Measuring LOI in Ores and Cement Samples

Loss on Ignition (LOI) is a key parameter in the analysis of ores and cement. By heating a sample to high temperatures and measuring the mass lost, laboratories can quantify volatile components such as moisture, carbonates, organics, and other compounds that influence both raw material quality and final product performance. In cement production, LOI provides critical information for kiln control and clinker consistency, while in mining, it helps evaluate ore composition, processing efficiency, and overall material value. Accurate LOI results are therefore essential for process optimization, quality control, and compliance with industry standards.

Two Advanced Solutions from Navas Instruments

At Navas Instruments, we provide two innovative ways to determine LOI in ores and cement, each designed to simplify workflows, improve reproducibility, and increase laboratory productivity:

  1. Multi-Sample Bead Fusion with Simultaneous LOI/LOF
    Our patented bead fusion machine combines glass bead preparation for XRF with built-in thermogravimetric capability. This unique two-in-one design automatically measures LOI and Loss on Fusion (LOF) for every sample while performing bead fusion. There is no need for separate equipment or duplicate sample handling, reducing variability and saving time. The final glass beads are immediately ready for XRF analysis with precise LOI/LOF values already recorded.
  2. Multi-Sample, Multi-Stage Thermogravimetric Analyzer (TGA)
    For laboratories that require flexibility across a wide range of applications, our TGA provides automated multi-sample analysis with programmable temperature stages. In addition to LOI, the instrument measures moisture, volatile matter, and ash—all in a single automated workflow. Integrated weighing and automated data recording improve accuracy and traceability, while high-throughput sample handling ensures maximum productivity.

Why Choose Navas Instruments

Both solutions go beyond traditional single-sample muffle furnace methods, eliminating manual handling and minimizing sources of error. By integrating LOI determination directly into automated systems, laboratories benefit from faster turnaround, higher confidence in results, and seamless data export to Excel or LIMS.

See how Navas Instruments’ LOI solutions—whether through fusion with integrated LOI/LOF or multi-stage TGA analysis—can transform sample preparation, streamline workflows, and deliver consistent, high-quality results for ores and cement