About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Taimarov Mikhail Alexandrovich doctor of technical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State Power Engineering University The organization address: 420066, Russia, Kazan, Krasnoselskaya st., 51 Lavirko Yuri Vasilyevich candidate of technical sciences, associate professor Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1 |
| Title of the article | Development of new types of aluminosilicate refractors with improved radiative ability |
| Abstract. | Problem statement. In the production of building ceramic materials by firing method, fireclay refractories are used for lining the internal space of furnaces. The heat exchange in the furnaces of the kilns takes place due to the emission of lining on the material being calcined. Bricking is heated by the input heat from the flare of burning fuel natural gas. The warming up of the lining is used due to electric heating elements. But such heating costs much more. To increase the efficiency of the fuel gas used, it is necessary that the integral emissivity of the lining material be as high as possible. Results. The emissivity of fireclay is not high and depends on the formulation of the refractory. In addition, fireclay has a relatively low temperature range of application. High emissivity refractory materials – chromo-magnesite refractories are very expensive. This article presents the results of the development of new refractory formulations, which are compiled on a technological basis using the properties of the phases of mullite and cristobalite. It has been revealed that at certain ratios of the phases of mullite, cristobalite and the addition of a carbon-containing substance to the formulation of aluminosilicate acidic and semi-acid refractories, enhanced emissivity and temperature resistance are provided. Conclusions. The significance of the results for the construction industry is that at certain ratios of the phases of mullite and cristobalite, and the addition of a carbonaceous substance to the formulation of aluminosilicate acidic and semi-acid refractories, provides increased emissivity and temperature resistance. Shungite of Zazhoginsk Deposit of the Republic of Karelia was used as an additional carbon-containing substance to obtain a refractory with a guaranteed value of high emissivity. To increase the emissivity mullitecorundum basic refractory most effective use of chromite mined pit method in Burakovsk-Aganozersk (Republic of Karelia), Imandro-Varguzsky (Murmansk region), Ray-Izsc, Syumkeusk and Voykar-Synyinsky (Yamalo-Nenetsk Autonomous area) fields. |
| Keywords. | refractory, aluminosilicate, fireclay, cristobalite, mullite, corundum, carbon, phase, temperature resistance, emissivity, silicon carbide, chromite. |
| For citations: | Taimarov M.A., Lavirko Y.V. Development of new types of aluminosilicate refractors with improved radiative ability // Izvestiya KGASU. 2019. №2(48) P.247-254. |
