 | 28.2 | 30.2 |
CSR (Coke Strength after Reaction)
| 58.3 | 61.0 | 64.05 |
4.1 Coke/Slag Experiments
-
Complete infiltration of the slag droplet in coke before reaching 1600oC (I)
-
The droplet remains until 1600oC and disappears during the holding time (H)
-
The droplet does not disappear and remains on the surface after holding and cooling from 1600oC (HF)
-
Strong pulsation of droplet during heating/holding (P)
C1
|
C2
|
C2
| |
Slag I
| HF, P | HF, P | HF, P |
4.2 Coke/Hot Metal Experiments
C
|
Mn
|
Si
|
S
|
P
|
Cu
|
4.60 | 1.16 | 0.585 | 0.05 | 0.07 | 0.005 |