Influence of magnesia in the infiltration of magnesia-spinel refractory bricks by different clinkers

Rem: Revista Escola de Minas

Geraldo Eduardo Gonçalves¹  Graziella Rajão Cota Pacheco¹  Modestino Alves De Moura Brito¹  Sérgio Luiz Cabral Da Silva¹  Vanessa De Freitas Cunha Lins¹ 

关键词: Magnesia-spinel refractory brick;    infiltration;    clinker;   

DOI  :  10.1590/0370-44672014680117

来源: SciELO

【 摘 要 】

Abstract In cement production, which involves the production of cement clinker in rotary kilns, the main refractories used are magnesia-spinel bricks. These bricks may suffer infiltration by the clinker liquid phase, resulting in the corrosion of the spinel and the formation of low refractoriness mineralogical phases, such as the Q phase (C20A13M3S3), which compromises refractory performance. Thus, the aim of this work is to correlate the infiltration resistance of magnesia-spinel bricks made from different grades of magnesia by clinker collected in three different cement plants (A, B and C). The purity of magnesia, besides its physical properties, strongly influences the properties and the infiltration resistance of magnesia-spinel bricks; as such the use of high grade magnesia is essential for producing high performance refractories.

【 授权许可】

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