METHODS FOR DETERMINING MINERALOGY OF CALCINED DIATOMITE AND DIATOMITE SUBJECTED TO CALCINATION WITH FLUX Russian patent published in 2019 - IPC B01J6/00 G01N23/20 C04B14/08 B01J20/14 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measurement equipment and can be used to determine content of opal-C and cristobalite product, which contains diatomite. Method may include performing heat treatment to determine losses for calcination for a representative first portion of a sample of product, identification and quantitative determination of primary and secondary peaks present in the first diffraction pattern, which is obtained as a result of diffraction of X-ray radiation in the volume of the powder on the representative second part of the sample, and using a known standard cristobalite sample to determine whether primary and secondary peaks present in the first diffraction pattern show the presence of opal-C or cristobalite in the product.

EFFECT: high accuracy and reliability of obtained survey data.

17 cl, 33 dwg, 20 tbl