硅灰石原礦化學指標： CaSiO4: 65~95% SiO2: 40~52% CaO: 38~48% Fe2O3:0.2~0.4% Al2O3: 0.1~0.5%
CaSiO4: 65~95% SiO2: 40~52% CaO: 38~48% Fe2O3:0.2~0.4%
Al2O3: 0.1~0.5%
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