METALLOGRAPHIC METHOD OF DETECTING MAGNESIUM OR ITS ALLOYS IN SALT MIXTURES OF WASTES FROM MAGNESIUM PRODUCTION Russian patent published in 2009 - IPC G01N1/32 G01N33/20 C25C3/04 

FIELD: physics; measurements.

SUBSTANCE: present invention pertains to metallurgical study of nonferrous metals, and can be used in express metallographic analysis of magnesium in salt mixtures. Salt mixtures of wastes from magnesium production are premixed in molten state and cooled. The metallographic sample is prepared by polishing its surface. The analysed structure is photographed in scattered light and the image is saved into a computer. Using the computer, the images are processed by counting the number of particles of components of the metallographic sample in a two-phase structure, for which a rectangular region with the largest area of metal particles on the sample is selected on the obtained image. Dark salt and light metallic sections are selected on the structure of the metallographic sample using the computer, and from the light sections, the number of magnesium particles on the area of the metallographic sample is determined.

EFFECT: increased accuracy of quantitative measurement of magnesium or its alloys in a solid salt mixture, and from the analysis results, possibility of further processing can be determined, with the objective of extracting the essential component.

3 cl, 3 dwg, 1 ex