text: The cement industry uses the LOI method by heating a cement sample to 900-1000 °C until the mass of the sample stabilizes. Once the mass stabilizes, the mass loss due to LOI is determined. This is usually done to assess the high water content in the cement or carbonation, as these factors diminish the quality of cement. High losses are generally attributed to poor cement storage conditions or manipulation of cement quality by suppliers. This practice ensures that the cement used on a site adheres to the correct composition, meeting safety protocols and customer requirements.
  In the mining industry, the utilization of LOI is essential for determining the moisture and volatile material present in the rock. Thus, when performing whole-rock analysis to ascertain total volatiles, the LOI method is employed. To eliminate all volatiles and convert all iron into iron oxides, the LOI temperature is set at  900-1000 °C.