Search academic texts

Information × Registration Number 0219U004236, 0118U004569 , R & D reports Title Mastering of production technology of silicon carbide refractories on silica nitride containing binder with carbon containing addition of "Carbonxide" and pilot batches out put of silicon carbide refractories popup.stage_title Head Savina L., Registration Date 17-04-2019 Organization Public joint stock company "The Ukrainian research institute of refractories named after A.S.Berezhnoy" popup.description2 The research object is silicon carbide refractories on silica nitride containing binder with carbon containing addition of "Carbonxide". The purpose of the work is a mastering of production technology of silicon carbide refractories on silica nitride containing binder with carbon containing addition of "Carbonxide". The research methods are physical-chemical, petrographic, thermo-mechanical ones. The production technology of silicon carbide refractories on silica nitride containing binder with carbon containing addition of "Carbonxide" has been mastered. Products with the addition of "Carbonxide" are characterized by the following indexes of physical and chemical properties: content, wt. %: SiC - 71.2, Si residual - 0.5, N - 7.1; cold crushing strength 162.0 N/mm2, open porosity 18.0, apparent density 2.57 g/cm3, refractoriness under loud of 0.2 N mm2 -> 1700 °C. The quantity influence of zirconia-containing addition on the properties of corundum refractory on sialon-containing binder is investigated. It has been established that, when electrofused corundum is replaced by alumina-zirconia-silicate material, the samples strength increases, however, when the content of this material exceeds 20 wt. %, thermal shock resistance and slag resistance of the samples reduce. Taking into account the obtained results, namely: increase of strength, absence of slag penetration, as well as high thermal shock resistance, a composition with the optimum quantity of alumina-zirconia-silicate material can be recommended for use in aggregates with cyclic mode of operation. In accordance with the requirements of current normative documentation on the pilot production JSC "The URIR named after A.S. Berezhnoy" the pilot batches of silicon carbide refractories on alumina-containing binder and silicon carbide refractories on silica nitride containing binder, which corresponded to requirements of the technical specifications, have been produced. The work shall be continued in the line of expanding the volumes of production and use of low cement silicon carbide castable, silicon carbide refractories on alumina-containing, silica nitride containing and sialon-containing binders, as well as a mastering the production technology of new type sizes products Product Description popup.authors Бабкіна Л.О. Костирко І.Ю. Нікуліна Л.М. Тінігін А.С. Щербак Л.М. popup.nrat_date 2020-04-02 Close