In India as per the Guidelines issued by MoEF on SOx emissions, the allowance limits for SOx emissions for cement Plants with co-processing of wastes would be 100, 700 and 1000 mg/Nm3, for the pyritic sulphur in the limestone of < 0.25%, 0.25 to 0.5% and more than 0.5% respectively. Thus determination of pyretic sulphur content in Limestone and in-process materials has become a necessity, proper assessment of pyretic sulphur content of the Limestone deposits has become an important aspect for all Cement plants.
The method developed is an . XRF method for determination of Pyritic sulphur (Sulphide sulphur in Limestone and other process samples ). It determines S2– (Sulphide)and total sulphur (including sulphates) in limestone and other process materials using speciation in XRF. .. It is a Method derived from combination of satellite and ratio methods reported in Literature .
Since XRF is available in all the CMU’s, this method would help CMU’s to use the method to keep close monitor and control of pyretic sulphur of in-process materials and could be related effectively to the SOx emissions.
The paper was published & presented at the 15th NCB International seminar on Cement ,Concrete & Building materials