Influence of the dispersion of quartzites on the properties of dinas refractories masses

The article presents the results of a study of the effects of the fractional composition of quartzite on the physical and mechanical properties of a fired shard of dinas refractory masses. As a result of the study of their chemical-mineralogical, fractional compositions and physicochemical characteristics, it was found that for the development of the composition of refractory dinas masses, it is necessary to use fractions of fine grinding of quartzite.

Structural-phase changes of dinas in calcining furnaces of coke production

The article presents the results of research in the field of changes determining of the phase composition and structure of dinas refractories in operating conditions during coal coking. The reasons for the observed changes are differences in temperatures and rates of cooling / heating of dinas at cyclic loading / unloading the coked material, as well as the conditions of refractory contact with the operating environment, the degree and nature of mechanical loads in different masonry zones of coke ovens. As a result of the studies, regularities and features of the macro- and microstructure organization in combination with the forming phase composition of dinas refractory in various zones of the coke oven masonry are noted. It has been determined that critical changes for the integrity of the dinas products material relative to microstructure and phase composition have been not revealed given fact confirms the further operational suitability of such products under the testing conditions of experimental production. Ill. 1. Ref. 10. Tab. 1.