The stability of inorganic ultraviolet pigments synthesized from phosphogypsum in relation to the action of a number of solvents has been studied. It is noted that under the conditions studied, the samples are stable in the presence of water and solutions of organic solvents, and treatment of the samples with concentrated solutions of sulfuric acid and sodium hydroxide leads to a decrease in luminescent properties. The luminescence ability of the samples remains when heated to 800 ° C. Based on the developed pigments, building mixes can be obtained that have luminescent properties when irradiated with ultraviolet light.

Keywords: building mixes, putty, luminescent pigments, phosphogypsum processing, thermal stability, solvent treatment, action of acid and alkali solutions

The analytical decision on definition of a forming wall of the bunker of the greatest capacity is provided in article among all bunkers having identical entrance and exhaust outlets. Such bunkers are intended for a hydraulic type of the expiration of bulk. They reduce a pulsation loose at its exit from the outlet and reduce extent of influence of the dynamic arches by account characteristics of the bunker.

Keywords: sliding lines, entrance openings, outlets, bunker, loose body, expense of the loose.