powder

Peculiarities of Phase Formation in Sol-Gel Powders of the СaО–ZrO2–Nb2O5–SiO2 System

The phase composition of xerogel powders of the CaO–ZrO2–Nb2O5–SiO2 system after heat treatment at 1273 K with different Nb2O5 content was established. The temperatures of the physical and chemical processes occurring during the powders heating were determined. It was found that the complete replacement of ZrO2 by Nb2O5 resulted in the formation of niobium-containing phases with a change in the structure of the powders.

Development of the design of multipurpose equipment for crushing plastics and obtaining powders

A substantially new in design an experimental sample of complex equipment intended for crushing of various fragile and elastic materials, in particular plastics and obtaining powders of a different dispersion was built. The equipment consists of a shock-rotary crusher, a six-polar electromagnetic separator, two types of classifiers that allows to obtain the powders with a dispersity up to 0,05 mm applying raw materials of 5÷15 mm of diameter.

Вогнегасна концентрація порошку в привибійному просторі тупикового вироблення

A method for the determination and the results of theoretical studies of concentration and time of filing extinguishing powder based on air flow coming from the vent pipe in bottom hole space deadlock output.