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Information × Registration Number 0218U002629, 0117U005065 , R & D reports Title Mastering of production technology of new types of silicon carbide refractories and pilot batches out put. popup.stage_title Head Savina L., Registration Date 11-05-2018 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. The purpose of the work is production technology mastering of new types of the silicon carbide products. The research methods are physicomechanical, thermomechanical, petrographic and electron microscopic ones. In PJSC "The URIR NAMED AFTER A.S. BEREZHNOY" the production technology of new types of the pressed silicon carbide products on alumina containing and silica nitride containing binders grade of "KКG" and "KКNK": silicon carbide plates on alumina containing binder grade of "KКG" with sizes of 500х360х20 mm, which corresponded to technical specification (TS); silicon carbide guides for non-muffle units on silica nitride containing binder grade of "KКNK" with sizes of 740х210х75 mm, 682х152х63 mm and 524х152х63 mm, which corresponded to TS, has been mastered. The influence of carbon containing "Carbonxide" addition, produced by "Refrasud International S.R.L." (Italy), on the properties of the pressed silicon carbide products on silica nitride containing binder has been researched. It was founded that, the introduction of the carbon containing "Carbonxide" addition, instead ferrosilicon and petroleum coke additions, promotes formation of multiphase composition binder (Si3N4, -sialon, -SiC, AlN). It allows increasing of product strength at using of the carbon containing "Carbonxide" addition in comparison with ferrosilicon and petroleum coke additions by 6.6 %. The developed silicon carbide products with "Carbonxide" addition with sizes of 230х115х50 mm are characterized by following physicochemical properties: content SiC - 71.0 %, Si residual - 0.43 %, N - 7.15 %, compressing strength - 210.0 N/mm2, open porosity - 16.8 %, apparent density - 2.58 g/cm3, refractoriness under load of 0.2 N/mm2 > 1700 °С. In accordance with the existing normative documentation in PJSC "THE URIR NAMED AFTER A.S. BEREZHNOY" the pilot batches of silicon carbide products on alumina containing binder grade of "KКG" (new type) and silicon carbide products on silica nitride containing binder grade of "KКNK" (including three new type) have been produced. These products are corresponded to TS. Besides, the pilot batch of low cement silicon carbide castable grade of "NKBC" has been produced. This castable is corresponded to TS. The work shall be continued in the line of production technology mastering of the silicon carbide refractories on silica nitride containing binder with "Carbonxide" addition, as well as production and application values expanding of silicon carbide products on alumina containing and silica nitride containing binders, low cement silicon carbide castable, production technology mastering of new types of silicon carbide refractories on alumina containing and silica nitride containing binders. Product Description popup.authors Костирко І.Ю. Нікуліна Л.М. Тінігін А.С. Щербак Л.М. popup.nrat_date 2020-04-02 Close