Experience in application of X-ray fluorescent radiometric analysis with radio isotope excitation to continuous determination of tin during tin ores flotation

A device for continuous determination of small amounts of tin in flotation unit flow has been developed and tested at a commercial plant. X-ray fluorescence analysis with isotopic excitation is employed. The device is based mainly on standard blocks produced by industry (scintillation probe, pulse counter and oth.). Differential filter technique has been used, which allows to eliminate matrix effects. Measurements can be carried out directly on the main pulp flow both for the inlet material and for the tails at the solid phase content about 800 g/l. The measurement range is 0-0.5% of tin. The relative precision is 15-20%