Calculation of quantitative phase composition from bulk analysis

2 Calculation of quantitative phase composition from bulk analysis 

For a calculation of the quantitative phase composition of a clinker from the bulk chemical analysis to give correct results, the following conditions are necessary and sufficient  

Free lime, 0.6% insoluble residue, 0.3% main analysis by XRF. 4.4.3 Estimation of sulphate phases 

The procedure given below provides an estimate of the amounts of KjO, NajO, CaO and SO3 present in sulphate phases. It is based on the results of Pollitt and Brown (P2) (Section 3.5.6), and more specifically on the curves in 

If the contents of water-soluble K2O and Na20 are known, it is necessary only to calculate AT, and TV, from them, and R, and then to carry out stages 2 and 4. From AT, TV, and C the quantities of individual sulphate phases may be estimated as described in Section 3.5.6. In the example given, the calculation indicates that the sulphate phases account for all the SO3, 0.07% of Na20, 0.28% of KjO and 0.04% of CaO. These probably occur as aphthitalite (0.6%) and calcium langbeinite (0.1%). 

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