The online multi-element analyzer for slurry is an instrument designed for real-time multi-element detection and analysis, available in both single-channel and multi-channel configurations. Utilizing X-ray fluorescence (XRF) analysis technology and following the Moseley Law, it employs energy dispersive methods to analyze the characteristic X-rays emitted from various elements in the material based on their differing energies and intensities. This allows for the identification and quantification of elemental composition in the measured material, with results displayed in real time. The analyzer can conduct real-time online analysis of elements with atomic numbers above 20 in industrial material flows and is suitable for automatic control applications, primarily in metallurgy, mineral processing, and chemical industries.