Abstract: An improved method of assaying powdered samples of minerals, ores, concentrates, raw mix cement, phosphates and other processed minerals in either an On-line or in-process X-ray fluorescence laboratory analytical system, using a Window-less cell system. The cell system is constructed with four walls, a closed and open side. The open side is the uppermost side facing an inlet chute as it travels into the chute to permit the filling and discharge of samples.

Abstract: This invention relates to the application of on-line or inprocess elemental analysis by X-ray fluorescence spectroscopy and in particular to improvements in the field of continuously analyzing flowing dry powder samples from processes such as raw mix cement, iron ore, slag, mineral concentrates, concentrator feeds, phosphate, food products and similar materials.

Abstract: An X-ray spectrometer is provided with two channels for detecting characteristic lines of the X-ray source after being scattered by a sample undergoing analysis, in addition to means for detecting electric signals primarily representative of the concentrations of analytes in the sample. In this way, data is collected which facilitates corrections of the measurements corresponding to individual analytes for deviations from linearity of intensity caused by variations in interelement effects, and by variations in total-solids concentration, or density, of the slurry, or matrix, in which the analytes are distributed, and by variations in particle size of the total-solids in the sample. Correction of measurements of total-solids concentration and average particle size of the matrix for each other and for effects of analytes, may also be made.