METHOD OF ESTIMATING QUALITY OF QUARTZ RAW MATERIAL Russian patent published in 2014 - IPC G01N24/10 

FIELD: chemistry.

SUBSTANCE: application: for identification of the purest types of the quartz raw material. Essence of the invention consists in the following: selection of a monomineral sample of quartz, crushing and quartzification of three samples are carried out. Each sample is subjected to irradiation by γ-quanta with a dose of 10±1×10⁶ Gr. In the first sample after irradiation the content of isomorphic structural Al-O centres in quartz is determined. The third sample before irradiation is subjected to temperature processing at 590-650°C for 20-30 min and the complete content of structural Al-O centres in quartz is determined. The third sample before irradiation is activated by SHF fields with power 700-800 W for 3-5 min, and subjected to temperature processing at 590-650°C for 20-30 min and the content of mobile structures of Al-O centres in quartz is determined. After that, an index of quartz washability, C₁ - content of isomorphic structural Al-O centres in quartz, C₂ -complete content of structural Al-O centres in quartz, C₃ - content of mobile structural Al-O centres in quartz are determined, and if a value of washability index is 0.5-1, conclusion about high quality of the quartz raw material is made.

EFFECT: increased accuracy and rapidity, as well as simplification of the process of estimation of the quartz raw material quality.

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