METHOD OF DETERMINING COEFFICIENT OF HETEROGENEITY OF MIXTURE OF LOOSE MATERIALS Russian patent published in 2017 - IPC G01N1/20 G01N21/85 B01F3/18 B01F3/22 

FIELD: technological processes; chemistry.

SUBSTANCE: invention relates to laboratory investigations of processes of mixing various loose materials in chemical industry, in industrial production of construction materials and other industries. Method comprises determining coefficient of heterogeneity of a polydisperse mixture of loose materials in a drum type mixer. Mixture of loose material is divided in mixer by cross sections into equal-thickness sampling sections. Removable plates are installed on border of each section. Samples of equal volumes of mixture are collected from identical points of each selected section throughout its thickness using samplers. Samplers consist of capsules with moving pistons and are inserted into holes in a detachable sampling disc. Coefficient of heterogeneity is calculated for each sampling point, on average at each section and on average on mixer as a whole, using formula: , where – arithmetic mean concentration of key component in samples, %; c_i is concentration of key component in i-th sample, %; n is number of analysed samples.

EFFECT: high accuracy of determining coefficient of heterogeneity of mixture.

1 cl, 6 dwg