|
|
2007 |
| Fly Ash Production |
Fly Ash Utilization |
5,337,429
|
1,776,060 |
| |
|
| Bottom Ash Production |
Bottom Ash Utilization |
| 1,184,755 |
872,365 |
| |
|
| Boiler Slag Production |
Boiler Slag Utilization |
| 183,078 |
136,593 |
| |
|
| FGD Material Production |
FGD Material Utilization |
| 4,958,256 |
238,185 |
|
Fly Ash |
| Typical chemical analysis (%) |
Class ‘F’ |
Class ‘C’ |
| Silica (SiO2) |
58.0 |
35.9 |
| Aluminum Oxide (Al2O3) |
29.1 |
18.9 |
| Iron Oxide (Fe2O3) |
3.6 |
6.1 |
| Combined 1,2, &3 |
90.7 |
60.9 |
| Titanium Oxide (TiO2) |
1.6 |
1.4 |
| Calcium Oxide (CaO) |
0.8 |
24.6 |
| Magnesium Oxide (MgO) |
0.8 |
5.4 |
| Sodium Oxide (Na2O) |
0.1 |
1.9 |
| Potassium Oxide (K2O) |
2.5 |
0.3 |
| Sulfur Trioxide (SO3) |
0.2 |
2.3 |
| Phosphorus Pentoxide (P2O5) |
0.1 |
1.1 |
| Barium Oxide (BaO) |
0.1 |
0.7 |
| Manganese Oxide (Mn2O3) |
0.1 |
<0.1 |
| Strontium Oxide (SrO) |
0.1 |
0.4 |
| Total Carbon (C) |
1.7 |
<0.1 |
| Other |
1.2 |
1.0 |
| Total |
100.0 |
100.0 |
| pH @ 25oC, s.u. (1% Slurry) |
5.0 |
11.0 |
| Available Alkali |
0.60 |
1.25 |
| Typical physical analysis |
Class ‘F’ |
Class ‘C’ |
| Moisture Content (%) |
0.25 |
0.07 |
| Loss on Ignition (%) |
2.34 |
0.24 |
| Fineness (% Retained) |
18.87 |
16.57 |
| Specific Gravity |
2.16 |
2.70 |
| Soundness (%) |
-0.053 |
0.007 |
| Pozzolanic Activity Index |
|
|
| Water Requirement (% Control) |
98 |
94 |
| Cement @ 7 Days (% Control) |
79 |
96 |
| Typical chemical analysis (%) |
Bottom ash |
Boiler slag |
| Silica (SiO2) |
58.5 |
50.6 |
| Aluminum Oxide (Al2O3) |
26.4 |
22.0 |
| Iron Oxide (Fe2O3) |
5.0 |
20.0 |
| Titanium Oxide (TiO2) |
1.5 |
1.0 |
| Calcium Oxide (CaO) |
0.7 |
3.8 |
| Magnesium Oxide (MgO) |
0.7 |
0.7 |
| Sodium Oxide (Na2O) |
0.3 |
0.5 |
| Potassium Oxide (K2O) |
2.1 |
1.6 |
| Sulfur Trioxide (SO3) |
0.1 |
0.1 |
| Phosphorus Pentoxide (P2O5) |
0.1 |
0.2 |
| Barium Oxide (BaO) |
0.1 |
<0.1 |
| Manganese Oxide (Mn2O3) |
0.1 |
<0.1 |
| Strontium Oxide (SrO) |
0.1 |
<0.1 |
| Total Carbon (C) |
3.3 |
0.2 |
| Other |
1.0 |
-0.7 |
| Total |
100.0 |
100.0 |
| pH @ 25oC, s.u. (1%
Slurry) |
6.0 |
6.0 |
| Staining Index |
20 |
20 |
| Typical physical analysis |
Bottom ash |
Boiler slag |
| Specific Gravity |
2.31 |
2.63 |
| Absorption (%) |
0.72 |
0.15 |
| Permeability (cm/sec) |
1.9
E-02 |
7.3
E-01 |
| Permeability Density
(lbs/ft3) |
58.2 |
85.5 |
| Dry Rodded Weight (lbs/ft3) |
65.0 |
84.1 |
| Relative Density |
|
|
| Maximum (lbs/ft3) |
89.0 |
95.0 |
| Minimum (lbs/ft3) |
73.0 |
74.0 |
| Gradation |
|
|
| 3/4" Sieve |
100 |
100 |
| 3/8" Sieve |
95.8 |
96.6 |
| #4 Sieve |
90.5 |
84.6 |
| #8 Sieve |
83.5 |
60.0 |
| #16 Sieve |
73.4 |
17.8 |
| #30 Sieve |
62.9 |
4.0 |
| #50 Sieve |
52.1 |
1.5 |
| #100 Sieve |
30.9 |
0.7 |
| #200 Sieve |
11.4 |
0.3 |
| Typical chemical analysis (%) |
FGD scrubber material |
| Silica (SiO2) |
21.1 |
| Aluminum Oxide (Al2O3) |
12.6 |
| Iron Oxide (Fe2O3) |
7.7 |
| Titanium Oxide (TiO2) |
0.7 |
| Calcium Oxide (CaO) |
25.7 |
| Magnesium Oxide (MgO) |
1.8 |
| Sodium Oxide (Na2O) |
0.3 |
| Potassium Oxide (K2O) |
0.9 |
| Sulfur Trioxide (SO3) |
30.3 |
| Phosphorus Pentoxide (P2O5) |
0.1 |
| Barium Oxide (BaO) |
<0.1 |
| Manganese Oxide (Mn2O3) |
<0.1 |
| Strontium Oxide (SrO) |
<0.1 |
| Total Carbon (C) |
0.4 |
| Other |
-1.6 |
| Total |
100.0 |
| pH @ 25oC, s.u. (1% Slurry) |
10.8 |
|
