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. 2021 Apr 20;14(8):2080. doi: 10.3390/ma14082080

Table 1.

Chemical compositions of the phosphate ore and silica (mass fraction, wt %).

Composition P2O5 SiO2 CaO MgO Fe2O3 Al2O3 K2O Na2O MnO
phosphate ore 22.57 29.04 33.72 1.79 1.39 3.63 0.92 0.29 0.10
silica 1.60 87.30 2.22 0.36 0.93 3.35 0.60 0.21 0.01