Table 7 Element content of raw materials of CCPU
Item | Cullet | Clay | Cement | S- 3 | ||||
|---|---|---|---|---|---|---|---|---|
Average (g kg−1) | RSD (%) | Average (g kg−1) | RSD (%) | Average (g kg−1) | RSD (%) | Average (g kg−1) | RSD (%) | |
Al | 54.1 | 3.7 | 92.6 | 22.8 | 7.5 | 23.1 | 7.6 | 5.8 |
Ca | 29.0 | 4.7 | 1.7 | 8.0 | 282 | 16.6 | 18.8 | 2.5 |
Cd | N.D | N.A | 0.01 | 16.3 | N.D | N.A | N.D | N.A |
Co | 0.01 | 37.1 | 0.02 | 12.9 | 0.01 | 13.9 | 0.3 | 5.8 |
Cr | 0.02 | 43.9 | 0.3 | 21.4 | 0.08 | 12.4 | 2.5 | 6.0 |
Cu | 0.07 | 12.6 | 3.9 | 8.6 | 0.01 | 24.7 | 8.6 | 2.1 |
Fe | 0.6 | 29.3 | 17.8 | 10.7 | 19.1 | 5.9 | 18.8 | 6.9 |
K | 0.08 | 8.6 | 0.01 | 74.2 | 1.8 | 8.4 | 2.0 | 4.4 |
Mn | N.D | N.A | 0.6 | 17.1 | 0.4 | 3.0 | 4.8 | 4.2 |
Mg | 6.3 | 7.2 | 0.5 | 56.2 | 29.8 | 15.5 | 0.8 | 4.4 |
Na | 2.2 | 4.0 | 1.2 | 13.3 | 3.5 | 3.7 | 12.4 | 15.2 |
Ni | N.D | N.A | 0.4 | 15.1 | 0.03 | 2.8 | 2.0 | 2.4 |
Pb | N.D | N.A | 0.3 | 7.7 | 0.06 | 11.7 | N.D | N.A |
Si | 376 | 36.4 | 185 | 25.8 | 254 | 32.1 | 84.7 | 6.5 |
Zn | 0.1 | 29.3 | 3.5 | 2.3 | 0.06 | 15.6 | 0.05 | 2.5 |
Cl− | 0.8 | 19.6 | 0.3 | 31.5 | 0.02 | 38.5 | 0.5 | 8.3 |